JPH04205834A - Magnetic recording and reproducing apparatus - Google Patents

Abstract

PURPOSE:To immediately play back a program which has been videotaped by means of a timer by installing a circuit which automatically detects the beginning of a videotaped program in order to play back the program after it has been videotaped by means of the timer. CONSTITUTION:A signal is input to a timer 2 from an operating key 1. When a changeover switch 9 is set to an OFF state, a videotaping operation is performed by means of the timer. When the changeover switch 9 is set to an ON state and the videotaping reservation time by means of the timer exceeds the residual amount of a magnetic tape 8, the timer 2 instructs a drive circuit 7 to rewind the magnetic tape 8 via a system control circuit 4. At the starting time of a videotaping operation, the timer 2 sends information on a tuning operation to a tuner 3. The system control circuit 4 obtains information on the start of the videotaping operation from the timer 2 and instructs a videotaping mode. At the end time of the videotaping operation, information on the stop of the videotaping operation is sent to the system control circuit 4 from the timer 2, and instructs the drive circuit 7 and a signal processing circuit 6 to stop the videotaping operation and to rewind back to the beginning of a videotaped program. Thereby, the videotaped program can be played back immediately after the videotaping operation by means of the timer has been performed.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a method for executing scheduled recording in a magnetic recording/reproducing device and a method for reproducing after scheduled recording.

[Conventional technology]

Conventional timer recording is described in ``Recording and Playback of Broadcast Programs'' on pages 194 to 196 of ``NHK Home Video Technology'' edited by Japan Broadcasting Corporation. Programs can be repeatedly recorded at the same time every day or every week.

Next, the operation of conventional timer recording will be explained using FIG. Channel selection for timer recording from operation button 1,
The recording start date and time, end date and time, recording mode, etc. are input to the timer 2. When the timer 2 reaches the recording start date and time, the timer 2 sends channel selection information to the tuner 3, and sends the recording mode and recording start information to the system control circuit 4. The tuner 3 receives radio waves from the antenna 5, selects a station, and outputs the selected signal to the signal processing circuit 6. The system control circuit 4 instructs the signal processing circuit 6 and drive circuit 7 to start recording and to set the recording mode. The signal processing circuit 6 converts the input signal into a recording signal and records it on the magnetic tape 8.

When the recording end time comes, the system control circuit 4 receives recording stop information from the timer 2, and causes the drive circuit 7 and signal processing circuit 6 to stop recording.

The timer recording operation described above is generally controlled by software using a microcomputer as a timer.

[Problem to be solved by the invention]

The above conventional technology does not take into account playback after timer recording ends or confirmation of the remaining amount of magnetic tape in timer recording, and in order to watch a recorded program, the magnetic tape must be rewound and the beginning of the program must be searched. . Also, when making timer recording reservations, it is necessary to check the remaining amount of magnetic tape.

An object of the present invention is to make a timer-recorded program ready for immediate playback.

Another object of the present invention is to check the remaining amount of magnetic tape during timer recording.

Another object of the present invention is to bring a timer-recorded program into a state where it can be immediately played back, and then automatically bring it into a state where the next timer recording is executed.

Another object of the present invention is to automatically cancel and return to the timer recording reservation state.

[Means to solve the problem]

In order to achieve the above object, the present invention locates the beginning of a program at the time when recording ends.

In order to achieve the above-mentioned other purpose, when the remaining amount of the tape is insufficient, the tape is rewound to the beginning and the timer recording reservation state is entered.

In order to achieve the other objects mentioned above, a predetermined time before the next execution of timer recording, fast-forwarding is automatically performed to the end of the previously recorded program, and a timer recording reservation state is entered.

In order to achieve the other objects mentioned above, the recording reservation state is canceled every time timer recording is executed, and the recording reservation state is returned to the recording reservation state a predetermined time before the next timer recording is executed.

[Effect]

The timer causes the magnetic tape to be rewound when the reserved recording time exceeds the remaining amount of the magnetic tape.

Furthermore, each time recording is completed, the recording reservation state is canceled and restored a predetermined time before the next recording is to be executed.

In addition, rewinding is performed to play back the recorded program immediately.

〔Example〕

Embodiments of the present invention will be described below with reference to FIG.

Channel selection for timer recording using operation button 1.

The recording start date and time, end date and time, recording mode, etc. are input to the timer 2. When the changeover switch 9 is off, timer recording is performed as in the conventional case. When the changeover switch 9 is on and the timer recording reservation time exceeds the remaining amount of the magnetic tape 8, the timer 2 causes the drive circuit 7 to rewind the magnetic tape 8 via the system control circuit 4. When the recording start time arrives, the timer 2 sends channel selection information to the tuner 3.

The tuner 3 receives radio waves from the antenna 5, selects a station, and outputs the selected signal to the signal processing circuit 6.

Further, the system control circuit 4 obtains recording start information from the timer 2 and instructs the drive circuit 7 and the signal processing circuit 6 to start recording and to set the recording mode. The signal processing circuit 6 converts the input signal into a recording signal and records it on the magnetic tape 8. When the recording end time is reached, the system control circuit 4 receives recording stop information from the timer 2, and causes the drive circuit 7 and signal processing circuit 6 to stop recording and cue the recorded program. Further, when a certain period of time before the next timer recording, the timer 2 causes the drive circuit 7 to fast-forward the magnetic tape 8 via the system control circuit 4 until the end of recording of the previously recorded program. When the recording start time arrives, the timer 2 sends information on the recording start and recording mode to the system control circuit 4.
Recording is performed on magnetic tape 8 in the same way as the previous recording. timer 2
When all timer recordings are completed, the system control circuit 4 causes the drive circuit 7 to rewind the magnetic tape 8 to the beginning of the first recorded program.

Although the present embodiment does not describe the means for determining the remaining amount of magnetic tape, it can be determined from the ratio of the rotational angular velocity of the magnetic tape supply and take-up reel during boat fishing.

Further, since the timer generally uses a microcomputer, this embodiment can also be implemented using software.

〔Effect of the invention〕

As explained above, according to the present invention, by adding a changeover switch and simple software to the timer of a magnetic recording/reproducing device, it is no longer necessary to check the remaining amount of magnetic tape when making timer recording reservations, and timer recording can be executed. You can immediately play the recorded program.

[Brief explanation of the drawing]

FIG. 1 is a block diagram of an embodiment of the present invention, and FIG. 2 is a block diagram of a conventional example. (Explanation of symbols) 1...Operation button, 2...Timer. 3...Tuner. 4. System control circuit. 5. Antenna, 6. Signal processing circuit. 7. Drive circuit, 8 Magnetic tape. 9. Changeover switch. Leather 1 Figure 2nd

Claims (1)

[Claims] 1. A magnetic recording and reproducing device having a timer recording function, characterized in that a circuit is provided to automatically cue the recorded program for playback after timer recording. Device. 2. A magnetic recording/playback device having a timer recording function is characterized by being equipped with a circuit that automatically rewinds to the beginning of the tape and then starts recording when the scheduled recording time exceeds the remaining capacity of the magnetic tape. magnetic recording and reproducing device. 3. The magnetic recording playback according to claim 1, further comprising a circuit that automatically fast-forwards to the end of the recorded program at a predetermined time before the execution of the next recording reservation after the program is started. Device. 4. A magnetic recording and reproducing device having a timer recording function is characterized in that it is equipped with a circuit that automatically cancels the recording reservation state each time recording is completed and returns to the recording reservation state a predetermined time before the next recording execution. A magnetic recording and reproducing device.