JPS6115487B2 - - Google Patents

Description

Detailed Description of the Invention The present invention records audio signals, image signals, and signals related to controlling the display of image signals (programs for controlling a microcomputer) on an ordinary audio magnetic tape, and reproduces them. Audio to be played/
The present invention relates to an image signal recording and reproducing device.

Traditionally, video tape recorders and video disk devices have been used as image signal recording devices, but these record image signals as analog signals on magnetic tapes or disks, making it possible to record detailed images as moving images in real time. It is unique in that it can be played back using a television display, and is used for recording image signals from television broadcasts and television cameras.

The present invention differs from the above-mentioned video tape recorder and video disc device in that the recording medium and recording/playback device are conventional audio magnetic tapes, stereo audio tape recorders using a fixed head, or the same type or similar recording/playback device. We aim to provide a device that digitally processes the image signal and records it on one channel track of a stereo magnetic tape, and records and reproduces the audio signal as an analog signal on the other channel track of the magnetic tape. It is something. Note that signals for controlling the recording and display of image signals and for processing and controlling other functions (programs for controlling the microcomputer) are also recorded on the track of one channel for recording image signals. In addition, since images are processed using a stereo audio tape recorder with a fixed head or a recording/reproducing device of the same type or similar, the amount of information that can be processed per unit time is limited. Although it is mainly used in drawings and animation, it has an extremely wide range of uses in fields such as information, education, and entertainment. The present invention will be explained in detail below with reference to the drawings.

FIG. 1 shows a schematic configuration diagram showing one embodiment of the present invention. In the figure, 1 is an image signal input section constructed from a television camera or the like, 2 is a control/processing section mainly composed of a microcomputer, and 3 is an operation/control signal input section, 4 is an image memory section, 5 is a modulator, 6 is an audio signal input section from a microphone or other audio device, and 7 is a stereo audio tape recorder using a fixed head or the like. or a recording/reproducing device using a similar device; 8 and 9 are input terminals of the recording/reproducing device 7;
10 and 11 are output terminals of the recording/reproducing device 7. 1
2 is a demodulator, 13 is an audio signal output section including an amplifier and a speaker, and 14 is a display section using a television receiver.

FIG. 2 shows an example of the recording format of a signal on a magnetic tape in the recording/reproducing apparatus of the present invention.
5 and 16 indicate stereo two-channel tracks, where 15 is the right channel and 16 is the left channel. 17, 18, 19
indicates the type of recorded signal, 17 indicates program data for control, 18 indicates image data, and 19 indicates a portion in which audio signals are recorded.

Assuming that the program data shown at 17 in FIG. A serial signal of data is reproduced and retrieved in a modulated state.

This signal is then demodulated by a demodulator 12 and converted into program data as a digital signal. Program data from the demodulator 12 is supplied to a control/processing unit 2 centered on a microcomputer, and this control/processing unit 2 stores the program.
It consists of a RAM (random access memory), a controller that performs various controls and processes, etc., and program data is first stored in the RAM that stores the program. Then, by sequentially executing the programs stored in this RAM, all subsequent operations are executed by controlling each section by the control/processing section 2 centered on the microcomputer.

Next, an image signal is inputted from the image signal input section 1 or the operation/control input section 3 shown in FIG. and displayed on the display unit 14. The image signal input unit 1 is configured using a television camera and an analog-to-digital converter when inputting image information such as still images, animations, and figures; Configure using a figure generator.

The operation/control input unit 3 is composed of a keyboard, a tablet, a light pen, etc. In the case of light pen input, by operating the light pen on the tube surface of the display section 14, the trajectory is stored as data in the image memory section 4 and displayed on the display section 14. The image memory unit 4 outputs the output of the image memory 4 as a digital signal when the image is a text or simple figure or has no gradation, and it is used as a digital-to-analog converter when the image requires multiple gradations. The configuration includes
The encoded signal is converted into an analog signal and supplied to the display section 14. The display section 14 uses the display section (video section) of a television receiver.

In addition, by separating the image signal into red, blue, and green color signals and supplying them to the input terminals of the primary color drive circuit for the red, blue, and green signals of a color television receiver, the color image can be displayed in color. is obtained.

The image data stored in the image memory section 4 and displayed by the display section 14 is read out from the image memory section 4 under program control of the control/processing section 2.
The signal is transferred to the modulator 5 as a serial signal in synchronization with the recording speed of the recording/reproducing device 7 (a speed of about 1200 to 9600 BPS). This serial signal that has been transferred is sent to the modulator 5.
The signal is modulated by a modulation method such as phase modulation, frequency modulation, or amplitude modulation using a carrier wave signal of several 100 to several 1000 Hz, and this modulated signal is supplied to the input terminal 8 of the recording/reproducing device 7.

When a stereo audio tape recorder with a fixed head, which is widely used today, is used as the recording/playback device 7, the input terminals 8 and 9 are two recording input terminals for stereo recording. is used as the left channel input terminal.

