JPS6033788A - Magnetic recording and reproducing system - Google Patents

Abstract

PURPOSE:To reproduce simply desired information by recording picture information and an identification signal representing that sound information corresponding to the picture information is information specific to a magnetic card on the magnetic card so as to call the said information in an external storage device. CONSTITUTION:A processor 8 decodes the information specific to the card in a picture memory 9 and a sound memory 10 from a picture identification signal 5 and a sound identification signal 6 reproduced from the magnetic card through a reproducing head 7. Then the picture information from the picture memory 9 is fed to a picture generating circuit 11 and displayed on a television receiver 14 via an RF modulation circuit 13. Further, the sound information from the sound memory 10 is fed to a sound synthesis circuit 12 in matching with the picture signal and the sound information is fed thereto in matching to the picture signal and reproduced from a speaker from the RF modulation circuit. The reproduction of the picture signal and the sound signal is performed correspondingly by the processor 8 in this way, the storage capacity of the card itself is less and the operation is simplified.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a magnetic recording and reproducing method suitable for use in individual education and learning.

Magnetic cards have been known for use in language practice and early childhood education, in which magnetic tape is attached to a part of the card with pictures, letters, etc. printed on it, on which audio related to the printed content is recorded. ing. Learning devices, especially learning devices for infants and children, that can only be played in a predetermined order, such as those that use cassette tapes, or that have a continuous playback time of several tens of minutes, may be harmful to infants and children. It is difficult to maintain interest and it is difficult to achieve the expected learning effects. On the other hand, learning devices using cards can be played repeatedly as many times as long as each card has a playback time of 10 seconds. l1f4
It is also possible to reproduce the content in percentages, which can arouse the user's interest and increase the educational effect.

However, although these cards can reproduce audio as auditory information, the only visual information is what is printed on the card. If it were possible to simultaneously display images related to the audio on an image playback device such as a television,
As a teaching device for infants and children, it can be expected to further enhance learning effects.

Video tape recorders are a means to achieve these goals.
Although there are video disk playback devices, all of these devices are complicated and expensive, and it is difficult for young children to use them easily. In addition, as a learning device using a microprocessor, a program for the microprocessor and an audio signal are recorded on separate tracks from a cassette tape.The processor reads the program part and transmits the image to a television receiver, etc. according to the program. Some devices play back the audio part while displaying it on the playback device, but when using a cassette tape as an external recording medium, the user must always play back from the position where the tape begins to wind. , it is difficult to play back from the middle of the tape or to play back only an arbitrary part repeatedly. Therefore, both image information and audio information are digitized and recorded on a magnetic card, and during playback, the image information and audio information are converted into image and audio signals by dedicated signal generation circuits under the control of a microprocessor.
One possible method is to reproduce the information as visual and auditory information on a television receiver.

For example, a method of digitally encoding image information is to divide one TV screen into 128 x 96 dots vertically and horizontally, and assign a two-digit binary code to each dot to represent four different colors. and so on. According to the above method, a digital signal of 3 bytes is required as image information for one screen.

On the other hand, there are methods for digitally encoding audio signals, but the basic method is PCM (Pu1se CodeMode).
However, this method requires an amount of information of 8 to 8 bytes per second even for voice in the telephone band. Therefore, 80 bytes of data are required to record 10 seconds of audio information, making it difficult to record on a single card. Therefore, various methods have been proposed for compressing and encoding audio information. For example, the formant synthesis method extracts the elements that characterize human speech and synthesizes simulated speech using an electric circuit based on that data, so it records and records information at around 300 bytes per second, which is much smaller than the PCM method. Can be played. However, even if the above-described synthesis method is used, approximately 3 bytes of digital signals are required as audio information to reproduce 10 seconds of audio. Therefore, if both image information and audio information are digitally encoded and recorded as they are, a considerable amount of data will be recorded on the card as a storage medium. Therefore, card playback devices must play back the images and audio signals recorded on the card in a short time and without any reading errors, making the mechanism complicated, difficult for infants and children to operate, and expensive. It becomes a thing.

In order to compensate for the above-mentioned drawbacks, the present invention stores either image information or audio information, or both, in a unit-packed large-capacity storage device inside the device, and the card stores the image information, the audio information, or both in a unit-packed mass storage device inside the device. Recording an identification signal from image information, audio information, or both to indicate that the information is unique to the card, greatly reducing the amount of information to be recorded on the card,
To provide a recording and reproducing system which is simple and inexpensive, and which is easy to operate even for users such as young children.

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

Although a magnetic tape type card is used as the record code, it should be understood that a type having a bar code may also be used. FIG. 1 shows the appearance of a card 1, in which a magnetic tape 4 is adhered with a heat-sensitive adhesive to a part of one side of a thick paper 3 on which pictures, characters 2, etc. are printed.

