CN103686035B - Mobile high definition connects data converter and mobile high definition connects data transfer device - Google Patents
Mobile high definition connects data converter and mobile high definition connects data transfer device Download PDFInfo
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- CN103686035B CN103686035B CN201210355118.7A CN201210355118A CN103686035B CN 103686035 B CN103686035 B CN 103686035B CN 201210355118 A CN201210355118 A CN 201210355118A CN 103686035 B CN103686035 B CN 103686035B
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Abstract
The invention discloses a kind of mobile high definition connection data converters and mobile high definition to connect data transfer device, mobile high definition connection data converter includes: a data decoding circuit, for decoding an input data according to a mobile high definition linking format, and export a decoding data；And a data separation circuit, it is coupled to the data decoding circuit, isolates multiple output datas with from the decoding data.A kind of mobile high definition connection data transfer device includes: decoding an input data according to a mobile high definition linking format, and export a decoding data；And multiple output datas are isolated from the decoding data.
Description
Technical field
Disclosed embodiment is relevant to data conversion, and espespecially a kind of mobile high definition that is applied to connects (Mobile
High-Definition Link, MHL) standard data converter and related data conversion method.
Background technique
Mobile high definition connection standard specialize in movable video-audio connection innovative technology, make the exportable 1080P of mobile device with
The high definition film of 60Hz picture update rate (Frame Rate, FR) is to large-sized monitor, and one end is via existing mini logical
Data and audio-visual connection are executed with universal serial bus 2.0 connectivity ports (micro USB), the other end is via conversion to high-definition multimedia
Interface (High Definition Multimedia Interface, HDMI) standard is connect with television set or display.
The receiving end of traditional high-definition media interface is when receiving the data of mobile high definition connection, in addition to high-definition multimedia
Except the medium plan circuit of interface, dedicated medium plan circuit is connected it is still necessary to mobile high definition, however two
Set circuit can make chip area increase, and improve cost.The demand is considered, therefore needs the design of an innovation, can be allowed existing
Receiving end receives the data of mobile high definition connection in a manner of efficient and low cost.
Summary of the invention
One of the objects of the present invention is to provide a kind of data converters and dependency number applied to mobile high definition connection
According to conversion method.
First embodiment according to the present invention discloses a kind of mobile high definition connection data converter, includes a data solution
Code circuit for decoding an input data according to a mobile high definition linking format, and exports a decoding data；And one number
According to split circuit, it is coupled to the data decoding circuit, isolates multiple output datas with from the decoding data.
Second embodiment according to the present invention discloses a kind of mobile high definition connection data transfer device, includes according to one
Mobile high definition linking format decodes an input data, and exports a decoding data；And it is isolated from the decoding data more
A output data.
Data conversion is connected by using mobile high definition connection data converter proposed by the invention and mobile high definition
Method can make the receiving end of high-definition media interface be compatible to mobile high definition connection but not increase excessive circuit cost,
Achieve the purpose that reduce cost.
Detailed description of the invention
Fig. 1 is the schematic diagram for the embodiment that mobile high definition of the present invention connects data converter.
Fig. 2 is the schematic diagram that data decoding circuit shown in FIG. 1 finds out data boundary using the control period.
Fig. 3 is showing for the first operation that data decoding circuit shown in FIG. 1 finds out data boundary using guard band
It is intended to.
Fig. 4 is showing for second of operation that data decoding circuit shown in FIG. 1 finds out data boundary using guard band
It is intended to.
Fig. 5 is showing for the third operation that data decoding circuit shown in FIG. 1 finds out data boundary using guard band
It is intended to.
Wherein, the reference numerals are as follows:
100 mobile high definitions connect data converter；
102 data decoding circuits；
104 data separation circuits；
106 physical layers；
108 medium plan circuits.
Specific embodiment
Some vocabulary is used in the specification and claims to censure specific element.Technology people in fields
Member is, it is to be appreciated that manufacturer may call same element with different nouns.It this specification and subsequent applies for a patent
Range is not in such a way that the difference of title is as element is distinguished, but with the difference of element functionally as differentiation
Criterion.It is an open term in the "comprising" of specification in the whole text and subsequent claims mentioned in, therefore should be construed to
" including but not limited to ".In addition, " coupling " word includes any direct and indirect electrical connection herein.Therefore, if
One first device of described in the text is coupled to a second device, then second dress can be directly electrically connected in by representing the first device
It sets, or is electrically connected indirectly by other devices or connection means to the second device.
