JPS59198093A - Picture information system - Google Patents

Abstract

PURPOSE:To reduce the operation of a key pad by reproducing a recording medium on which a key data designating picture information is recorded and applying this key data to a control signal transmitter so as to generate a control signal to a receiving terminal device. CONSTITUTION:This picture information system has a receiving terminal device 1, which applies characters and picture information transmitted from a center device to a receiver 4 so as to display them on the receiver 4. A voice signal applied from a mixer 19 is recorded on an L channel and a key data subjected to FSK modulation is recorded on an R channel in a cassette tape deck 16. A remote control signal automatic transmitter 8 generates a remote control signal corresponding to the key data reproduced by the cassette tape deck 16 so as to control the receiving terminal device 1.

Description

[Detailed Description of the Invention] "Industrial Application Field" This invention relates to an image information system (captain system,
This relates to the terminal side equipment of the Videotex System (also known as the Videotex System, etc.).

"Background technology and its problems" Image information systems connect center equipment and user terminals using telephone lines, optical cables, etc.

In response to a request signal from a user terminal, the center device sends image information such as letters and figures to the user terminal, such as news, weather forecasts, encyclopedic information, general life information, etc. This is an information transmission system that displays information from a John receiver.

In conventional image information systems, in order to receive desired image information, a search is first performed using either a direct search method or an indirect search method.

The direct search method is a method of directly calling up image information by specifying a screen number found in an information guidebook or the like. The indirect search method is a method of calling up image information to be searched by sequentially selecting options shown in a certain image. The direct search method has the drawback that it is troublesome to find the screen number using the guidebook, and the indirect search method has the disadvantage that too many key operations are required to obtain the desired image information.

In conventional image information systems, operating a remote control signal generator called a keypad is quite troublesome as described above, and this poses a big problem especially when the users are children as young as two years old or elderly people.

Further, in conventional image information systems, audio information is not transmitted, and the information content is understood only visually. However, when image information is used as a teaching material, it is preferable to be able to convey audio information related to one image information to the user.

Furthermore, when image information providers explain or advertise the contents of image information they have on file to users, as mentioned above, keypad operations are cumbersome and require a lot of manpower. And then again.

There is a risk that effective explanations and promotions may not be possible.

``Object of the Invention'' The object of the invention is to provide an image information system that can receive information from a predetermined 1++ II image information planning center device without requiring the user to operate the keypad at all or little. be. The value of this invention is that users can be freed from the troublesome keypad operations.
This will happen.

Furthermore, the present invention can realize an image information system that can generate audio information related to image information in synchronization with image information received and played back at a user terminal.

Further, the present invention has the same function as the keypad of the current conversational character 2 graphic information system which is reaching the stage of practical use, and can be completely adapted to the current system.

``Summary of the Invention'' This invention reproduces a magnetic tape or other recording medium on which key data for specifying two image information is recorded by a cassette tape recorder or other playback device, and receives a control signal corresponding to the key data from the playback device. This is an image information system that generates a control signal 2 that is supplied to a sending device and is equivalent to a receiving terminal.

Further, in the present invention, an audio signal related to specified image information is recorded on a recording medium together with key data, and this audio signal is played back on the terminal side along with displaying the image information. 0 "Embodiment" An embodiment of the present invention will be described with reference to one drawing. This embodiment allows both recording and reproduction of key data and audio signals.

In FIG. 1 showing the overall configuration of an embodiment of the present invention, 1 indicates a receiving terminal. This receiving terminal 1 is on the verge of being connected to a center device (not shown) via a telephone line 2. A telephone 3 provided in association with the receiving terminal 1 connects the line between the receiving terminal 1 and the center device. Also,
Character 1 graphic information sent from the center device in a dot pattern, for example, is supplied from the receiving terminal 1 to the color television receiver 4 and displayed on its screen. The video signal can be in the form of an RF signal or any number of R, G, B color signals.

