JP2000215546A - Timer video recording device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a timer video recording device capable of recording a video correctly, even when a timer video recording is started in a non-signal state. SOLUTION: This timer video recording device is provided with a tuner 1 and a video recording and reproducing device 4, to start the recording of a television signal received by the tuner 1 by a timer set in a microcomputer 7A. A non-signal detecting circuit 8 detects whether or not the television signal is in a non-signal state, when the video recording is started by the timer. When it is detected that the television signal is in the non-signal state by the circuit 8, the channel selection by the tuner 1 is waited and the video recording is made to be on stand by.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to a timer recording device.

[0002]

2. Description of the Related Art FIG. 3 is a block diagram showing an example of a conventional timer recording apparatus, and FIG. 4 is a flowchart showing the operation thereof. FIG. 3 shows a configuration in which the timer recorder is built in the television receiver. In FIG. 3, a television broadcast wave received by the tuner 1 is converted into an IF signal and input to the IF circuit 2. IF
The circuit 2 generates a video signal from the IF signal and inputs the video signal to the video chroma circuit 3 and the recording / reproducing device 4.

A video chroma circuit 3 processes an input video signal and inputs the processed video signal to a cathode ray tube (CRT) 6 as an example of a display unit via a switch 5. The recording and playback device 4 records the input video signal. A microcomputer (hereinafter abbreviated as a microcomputer) 7 controls channel selection by the tuner 1, signal processing in the video chroma circuit 3, and recording and reproduction in the recording and reproduction device 4. The video signal reproduced by the recording / reproducing device 4 is input to the CRT 6 via the switch 5. Although not shown here, the microcomputer 7 also controls switching of the switch 5.

[0004] Here, referring to FIG. 4, an operation when the recording and reproduction device 4 starts recording by a timer set by the microcomputer 7 will be described. In FIG. 4, when the timer operates in step S1, step S1 is executed.
A television signal is input at 2 and a channel is selected at step S3. Then, in step S4, recording is started.

[0005]

As described above, in the conventional timer recording apparatus, recording starts irrespective of the state of the input signal. As an example, when timer recording the first program in the morning, if the recording start time is set earlier than the actual broadcast time, the television signal is switched from no signal to signaled after timer recording starts. It will be replaced.

At this time, in the case of a channel allocation having a frequency shifted from that of a normal channel allocation such as an offset channel, since a television signal is not inputted at the time of starting the timer recording, the normal channel allocation is performed. Channels are selected by channel allocation. As a result, even if a normal signal (offset channel signal) to be recorded is subsequently input,
Since the frequency is shifted, there is a problem that the video is recorded with the frequency shifted. In addition, since recording is started even when there is no signal, there is a problem that useless recording is performed.

The present invention has been made in view of such a problem, and even if timer recording is started in a no-signal state,
An object of the present invention is to provide a timer recording device capable of correctly recording.

[0008]

According to the present invention, there is provided a tuner (1) for solving the above-mentioned problems of the prior art.
And a recording device (4), wherein recording of a television signal received by the tuner by a timer is started. When recording is started by the timer, whether or not the television signal is no signal A non-signal detection circuit (8) for detecting whether there is no signal, and a standby means for waiting for channel selection by the tuner when no signal is detected by the non-signal detection circuit. Provide a timer recording device,
(B) A timer recording device comprising a tuner (1) and a recording device (4), wherein recording of a television signal received by the tuner is started by a timer. A no-signal detection circuit (8) for detecting whether or not there is no signal; and standby means for waiting for recording by the recording device when the no-signal detection circuit detects no signal. It is intended to provide a timer recording apparatus characterized in that it is configured.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, a timer recording apparatus according to the present invention will be described with reference to the accompanying drawings. FIG. 1 is a block diagram showing an embodiment of a timer recording apparatus according to the present invention.
5 is a flowchart for explaining the operation of the timer recording device of the present invention. In FIG. 1, the same parts as those in FIG. 3 are denoted by the same reference numerals.

