JPH0348794Y2 - - Google Patents

Description

[Detailed explanation of the invention] (a) Industrial application field This invention provides a timer and a
The present invention relates to an information display device that displays information such as a tape counter on a television receiver. (B) Prior art Some models of magnetic recording/playback machines that record audio signals by FM modulation are equipped with a changeover switch that can switch between recording video and audio signals and recording only audio signals. . However, when only audio signals are recorded, recording tapes have a very long recording time, so there is no way to search for recorded audio signals other than using a tape counter or visual inspection. In particular, by remotely controlling a magnetic recording/playback device using a remote controller,
As a result, when searching for recorded audio signals, there are almost no search methods. Therefore, as shown in Utility Model Application Publication No. 59-36097, ``Screen Display Device for Tape Travel Distance,'' when reproducing video and audio signals recorded on magnetic tape by a magnetic recording/reproducing machine, a changeover switch is provided to display the video and audio signals recorded on the magnetic tape. There is a device that displays the tape running amount on a monitor screen by switching between a signal and a video signal that is converted after encoding the tape running amount of a tape counter corresponding to the running of the magnetic tape. However, the display of the tape running amount on the tape counter can be reset. During playback, the tape counter can be reset at the beginning of winding the magnetic tape onto the take-up reel, and then during playback or while the magnetic tape is running. If you do not do this, the display of the tape running amount on the tape counter and the recording position of the video signal will match and there will be no problem. However, if you reset the tape counter while the magnetic tape is in the middle or running, etc. The display of the tape running distance and the recorded position of the video signal will no longer match, making it difficult to search for the video signal.Also, if you have not reset the start of winding of the magnetic tape take-up reel, check the tape counter while visually checking the tape counter. There were drawbacks such as the inability to confirm the end of winding the magnetic tape onto the take-up reel. (c) Purpose of the invention The present invention is intended to eliminate the above-mentioned drawbacks, and provides a device for recording information for display as a video signal on the recordable portion of the magnetic tape when only audio signals are recorded on the magnetic tape. The purpose is to (d) Structure of the invention The present invention provides a magnetic recording/playback device that records audio signals by FM modulation, including a display information section having display information such as the number of counts by a tape counter, and a display information section containing display information such as the number of counts by a tape counter. It consists of a video signal generator that displays information on a television receiver as a first video signal, and a changeover switch that switches between the first video signal and a second video signal accompanied by the audio signal, and only the audio signal. This is an information display device for a magnetic recording/reproducing machine which switches the first switching switch to the video signal generator side during recording, displays the first video signal on the television receiver, and records the first video signal on a magnetic tape using a magnetic head. (E) Embodiment Details of the present invention will be specifically explained with reference to an illustrated embodiment. The drawing is a block diagram showing the information display device of the magnetic recording/playback device of the present invention, which can also record only audio signals.To explain the drawing numbers and operations, 1a is the TV antenna, 1b is the FM antenna, and 2a is the above-mentioned device. Tuner for TV antenna 1a, 2b is for the above FM
Tuner for antenna 1b, 3, 4, 5, 6a,
6b, a recording video signal processing circuit for recording video signals separated from the tuner 2a, an FM modulator, a recording amplifier, and a pair of rotating magnetic heads; 7;
8, 9, 10a, 10b are the tuners 2a, respectively.
a recording audio signal processing circuit for audio signals separated from or from the tuner 2b, an FM modulator, a recording amplifier and a pair of rotating magnetic heads, 11
12 is a display information section, 12 is a video signal generator that operates during recording, 13 is a television receiver, 13a is a picture tube, 13b is a speaker, 14 is a first changeover switch, 15 is a second changeover switch, and 16 is a magnetic tape. , 17, 18, and 19 are preprocessing circuits for video signals during playback, an FM demodulator, and a playback video signal processing circuit, and 20, 21, and 22 are preprocessing circuits for audio signals during playback, respectively. ,
FM demodulator and reproduced audio signal processing circuit; 23 is a video signal output from the video signal generator 12;
and the reproduced video signal processing circuit 1 during reproduction.
This is an RF converter that converts the video and audio signals outputted from the audio signal processing circuit 9 and the reproduced audio signal processing circuit 22 into high frequency signals. First, when broadcast waves received by the television antenna 1a are recorded on the magnetic tape 16 while being monitored by the television receiver 13 , the first changeover switch 14 is set to a, and the second changeover switch is set to a, manually or by an external control signal. Set 15 to c. The broadcast wave is c
The video signal is input to the television receiver 13 through the second changeover switch 15 set to The audio signal is projected onto speaker 13a and is monitored.
It is output from 3b. On the other hand, the broadcast waves received by the television antenna 1a are input to a tuner 2a on the side of a magnetic recording/reproducing device (not shown), are high-frequency amplified, intermediate frequency amplified, and then detected. After this detection, the broadcast wave is separated into a video signal as a second video signal and an audio signal, and only the audio signal is intermediate frequency amplified again and then subjected to FM detection, from which the video signal and audio signal are output from the tuner 2a. are input to the recorded video signal processing circuit 3 and the recorded audio signal processing circuit 7, respectively. Then, the recorded video signal processing circuit 3 extracts the luminance signal from the video signal, suppresses the synchronization signal part of the luminance signal to a constant DC voltage value, and also ensures the SN ratio in the high range of the luminance signal, that is, performs pre-emphasis. The overshoot of the rise to white or the fall to black of the brightness signal of more than a predetermined value is clipped, and this brightness signal is input to the FM modulator 4 via the second changeover switch 14 set to a. , FM modulated. After FM modulation,
