KR100371178B1 - Reservation recording method and apparatus for digital tv - Google Patents

Abstract

The present invention relates to a technique for controlling a recording operation through a specific pin of the skat jack according to the TV mode and the reservation recording state of V-Cal. According to the present invention, a digital board for receiving a digital high frequency signal, separating audio and video data from a transport stream, decoding video MPEG data, and inserting an on-screen signal or a graphic into a demodulated video signal ( 210; The video output from the digital composite video signal, the analog composite video signal output from the digital board, the composite video signal selected from the external V-Cal 233 through the scart jack to output the video signal to the video signal output unit side A switching unit 222; The operation mode of the V-Cal 233 is determined through a specific pin of the scart jack 226C connecting the TV-V-Cal 233 and the current TV mode is determined. A microcomputer 224 that reserves or cancels a reservation recording of a digital video signal output from the digital board 210; Scart pin controller 225 for transmitting a signal input through a specific pin of the scart jack 226C to the microcomputer 224, and outputs a recording control command to the V-C under the control of the microcomputer 224. It is achieved by the analog TV board 220 composed of).

Description

RESERVATION RECORDING METHOD AND APPARATUS FOR DIGITAL TV}

The present invention relates to a technology for controlling a reservation recording operation according to the current situation of TV and V-Cal, and more particularly, in a system for performing a reservation recording function of V-Cal or displaying a video signal reproduced by using a SCART. The present invention relates to a digital TV reservation recording method and apparatus for controlling a recording operation through a specific pin of a skat jack according to a TV mode and a reservation recording state of a VRC.

1 is a block diagram showing a connection relationship of a video system according to the prior art, as shown therein, by decoding a digital video signal received in an encrypted form to detect an original video signal, and the scart jack SCART1, ( A digital set-top box 101 for outputting a video signal and a recording control signal to the TV 102 and the VR 103 through SCART2); A TV (102) for displaying a digital broadcast signal input from the digital set-top box (101) or a video signal reproduced in the VRL (103); It consists of a V-103 (103) for recording the video signal input from the digital set-top box 101 or TV 102, and reproduces the video signal and outputs the video information when output to the TV 102 side, The operation thereof is as follows.

The digital set-top box 101 detects the original video signal by decoding the digital video signal received in an encrypted form, and outputs the video signal to the TV 102 through the scart jack SCART1 or the scart jack SCART2. ) Is output to the VRF 103 side.

When the reserved recording is performed on the V-103, the voltage of a predetermined level (for example, 5V) for indicating the entry of the reserved recording mode together with the video signal in the set-top box 101 is reached when the scheduled recording time is reached. It is input to the VRF 103 side through SCART2, thereby automatically switching to the recording mode to perform the recording function.

On the other hand, when watching the video signal reproduced and output from the TV 103 through the TV 102, and outputs the video signal to the TV 102 side through the scart jack (SCART1, SCART2), It outputs the information about the image through the pin (PIN8) of the scart jack.

The image information refers to aspect ratio information (16: 9, 4: 3) of the currently provided image, information for notifying that the current recording signal is reproduced, and the like, which is represented by a voltage level as follows.

Therefore, the TV 102 side automatically switches to the VRC side to which the reproduced video signal is input based on the video information, and sets the aspect ratio to 16: 9 or 4: 3.

In the conventional video system, however, when a signal for informing the reservation recording mode is input from the digital set-top box to the VRT, the recording mode is automatically switched to the recording mode to perform the reservation recording function. The video information is transmitted to the TV side with the signal, and automatically switched to the VRC side, and then the input image is displayed at an appropriate aspect ratio. Therefore, when performing the scheduled recording, the recording operation cannot be properly controlled according to the standby state of the TV or the reservation recording state of the VRC, which causes inconvenience in use.

Accordingly, an object of the present invention is to check the reservation mode of the TV mode and V-Cal in the system which performs the reservation recording function of V-Cal or displays the video signal reproduced by using the same scart jack on the TV, and based on the result of the confirmation. The present invention provides a method and apparatus for reservation recording of a digital TV that controls a recording operation through a specific pin of a loss jack.

1 is a block diagram showing a connection relationship of a video system according to the prior art.

Figure 2 is a block diagram of one embodiment of a digital TV reservation recording apparatus according to the present invention.

Figure 3 is a signal flow diagram showing the processing of the digital TV reservation recording method according to the present invention.

