JPH0523676B2 - - Google Patents

Description

[Detailed description of the invention] (a) Industrial application field The present invention is directed to a VPS (video programming system).
This paper relates to a simple recording setting circuit for a VTR that uses .

(b) Prior Art In West Germany, a program reservation system called VPS (Video Program System) is being applied to video tape recorders. This VPS system is disclosed in West German Patent Publication No. 3828001 and West German Patent Publication No. 3243610. this
A VPS system records a desired program while the user is away, even when the broadcast time of the program varies.

The conventional video tape recorder having the VPS reservation function mentioned above will be explained below with reference to the circuit block diagram shown in FIG. The circuit shown in the figure is a VPS reservation execution mode in which a program of a channel in which a VPS code is multiplexed is recorded while the user is away according to the VPS code, and a program in which a desired channel is broadcast for a predetermined period of time according to the real time regardless of the presence or absence of a VPS code. A normal reservation execution mode for recording while at home can be set in advance when setting a reservation. This setting is made by the VPS switch 5, which sets the VPS reservation execution mode in the on state and the normal reservation execution mode in the off state. In both reservation execution modes, the reservation codes to be set are a reservation execution mode identification code, a recording start time code, a recording channel code, and a recording end time code. These settings are made by operating the reservation button group 4. All of the reservation codes are stored in the reservation storage circuit 6, and their contents are displayed on the display means 9.

When the VPS reservation execution mode is started, the 3H pre-comparison circuit 13 compares the real time information issued by the clock circuit 11 and the recording start time code in the reservation code. This 3H pre-comparison circuit 13 emits an output from 3 hours before the recording start time, and the second power supply circuit 1
5 and the tuner 2 to which the output of the antenna 1 is input is energized. The power-energized tuner 2 receives the recording channel code in the reservation code and selects a channel according to the output of the tuning circuit 12 which generates a tuning voltage, and derives a video signal of the reserved channel. This video signal is input to the VPS decoder 11, and the transmitted broadcast code is decoded. This broadcast code is stored in the data memory. This broadcast code and the recording start time code in the reservation code are compared in the reservation coincidence determination circuit 8, and when a coincidence output occurs, the timer control circuit 10 activates the first and second power supply circuits 14 and 15.
The first power supply circuit 14 is activated during the period when the coincidence output is generated, that is, during the period when the desired program is being broadcast, and activates the recording means 16 to execute the recording of the desired program while the user is away. When the program ends, the broadcast code is changed, the coincidence output is deactivated, and the power to the recording means 16 is deactivated.

On the other hand, when the normal reservation execution mode is started, the reservation coincidence determination circuit 8 compares the recording start time code in the reservation code with the actual time information.
The timer control circuit 10 operates the first power supply circuit 14 based on the coincidence output generated by the comparison,
The recording means 1 is powered on. This power activation also powers the tuner 1, and the video signal of the recording channel is supplied to the recording means 16. When recording is started, the reservation coincidence determination circuit 8 compares the recording end code in the reservation code with the real time information. As a result, when a coincidence output occurs, the timer control circuit 10 deactivates the first power supply circuit 14, de-energizes the recording means 16 and the tuner 2, and ends the recording.

In addition, in the VPS reservation execution mode, if the VPS code to be decoded cannot be obtained, that is, if you select a broadcast channel that does not have a VPS code, the reservation execution mode will be switched to Switched to normal reservation execution mode.

The video tape recorder having the above-mentioned configuration enables not only the above-mentioned answering machine recording but also manual recording.

(C) Problems to be Solved by the Invention However, the above-mentioned conventional technology cannot perform recording control using the VPS code in the normal recording mode, and recording cannot be stopped in response to interruptions in programs, etc. I can't.

(d) Means for solving the problem Therefore, the present invention provides a means for solving the problem.
Recording is possible using a simple recording button called a one-touch timer button that records programs according to the code.
The VTR is characterized by being provided with a VPS decoder, code change detection means, and control means.

(e) Effect Therefore, according to the present invention, at the same time as the one-touch timer button is operated or after the one-touch timer button is operated.
The VPS code of the video signal being recorded is stored in conjunction with the operation of the VPS recording button, and recording control is executed according to the VPS code.

(F) Embodiment The present invention will be explained below according to an embodiment shown in FIG.

In this embodiment, the present invention is applied to a VTR that allows recording using a one-touch timer button, and in which recording reservations can be made during an answering session using the VPS reservation execution mode, and the conventional circuit required for the VPS reservation execution mode is The block numbers are the same as in Figure 2.

In this embodiment, the system controller circuit 17 activates the second power supply circuit 15 and energizes the tuner 2 by operating the power switch. The tuner 2 selects a channel specified by the channel selection circuit 12. The selected video signal is also supplied to a television receiver (not shown). The broadcast code multiplexed with the video signal is decoded in the VPS decoder 3.
When a one-touch timer button (not shown) is operated in this state, the one-touch timer switch (SW) is closed, and its output is input to the system controller circuit 17 and data memory 7. The system controller circuit 17 receives this output and operates the second power supply circuit 14 to energize the recording means 10. Therefore, the recording means 10
records the video signal of the selected channel.
On the other hand, the data memory 7 stores a program identification code (corresponding to the recording start code) in the broadcast code at the time of starting recording. The program identification code stored at this point is then compared in the code change detection circuit 18 with the program identification code in the broadcast code to be subsequently decoded, and provides a first stop command signal when the program identification code is changed. . On the other hand, the data identification circuit 19, which inputs and analyzes the control code in the broadcast code, continues to generate the second stop command signal when the control code is a code indicating a program interruption. The system control circuit 17 is
When the first stop signal is input, the first power supply circuit 14 is deactivated and recording is terminated in priority to the recording time corresponding to the operation of the one-touch timer button, and when the second stop signal is input, the first power supply circuit 14 is inactivated. 1. Interrupts the operation of the power supply circuit and interrupts recording. still,
Even during recording interruption, the tuner 2, VPS decoder 3, and data identification circuit 19 are in operation, and recording is resumed when the program interruption is cancelled.

In the embodiment described above, the VPS recording mode is set in synchronization with the closed output of the one-touch timer switch (SW), but after setting the recording mode by the one-touch timer button, the VPS recording mode can be set by operating the VPS recording button.
It goes without saying that it may be configured to set the VPS recording mode.

Further, the present invention has special significance in that the recording time can always be specified by operating the one-touch timer button.
This is because the control code in the broadcast code contains
A VPS release code is also included, and when the VPS release code is transmitted as the program is extended and the mode is switched to normal recording mode, the system controller circuit 17 indicates that the recording time corresponding to the number of operations of the one-touch timer button has elapsed. This is because recording can sometimes be ended.

(G) Effects of the Invention Therefore, according to the present invention, the VPS recording mode can be set even during normal recording by operating the one-touch timer, and the desired program can be reliably recorded, which is highly effective.

[Brief explanation of the drawing]

FIG. 1 shows a circuit block diagram showing one embodiment of the present invention, and FIG. 2 shows a conventional circuit block diagram. 3...VPS decoder, 18...Code change detection means, 17...System control circuit.

Claims (1)

[Claims] 1. In a video tape recorder that starts recording by operating a simple record button and sets the recording time based on the number of times the simple record button is operated, a VPS code that is multiplexed on a video signal to be recorded. a VPS decoder that detects a change in the VPS decoder output, a code change detection means that detects a change in the output of the VPS decoder, and a control means that gives priority to the recording time and ends recording based on the detection output of the code change detection means, respectively. A simple recording setting circuit consisting of: