CN1265262C - Method for reducing consumed power by computer system during multimedia data play - Google Patents
Method for reducing consumed power by computer system during multimedia data play Download PDFInfo
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- CN1265262C CN1265262C CN 03147487 CN03147487A CN1265262C CN 1265262 C CN1265262 C CN 1265262C CN 03147487 CN03147487 CN 03147487 CN 03147487 A CN03147487 A CN 03147487A CN 1265262 C CN1265262 C CN 1265262C
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Abstract
The present invention provides a method for playing multimedia data in a computer system. The computer system comprises a central processing unit used for controlling the operation of the computer system, a memory used for reading the multimedia data, a bridge circuit electrically connected between the central processing unit and the memory so as to harmonize the data transmission between the central processing unit and the memory, and an output device. The method comprises: an image-sound playing controller to the computer system is provided and electrically connected between the memory and the output device, and thus, the memory is controlled to transmit the multimedia data to the image-sound playing controller without starting the bridge circuit to process the multimedia data. Besides, the image-sound playing controller is used for processing the multimedia data and driving the output device to play the multimedia data.
Description
Technical field
The present invention relates to a kind of multimedia data play method in computer system, particularly relate to a kind of method of the power that is consumed when reducing the computer system play multimedia data.
Background technology
In information society now, the computer system (computer system) that is widely used in various industries is just being played the part of important role in many companies, and along with the increase of storage volume, the lifting of arithmetic speed, the reduction of production cost, and user's interface (user interface) more easily, computer system, for example (personal computer PC), also can be used as an information processing centre to a personal computer.Nowadays, the entertainment effect that multimedia technology can provide the user more to stimulate, for instance, one motion picture film can be recorded in a multifunctional digital disc (digital versatile disc, DVD) or a videodisc sheet (video compact disc, VCD) on, so if on the personal computer CD-ROM drive (optical disc drive) is installed, then this personal computer just can drive this CD-ROM drive and captures file data that should motion picture film, then, this personal computer just can be play this motion picture film according to this file data.See also Fig. 1, Fig. 1 is the function block schematic diagram of known computer systems 10.Computer system 10 includes a central processing unit (central processing unit, CPU) 12, one north bridge circuit (north bridgecircuit) 14, one south bridge circuit (south bridge circuit) 16, one storer (memory), 18, one CD-ROM drives, 20, one display systems (display system) 22, one input media 24, and a screen (monitor) 26.In addition, display system 22 includes a display control circuit (display controller) 28 and one video signal transmission circuit (video transmitter) 30.Central processing unit 12 is used for the running of control computer system 10, north bridge circuit 14 is electrically connected on central processing unit 12, be used for controlling the signal transmission between central processing unit 12 and the high-speed peripheral device (for example storer 18 and display control circuit 28), and south bridge circuit 16 is electrically connected on north bridge circuit 14, is used for controlling the signal transmission between north bridge circuit 14 and the low speed peripheral unit (for example CD-ROM drive 20 and input media 24).Storer 18, for example (dynamic random access memory, DRAM), it is used for storage data to a dynamic RAM.20 of CD-ROM drives are used for reading the data of being noted down on the discs (optical disc).In addition, input media 24 is used for receiving the steering order that a user is assigned, and for example input media 24 is a keyboard (keyboard), is used for the input character signal to computer system 10, perhaps input media 24 is a mouse (mouse), is used for importing the pointer signal to computer system 10.Display system 22 is used for driving screen 26 show image pictures, wherein display control circuit 24 can be carried out 2D graphic operation and 3D graphic operation, and export corresponding image signal to video signal transmission circuit 30, and video signal transmission circuit 30 convertible these image signals are for being fit to drive the corresponding driving signal of screen 26, for instance, if screen 26 is a liquid crystal display (liquid crystal display, LCD) screen, therefore video signal transmission circuit 30 is converted to this image signal and meets digital image interface (digital visual interface, DVI) driving signal is so that this image signal can successfully drive this LCD Panel show image picture.
Also can start (power on) CD-ROM drive 20 behind computer system 10 starting up simultaneously, computer system 10 is just carried out a boot program then, and for example ego function test (power-on-self-test, POST).As an operating system (operating system, OS) after smooth the loading, the user just can use CD-ROM drive 20 to capture data stored on the discs, for example the user utilizes input media 24 to come order central processing unit 12 to carry out play-back application (Playback application), then this play-back application just may command CD-ROM drive 20 capture the image data of being noted down in the discs (for example a digital multi disc or a videodisc sheet).Then, CD-ROM drive 20 just can give the performed play-back application of central processing unit 12 with this image data transmission via south bridge circuit 16 and north bridge circuit 14, and this play-back application just orders 28 pairs of these image datas of display control circuit to carry out the associated translation computing producing corresponding image signal, and export this image signal to video signal transmission circuit 30 so that drive screen 26 by video signal transmission circuit 30.At last, the user just can watch motion picture film that should the image data that discs write down by screen 26.
As mentioned above, in order to play image data stored on the discs, computer system 10 at first must be carried out boot program starting inner all circuit units, yet the assembly in the computer system 10 can consume many electric power.(laptop computer) is example with mobile computer, and required electric power is mainly provided by cell apparatus during running, and for the computer system of Pentium4, whole power consumption can be greater than 100 watts.Yet, be not in the computer system 10 each circuit unit all with play discs on the operation of recorded data relevant, for example a hard disk (hard-disk drive) need not use this moment, but this hard disk still can consume electric power to rotate its disk sheet (magnetic disk), significantly, computer system 10 can produce more heat transfer because consume more electric power, so heat radiation just becomes a crucial problem.In addition, under the state of so power consumption, the power-on time of cell apparatus also shortens thereupon, so the user also can't use mobile computer (computer system 10) to play multifunctional digital disc (DVD) easily or videodisc sheet (VCD) is gone up stored image data.
Summary of the invention
Therefore fundamental purpose of the present invention is to provide a kind of method of the power that is consumed when reducing the computer system play multimedia data, to address the above problem.
In order to realize above-mentioned purpose of the present invention, the present invention discloses the method that a kind of computer system (computersystem) is play a multi-medium data.This computer system includes a central processing unit (centralprocessing unit, CPU) be used for controlling the running of this computer system, one storage device (storagedevice) is used for reading this multi-medium data, one bridgt circuit (bridge circuit), be electrically connected between this central processing unit and this storage device, be used for coordinating the data transmission between this central processing unit and this storage device, and an output unit.This method includes provides an audio-visual playing controller to give this computer system, this audio-visual playing controller is electrically connected between this storage device and this output unit, control this storage device and transmit this multi-medium data to this audio-visual playing controller, do not handle this multi-medium data and do not start this bridgt circuit, and use this audio-visual playing controller to handle this multi-medium data and play this multi-medium data with this output unit of driving.
Because computer system of the present invention includes an audio-visual playing controller, it can not carry out boot program and keep running normally under the off-mode in this computer system, so computer system of the present invention is in the process of playing this multi-medium data, only have the part assembly can consume electric power, therefore the power consumption that is produced just can reduce significantly.
Description of drawings
Fig. 1 is the function block schematic diagram of known computer systems.
Fig. 2 is the functional block diagram of computer system of the present invention.
The drawing reference numeral explanation
10,40 computer systems, 12,42 central processing units
14,44 north bridge circuits, 16,46 south bridge circuits
18,48 storeies, 20 CD-ROM drives
22 display system input medias 24
26,56 screens, 28,50 display control circuits
30,62 video signal transmission circuits, 51 sound effect processing circuits
52 CD-ROM drives, 54 audio-visual playing controller
57 loudspeaker, 58 image decoding devices
60 scale units, 64 audio code translators
Embodiment
See also Fig. 2, Fig. 2 is the functional block diagram of computer system 40 of the present invention.Computer system 40 includes a central processing unit (central processing unit, CPU) 42, one north bridge circuit (north bridgecircuit) 44, one south bridge circuit (south bridge circuit) 46, one storer 48, one display control circuit (display controller) 50, one sound effect processing circuit (audio processor) 51, one CD-ROM drive (optical disk drive) 52, one audio-visual playing controller (playback controller) 54, one screen (monitor) 56, and loudspeaker (speaker) 57.Audio-visual playing controller 57 comprises an image decoding device (video decoder) 58, one scale unit (scaling circuit or scaler) 60, one video signal transmission circuit (video transmitter) 62, and an audio code translator (auio decoder) 64.