The receiving terminal 1 includes a light receiving section 5 for receiving remote control signals using, for example, infrared rays as a medium. 6 indicates 1 a normal keypad, and 8 indicates an automatic remote control signal sending device 2. By manually operating a key on the keypad 6, a remote control signal generated from the light emitting section 7 or a remote control signal generated from the light emitting section 9 of the automatic remote control signal transmitting device 8 is transmitted to the light receiving section 5 of the receiving terminal 1.

The remote control signal automatic sending device 8 has two channel line input terminals 10L and 10R, a one channel line output terminal 11R, and a speaker terminal 12.

It has a keyhat connection terminal 13. When the speaker terminal 12 & is connected to the speaker 14, the audio signal input from the line input terminal 10L is supplied to the speaker 14. The keyband connection terminal 13 has a keyband 15.
is connected. When the key signal generated by the key operation on the keypad 15 is supplied to the remote control borrowing automatic sending device 8, the same remote control signal as when the keypad 6 is operated is generated, and the FSK modulated key data is sent to the line output terminal. It occurred on 11R.

The cassette tape deck indicated by 16 has two channels of line input terminals 17L, 17F and two channels of line output terminals 18L, 18R. This cassette tape deck 16 can be monitored during recording, and recording signals applied to line input terminals 17L and 1γR also appear at line output terminals 13L and 18RG.

One line input terminal 17 of the cassette tape deck 16
R is the line output terminal 11 of the remote control signal automatic sending device 8
■(Connect with 2-inch L, the other line input terminal 17
L is connected to the line output terminal 20L of the mixer indicated by 19.

In one embodiment of the invention, the cassette tape deck 16f
Therefore, the L channel is supplied from the mixer 19 2 'I
In the mixer 19, the FSK-modulated key data from the remote control signal automatic transmitter 8 is recorded.

Microbon 21.22 microphone output, tape deck 2
3, the phono output of the record player 24 is supplied, and the line output terminal 20L of the mixer 19 is configured to be able to generate desired audio signals such as voice and music.

Furthermore, the data recorded on the R channel is FSX modulated serial data in units of 9 bits, and for example, 1200Hz and 2200Hz are selected as frequencies corresponding to H (high level) and L (low level) of the data. I'm walking. Among the 9 bits, the first 1 bit is the start focus, the next 6 bits are the key data corresponding to the key number (1 to 64), the first bit is the parity check focus, and the last 6 bits are the key data corresponding to the key number (1 to 64). One bit is a stop bit. This data transmission speed does not need to be high and also to reduce the occurrence of errors.

At a relatively low speed, for example 300 baud.

When recording a series of key data and audio signals on the L channel and R channel G of a magnetic tape using the cassette tape deck 16, first, the line between the center device and the receiving terminal 1 is connected via the telephone 3. Next, the automatic remote control signal sending device 8 and the cassette tape deck 16 are put into recording operation.

Then, use the keypad 15 according to the pre-planned procedure.
Operate the keys in sequence. At this time, when a certain keystroke is generated, a remote control signal is sent from the light emitting section 9 to the light receiving section 5, so a signal to request predetermined image information f') is sent from the receiving terminal 1 to the center device. , predetermined image information is searchable.

It is sent to the receiving terminal 1 and displayed on the television receiver 4.

While looking at this display screen, an audio signal is inputted from, for example, a microphone 21, supplied to the cassette tape deck 16 via the mixer 19, and recorded on the L channel of the magnetic tape. Also, this recorded audio signal is sent to the speaker 14.
can be monitored by The key data thus generated is recorded on the R channel of the magnetic tape.

It actually receives image information from the center device and displays it.
Since the audio signal is generated while looking at this display screen,
The key data specifying the recorded image information and the audio signal can be synchronized.

In addition, by connecting the line between the -3 center device and the receiving terminal 1, the cassette tape that has already been recorded can be transferred to the cassette tape.
Attached to PUDETSUKI 16 IJ control signal automatic sending device 8
If the cassette tape deck 16 is set to the playback state, one image information can be received and the related audio signal can be played back without having to use several keypads 6. In other words, the line input terminal 10L of the automatic signal transmitter 8 for the key data (FSX modulated) and audio signals reproduced from each channel of the cassette tape deck 1-6.

