JPS6117242A - Magnetic recording and reproducing device provided with receiving device - Google Patents

Abstract

PURPOSE:To record and reproduce exactly and automatically an object part of a broadcast by transmitting a control signal for indicating the start and end of a program by using a sub-voice band of sound multiplex broadcasting in a television braodcast, and starting and ending the recording. CONSTITUTION:Immediately before the next program 16 is started, a program start control signal 15 is transmitted and received, and this signal is amplified, detected and demodulated by a receiving circuit 5, outputted to an output terminal 7 of a control signal and inputted to an input terminal 9 of a control signal of a megnetic recording and reproducing device 10. This signal is applied to a controlling circuit 12, by which a magnetic tape is driven. When an end control signal 17 is transmitted and received as soon as the program 16 is ended, it is operated so that the mechanism 13 is switched to an REC-PAUSE state from an REC-PLAY state. A sub-voice of a sound multiplex broadcast is transmitted and received by a method which is entirely different from a usual voice, therefore, when the control signal of the start or the end of the program is transmitted by utilizing the sub-voice band, no influence is exerted at all on a video signal and a usual voice.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a magnetic recording and reproducing apparatus that can record and reproduce broadcasts more reliably and automatically.

Conventional Structures and Their Problems Magnetic recording and reproducing devices such as tape recorders and VTRs have become widespread in recent years, and their main use is for recording and reproducing broadcasts. In these six steps when recording a broadcast, the broadcast must be carefully set before the start of one program, and recording must be started quickly at the same time as the desired program starts. Also, if the program is not continuously monitored until the end and the recording is stopped quickly at the end of the program, extra programs will be recorded and additional tape will be used. Also, when recording disc jockeys etc. for FM broadcasts, etc., if you want to record only the music and not the commentary etc., carefully monitor the commentary and wait for the commentary to end, then record just before the music starts. The recording must be stopped at the same time as the music starts and ends, but it is very difficult to do this completely, and sometimes some of the commentary is recorded before the music starts, and some of the commentary is recorded after the music ends. Partially recorded events are common occurrences. Furthermore, when a timer or the like is used to record the absence, the conditions become even worse. First, the accuracy of the timer becomes a problem. The start time of recording depends on this accuracy. Also,
Even if the accuracy is good, when the timer is turned on, there is an operating time for the device from when the power is turned on until the start of recording, and the start of recording will be delayed. Furthermore, it is impossible to cut commercials, etc. 1.Furthermore, even if the program ends, it is impossible to stop recording until the timer runs out.

Although recording and reproducing broadcasts is a very common practice, it is difficult to record only the desired part.
This requires extremely difficult work.

OBJECT OF THE INVENTION The present invention solves the above-mentioned conventional problems, and definitely
It is an object of the present invention to provide a magnetic recording and reproducing device equipped with a receiving device that can automatically record and reproduce a target portion of a broadcast.

Structure of the Invention The present invention provides, in addition to audio signals and image signals from a broadcasting station, at the start of a program, at the end of a program, at the start and end of a performance of music, etc. By transmitting a control signal indicating the end of the broadcast, receiving this control signal, and controlling the magnetic recording/reproducing device to start or stop recording audio and image signals, the broadcasting can be performed. It is capable of reliably and automatically recording only the part that it wants to record, and its control signal can be transmitted as an independent signal that does not affect the audio signal or image signal at all. .

DESCRIPTION OF THE EMBODIMENTS FIG. 1 is a block diagram of a magnetic recording and reproducing apparatus equipped with a receiving device according to an embodiment of the present invention. In Figure 1,
1 is the broadcasting station, and 2 is its transmitting antenna. 3 is a receiving antenna. 4. A receiving device such as an FM receiver or a television receiver.

6 is a receiving circuit that performs amplification and detection. 6 is an output terminal for audio signals and image signals, and 7 is an output terminal for control signals. 1
0 is a magnetic recording/reproducing device. 8 is an input terminal for audio signals and image signals, and 9 is an input terminal for control signals. Reference numeral 11 is a recording circuit, and reference numeral 12 is a control circuit for controlling the operation of the magnetic recording/reproducing device. 13 is a mechanism for driving a magnetic tape or the like. The audio signal and image signal output terminal 6 of the receiving device 4 and the audio signal and image signal input terminal 8 of the magnetic recording and reproducing device 10 are connected, and the control signal output terminal 7 of the receiving device 4 is still connected. , are connected to the control signal input terminal 9 of the magnetic recording/reproducing device 10.

The operation of the embodiment configured as above will be described below with reference to FIG. 2.

First, a program is transmitted from the broadcasting station 1 and the transmitting antenna 2 in FIG. 1 as shown in FIG. 2 (&). In FIG. 2 (&), 16 is the program to be recorded, and 14 is the previous program or commercial.

18 is a commercial after the program to be recorded or the next program. 16 is a start control signal for number i'16 to be recorded. 17 is an end control signal for number Mi-16 to be recorded. The time course is plotted from left to right in FIG. Through this process, as shown in FIG. 1, the signal is broadcast from the transmitting antenna 2 and received by the receiving device 4 from the receiving antenna 3.