Central processing unit 42 is used for the running of control computer system 40, north bridge circuit 44 is used for controlling the signal transmission between central processing unit 42 and the high-speed peripheral device (for example storer 48 and display control circuit 50), and south bridge circuit 46 then is the signal transmission that is used for controlling between north bridge circuit 44 and the low speed peripheral unit (for example CD-ROM drive 52).Storer 48 is used for storage data, for instance, storer 48 can be volatile memory (volatile memory), dynamic RAM (dynamicrandom access memory for example, DRAM), perhaps storer 48 can also be nonvolatile memory (non-volatile memory), for example flash memory (flash memory).Display control circuit 50 is used for carrying out 2D graphic operation and 3D graphic operation, and produces image signal to drive the corresponding image frame of screen 56 outputs.In addition, it is corresponding simulated sound signal to drive loudspeaker 57 that sound effect processing circuit 51 is used for the converting digital voice data, for instance, sound effect processing circuit 51 is the known audio process chip (audio chip) on the motherboard (motherboard) that is arranged at a sound card (soundcard) or computer system 40.In addition, CD-ROM drive 52 is used for capturing a discs (optical disk) and goes up recorded data, and for instance, if this discs is a multifunctional digital disc, then CD-ROM drive 52 is DVD drive; Similarly, if this discs is a videodisc sheet or a music CD sheet (audio compact disk, auio CD), then CD-ROM drive 52 is CD drive.As shown in Figure 2,54 of audio-visual playing controller are to be electrically connected on CD-ROM drive 52 and display control circuit 50.
The operation of computer system 40 is described below.Assembly in the computer system 40 belongs to two power zone block 66a, 66b respectively, as shown in Figure 2, power zone block 66a includes central processing unit 42, north bridge circuit 44, south bridge circuit 46, storer 48, and display control circuit 50, on the other hand, power zone block 66b then includes CD-ROM drive 52, audio-visual playing controller 54, screen 56, and loudspeaker 57.Suppose that computer system 40 is a mobile computer (laptop computer), and be in off-mode.Be stored in a multifunctional digital disc (DVD) or the last stored motion picture film of a videodisc sheet (VCD) if a user desires to watch, then in the present embodiment, only have power zone block 66b to be activated, power zone block 66a then can not start.For instance, if this user push button on the housing of CD-ROM drive 52 (for example one " OPEN " button or " PLAY " button), then power zone block 66b can be selected and start, that is a cell apparatus just can begin to provide the device that is under the jurisdiction of power zone block 66b required operating voltage.At this moment, CD-ROM drive 52 just can read any discs that is loaded on CD-ROM drive 52, and therefore the image data that is recorded on this discs just can transfer to audio-visual playing controller 54.Known as industry, image data can carry out encoding process via a pre-defined algorithm (for example MPEG-2), so when audio-visual playing controller 54 receiving records behind the image data on this discs, image decoding device 58 can be deciphered processing to this image data, and the image data after the output decoding is to scale unit 60.Scale unit 60 is used for adjusting image data after this decoding so that meet the display resolution (displayresolution) that screen 56 is supported, for example this image data is corresponding 640 * 480 display resolution, that is need 640*480 pixel to export to each image frame in should the motion picture film of image data, if yet screen 56 sets the display resolution of use is 1280 * 1024, that is screen 56 uses 1280*1024 pixel to come show image, then scale unit 60 just need be adjusted originally the image data of corresponding 640 * 480 display resolution, so that image data can successfully be shown on the screen 56 of corresponding 1280 * 1024 display resolution; On the other hand, if the display resolution of this image data system corresponding 1280 * 1024, that is need 1280*1024 pixel to export to each image frame in should the motion picture film of image data, if yet the display resolution that this moment, screen 56 set use is 640 * 480, that is screen 56 uses 640*480 pixel to come show image, then scale unit 60 just need be adjusted originally the image data of corresponding 1280 * 1024 display resolution, so that image data can successfully be presented on the screen 56 of corresponding 640 * 480 display resolution.