When the signal is supplied to the key data 10R, a single signal corresponding to the key data is generated and is reproduced by the audio signal input 14. For example, encyclopedic image information can be received from the center device and displayed on the television receiver 4, and an audio commentary can be generated.

Furthermore, manual operation is also possible by operating the keypad 6 and pressing G to specify predetermined image information as in the conventional case.

FIG. 2 shows an example of a specific configuration of the automatic remote control signal sending device 8 described above. 1 e.g. 55 by keypad 15
A key signal in which the KHz carrier is intermittent is generated, and is supplied to the carrier detection circuit 31 of the automatic remote control signal transmitter 8 through the key pad connection terminal 13. This key signal is
It is similar to a remote control signal, and the connection between M and R can be changed depending on the H and L key data. The detection output of the carrier detection circuit 31 is supplied to the remote control signal decoder 32 and converted into 1.16-bit parallel key data.

This key data is supplied to the start-stop synchronization sending unit 33 (start bit, parity check bit).

Three stop bits are added and converted into 9-bit serial data at a transmission rate of 300 baud, which is generated from the asynchronous transmitter 33. Clock generation circuit 34
The clock from the start/stop synchronization transmitter 33 is used for processing such as parallel to serial conversion. The output of the start-stop synchronization sending section 33 is supplied to the Ti'SK modulation circuit 35, and the FSK modulated data is supplied to the level adjustment circuit 36.
and line output terminal 11R via banfa amplifier 37.
G changes direction. Along with this, in order to monitor the recording, the recording side input terminal 3 of the recording/playback switch 40 is connected.
0 line input terminal 1 to which modulated data is supplied to 8
0R is connected to the playback side terminal 41 of the recording/playback selector switch 40.
The playback signal of the channel is sent to A via the banfa amplifier 422.
The GC circuit 43 is full of supplies. A volume 44 for level setting is provided in association with the AGC circuit 43. The output of this A, ()C circuit □ circuit 43 is sent to the FSX demodulation circuit 4.
5.

The output G of the FSX demodulation circuit 45 generates 9-pin serial reproduction key data. This FSX demodulation circuit 45
includes a carrier component (1200Hz or 2200Hz)
A circuit is provided to detect this.

When the carrier component is detected, the detection output which becomes 0, for example, H, is supplied to the level comparator 47 via the integrating circuit 46. This level setting regulator 47 generates a comparison output that rises from L to HG when the output level of the integrating circuit 46 falls below a predetermined value. A light emitting diode 48 is provided that emits light when the carrier is detected.This carrier detection monitors whether the recording or reproduction signal of the R channel, that is, the key data, is normal. This is to prevent incorrect input and 1-1 incorrect remote control signal generation. The integrating circuit 46 prevents the protective circuit from operating due to the instantaneous disappearance of carriers, and the light emitting diode 48 displays a 0 or 0 signal indicating that normal recording operation or regeneration operation is in progress. . If the cassette tape recorder for playback is not equipped with a line output terminal, the playback signal will be extracted from the earphone jack, and in this case, O.

■The level of the J raw signal will be adjusted by the volume adjustment G of the cassette cheap recorder. This level adjustment can be made appropriately while looking at the display of the two light emitting diodes 48.

The comparison output power of the level comparator 47 (F S
, - Also, this comparison output is the key data encoder 51G
This supply is provided. With this 2N, when a carrier is not detected for a predetermined period of time or more, the output of the key data to the subsequent stage is prohibited, and the operation of the key data encoder 51 is prohibited, thereby preventing the generation of incorrect remote control signals. The reproduced data that has passed through the D gate 49 is supplied to the start-stop synchronization receiving section 50. This asynchronous receiving section 50 generates key data converted into 6-bit parallel data using the clock from the clock generating circuit 34, and this key data is supplied to a key data encoder 51 (2n). The asynchronous receiving section 50 is provided with a parity check and a vine circuit, and the parity check is performed using 6-bit key data and 1-bit check bit.
Ru. When an error is detected by this quality check.