The input terminal 8 of this recording/reproducing device 7 is supplied with the output signal from the modulator 5 as described above, but the input terminal 9 is supplied with the same means used for conventional audio recording, that is, a microphone or Audio signal input unit 6 that inputs audio signals from other audio devices
provides audio signals from the

With the above configuration, the input terminal 8 of the recording/reproducing device 7
When an image signal is supplied to the input terminal 9 and an audio signal is supplied to the input terminal 9, and stereo recording is performed on a magnetic tape by the recording/reproducing device 7, the image signal is transmitted to the right channel track and the left channel track is Audio signals are recorded on the channel track.

The timing of recording the image signal and the audio signal can be arbitrarily set depending on the type of display when they are played back. For example, while displaying a musical poem, The timing can be set to record part of the accompaniment music as an audio signal, and when a still image or the like is displayed, a narration explaining the image can be recorded at the same time.

As mentioned above, recorded magnetic tape can be played back and displayed. Recording/reproducing device 7
When the image data (18 in FIG. 2) on the magnetic tape is reproduced, a modulated serial signal of the image signal is reproduced and taken out at the reproduction output terminal 10.
This signal is then demodulated by a demodulator 12 and converted into a digital image signal. The image signal from the demodulator 12 is sent to the image memory section 4 by the program of the control/processing section 2 centered on the microcomputer.
The data is transferred to and stored, and displayed on the display unit 14.

On the other hand, an audio signal is reproduced and taken out from the reproduction output terminal 11 of the recording/reproducing device 7. This audio signal is supplied to an audio signal output section 13 including an amplifier and a speaker, and outputs audio. It goes without saying that the audio signal output section 13 can use the audio amplification circuit and speaker of the television receiver used in the display section 14.

As described in detail above, the present invention provides program data and image signals for recording audio signals on one channel track on a conventional audio magnetic tape using a conventional stereo audio tape recorder or a recording/reproducing device of the same type or similar thereto. This device records the music on the other channel track, plays it back, displays it on the television screen, and produces sound.

Although either a cassette type tape recorder or an open tape recorder can be used as the recording/reproducing device used in the present invention, it is more advantageous to use the cassette type because it is small and easy to operate. In this case, although the tape speed is low at 4.75 cm/sec, there is no problem with the apparatus of the present invention.

Further, the image memory section 4 in FIG. 1 may be constructed of a semiconductor memory or a magnetic bubble memory as a memory element.

The present invention takes advantage of the ability to interact with displayed images, modify displayed images, and perform various other controls and operations, and can be used for a variety of purposes, such as displaying information with audio commentary for learning, language practice, cooking, childcare, etc. Yes, and it is also possible to display various colors.

Also, use a light pen or keyboard to draw colored letters and simple shapes on the television screen.
This can be recorded and saved on magnetic tape on the spot, and can be played back and displayed on the television screen, so it can also be used as a TV doodle or memo pad.

[Brief explanation of the drawing]

FIG. 1 is a schematic configuration diagram of an embodiment of the present invention, and FIG.
The figure is a diagram showing an example of the recording format of signals on a magnetic tape in the embodiment of the present invention. 1... Image signal input section, 2... Control/processing section, 3...
Operation/control input section, 4... Image memory section, 5... Modulator, 6... Audio signal input section, 7... Recording/reproducing device, 12
... Demodulator, 13... Audio signal output section, 14... Display section, 17... Program data recording section, 18... Image data recording section, 19... Audio signal recording section.

Claims (1)

[Scope of Claims] 1. An image signal input section comprising at least one of means for converting an analog image signal from a television camera into a digital image signal and means for generating a digital image signal of characters and figures, and a keyboard. An operation/control input unit that allows input by interacting with a display unit that includes at least one of a tablet and a light pen, an image memory that stores digital images, and a microcontroller that controls various operations. A control/processing unit mainly composed of a computer, a modulator that performs modulation processing of phase modulation, frequency modulation, or amplitude modulation at a frequency in the audio signal frequency band, a demodulator that demodulates the signal, and a demodulator that demodulates the signal. Audio signals are recorded in stereo format using an audio input section, an audio signal output section including an amplifier and speakers, a display section that displays image signals, and an ordinary magnetic tape that allows audio signals to be recorded. It is equipped with a recording and reproducing device capable of recording and playing back with a fixed head, and an audio signal is sent to one stereo channel track of the magnetic tape, a digitized image signal is sent to the other channel track, and a digital image signal is sent to the other channel track, and a digital image signal is sent to the other channel track of the magnetic tape. An audio/image signal recording/reproducing device characterized by recording and reproducing a related control signal by modulating it with a frequency in an audio signal frequency band. 2. In the statement of claim 1, an image signal input from either the image signal input section or the operation/control input section and an audio signal input from the audio input section are provided in real time. An audio/image signal recording/reproducing device, characterized in that the audio/image signal recording/reproducing device is configured to perform recording/reproducing processing using the recording/reproducing device.