And then, the image data after the conversion just transfers to video signal transmission circuit 62, and in the present embodiment, video signal transmission circuit 62 convertible these image datas are the driving signal that is applicable to screen 56.Note that screen 56 is built in the LCD Panel of mobile computer in can being, or an external display device (for example a televisor or a cathode ray tube screen), or an external LCD Panel.For instance, if screen 56 is a LCD Panel, then video signal transmission circuit 62 just can be converted to image signal and meet digital image interface (digital visual interface, DVI) the driving signal of specification; Similarly, if screen 56 is a televisor, then video signal transmission circuit 62 just can be converted to image signal S terminal (S-video) signal, RGB signal or YP
bP
rSignal is used for driving the televisor or the high-resolution TV (HDTV) of general requirements.For the data that are stored on digital multi disc or the videodisc sheet, these data not only contain image data, and it also is attended by voice data.So, after data are by CD-ROM drive 52 outputs, also can transfer to audio code translator 64 to decipher the sound signal of having encoded in these data, the sound signal after the decoding just can export loudspeaker 57 to drive loudspeaker 57 then.
Please note, power zone block 66a is not activated, therefore there is not operating voltage can supply with central processing unit 42, north bridge circuit 44, south bridge circuit 46, storer 48 or display control circuit 50, so, computer system 40 can't be via known ego function test (power-on-self-test, POST) and the starting up, that is south bridge circuit 46 and can't handle the data that CD-ROM drive 52 is exported, and computer system 40 just can reduce its whole power consumption significantly owing to only start power zone block 66b.
Suppose mobile computer (computer system 40) to finish boot program and when starting, the operation of then audio-visual playing controller 54 is described below.At this moment, one of embodiment of the invention is handled the data that CD-ROM drive 52 is exported for using south bridge circuit 46, note that after computer system 40 starts, two power zone block 66a, 66b all can start, so any assembly that is arranged among power zone block 66a, the 66b all can normally operate.When the user inserts the multifunctional digital disc of the image data that stores a corresponding motion picture film or videodisc sheet to CD-ROM drive 52, computer system 40 can order CD-ROM drive 52 these image datas of transmission to south bridge circuit 46, then, south bridge circuit 46 just can transmit this image data further to north bridge circuit 44.Known as industry, this image data is encoded via a pre-defined algorithm (for example MPEG-2) and handled, in addition, central processing unit 42 performed known play-back application (playbackapplication) then can be deciphered processing to reduce this image data to the image data of coding, for driving signal, and this driving signal just transfers to audio-visual playing controller 54 further to image signal that should image data in last display control circuit 50 conversions.At this moment, being arranged at video signal transmission circuit 62 in the audio-visual playing controller 54 promptly can handle this driving signal and correctly drive screen 56.Similarly, follow the voice data of this image data also can be deciphered by central processing unit 42 performed known play-back application simultaneously, voice data after this known play-back application output decoding is to sound effect processing circuit 51 then, and sound effect processing circuit 51 just converting digital voice data for the sound signal of simulation with further driving loudspeaker 57.Note that as mentioned above, the audio-visual playing controller 54 of the present invention can compatible (compatible) in the mechanism of known audio-visual broadcast.
Another embodiment of the present invention is that the data system that CD-ROM drive 52 is exported directly transfers to audio-visual playing controller 54, and does not need to carry out via south bridge circuit 46 control and the processing of related data transmission.Known as industry, the image data of coding can carry out corresponding decoding computing via software (software) or a hardware (hardware), for computer system shown in Figure 2 40, audio-visual playing controller 54 as a hardware decoder to decipher the image data of this coding, similarly, audio-visual playing controller 54 also can be handled the voice data of following this image data, in other words, audio-visual playing controller 54 replaces known play-back application provides decoding function to reduce the operating load (loading) of central processing unit 42, therefore just can order CD-ROM drive 52 that the data that this multifunctional digital disc or this videodisc sheet are read directly are sent to audio-visual playing controller 54 when this play-back application execution.
As previously mentioned, image decoding device 58 and audio code translator 64 are used for process image data and voice data respectively, shown image frame on 62 of scale unit 60 and the video signal transmission circuits control screen 56, and the voice data that audio code translator 64 can converting digitals for the sound effect signal of simulation to drive loudspeaker 57.In addition, south bridge circuit 46 is not handled the data that CD-ROM drive 52 is exported, so when the user uses a computer system 40 when playing the motion picture film that is stored on multifunctional digital disc or the videodisc sheet, for the assembly among the power zone block 66a, the operating load of its relevant data transmission also alleviates significantly, that is compared to known technology, therefore the power consumption that assembly produced among the power zone block 66a reduces significantly, cause computer system 40 when broadcast is stored in motion picture film on multifunctional digital disc or the videodisc sheet, its overall power consumption thereby reduce significantly.