*** Description of the symbols for the main parts of the drawings ***

210: digital board 211: tuning and demodulation

212: central processing unit 213: MPEG decoder and graphics insertion unit

220: analog TV board 221: tuning and image detector

222: video switching unit 223: video signal output unit

224: microcomputer 225: scart pin control

226A-226C: SCART JACK 231: VRC / Game

232,233: VRC

According to the first aspect of the present invention, a function of a digital set-top box may be incorporated in a TV to control input / output operations of a specific pin (PIN8) when operating a scart jack.

According to the second aspect of the present invention, the specific pin of the scart jack can be controlled to control the input / output operation of the signal through the scart jack.

According to the third aspect of the present invention, reservation recording can be performed more easily when making a reservation recording of a digital video signal on a VRC.

According to an embodiment of the present invention, a reservation recording method in a digital TV includes, when a scheduled recording time is reached, an input signal from a VR on a specific pin of a skat jack connecting the TV and the TV when the TV mode is a standby mode. A first step of canceling a preset recording by checking whether there is an input signal or an input signal on the pin in a video mode; If the TV mode is in the standby mode when the reserved recording time is reached, and it is determined that there is no input signal on the specific pin, it switches to the active standby mode and outputs a recording start command through the specific pin to execute the scheduled recording. A second process of switching to the passive standby mode after the operation; When the scheduled recording time is reached, check whether the channel currently being watched is the reserved recording channel, and if it is not the reserved recording channel, cancel the scheduled recording by entering the user's intention through a message or by executing the recording start command through the specific pin. And a third process of outputting the reservation recording.

FIG. 2 is a block diagram illustrating an embodiment of a digital TV reservation recording apparatus according to the present invention. As shown in FIG. 2, a digital high frequency signal D_RF is tuned to detect a high frequency signal of a required channel, and a coded orthogonal frequency multiplexing is performed. A tuning and demodulation unit 211 for outputting a transport stream (TPS) by demodulating in a split (COFDM) manner; A central processing unit (212) for separating audio and video data from the transport stream (TPS); An MPEG decoder and graphic inserting unit (213) for decoding the video MPEG data (MPEG_DATA) input from the central processing unit (212) and inserting an on-screen signal or a graphic into a demodulated video signal; A tuning and image detector 221 for tuning an analog high frequency signal A_RF to detect a high frequency signal of a required channel and detecting an image intermediate frequency signal; Digital composite video signal (D_CVBS1) output from the MPEG decoder and graphics insertion unit 213, analog composite video signal (A_CVBS) output from the tuning and image detection unit 221, and each of the scart jacks 226A-226C. A video switching unit 222 which selects and outputs one composite video signal CVBS from the supplied composite video signals SC1_CVBS-SC3_CVBS; The digital color signal D_RGB output from the MPEG decoder and graphic inserter 213, the composite video signal CVBS output from the video switching unit 222, and the color signal SCART_RGB output from the scart jack 226A are output. A video signal output unit 223 which receives the input and outputs a color signal RGB to the CPT side, and outputs a horizontal / vertical synchronization signal (H / V) necessary for deflection of the video signal; Switching the video such that an external video signal input through the skat jack is selected based on the check result by checking whether the input signals AV1-AV3 are present on a specific pin PIN8 of the skat jacks 226A-226C. A microcomputer 224 for controlling the switching operation of the unit 222; A scart pin controller 225 for transmitting an input signal AV3 from the specific pin PIN8 to the microcomputer 224 and outputting a recording start signal under its control; The TV image signal TV_OUT output from the video switching unit 222 is transmitted to an external VRC / game device 231, and the video signal SC1_CVBS output from the VLC / game device 231 is video switched. A scart jack 226A for delivery to the unit 222; The monitor image signal MO_OUT output from the video switching unit 222 is transmitted to an external VLC 232, and the video image switching unit 222 transmits the composite image signal SC2_CVBS output from the VRL 232. A scart jack 226B for delivery to; The digital video signal D_OUT output from the MPEG decoder and graphic insertion unit 213 is transferred to an external VLC 233, and the composite video signal SC3_CVBS output from the VRL 233 is a video switching unit. It is configured as a scart jack 226C for delivery to 222, described in detail with reference to Figure 3 attached to the operation of the present invention configured as described above are as follows.

First, the reception process of the digital video signal in the digital board 210 will be described.

The tuning and demodulation unit 211 tunes the received digital high frequency signal D_RF to detect a high frequency signal of a channel required by a user, and codes the high frequency signal by coded orthogonal frequency division multiplexing (COFDM). Demodulation process to output a transport stream (TPS).

The CPU 212 separates audio and video data from the transport stream TPS output from the tuning and demodulation unit 211.