In this embodiment shown in FIG. 1, as an example, a configuration in which a timer recording device is incorporated in a television receiver is shown. Of course, video tape recorders (VT
R). In FIG. 1, a television broadcast wave received by a tuner 1 is an IF signal,
Input to the F circuit 2. The IF circuit 2 generates a video signal from the IF signal, and inputs the video signal to a video chroma circuit 3, a recording / reproducing device 4, and a no-signal detection circuit 8 newly provided according to the present invention.

The video chroma circuit 3 processes the input video signal and inputs it via a switch 5 to a cathode ray tube (CRT) 6 which is an example of a display unit. The recording and playback device 4 records the input video signal. A microcomputer (hereinafter abbreviated as a microcomputer) 7 controls channel selection by the tuner 1, signal processing in the video chroma circuit 3, and recording and reproduction in the recording and reproduction device 4. The video signal reproduced by the recording / reproducing device 4 is input to the CRT 6 via the switch 5. Although not shown here, the microcomputer 7 also controls switching of the switch 5.

The no-signal detection circuit 8 detects whether or not the signal of the selected channel is a no-signal by detecting the presence or absence of a synchronization signal, for example. A detection signal from the no-signal detection circuit 8 is input to the microcomputer 7. The microcomputer 7 operates according to the detection signal from the no-signal detection circuit 8 when the recording / reproduction device 4 starts recording by timer recording.

Here, the operation of the recording / reproducing apparatus 4 for starting recording by a timer set by the microcomputer 7 will be described with reference to FIG. In FIG. 2, when the timer operates in step S11, a television signal (including no signal) is input in step S12. In step S13, it is determined whether the television signal is a no signal. If there is no signal, step S1
At 4, the tuner 1 waits for a channel selection. In step S15, it is further determined whether or not there is no signal. If there is no signal, the process returns to step S14. As a result, the standby state is maintained as long as there is no signal.

If it is determined in step S13 that the television signal is not a signal, a channel is selected in step S16. If there is no signal at step S15, a channel is selected at step S16. Thereafter, recording is started in step S17. As described above, the tuning in the tuner 1 is on standby, and the start of timer recording is on standby as long as there is no signal. Therefore, the conventional trouble does not occur. In addition, the present invention has an effect of preventing useless recording when there is no signal.

By the way, various proposals have been made to stop the timer recording itself when no signal is detected, but in that case, recording cannot be performed at all. On the other hand, according to the present invention, even if timer recording is started in a no-signal state, it is possible to perform correct recording.

[0016]

As described in detail above, a timer recording apparatus according to the present invention comprises a tuner and a recording apparatus, and starts recording of a television signal received by the tuner using the timer. When starting recording by, a no-signal detection circuit that detects whether or not the television signal is a no-signal, and if the no-signal detection circuit detects that there is no signal, waits for tuning by the tuner, Since the apparatus is provided with the standby means for waiting for the recording, even if the timer recording is started in a no-signal state, the recording can be performed correctly.

[Brief description of the drawings]

FIG. 1 is a block diagram showing one embodiment of the present invention.

FIG. 2 is a flowchart for explaining the operation of the present invention.

FIG. 3 is a block diagram showing a conventional example.

FIG. 4 is a flowchart for explaining the operation of the conventional example.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Tuner 2 IF circuit 3 Video chroma circuit 4 Recording / playback device (recording device) 5 Switch 6 Cathode ray tube 7 Microcomputer 8 No signal detection circuit

Claims (2)

[Claims] 1. A timer recording device, comprising a tuner and a recording device, wherein recording of a television signal received by the tuner is started by a timer. A non-signal detection circuit for detecting whether or not there is a signal, and a standby unit for waiting for channel selection by the tuner when the absence of a signal is detected by the non-signal detection circuit. Timer recording device. 2. A timer recording device, comprising a tuner and a recording device, wherein recording of a television signal received by the tuner is started by a timer. A non-signal detection circuit for detecting whether or not there is a signal, and a standby unit for, when the non-signal detection circuit detects that there is no signal, waiting for recording by the recording device, being provided. Timer recording device.