As shown in the above description, when computer system 40 is a mobile computer, no matter this mobile computer (computer system 40) is in off-mode or open state, audio-visual playing controller 54 all can be used to reduce the power consumption of this mobile computer and the power-on time that prolongs the cell apparatus of this mobile computer, in addition, audio-visual playing controller 54 also can be used to handle the disc that is only writing down voice data, for example common music CD sheet (audio CD), SACD disc in promoting at present, DVD-AUDIO disc in perhaps promoting at present, and the play operation of the relevant play operation of above-mentioned disc and aforementioned image data is similar, therefore only is summarized as follows.
Suppose that computer system 40 is a mobile computer, and be in off-mode originally, so when a user push a button on CD-ROM drive 52 housings (for example one " PLAY " button or " OPEN " button) time, then power zone block 66b can be activated, please note, power zone block 66a still keeps closing and can't carry out known boot program, and for example ego function test (power-on-self-test, POST).So, this user just can insert store voice data disc (a for example music CD sheet) to CD-ROM drive 52, the voice data that CD-ROM drive 52 this moment is just noted down on this disc of fechtable, and transmit this voice data to audio-visual playing controller 54.Then, audio code translator 64 is just handled this voice data immediately, and the sound signal of the voice data of converting digital for simulating, and last, audio code translator 64 just drives loudspeaker 57 according to this sound signal.In addition, audio code translator 64 also can be used as a digital equalizer (digital equalizer), be used for adjusting to frequency response (frequencyresponse) that should sound signal, so, via assisting of audio code translator 64, the quality of the sound that loudspeaker 57 are exported just can promote therefore and further.
Be in open state as if computer system 40 executed boot programs, then operating voltage just can be imported each assembly that is under the jurisdiction of power zone block 66a, 66b, in other words, this moment, this voice data can be deciphered computing via hardware in the computer system 40 (for example audio-visual playing controller 54) or central processing unit 42 performed softwares (a for example known play-back application) as image data.Suppose that this voice data deciphers processing by known play-back application, then computer system 40 can ban use of audio-visual playing controller 54 to decipher this voice data, so the voice data that CD-ROM drive 52 is exported just can transfer to south bridge circuit 46, then, south bridge circuit 46 exports the voice data that it received to north bridge circuit 44 again, but last central processing unit 42 is this voice data of access just, and executory known play-back application just begins this voice data is deciphered computing at present.Voice data after the decoding just exports sound effect processing circuit 51 to, and behind the sound signal of voice data for simulation that sound effect processing circuit 51 is finished converting digital, sound effect processing circuit 51 promptly drives loudspeaker 57 according to the sound signal of this simulation.In addition, it should be noted that the audio-visual playing controller 54 of the present invention can be compatible with the mechanism of known audio-visual broadcast.
If audio-visual playing controller 54 is used for directly deciphering this voice data, and do not need to carry out the control and the processing of related data transmission via south bridge circuit 46, so computer system 40 can ban use of south bridge circuit 46 to handle the related data transmission matters of this voice data, so the voice data that CD-ROM drive 52 is exported just directly transfers to audio-visual playing controller 54, then, audio code translator 64 begins the voice data that is received is deciphered computing, and the voice data of converting digital is the sound signal of simulation, at last, audio code translator 64 drives loudspeaker 57 according to the sound signal of this simulation.Because the circuit unit that is arranged among the power zone block 66a is not used for handling the voice data of being exported by CD-ROM drive 52, thus the power consumption of computer system 40 just with reduction.
Computer system 40 can be aforesaid mobile computer, or a desktop PC (desktop computer).For desktop PC, the operation the when running that is arranged on the assembly among the power zone block 66b is arranged on aforementioned mobile computer to this assembly is similar.For instance, audio-visual playing controller 54 is compatible with the mechanism of known audio-visual broadcast, in addition, audio-visual playing controller 54 can directly be handled the multi-medium data that CD-ROM drive 52 is exported, do not handle this multi-medium data and need not start south bridge circuit 46, thus the power consumption of this desktop PC also with reduction.When this desktop PC is in off-mode or open state, the assembly that is arranged among the power zone block 66a can not intervened the processing of this multi-medium data, in addition, only there is assembly among the power zone block 66b to be activated and handles this multi-medium data, so the present invention plays the purpose that the framework of video-audio data also can reach the power consumption that reduces desktop PC.