The MPEG decoder and graphic inserting unit 213 decodes the video MPEG data (MPEG_DATA) input from the CPU 212 and inserts an on-screen signal or a graphic into the demodulated video signal to be used by each unit. Supply a video signal of the form.

That is, the MPEG decoder and graphic inserter 213 supplies the digital composite video signal D_CVBS1 to the video switching unit 222, supplies the digital color signal D_RGB to the video signal output unit 223, and the scart jack. The digital image signal D_OUT is supplied to the VRC 233 through 226C.

The MPEG decoder and graphic insertion unit 213 has an embedded RGB encoder, and receives not only a fixed internal synchronization signal but also an external synchronization signal (H / V), which is required according to an analog input or a digital input of a digital TV. To be used.

Meanwhile, the analog TV board 220 will be described with reference to the processing of each video signal.

The tuning and image detector 221 tunes the received analog high frequency signal A_RF to detect a high frequency signal of a channel requested by a user, and detects an image intermediate frequency signal from the high frequency signal.

The video switching unit 222 is a digital composite video signal D_CVBS1 output from the MPEG decoder and graphics insertion unit 213, an analog composite video signal A_CVBS output from the tuning and image detector 221, and each skat. The composite video signals SC1_CVBS-SC3_CVBS output from the jacks 226A-226C are supplied, and under the control of the microcomputer 224, one composite video signal CVBS is selected and output from the jacks 226A-226C.

The video signal output unit 223 is a digital color signal D_RGB output from the MPEG decoder and graphic insertion unit 213, a composite video signal CVBS output from the video switching unit 222, and the skat jack 226A. It receives the color signal (SCART_RGB) output from and outputs the red, green, and blue color signal (RGB) to CPT, and also outputs the horizontal / vertical synchronization signal (H / V) necessary for deflection of the video signal. do.

For reference, when the digital broadcast mode is selected, the video switching unit 222 selects and outputs the digital composite video signal D_CVBS1, and the video signal output unit 223 is configured to execute the MPEG decoder and the graphic insertion unit ( The digital color signal D_RGB output from 213 is selected and output to the CPT side. In this case, a synchronization signal separated from the digital composite video signal D_CVBS1 is used.

The microcomputer 224 outputs the composite video signal SC_CVBS when any external device of the VR / game machine 231, V232, 233 is driven to output the composite video signal SC_CVBS. The video signal output unit 223 performs a monitoring and switching control function to be output to the CPT side.

To this end, the microcomputer 224 checks whether an input signal AV1-AV3 is supplied to a specific pin PIN8 of the skat jacks 226A-226C, and if the microcomputer 224 is present, inputs it through the skat jack. The switching operation of the video switching unit 222 is controlled to select an external composite video signal SC_CVBS.

The scart pin controller 225 transmits the input signal AV3 of the specific pin PIN8 of the scart jack 226C to the microcomputer 224, and the control signal from the microcomputer 224 in the state of reserved recording is set. When (PIN8_CTL) is inputted, a recording start signal is output to the VRC 233 through a specific pin PIN8 of the scart jack 226C.

The scart jack 226A transmits the TV video signal TV_OUT output from the video switching unit 222 to an external VRC / game device 231, and outputs a composite video signal output from the VRC / game device 231. (SC1_CVBS) is used to deliver to the video switching unit 222.

In addition, the scart jack 226B transmits the monitor video signal MO_OUT output from the video switching unit 222 to an external VRC 232, and outputs a composite video signal reproduced and output from the VRC 232. SC2_CVBS) is used to deliver to the video switching unit 222.

Also, the scart jack 226C transmits the digital video signal D_OUT output from the MPEG decoder and the graphic insertion unit 213 to an external VLC 233, and reproduces and outputs the VCD 233. The image signal SC3_CVBS is used to transmit the video signal to the video switching unit 222.

As described above, the microcomputer 224 outputs the composite video signal SC3_CVBS from the VR 233 based on the input signal AV3 of the specific pin PIN8 of the scart jack 226C. To control the switching operation of the video switching unit 222 so that the composite video signal SC3_CVBS is output to the CPT side, and when the scheduled recording is set according to whether the composite video signal SC3_CVBS is input. The recording operation of the V-al 233 is controlled through the specific pin PIN8. The reservation recording control method as described above will be described in more detail with reference to FIG.

The microcomputer 224 sets a reservation recording according to a user's request, and then confirms that the set reservation recording time is reached. (S1)

When the reserved recording time is reached, the input signal AV3 is present on a specific pin PIN8 of the skat jack 226C in the TV standby mode, or the input signal AV3 on the specific pin PIN8 in the video mode. If it is found to exist, if it is found to exist, the reserved reservation recording is forcibly canceled (S2-S6).

