JPH11205729A - Digital broadcast receiver having reservation video recording function and reservation video recording method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To record a video image by allowing a conventional video recording device at present to convert signals of various digital broadcast standards. SOLUTION: The receiver is provided with a down converter 112 that applies down-conversion to a video signal with a digital format in matching with an input format of a video recording device and with a controller 118 that recognizes a reservation video recording mode, applies a control signal required for reservation video recording to the video recording device and controls the video recording device so that the down-converted signal is recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a digital broadcast receiver having a timer recording function and a timer recording method.
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method and a circuit for controlling a recorder by a digital broadcast receiver and freely recording a desired digital broadcast.

[0002]

2. Description of the Related Art There is a digital recorder capable of recording a signal received in a digital television receiver which will be used in the future or a signal having a processed digital format in a digital video signal processor which is currently used. It is expected that it will take some time before it appears. This leads to a problem that video signals having a digital format cannot be recorded even if they are recorded regardless of time.

[0003]

SUMMARY OF THE INVENTION The present invention has been devised in view of the above-mentioned problems, and records a video signal of a digital format desired to be recorded into a signal having a format of an analog broadcasting system which is now commonly used. It is an object of the present invention to provide a digital broadcast receiver capable of performing scheduled recording by converting a signal so as to be suitable for a recorder that performs recording and directly controlling the recorder.

Another object of the present invention is to use a slab system as a recorder for recording a signal having a format of an analog broadcast system which is now commonly used, and to provide a video signal having a digital format to a recorder in a digital broadcast receiver. It is an object of the present invention to provide a method of converting a signal into a suitable signal and performing scheduled recording on a recorder.

[0005]

In order to achieve the above-mentioned object, a digital broadcast receiver having a reservation recording function according to the present invention comprises a digital recorder for recording a signal having a format of an analog broadcasting system. A down-converter for down-converting a video signal having a digital format so as to be suitable for an input format of a recorder, and a down-converter for supplying the down-converted video signal, in a digital broadcast receiver for reserved recording of a video signal having The system includes a controller that recognizes the mode, applies a control signal required for reserved recording to the recorder, and controls the downconverted signal to be recorded in the recorder.

According to another aspect of the present invention, there is provided a reservation recording method for recording a video signal having a digital format received by a digital broadcast receiver and a video signal having an analog broadcast format. A down-converting a video signal having a digital format in accordance with an input format of the recorder, supplying the down-converted video signal, and recording a recording control signal based on the reserved recording mode. And controlling the down-converted signal to be recorded in the recorder.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Preferred embodiments of a digital broadcast receiver having a scheduled recording function and a scheduled recording method according to the present invention will be described below with reference to the accompanying drawings. As shown in FIG. 1, normal signal blocks 102 to
In addition, the down converter 112 performs down-conversion of the output of the format converter 110 so as to be suitable for the input format of the recorder 200 shown in FIG. Output to recorder 20
Interface 114 for transmitting to 0
A key recognizer 116 for recognizing key data of a recorder remote controller, and a controller 118 for controlling the recorder 200 by applying control key data necessary for recording corresponding to the key recognized by the user to the recorder 200. Be composed.

Next, the operation of a digital broadcast receiver having a reservation recording function will be described. First, the received digital format broadcast signal is processed as follows.
The channel demodulator 102 demodulates a large number of channel signals multiplexed in the form of a transmission packet, and applies the channel-demodulated transmission stream to a transmission stream demultiplexer (denoted as TS DEMUX) 104.

The TS DEMUX 104 extracts a video bit stream and an audio bit stream of a channel to be reserved for recording from the transmission stream under the control of the controller 118, and applies them to the video decoder 106 and the audio decoder 108, respectively. The video decoder 106 decodes the extracted video bit sequence and applies the signal Y / C restored as a decoded video signal to the format converter 110. The audio decoder 108 decodes the extracted audio bit sequence and outputs the recovered audio signal to the interface 114.
Is applied.

The format converter 110 is an HDTV (High D
efinition Television) or SDTV (Standard Defin)
video decoder 10 according to the specifications of the
6 to convert the format of the decoded video signal Y / C applied to generate the horizontal synchronization signal H_Sync and the driving clock signal CLK required for the video decoder 106. The down converter 112 is used for a video cassette recorder (VCR) or DVD.
(Digital Versatile Disc) In order to transmit not only to a recorder such as a player, but also to a signal processor adopting an analog broadcasting system, a video signal having a digital format applied from a format converter 110 is transmitted to an NTSC,
Analog broadcasting standards such as PAL, for example 720 ^* 48
Downconverts to 0 (interlace), 720 ^* 576 (interlace), etc. Here, the down-conversion performed by the down-converter 112 means down-sampling to reduce the resolution to a level suitable for the standard of the analog broadcasting system.

The interface 114 includes a down converter 112
The applied down-converted video data is converted into an analog signal and output in a suitable signal form such as a composite video signal or a video signal to be transmitted to the recorder 200. Also, the interface 114 is an audio decoder.
The restored audio signal applied from 108 is also output as a left / right audio signal or a stereo left / right audio signal.

On the other hand, the key recognizer 116 for performing the timer recording function is provided by the user with a remote controller (not shown) for the recorder.
Recognizes the key (for example, power key, recording key, stop key, etc.) used for scheduled recording entered using
The recognized key data is applied to the controller 118.
Here, the key recognizing device 116 can be constituted by a memory in which remote control key data of the recorder distributed at the time of production is stored in advance.

Next, an audio / video (A / V) is provided between the digital broadcast receiver and the recorder in order to perform the scheduled recording.
Must be connected so that data can be transmitted. When the user intends to perform the scheduled recording, when the user reserves the scheduled recording program using the remote controller for the recorder, the key recognizer 116 recognizes the programmed recording program key and applies it to the controller 118.

When the reserved time comes, the controller 118 applies the previously recognized power-on key data and recording key data to the key data input section 202 of the recorder 200 shown in FIG. At this time, the recorder 200 is powered on based on the power-on key data, and enters a standby state so that recording can be immediately performed based on the recording key data. Here, when the control key data applied from the controller 118 for the digital broadcast receiver is transmitted as a light emission signal, the key data input unit 202 may be a light receiving unit that receives the light emission signal.

The system and the servo controller 204 which recognize the control key data through the key data input section 202
Is, for example, the A / of the input / output (I / O) unit 206.
The selection data for selecting the A / V data transmitted to the V terminal is applied to the I / O unit 206. I / O unit 206
Selects the A / V data applied from the interface 114 of the receiver and applies it to the signal processor 208. The signal processor 208 performs signal processing suitable for the storage medium on the channel signal of the reserved program, and records or stores the data in the data storage unit 210.

When the recording of the desired channel program is completed in the data storage section 210, the controller 118 applies the stop key data and the power-off key data to the key data input section 202 of the recorder 200 to stop the operation of the recorder 200. ,
Power off. The present invention is a digital television broadcast signal,
The present invention is applicable to a receiver that receives a satellite broadcast signal and various terrestrial broadcast signals.

[0017]

The apparatus and method according to the present invention are currently widely used for recording a signal in an analog broadcasting format for a certain period of time even if various digital broadcasting standards have been proposed and these have been put to practical use. There is an advantage that signals of various digital broadcasting standards can be converted and recorded by using a recorder.

[Brief description of the drawings]

FIG. 1 is a block diagram of a digital broadcast receiver having a reservation recording function according to an embodiment of the present invention.

FIG. 2 is a block diagram following FIG. 1;

[Explanation of symbols]

 102 channel demodulator 104 TS DEMUX (Transmission Stream Demultiplexer) 106 video decoder 108 audio decoder 110 format converter 112 down converter 114 interface 116 key recognizer 118 controller 200 recorder 202 key data input section 204 system and Servo controller 206 I / O unit 208 Signal processor 210 Data storage

Claims (10)

[Claims] 1. A digital broadcast receiver for recording a video signal having a digital format on a recorder for recording a signal having a format of an analog broadcast system, wherein the digital format is adapted to an input format of the recorder. A down-converter for down-converting a video signal having a down-converted video signal and applying a control signal necessary for scheduled recording by recognizing a scheduled recording mode to the recorder, A controller that controls the down-converted signal to be recorded. 2. The digital broadcast receiver according to claim 1, further comprising a key recognizer for recognizing reserved recording key data applied by a dedicated key input unit of the recorder. 3. The digital broadcast receiver according to claim 2, wherein the key recognizer comprises a memory in which key data of a remote controller of the recorder capable of controlling recording is stored. 4. The digital broadcast receiver according to claim 1, further comprising an interface that interfaces with the recorder so that the down-converted video signal can be transmitted to the recorder. 5. The digital broadcast receiver according to claim 1, wherein the down converter performs down conversion on the digital format video signal so as to be compatible with an analog broadcasting standard such as NTSC or PAL. 6. A method for pre-recording a video signal having a digital format received by a digital broadcast receiver to a recorder for recording a video signal having a format of an analog broadcast system, comprising: Downconverting the video signal having the digital format according to the format,
Supplying a down-converted video signal; and (b) applying a recording control signal according to a scheduled recording mode to the recorder, and controlling the down-converted signal to be recorded in the recorder. A scheduled recording method comprising: 7. The reservation recording method according to claim 6, wherein in the step (a), the video signal in the digital format is down-converted so as to be suitable for an analog broadcasting standard such as NTSC or PAL. 8. The reservation recording method according to claim 6, wherein in the step (b), the reservation recording mode is set by a reservation recording key of a dedicated remote controller of the recorder. 9. The reservation method according to claim 8, further comprising the step of: (c) recognizing reservation recording key data of a dedicated remote controller of the recorder, and generating the recording control signal. Recording method. 10. A method for recording a video signal having a digital format received by a digital broadcast receiver in a recorder for recording a video signal having a format of an analog broadcasting system, comprising: (a) inputting the recording; (B) recognizing key data related to reserved recording of a dedicated key input unit of the recorder; (b) setting the recorder to a recording standby state by the recognized key data when a reserved time has elapsed; (D) down-converting a video signal having the digital format received at the reserved time according to the input format of the recorder, and supplying a down-converted video signal; and (d) the down-converted signal. (E) when the recording of the down-converted video signal corresponding to a reservation program is completed, the recording device Reserved recording method Oite recording characterized in that it comprises a step of controlling so as to stop.