JPH0834574B2 - Video tape recorder - Google Patents

Description

The present invention relates to a video tape recorder (VTR) having a timer reservation function.

(B) Conventional technology In recent years, various functions have been added to VTRs.
For example, in Japanese Patent Application No. Sho 63-145047 previously filed by the present applicant, a pilot signal for bilingual broadcasting included in bilingual broadcasting is detected, and a pilot signal for bilingual broadcasting is detected based on the detection result. We propose a VTR with a system that extends the timer scheduled recording start time until is detected.

(C) Problems to be Solved by the Invention By the way, when it is predicted that the broadcast time of a program broadcast before a reserved program in the conventional VTR is predicted to be extended, the broadcast date of the program to be reserved as timer reservation setting, It is necessary to set data such as the recording start time and the recording end time, and also to set the extension timer button, which is disadvantageous in that the operation becomes complicated.

Further, during timer recording, even if the user wants to cut the commercial, there is a drawback that the viewer is not present and the unnecessary portion is recorded, and further, the magnetic tape is consumed more than necessary.

Therefore, it is an object of the present invention to solve such an inconvenience.

(D) Means for Solving the Problems Receiving means having pilot signal detecting means for detecting a pilot signal included in the television signal, recording means for recording the television signal obtained from the receiving means on a tape, and presetting The recording reservation means for driving the receiving means and the recording means to record a desired program at the designated date and time, and the recording reservation means set by the pilot signal detecting means until the pilot signal is detected. It comprises a means for delaying the recording start time, and a control means for ending the recording when the pilot signal is not detected by the pilot signal detecting means for a predetermined time after the recording is started.

Further, after the recording is started, the recording means is temporarily stopped when the pilot signal is no longer detected by the pilot signal detecting means, and is restarted when the pilot signal is detected by the pilot signal detecting means within a predetermined time. It is composed of and.

(E) Action According to the present invention, even if the broadcast before the reserved program is extended in time, the recording start time of the reserved program is automatically extended by the pilot signal detecting means for detecting the pilot signal in the television signal, Further, since the recording is terminated when the pilot signal after the recording is started cannot be detected for a predetermined time, it is not necessary to set the end time, and the timer reservation operation can be simplified.

Also, when the pilot signal cannot be detected after the recording is started, the recording is temporarily stopped, and when the arbitrary pilot signal is detected within the predetermined time, the recording is restarted, so unnecessary portions such as commercials are cut. It is possible to save the magnetic tape.

(F) Embodiment An embodiment of the VTR of the present invention will be described below with reference to FIGS. 1 and 2.

FIG. 1 is a block diagram of a VTR in which the present invention is implemented. At the time of timer reservation, the reservation button group 1 is operated to make a broadcast date of a program to be reserved in the timer microcomputer 2,
Enter the broadcast channel and recording start time. As shown in hardware, the microcomputer 2 is composed of a reservation storage circuit 3, a reservation execution circuit 4, a clock circuit 5, a 5-minute timer circuit 6, and a discrimination circuit 7, as shown in the figure. The data of the broadcast date, broadcast channel, and recording start time input from the reservation button 1 is stored in the reservation storage circuit 3.

If it is predicted that the broadcast time of the program to be broadcast before the reserved program will be extended, if the voice selection button 8 in the reservation button group 1 is input, that information is also stored in the reservation storage circuit 3 Memorized in. Here, the audio selection button 8 is provided with a pilot signal selection button 8a for bilingual broadcasting and a pilot signal selection button 8b for stereo broadcasting included in the television signal, and whether the reserved program is a bilingual broadcasting. I'm trying to choose depending on whether it's a stereo broadcast.

Further, the display of the operation state and the setting contents at this time is displayed on the display unit 9 by the output of the microcomputer 2.

On the other hand, the RF signal received by the antenna 10 is converted into the IF signal selected by the tuner 11, of which the VIF signal (video intermediate frequency signal) is the V / S recording circuit (video / audio) via the VIF circuit 12. It is supplied to the recording circuit) 13. The SIF signal (audio intermediate frequency signal) output from the tuner 10 is passed through the SIF circuit 14 and the audio / detection circuit 15 to the V / S recording circuit 13 described above.
Is supplied to. Here, the audio / detection circuit 15 detects the presence / absence of a 922.5 Hz pilot signal for bilingual broadcasting or a 982.5 Hz pilot signal for stereo broadcasting in the audio signal from the SIF circuit 14, and when the pilot signal is detected, The detection signal (P ₁ ) or (P ₂ ) is supplied to the discrimination circuit 7 of the microcomputer 2.

After the timer reservation is set, the reservation execution circuit 4 compares the data from the clock circuit 5 representing the real time with the data of the earliest start time among the reservation contents stored in the reservation storage circuit 3, and Recording data (R)
Is supplied to the system controller 16, the channel selection circuit 17, and the determination circuit 7 described later. The channel selection circuit 17 is a recording signal (R)
When receiving, the tuner 10 is controlled to operate so as to receive a channel that matches the reservation content. Further, when the system controller 16 receives the recording signal (R), V.
The S recording circuit 13 and the mechanism control circuit 18 are controlled respectively, and the V / S recording circuit 13 records video and audio signals on the magnetic tape. The mechanism control circuit 18 stops the tape running, and controls the tape running to a temporary stop state or a normal running state.

The determination circuit 7 in the microcomputer 2 is the reservation execution circuit 4 described above.
When receiving the recording signal (R) from
The voice data (pilot signal for two-language broadcast or pilot signal for stereo broadcast) selected by the voice selection button 8 is recognized, and the discrimination circuit 7 is initialized.