This luminance signal and the low frequency converted color signal are superimposed and amplified by a recording amplifier 5, and a video signal is recorded on a magnetic tape 16 by a pair of rotating magnetic heads 6a and 6b set for recording. At the same time, the recording audio signal processing circuit 7 amplifies the audio signal, performs noise reduction on the high frequency range of the audio signal, and
After being subjected to FM modulation by an FM modulator 8, the audio signal is recorded on a magnetic tape 16 via a recording amplifier 9 by a pair of rotating magnetic heads 10a and 10b set for recording. At this time, the audio signal received by the FM antenna 1b using another audio device is recorded by the audio signal processing circuit 7 via the tuner 2b.
signal is not processed. From this, the broadcast waves received by the television antenna 1a are recorded on the magnetic tape 16 while being monitored by the television receiver 13 . Next, while listening to the audio using other audio equipment,
When recording the audio signal received by the FM antenna 1b on the magnetic tape 16, the first changeover switch 14 is set to b and the second changeover switch 15 is set to d. Here, the video signal received by the television antenna 1a is not recorded on the magnetic tape 16 because the first changeover switch 14 is set to b, and the audio signal received by the television antenna 1a is recorded by the recording audio signal processing circuit. 7 and is not processed. Then, the audio signal received by the FM antenna 1b is processed in the same way as described above by the tuner 2b, the recording audio signal processing circuit 7, the FM modulator 8, and the recording amplifier 9, and then by the pair of rotating magnetic heads 10a and 10b. It is recorded on magnetic tape 16. At the same time, information is input from the display information unit 11 having information for displaying the amount of tape travel etc. by a tape counter (not shown) to the video signal generator 12 and converted into a first video signal. Necessary signal processing such as synchronization signal generation is performed on the video signal of 6a and 6b, the signal is recorded on the magnetic tape 16, and after high frequency conversion is performed via the RF converter 23, the signal is input to the television receiver 13 via the second changeover switch 15 set to d, and converted into a first video signal. The received information is transferred to picture tube 1 .
3a is horizontally scanned and monitored. Next, when reproducing the video and audio signals recorded on the magnetic tape 16, the signals recorded on the magnetic tape 16 may be broadcast waves received by the television antenna 1a, but they may also be broadcast waves received by the FM antenna 1b. The reproduction method is the same regardless of whether it is an audio signal, and first, the second changeover switch 15 is set to d. At this time, a pair of rotating magnetic heads 6a, 6b,
Since 10a and 10b are switched for reproduction, the first changeover switch 14 may be set to either a or b. Then, the pair of rotating magnetic heads 6a and 6b switched for reproduction read out the video signal recorded on the magnetic tape 16, pre-amplify it, and after compensating for dropouts and removing level fluctuations included in the reproduction output. An FM demodulator 18 performs FM demodulation, and a reproduced video signal processing circuit 19 performs de-emphasis, noise reduction, etc. on the FM demodulated video signal. In addition, a pair of rotating magnetic heads 10a and 10b provide
The audio signal recorded on the magnetic tape 16 is read out and amplified, then FM demodulated by an FM demodulator 21, and the FM demodulated audio signal is subjected to noise reduction, amplification, etc. by a reproduced audio signal processing circuit 22. . The signal-processed video and audio signals are input to the RF converter 23 for high frequency conversion,
The video signal is input to the television receiver 13 via the second changeover switch 15 set to
A is projected and monitored, and an audio signal is output from the speaker 13b. Also, during playback, the video signal generator 12 is operated, and the information from the display information unit 11 is horizontally scanned to any part of the picture tube 13a via the RF converter 23 and the second switch 15 for monitoring. You may. (f) Effects of the invention According to the information display device of the magnetic recording/playback machine, when recording only audio signals, information for displaying the recording date and time, the amount of tape travel by the tape counter, etc. on the recordable portion of the magnetic tape is displayed on the video signal. Since it is possible to record by converting the tape into a 3D format, even when remote control is performed using a remote controller, it is possible to check the remaining amount of tape while visually checking the amount of tape travel monitored on the TV receiver. Also, since the recording position of the audio signal and the amount of tape travel match during playback, there is no need to perform operations such as resetting the tape counter, and the audio signal can be read while visually checking the amount of tape travel monitored by the television receiver. The advantages include being able to search for records and immediately checking the recording date and time.

[Brief explanation of the drawing]

The drawing is a block diagram showing an information display device for a magnetic recording/reproducing machine according to the present invention. Explanation of main drawing numbers 6a, 6b...Magnetic head, 1
1... Display information section, 12... Video signal generator,
13... Television receiver, 14... First changeover switch, 16... Magnetic tape.

Claims (1)

[Scope of Claim for Utility Model Registration] A magnetic recording/playback device that records video signals and audio signals by FM modulation, comprising: a display information section having display information such as the amount of tape travel by a tape counter; and the display information. a video signal generator that performs necessary signal processing such as adding a synchronization signal to the information from the section and displays it on a television receiver as a first video signal; a changeover switch for selecting a second video signal, and when only an audio signal is selected as an external input, the changeover switch is switched to the video signal generator side and the first video signal is transmitted to the television. An information display device for a magnetic recording/reproducing machine, characterized in that information is displayed on a picture receiver and recorded on a magnetic tape by a magnetic head.