KR19980044359A - Tuner changer for systems with multiple tuners - Google Patents

Abstract

The present invention provides a data input unit for inputting data for selecting an operation of a system, a system controller that scans data output from the data input unit, outputs tuning data, and thereby controls overall operation of a peripheral device, and the system controller. A plurality of tuners for tuning and outputting a broadcast signal according to the tuning data output from the control unit, and a composite video signal output from each of the plurality of tuners in accordance with a control signal supplied from the outside to the video and audio signal processing unit and the recording and reproducing apparatus. It is composed of a switching unit for switching and supplying, the multi-tuner to select the output signal of the multi-tuner to supply to the recording and reproducing apparatus to select the composite video signal respectively output from the multiple tuner to be recorded on the recording medium according to the user's desire To tuner switching devices in systems equipped with The.

Description

Tuner switching device for systems with multiple tuners

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a tuner switching device of a system having multiple tuners, and more particularly, to an output signal of a multiple tuner so that a composite video signal output from each of multiple tuners can be selected and recorded on a recording medium according to a user's desire. A tuner switching device in a system having multiple tuners for selecting and supplying the recording and reproducing apparatus.

Conventional televisions with multiple tuners include a first tuner (3) electrically connected to the input of the video and audio processing section (5) and used exclusively for reproduction as shown in FIG. 1, and a recording and reproducing apparatus (6). And the second tuner 4 used for recording only, and the first and second tuners 3 and 4 are tuned according to the data inputted to the data input unit 1, and at the same time the overall operation of the peripheral system is performed. It consists of a system controller (2) to control by.

In the conventional television having the above-described configuration, since the first tuner 3 is fixed only for reproduction and the second tuner 4 is fixed only for recording, the broadcast signal received by the first tuner 3 is recorded. And in order to record on the recording medium seated on the deck of the player 6, there is a problem that the second tuner 4 needs to be tuned by re-entering tuning data to the data input unit 1.

Accordingly, the present invention has been made to solve the above-mentioned shortcomings, and an object of the present invention is to select a composite video signal output from each of the multiple tuners according to a user's desire, and to record the mixed image signal on a recording medium. A tuner switching device in a system having multiple tuners for selecting an output signal and supplying the output signal to a recording and reproducing apparatus.

In order to achieve the above object, a tuner switching device according to the present invention includes a data input unit to which data for selecting an operation of a system is input, and outputs tuning data by scanning data output from the data input unit and accordingly of a peripheral device. A system controller for controlling the overall operation, a plurality of tuners for tuning and outputting a broadcast signal according to the tuning data output from the system controller, and a control signal supplied from the outside of the composite video signals respectively output from the plurality of tuners. And a plurality of switching units which switch and supply the video and audio signal processing units to the recording and reproducing apparatus.

1 is a schematic diagram of a conventional television with multiple tuners;

2 is a circuit diagram showing a tuner switching device of a system with multiple tuners according to the present invention;

Explanation of symbols on the main parts of the drawings

10 ... Data input 20 ... System controller

30 ... the first tuner 40 ... the second tuner

50 ... first switching unit 60 ... first switching unit

70 Video and audio signal processing unit 80 Recording and playback device

Hereinafter, the present invention will be described in more detail with reference to the illustrated drawings.

2 is a circuit diagram showing a tuner switching device of a system with multiple tuners according to the present invention.

In FIG. 2, the system controller 20 scans data output from the data input unit 10 to output tuning data and accordingly outputs predetermined control signals for overall control of the operation of the peripheral device. The two tuners 30 and 40 are configured to tune and output broadcast signals according to the tuning data output from the system controller 20.

Meanwhile, the first switching unit 50 inputs the composite video signal output from the first tuner 30 to the video and audio signal processing unit 70 or the recording and reproducing apparatus 80 according to the operation of the switch SW. It consists of switching elements (Q1) (Q2) for switching as possible, the switching element (Q1) (Q2) is operated in accordance with the operation of the switching switch (SW) to the output terminal of the first tuner (30) video and audio signal Switch to be electrically connected to the processing unit 70 or the input terminal of the recording and reproducing apparatus 80,

Meanwhile, the second switching unit 60 inputs the composite video signal output from the second tuner 40 to the video and audio signal processing unit 70 or the recording and reproducing apparatus 80 according to the operation of the switch SW. It consists of switching elements Q3 and Q4 which switch as much as possible.

The overall operation of the tuner switching device of the system with the multiple tuners having the above configuration is as follows.

Video and audio signal processing unit 70 receives different broadcast signals from the first and second tuners 30 and 40 by using a television employing a device according to the present invention and receives the broadcast signals received from the first tuner 30. If the user switches the switching terminal of the switch (SW) to a line supplied with the power supply voltage (Vcc) to supply to the recording and reproducing apparatus 80 to supply the broadcast signal received from the second tuner 40, The switching elements Q1 and Q3 of the first and second switching units 50 and 60 are turned on and the signals output from the first tuner 30 are supplied to and reproduced by the video and audio signal processing unit 70. The signal output from the two tuner 40 is supplied to the recording and reproducing section 80 and stored in the recording medium.

As described above, the signal output from the first tuner 30 is displayed on the screen, and the signal output from the first tuner 30 is recorded on the recording medium while the signal output from the second tuner 40 is recorded on the recording medium. When the user switches the switching terminal of the switch SW to the ground terminal for recording, the switching elements Q2 and Q4 of the first and second switching units 50 and 60 are turned on and output from the first tuner 30. The signal is supplied to the recording and reproducing section 80 and recorded on the recording medium, and the signal output from the second tuner 40 is supplied to the video and audio signal processing section 70 and displayed on the screen.

According to the present invention described above, according to the user's desire, there is an effect of selecting a composite video signal output from each of the multiple tuners and recording them on a recording medium or displaying them on a screen.

Claims (2)

A data input unit for inputting data for selecting an operation of the system, a system controller that scans the data output from the data input unit, outputs tuning data and thereby controls overall operation of the peripheral device, and is output from the system controller A plurality of tuners for tuning and outputting a broadcast signal according to the tuning data, and a composite video signal output from each of the plurality of tuners are switched to a video and audio signal processing unit and a recording and reproducing apparatus according to a control signal supplied from the outside. Tuner switching device of a system having multiple tuners, characterized in that consisting of a plurality of switching unit. The switching device of claim 1, wherein the switching unit switches a plurality of composite video signals output from the first and second tuners to be selectively input to the video and audio signal processing unit or the recording and reproducing apparatus according to the operation of the changeover switch. Tuner switching device of a system having multiple tuners, characterized in that consisting of.