A signal is generated that inhibits the operation of the key data encoder 51. The key data encoder 51 is for converting 6-bit key data into a signal type B (8-bit parallel) suitable for the input Q of the remote control signal encoder 52 at the next stage.

The remote control signal encoder 52 forms a drive signal in which a 55 KHz carrier signal is intermittent in correspondence with the key data, and supplies this to the light emitting section (infrared light emitting diode) 9 and the light emitting diode 53 that displays when the remote control signal is being sent. Suru.

Master. Line input terminal 7-1 to which the reproduced audio signal is supplied
An audio amplifier 61 configured as a gain control amplifier is inserted between the OL and the speaker terminal 12. The gain of this audio amplifier 61 can be varied by a gain adjustment volume 62, and the level of the audio signal can be adjusted.

FIG. 3 shows the front panel of the automatic remote control signal sending device 8 described above. In fig.

7 l Kai: "7-y," indicates 1,000, and when the power switch 71 turns the power on and off, the 1
The light emitting diode 72 emits light. Further, reference numeral 73 indicates an operation knob for the gain adjustment volume 62, and the level of the regenerated audio can be adjusted by this operation knob 73. Furthermore,
A light emitting diode 48 for indicating carrier detection and a light emitting diode 53 for indicating that a remote control signal is being sent are provided on the front panel.

- For example, one light emitting diode 48 emits green light and one light emitting diode 53.72 emits red light. Although not shown, terminals 10L, -'IOR, 11R are provided on the back panel of the automatic remote control signal sending device 8.
, 12, 13 and a recording/reproduction changeover switch 40 are provided.

"Application Example" The recording function in the above embodiment may be omitted and only the playback function may be provided. For playback only, mixer 19. Microphone 21°22, Tape number 2
3. The record player 24, the keypad 15, and the recording system circuit of the remote control signal @ automatic sending device 8 can also be omitted. In the present invention, the key data is reproduced and the remote control signal is automatically sent out, but the operation of the key pad 6 may be changed to some extent.

In addition, it is possible to use a playback device other than a cassette tape recorder (such as a magnetic disk or an optical disk. In addition, the key data can be recorded without recording the audio signal in a separate trunk from the key data. The audio signal may be recorded in a predetermined section that is not recorded.

"Effects of the Invention" According to the present invention, it is possible to retrieve desired image information from the center device without performing one troublesome key operation. Furthermore, the present invention requires only the addition of an automatic remote control signal transmitting device and a cassette tape recorder and a speaker held by the user to the terminal side of the conversational text 1 graphic information system that is already being proposed. It also has the advantage of being able to reproduce audio information associated with one image information.

[Brief explanation of the drawing]

FIG. 1 is a block diagram showing the overall connection relationship of an embodiment of the present invention, and FIGS. 2 and 3 are block diagrams showing the configuration of an automatic remote control signal transmitting device in an embodiment Q of the present invention. It is a front view. 1... Receiving terminal, 6.15... Keypad. 8°゛・Par remote control signal automatic sending device, 14...
・Speaker, 16...Cassette tape deck. Agent Tadashi Sugiura Intellectual procedure amendment (method) August 20, 1980 Commissioner of the Japan Patent Office Kazuo Wakasugi 1 Indication of case 1981 Patent Application No. 72526 2 Title of invention Image information system 3 Make amendments Person (4, 22) Representative of Nippon Telegraph and Telephone Public Corporation Tsune Shinfuji (1 other person) 4 representatives

Claims (1)

[Claims] (1) Receiving terminal power) The character specified by the Ranori code. On the terminal side of an image information system that transmits image information such as graphics from a center device to the receiving terminal. A playback device that plays back a recording medium on which key data specifying the image information is recorded, and a playback device that plays back the key data reproduced from this playback device. An image information system comprising: a control Q0 transmission U) device that generates a control signal for the receiving terminal. (2. The reproducing device according to claim 1 is: An image information system characterized by reproducing an audio signal along with key data.