Referring to FIG. 1, Fig. 1 is that mobile high definition of the present invention connects (Mobile High-Definition Link, MHL) number
According to the schematic diagram of the embodiment of converter.In the present embodiment, mobile high definition connection data converter 100 includes data decoding electricity
Road 102 and data separation circuit 104, wherein data decoding circuit 102 is used to be decoded according to a mobile high definition linking format
An input data d_in caused by a physical layer (physical layer, PHY layer) 106, and export a decoding
Data d_out, and data separation circuit 104 is then coupled to data decoding circuit 102, and according to a high-definition media interface
(High Definition Multimedia Interface, HDMI) format, comes what mask data decoding circuit 102 was exported
The decoding data d_out of one channel (channel), to obtain the output data in multiple channels.For example, respectively corresponding three primary colors
Output data d_out1, d_out2 and d_out3 in three channels of RGB, however, the present invention is not limited thereto.In addition,
Output data d_out1, d_out2 and d_out3 are separately transferred to by data separation circuit 104 meets a high-definition media interface
In medium plan (Media Access Control, MAC) circuit 108 of specification.It holds, mobile high definition connects data and turns
The data (including image, sound and control) of mobile high definition linking format are converted into high-definition media interface lattice by parallel operation 100
The data of formula allow the data of the high-definition media interface format to be met the medium access control of high-definition media interface specification
Circuit 108 processed is directly read.
About data decoding circuit 102, an at least given data pattern defined in mobile high definition linking format is compared
Data boundary is found out with input data d_in, and carrys out decoded input data d_in according to the data boundary to export decoding data
d_out.Referring to FIG. 2, the data decoding circuit 102 that Fig. 2 show mobile high definition connection data converter of the present invention uses control
The schematic diagram of period (control period) processed.In mode (the 24 bits per pixel (BPP) of each 24 bit of pixel
Mode under), if data decoding circuit 102 receives the carrying out data pattern in continuous three control periods, the then data next received
It can be sequentially the periodic cycle of three channel datas, i.e. d_out_ch0, d_out_ch1, d_out_ch2, d_out_ch0, d_
Out_ch1, d_out_ch2 ..., and so on.And at packed-pixel mode (packed-pixel mode), data decoding
If circuit 102 receives carrying out data pattern composed by continuous two control periods, then the data next received can be sequentially d_
Out_ch0, d_out_ch1, d_out_ch0, d_out_ch1 ..., and so on.
The data decoding circuit 102 that Fig. 3, Fig. 4 and Fig. 5 show mobile high definition connection data converter of the present invention uses
The schematic diagram of guard band (guard band).In Fig. 3, under the mode of each 24 bit of pixel, if data decoding circuit 102
It is to receive 1 data islands head of channel (Ch1 data island leading) and channel 2 data islands head (Ch2 data island
Leading carrying out data pattern composed by), the then data next received can be sequentially d_out_ch0, d_out_ch1, d_out_
Ch2, d_out_ch0, d_out_ch1, d_out_ch2 ..., and so on.And under packed-pixel mode, data decoding circuit
If 102 receive the carrying out data pattern of independent 1 data islands head of a channel, then the data next received can be sequentially d_out_
Ch0, d_out_ch1, d_out_ch0, d_out_ch1 ..., and so on.In Fig. 4, under the mode of each 24 bit of pixel,
If data decoding circuit 102 receives 1 data islands tail of channel (Ch1data island trailing) and 2 data islands tail of channel
Carrying out data pattern composed by (Ch2 data island trailing), then it represents that the data received are over.And it is combining
Under voxel model, if data decoding circuit 102 receives the carrying out data pattern of independent 1 data islands tail of a channel, then it represents that receive
Data be over.In Fig. 5, under the mode of each 24 bit of pixel, if data decoding circuit 102 receives 0 shadow of channel
As head (Ch0 video leading), 1 camera of channel (Ch1 video leading) and channel 2 camera (Ch2 video
Leading carrying out data pattern composed by), the then data next received can be sequentially d_out_ch0, d_out_ch1, d_out_
Ch2, d_out_ch0, d_out_ch1, d_out_ch2 ..., and so on.And under packed-pixel mode, data decoding circuit
If 102 receive carrying out data pattern composed by 0 data islands head of channel and 1 camera of channel, then the data next received can be according to
Sequence be d_out_ch0, d_out_ch1, d_out_ch0, d_out_ch1 ..., and so on.