In the above-described embodiments, user optionally (selectively) adopts the mechanism of known broadcast video-audio data to come play multimedia data or the mechanism of using the present invention to play video-audio data is come play multimedia data, that is, the mechanism that the audio-visual playing controller 54 of the present invention can be play video-audio data according to mechanism or the present invention of known broadcast video-audio data and normally the running, so the purposes of the audio-visual playing controller 54 of the present invention and mode of operation extremely have elasticity (flexible).
In addition, loudspeaker 57 shown in Figure 2 can include a plurality of loudspeaker units (speaker unit), are used for when computer system 40 movie films producing splendid around audio.For audio-visual playing controller 54, audio-visual playing controller 54 can be arranged on the one chip on the motherboard or be arranged on the slot (slot) that is electrically connected on this motherboard or the expansion board (expansioncard) of connector (connector) on.For instance, single-chip (system-on-a-chip, SOC) technology is very ripe, so image decoding device 58, scale unit 60, audio code translator 64, and circuit such as video signal transmission circuit 62 all can be incorporated in the same chip and therefore corresponding less chip size with produce lower power consumption, and this chip is just handled as a multimedia play system and is recorded in the image data on the video disc and is recorded in voice data on the music CD sheet.If audio-visual playing controller 54 is installed on this expansion board, whether whether the startup of then audio-visual playing controller 54 mainly be via corresponding slot or connector and import audio-visual playing controller 54 according to action required voltage, for instance, this expansion board is applicable to the employed PCMCIA slot of mobile computer or is applicable to the employed PCI slot of desktop PC, so when to this PCMCIA slot or this PCI slot power, then this PCMCIA slot or this PCI slot just can provide operating voltage to be provided with the expansion board of audio-visual playing controller 54 with startup.
Please note, image data and voice data can be stored on a discs or the disk sheet (magneticdisk), as mentioned above, computer system 40 uses CD-ROM drive 52 to capture the data that are recorded on the discs, yet, computer system 40 also can be used a disc driver (magnetic disk drive), and for example a Winchester disk drive (hard-disk drive) captures the data that are recorded on the disk sheet.According to functional block diagram shown in Figure 2, but CD-ROM drive 52 can be replaced so that the data on the computer system 40 accessing disk sheets by a disc driver, that is this disc driver can belong to power zone block 66b, for play multimedia data, significantly, the operation of this disc driver is identical with the operation of CD-ROM drive 52, and for convenience of explanation, the functional block diagram of therefore direct use Fig. 2 illustrates the operation of this disc driver.Suppose a known disk drive to replace CD-ROM drive shown in Figure 2 52 and be arranged in the computer system 40, when computer system 40 not during the starting up, be arranged in power zone block 66b disc driver can as CD-ROM drive 52 usually the multi-medium data of transmission log on disk sheet to audio-visual playing controller 54, then, audio-visual playing controller 54 just drive screen 56 with output to image frame that should multi-medium data.Similarly, when starting when computer system 40 executed boot programs, the disc driver that is arranged in power zone block 66b also can be as the usually direct multi-medium data of transmission log on disk sheet of CD-ROM drive 52 to audio-visual playing controller 54, and need not export this multi-medium data to south bridge circuit 46 to carry out the control and the processing of data transmission by south bridge circuit 46, then, audio-visual playing controller 54 just drive screen 56 with output to image frame that should multi-medium data.In other words, data memory device (for example a CD-ROM drive or a disc driver) must be arranged among the power zone block 66b, that is any data memory device system that is used for exporting required multi-medium data is arranged at power zone block 66b, so when power zone block 66b starts, the data memory device that is arranged in power zone block 66b just can successfully be exported required multi-medium data to audio-visual playing controller 54, and audio-visual then playing controller 54 is just directly handled this multi-medium data and successfully reached the fundamental purpose of power saving.
Compared to known computer systems, computer system of the present invention includes an audio-visual playing controller, it can not carry out boot program and keep running normally under the off-mode in this computer system, so when wanting to play the image data of a corresponding motion picture film as if a user, audio-visual playing controller is only arranged, screen, and loudspeaker can start, in other words, owing to only there is the part assembly to consume electric power, therefore the power consumption that is produced just reduces computer system of the present invention significantly in the process of playing this multi-medium data.In addition, because the user does not need to start computer system and fully enters open state and just can use this computer system play multimedia data, so the user can be very convenient and be utilized this computer system to come play multimedia data simply, and need not wait for that this computer system finishes tediously long boot program.In addition, do not carry out boot program, so therefore the power consumption of this computer system also reduces owing to need not start this computer system.If this computer system has entered open state, the audio-visual playing controller of the present invention can directly be handled this multi-medium data and not need the intervention of south bridge circuit and central processing unit etc., so under this situation, therefore the power consumption of this computer system also reduces.
The above only is preferred embodiment of the present invention, and all equalizations of doing according to claim of the present invention change and modify, and all should belong to the covering scope of patent of the present invention.
Claims (14)
1. a computer system is play the method for a multi-medium data, and this computer system includes:
One central processing unit is used for controlling the running of this computer system;
One storage device is used for reading this multi-medium data;
One bridgt circuit is electrically connected between this central processing unit and this storage device, is used for coordinating the data transmission between this central processing unit and this storage device; And
One output unit;
This method includes:
Provide an audio-visual playing controller to give this computer system, this audio-visual playing controller is electrically connected between this storage device and this output unit;
Supply with the required operating voltage of this audio-visual playing controller and this output unit running, and do not supply with this central processing unit and the required operating voltage of this bridge voltage running;
Control this storage device and transmit this multi-medium data, do not handle this multi-medium data and do not start this bridgt circuit to this audio-visual playing controller; And
Use this audio-visual playing controller to handle this multi-medium data, and drive this output unit and play this multi-medium data.
2. the method for claim 1, wherein this storage device is a CD-ROM drive.
3. method as claimed in claim 2, wherein this multi-medium data is stored on the discs.
4. method as claimed in claim 3, wherein this discs is a multifunctional digital disc.
5. method as claimed in claim 3, wherein this discs is a videodisc sheet.
6. method as claimed in claim 3, wherein this discs is a music CD sheet.
7. the method for claim 1, wherein this storage device is a disc driver.
8. the method for claim 1, wherein this computer system is a mobile computer or a desktop PC.
9. the method for claim 1, wherein this output unit includes at least one screen.
10. method as claimed in claim 9, wherein this audio-visual playing controller includes an image decoding device, a scale unit, and a video signal transmission circuit, this method also includes:
Use this image decoding device to decipher this multi-medium data to produce one first image signal;
Using this scale unit to change this first image signal is one second image signal, corresponding one first display resolution of this first image signal, corresponding one second display resolution of this second image signal; And
Use this video signal transmission circuit to transmit this second image signal to this screen, this screen shows image frame that should multi-medium data according to this second image signal.
11. the method for claim 1, wherein this output unit includes at least one loudspeaker.
12. method as claimed in claim 9, wherein this audio-visual playing controller includes an audio code translator, and this method also includes:
Use this this multi-medium data of audio decoder for decoding producing a sound signal, and use this audio code translator to export this sound signal to drive this loudspeaker.
13. the method for claim 1, this central processing unit wherein, this audio-visual playing controller, and this bridgt circuit all is arranged on the motherboard of this computer system.
14. the method for claim 1, wherein this central processing unit and this bridgt circuit all are arranged on the motherboard of this computer system, and this audio-visual playing controller is arranged on the expansion board, and this expansion board is electrically connected on this motherboard.
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| CN 03147487 CN1265262C (en) | 2003-07-14 | 2003-07-14 | Method for reducing consumed power by computer system during multimedia data play |
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| CN 03147487 CN1265262C (en) | 2003-07-14 | 2003-07-14 | Method for reducing consumed power by computer system during multimedia data play |
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| CN1570810A CN1570810A (en) | 2005-01-26 |
| CN1265262C true CN1265262C (en) | 2006-07-19 |
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| US7643731B2 (en) * | 2004-01-23 | 2010-01-05 | Osamu Kobayashi | Low power DVD playback in a portable computing system |
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2003
- 2003-07-14 CN CN 03147487 patent/CN1265262C/en not_active Expired - Fee Related
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| Publication number | Publication date |
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| CN1570810A (en) | 2005-01-26 |
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