FIG. 2 shows the recording state of the magnetic tape 4, in which data 5 for identifying one screen's worth of image information and data 6 for identifying 10 seconds worth of audio information related to the image information are self-contained. It is recorded as a digital signal using an FM modulation method that allows clocking. The number of data for the image identification data 5 and the audio identification data B is about 500, which is the number required for one unit of educational cards, which is sufficient, so it is sufficient that they each have at least 9 pits that can identify 512 cards.

FIG. 3 shows an embodiment of a reproducing apparatus for reproducing the card °1. The playback device includes a playback head 7, a processor 8, an image memo I9-9, an audio memory 10, an image generation circuit 11,
It is composed of an audio synthesis circuit 12, an RF modulation circuit 13, etc., and is designed to simultaneously obtain image information of images and audio through a home television receiver 14.

The card 1 is attached to a playback device (not shown) and run by hand. A signal is output when the recorded portion of the magnetic tape 4 passes through the reproducing head 7. Regenerated image identification signal 5
．． 6 is read by the processor 8 as an image unique to that card in the image memory 9, and is stored in a temporary storage device in the processor 8. Next, similarly to the case of images, the reproduced voice identification signal 6 is decoded by the processor 8 into a beat indicating the number f% of the location in the voice memory 10 where the voice information unique to that card is stored. 8 is stored in another temporary storage device. When the address of the image, audio, and image information is decoded, the processor 8 retrieves the address information from the temporary storage device, and based on the address information, reads the image information from the image memory 9 in 11 formats in a predetermined number. is sent to the image generation circuit 11. The image generation circuit 11 converts the image information into a one-frame analog video signal, and the converted signal is modulated to the TV channel frequency by the I('F modulation circuit 13, and then output to the screen of the TV receiver 14. Almost simultaneously, the processor 8 retrieves the address information of the audio signal from the temporary storage device, and based on the address information, the processor 8 sequentially sends a predetermined number of audio information from the audio memory 10 in accordance with the image signal. It is sent to the speech synthesis circuit 12 at the same speed.

The audio synthesis circuit converts the audio information into an analog audio signal, and the converted signal is modulated to the audio carrier frequency of the television by the RF modulation circuit 15 and transmitted to the television receiver 14.
is played from the speakers.

As mentioned above, the reproduction of the image signal and the reproduction of the audio signal are all processed by the processor 8, so if you include a base program that changes all or part of the screen in the image information, you can adjust it according to the change in the screen. You can also play the audio that corresponds to the text, making it more interesting.

In the present invention, the image memory 9 and the audio memory 10 shown in FIG. 6 are combined into a removable non-volatile memory pack 15. As a result, it is possible to provide the user with various teaching materials by combining the non-volatile memory pack 15 and a plurality of cards, and the user inserts the memory pack 15 into the device with a single touch and selects the material of his/her choice. Images and audio can be played back using any card.

Tape 4 is glued on, but plastic card may be used instead of paper, or magnetic tape may be used as needed.
More than one book may be provided. Furthermore, in this embodiment, both image information and audio information are explained using identification signals, but even if only one of them is used as an identification signal and the other is recorded as image or audio information, it is not necessary to record it on the card. Since the amount of information is reduced by half compared to when all of the information is recorded, the effects of the present invention are not impaired.

As described above, when recording image information and audio information related to the image information on a card, the present invention records it as an identification signal indicating that the information is unique to that card, thereby greatly reducing the amount of information to be recorded. Can be compressed into width. Therefore, the playback device does not require a motor drive device and can be operated manually and has a simple structure and is easy to operate, making it suitable as a learning device for use by young children.

[Brief explanation of drawings]

FIG. 2 is a diagram showing the recording state of the magnetic tape according to this embodiment, and FIG. 3 is a diagram showing the circuit system of the reproducing apparatus according to this embodiment. The main parts in the figure are as follows. 1: Card 4: Magnetic tape 5: Screen identification data 6: Audio identification data 7; Playback head 8 Nib 4 setter 9: Image memory 10: Audio memory 11: Image generation circuit 12: Audio synthesis circuit 15: RF modulation circuit 14: TV receiver Figure 1 Figure 2

Claims (3)

[Claims] (1) In a device that uses a processor to play back two groups of image information and a group of audio information corresponding to the image information based on an identification signal recorded on an identification card such as a magnetic card or a barcode card, there may be defects in the playback device. A signal that identifies the image information and/or audio information corresponding to the identification card from among the image information group and/or audio information group stored in the volatile memory causes the processor to search for the information and retrieve the information. A magnetic recording and reproducing method characterized by creating an image signal and/or an audio signal based on information and reproducing the same on an image/audio display device. (2) A magnetic recording and reproducing method described in the apparatus for a non-volatile memory in which a group of image information, a group of audio information, or both are recorded. (3) The magnetic recording and reproducing method according to item 1 or 2, wherein the magnetic card records a reproducible identification signal.