The discrimination circuit 7 determines whether the detection signal (P ₁ ) or (P ₂ ) is output from the audio / detection circuit 15 at the time of receiving the recording signal (R). If the detection signal (P ₁ ) or (P ₂ ) is output from the voice / detection circuit 15, the discrimination circuit 7
Supplies the control signal (C) to the reservation execution circuit 4 to execute the reservation recording, so that the reservation execution circuit 4 reserves the recording according to the control signal (C) and the reservation information stored in the reservation storage circuit 3. Start operation.

Even after the reserved recording operation is started, the determination circuit 7 continues to determine whether the detection signal (P ₁ ) or (P ₂ ) from the audio / detection circuit 15 is supplied. When the detection signal (P ₁ ) or (P ₂ ) is supplied, the determination circuit 7 supplies the control signal (C) to the reservation execution circuit 4, and the reservation execution circuit 4 continues the reservation recording in response to this. Control. When the detection signal (P ₁ ) or (P ₂ ) is not supplied, the discrimination circuit 7 supplies the control signal (S) to the system controller 16 and the 5-minute timer circuit 6.

When the system controller 16 receives the control signal (S), it controls the mechanism control circuit 18 to suspend the tape running. On the other hand, when the 5-minute timer circuit 6 receives the control signal (S), the 5-minute timer circuit 6 is reset to 5
Start counting minutes. The timer circuit 6 outputs a control signal (T) to the determination circuit 7 after 5 minutes.

In response to this, the discrimination circuit 7 supplies the control signal (S ') to the system controller 16. This control signal (S ')
When the system controller 16 receives this, the mechanism control circuit 18 is controlled to control the tape running from the paused state to the stopped state. Further, the discrimination circuit 7 supplies the control signal (S) to the system controller 16 when the detection signal (P ₁ ) or (P ₂ ) from the voice / detection circuit 15 is supplied again within 5 minutes. When the system controller 16 receives this control signal (S), the mechanism control circuit 18 is controlled to control the tape running from the temporary stop state to the normal running state again.

In the VTR having the above-described configuration, as shown in FIG. 2, for example, a Western-style program (two-language broadcasting) that is broadcast from 9:00 to 10:00 PM is scheduled to be broadcast before the baseball program ( For example, if the broadcast is started at PM9: 30 for the extension of stereo broadcasting, the reserved signal will not be started until PM9: 30 because the detection signal (P ₁ ) for bilingual broadcasting is not detected.
Scheduled recording is executed when the detection signal (P ₁ ) for bilingual broadcasting is detected at 9:30 PM.

During the Western program reservation recording, commercials are also broadcast. Generally, commercials are broadcast by stereo broadcasting or monaural broadcasting. Commercials that are broadcast between Western programs are broadcast in a short time, and commercials that are broadcast between a Western program and the next program are relatively long. Broadcast for hours. Focusing on this, the voice / detection circuit 15
The discriminating circuit 7 discriminates the detection signal for stereo broadcasting (P ₂ ) or the detection signal for monaural broadcasting (no output), thereby temporarily stopping the tape running. Then, the five-minute timer circuit 6 is operated, and when the commercial is within five minutes, the detection signal (P ₁ ) for bilingual broadcasting is detected again, so that the discrimination circuit 7 restarts the reserved recording. Further, in the case of a commercial exceeding 5 minutes, the detection signal (P ₁ ) for the bilingual broadcast is not detected, so that the judgment circuit 7 judges that the Western picture program has ended and the judgment circuit 7 stops the tape running and ends the reserved recording. .

In this embodiment, the reservation of the bilingual broadcast is explained, but it can be applied when the reserved program is the stereo broadcast. Further, when the voice selection button 8 is not set at the timer reservation, recording is started from the reserved recording start time (PM9: 00) even though the baseball broadcast is extended as in the conventional case.

(G) Effects of the Invention As described above, according to the present invention, the following effects can be obtained when the program to be timer-recorded is a bilingual broadcast such as a Western picture program or a music program, or a stereo broadcast.

(A) When the broadcast time of the previous program or the program before it is extended, the recording start time of the program to be recorded is automatically shifted by the extended time of the previous program based on the preset audio selection data. Further, after the recording is started, if the set pilot signal cannot be discriminated for a predetermined time, the recording is ended, so that the end time need not be set and the timer reservation operation can be simplified.

(B) When the preset pilot signal cannot be discriminated based on the preset audio selection data during the reserved recording execution, the recording is temporarily stopped, and when the set pilot signal is discriminated within a predetermined time, the recording is resumed. Since the recording is started, unnecessary portions such as commercials can be cut, and the magnetic tape can be recorded with the minimum required amount of tape.

[Brief description of drawings]

FIG. 1 is a block diagram of a video tape recorder embodying the present invention, and FIG. 2 is a diagram for explaining its operation. 1 ... Recording reservation button (recording reservation means), 2 ... Timer microcomputer (control means), 13 ... VS recording circuit (recording means), 15 ... Voice / detection circuit (pilot signal detection means)

Claims (2)

[Claims] 1. A receiving means having a pilot signal detecting means for detecting a pilot signal included in a television signal, a recording means for recording a television signal obtained from the receiving means on a tape, and a preset date and time. Recording reservation means for driving the receiving means and recording means to record a desired program, and delaying the recording start time set by the recording reservation means until the pilot signal is detected by the pilot signal detection means. And a control means for ending the recording when the pilot signal is not detected by the pilot signal detecting means for a predetermined time after the recording is started. 2. The video tape recorder according to claim 1, wherein after the recording is started, when the pilot signal is no longer detected by the pilot signal detecting means, the recording is temporarily stopped and the pilot signal is detected within a predetermined time. A video tape recorder comprising control means for restarting recording when a pilot signal is detected by the means.