The reason why the reserved recording is forcibly canceled under the above conditions is that if the reserved recording is executed under the above conditions, the control signal PIN8_CTL is output from the microcomputer 224 at the start of the reserved recording, and the scat pin The control unit 225 outputs a signal (DC voltage) indicating the start of recording to a specific pin PIN8 of the skat jack 226C. The video signal is reproduced and output from the VRC 233 so that the skat jack ( Since DC voltage AV3 is already inputted to a specific pin PIN8 of 226C), a collision occurs between them.

However, if the TV mode is the standby mode when the reserved recording time is reached, and it is determined that the input signal AV3 does not exist at a specific pin PIN8 of the skat jack 226C, the analog TV board 220 After switching off the portion except the microcomputer 224 to the active standby mode in which the digital board 210 is turned on, the reserved recording channel is tuned and the scat pin controller 225 and the skat jack 226C. The recording start signal ("high") is output to the V-al 233 through the specific pin PIN8 of the < RTI ID = 0.0 >) < / RTI >

After confirming that the recording is terminated, the SCAT pin controller 225 is controlled to output a "low" signal to a specific pin PIN8 of the SCART jack 226C, and the TV mode is set to the microcomputer 224. The analog TV board 220 and the digital board 210 except for this are all switched to the passive standby mode in which the off state (S9).

On the other hand, if the current TV mode is not in the standby mode and the video mode when the reserved recording time is reached, it is checked whether the channel currently being watched is the reserved recording channel (S10).

As a result of the above confirmation, if it is determined that the channel currently being watched is not the reserved recording channel, a reserved recording confirmation message is output on the screen, and when the user presses the reservation recording cancel key, the reservation recording is canceled. (S10-S12 )

At this time, if the user selects the reserved recording channel to perform the reserved recording as it is, or if the channel currently being viewed as the reserved recording channel as a result of the check, the scat pin controller 225 and the skat jack 226C as described above. The scheduled recording is executed by outputting a recording start signal (“high”) to the VRC 233 through the specific pin PIN8 of the device (S13, S14).

Thereafter, after confirming that the reservation recording is completed, the "scarf" signal is output to the specific pin PIN8 of the scart jack 226C by controlling the scart pin controller 225 as described above (S15, S16).

As described in detail above, the present invention checks the reservation mode of the TV mode and the VRC in the system which performs the reservation recording function of the VRC using the same scart jack on the TV or displays the reproduced video signal. Based on the result, the recording operation can be controlled through a specific pin of the scart jack, thereby providing convenience in use.

Claims (4)

When the preset scheduled recording time is reached, the TV mode is in standby mode and there is an input signal from the VAL on a specific pin of the skat jack connecting the TV and the VRC, or an input signal on the pin in the video mode. A first step of canceling the preset reservation recording when it is determined that If the TV mode is in the standby mode when the reserved recording time is reached, and it is determined that there is no input signal on the specific pin, a recording start command is output through the specific pin to perform the scheduled recording and then switch to the standby mode. A second process of doing; If it is determined that the channel currently being watched is not the reserved recording channel when the reserved recording time is reached, the user can intentionally cancel the reservation recording or select the channel and start recording through the specific pin. And a third process of performing a reservation recording by outputting the digital TV reservation recording method. 2. The digital TV reservation according to claim 1, wherein when performing the reserved recording in the second process, all parts except the microcomputer of the analog TV board are turned off, and the reserved recording is performed while the digital board is turned on. How to record. A TV digital board for receiving and processing digital high frequency signals, separating audio and video data from a transport stream, decoding the video MPEG data, and inserting on-screen signals or graphics into demodulated video signals; A video switching unit for selecting one composite video signal from a digital composite video signal, an analog composite video signal output from the digital board, and a composite video signal input from an external V-Cal through a scart jack and outputting the composite video signal to a video signal output unit; ; The specific mode of the SCAL jack that connects the TV and the V-Cal determines the operation mode of the V-Cal and the current TV mode, and according to the result of the determination, the digital video signal outputted from the TV digital board is determined. A microcomputer for making a reservation recording or canceling a reservation recording; The analog TV board is configured as a scat pin controller for transmitting a signal input through a specific pin of the skat jack to the microcomputer, and outputting a recording control command to the VLC under the control of the microcomputer. TV's reserved recording device. 4. The cart pin controller of claim 3, wherein the scart pin controller is configured to output a "high" or "low" signal to pin 8 of the scart jack under control of the microcomputer to execute or cancel the scheduled recording of the VRC. The device for recording a digital TV.