This signal is amplified and detected by the receiving circuit 5, and an audio signal, an image signal, and a control signal are output. The audio signal and the image signal are separately output to the output terminal 6, and the control signal is output to the output terminal 7. The magnetic recording and reproducing apparatus 1o, which is input to each of the four input terminals 8 and 9 of the magnetic recording and reproducing apparatus 1o, is already powered on and is in the recording (recording) time state, so-called REC-physx state. Program 14 is currently being transmitted and received. Just before this program 14 ends and the next program 16 begins, a program start control signal 16 is transmitted and received. This signal is amplified, detected and demodulated in the receiving circuit 5, outputted to the control signal output terminal 7, and inputted to the control signal input terminal 9 of the magnetic recording/reproducing apparatus 10. This signal is applied to the control circuit 12, which controls the mechanism 3 that drives the magnetic tape.
The REC-PAUSE state is switched to the R11-PLAY state, and the magnetic tape starts running. At this time, audio signals and image signals are already input to the input terminal 8 and the recording circuit 11, reach the recording head of the mechanism 13, and start recording at the same time as the recording head 9 and the magnetic tape is running.

Simultaneously with the end of the program 16, when the end control signal 1γ is transmitted and received as shown in FIG. The output terminal 7 of the control signal 40 is applied to the control circuit 12 via the input terminal 9 of the magnetic recording/reproducing device 10, and this time the mechanism 13 is changed from the REC-PLAY state to the RE signal.
It operates to switch to the C-PAUSE state. As a result, the magnetic tape stops running and recording stops. With the above operation, only the period from when the broadcast station transmits the start control signal to when the end control signal is transmitted is automatically recorded.

FIG. 2(b) shows an example of a program such as a music disc jockey. FIG. 2(b) shows a state in which signals are being transmitted from a broadcasting station. 19 is an explanation etc. before the music performance begins. After that, there is a start control signal 2°, and the performance 21 starts immediately after that. Immediately after the performance 21 ends, there is an end control signal 22, after which the commentary 23 begins. Thereafter, there is a start control signal 24 immediately before the person's music performance 25 begins, and an end control signal 26 is generated at the same time as the performance 25 ends. After that, explanation 27 begins again. When broadcasting is like this, the operation of this embodiment is as follows in Explanation 19.
In the REC-PAUSE state, the start control signal 2o causes the state to become REC-piLAy, the end control signal 22 causes the state to become REO-PAUSE, and the start control signal 24 causes the state to become REC-PLAY again. Then, the operation of going into REC-PAUSE by the end control signal 26 is repeated. As a result, only performances 21 and 25 are recorded, and the parts of commentary 19, 23, and 27 are not recorded at all.

Further, another method of transmitting a control signal will be described below. 2. Description of the Related Art In TV broadcasting, audio multiplex broadcasting is carried out in which separate audio independent from a normal audio signal is broadcast using the retrace time of an image signal. This technology enables bilingual broadcasting and stereo broadcasting of music programs.

This secondary audio is transmitted in a completely different way than normal audio.
Since the sub-audio band is received, it is completely independent from normal audio.If this sub-audio band is used to control the start or end of the program of the present invention, and to transmit signals, image signals and normal The present invention can be implemented without affecting the audio of the user at all.

Effect of the invention According to the present invention, audio signals and image signals are transmitted from broadcasting stations.

In addition to the number, each start,
By transmitting and receiving a control signal indicating the end of recording, and controlling the magnetic recording and reproducing device to start and stop recording audio and image signals, the control signal is always carefully monitored. This allows you to reliably and automatically record only the part of the broadcast that you want to record, without having to quickly operate the equipment at the same time.

Furthermore, even if you are not present, as long as you set the magnetic recording/playback device to the REC-PAUSE state a little before the start of the part you want to record, the desired part will be recorded automatically without any touching. However, it is possible to reduce the amount of magnetic tape to the minimum necessary without using any extra magnetic tape. Furthermore, the control signals that indicate the start and end of the transmission can be completely separated from the simultaneously received audio and image signals, so they have no effect on the recorded audio and image signals. , can be implemented.

[Brief explanation of the drawing]

FIG. 1 shows a receiving device 6 in an embodiment of the present invention.
... Receiving circuit, 11 ... Recording circuit, 12
...control circuit, 13...mechanism.

Claims (1)

[Claims] In addition to image signals and audio signals from television broadcasting stations, control signals indicating the start and end of each program at the start of a program, at the end of a program, or at the start and end of a musical performance, etc., are sent to the television broadcasting station. Start recording of the image signal and audio signal to be transmitted by transmitting using the sub-audio band of the audio multiplex broadcast and receiving the control signal indicating the start,
A magnetic recording and reproducing device comprising a receiving device configured to stop recording of transmitted image signals and audio signals by receiving the control signal indicating the end.