Data decoding circuit 102 is based on control period and/or guard band (guard band) and successfully finds out data side
Behind boundary, decoding data d_out can be exported to data separation circuit 104, then by data separation circuit 104 according to the more matchmakers of high definition
The Three-channel data that sequence is lined up in decoding data d_out is respectively converted into parallel output data d_ by body interface specification
Out1, d_out2 and d_out3 are input to medium plan circuit 108 (mode of each 24 bit of pixel), or will row
Parallel output data d_out1 and d_out2, which are respectively converted into, at two channel datas of sequence is input to medium plan
Circuit 108 (packed-pixel mode).
Data conversion is connected by using mobile high definition connection data converter proposed by the invention and mobile high definition
Method can make the receiving end of high-definition media interface be compatible to mobile high definition connection but not increase excessive circuit cost,
Achieve the purpose that reduce cost.
The above description is only an embodiment of the present invention, all equivalent changes and modifications done according to the claims in the present invention, all
It should belong to the scope of the present invention.
Claims (6)
1. a kind of mobile high definition connects data converter, include:
One data decoding circuit for decoding an input data according to a mobile high definition linking format, and exports a decoding
Data；And
One data separation circuit is coupled to the data decoding circuit, isolates multiple output datas with from the decoding data；
Wherein the data decoding circuit compares defined in the mobile high definition linking format that at least a given data pattern is defeated with this
Enter the consecutive numbers of given data pattern in data to find out data boundary, and according to the data boundary come decode the input data with
Export the decoding data；
Wherein an at least given data pattern includes a control cycle data or a guard band data.
2. mobile high definition as described in claim 1 connects data converter, wherein the data separation circuit is more according to a high definition
Media interface format isolates multiple output data from the decoding data.
3. mobile high definition as claimed in claim 2 connects data converter, wherein the data separation circuit separately will be multiple defeated
Data are transferred to the medium plan circuit for meeting a high-definition media interface specification out.
4. a kind of mobile high definition connects data transfer device, include:
An input data is decoded according to a mobile high definition linking format, and exports a decoding data；And
Multiple output datas are isolated from the decoding data；
An input data is wherein decoded according to a mobile high definition linking format, and the step of exporting a decoding data compares and be somebody's turn to do
The consecutive numbers of given data pattern in an at least given data pattern defined in mobile high definition linking format and the input data
Data boundary is found out, and decode the input data according to the data boundary to export the decoding data；
Wherein an at least given data pattern includes a control cycle data or a guard band data.
5. mobile high definition as claimed in claim 4 connects data transfer device, wherein isolating from the decoding data multiple defeated
The step of data isolate multiple output data from the decoding data according to a high-definition media interface format out.
6. mobile high definition as claimed in claim 5 connects data transfer device, wherein isolating from the decoding data multiple defeated
Multiple output data is separately transferred to the medium plan electricity for meeting a high-definition media interface specification by the step of data out
Road.
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| CN201210355118.7A CN103686035B (en) | 2012-09-21 | 2012-09-21 | Mobile high definition connects data converter and mobile high definition connects data transfer device |
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Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102377970A (en) * | 2011-10-27 | 2012-03-14 | 浙江一舟电子科技股份有限公司 | MHL (Mobile High-Definition Link) data conversion system |
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| GB9930788D0 (en) * | 1999-12-30 | 2000-02-16 | Koninkl Philips Electronics Nv | Method and apparatus for converting data streams |
| US8159927B2 (en) * | 2007-02-16 | 2012-04-17 | Gennum Corporation | Transmit, receive, and cross-talk cancellation filters for back channelling |
| US8755431B2 (en) * | 2010-01-14 | 2014-06-17 | Silicon Image, Inc. | Transmission and detection of multi-channel signals in reduced channel format |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102377970A (en) * | 2011-10-27 | 2012-03-14 | 浙江一舟电子科技股份有限公司 | MHL (Mobile High-Definition Link) data conversion system |
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