JPS584389Y2 - Receiving device in image information communication system - Google Patents

Description

[Detailed description of the invention] In recent years, service systems that transmit text, graphic information, and voice information using telephone lines have been attracting attention.

This system consists of an information center that stores text, graphic information, etc. in memory such as a large-capacity magnetic disk, and processes the information using a computer, and a receiver (information user) who monitors the information from receivers, television receivers, and telephones. It consists of

Next, the general configuration of such a service system will be explained.

In FIG. 1, 1 is a transmitting side, 2 is a telephone exchange, and 3 is a receiving side (user).

On the transmitting side 1, 4 is a telephone, 5 is a disk control circuit for controlling a large-capacity magnetic disk, 6 is a magnetic disk, 7 is a modulation circuit, and 8 is an audio decoding circuit.

On the receiving side 3, 14 is a telephone, 9 is a demodulation circuit, and 10
1 is a single-screen display memory, 11 is a control circuit that controls the display memory 10, 12 is a D-A converter, and 13 is a CRT.
It is.

In the above configuration, the information user on the receiving side uses the telephone 1
Dial the phone number of information center (sending side) 1 with 4,
After confirming the guidance voice from the information center 1, the user then presses the selection button (using the button on the telephone) for the information number he/she wants to know on the receiving side and requests the desired program.

The program request is received by the telephone 4 of the information center 1 from the telephone 14 via the exchange 2, converted into a binary code by the audio decoding circuit 8, and input to the disk control circuit 5.

The disk control circuit 5 outputs program number information from the magnetic disk 6 and inputs it to the modulation circuit 7.

The modulated signal from the modulation circuit 7 is input to the demodulation circuit 9 on the receiving side via the exchange 2.

After the display memory control circuit 11 detects the start signal of the image information, the demodulated signal is written into the display memory 10 at the transmission speed, and the writing ends when the stop signal is detected.

Image signals such as characters and graphics written in the display memory 10 are read out by the display memory control circuit 11 at the speed of a video recorder, converted into video signals by the DA converter 12, and displayed on the CRT 13.

In such an information service system for characters, graphics, etc., it is necessary to pay usage fees for the telephone line and this information service system.

The present invention aims to display such usage charges on the receiving side, and provides a device that displays at least the usage charges on the receiving screen at the same time as the image information in addition to the information transmitted from the center. It is.

FIG. 2 shows a circuit configuration of an embodiment of the present invention.

In the figure, 1 is a transmitting side information center, 2 is a telephone exchange, 9 is a receiving side demodulation circuit, 10 is a single screen display memory, 11
1 is a control circuit for the display memory 10; 12 is a D-A converter;
3 is a CRT, and 14 is a telephone on the receiving side, which is the same as explained in connection with FIG.

19 is a time count circuit, 15 is a time display memory, 16
17 is a charge display memory, and 18 is a changeover switch.

In the above configuration, the user on the receiving side calls the information center, confirms the guidance voice from the information center, and simultaneously presses the program number request button (such as the button on the button telephone 14) and starts the time counting circuit 19. do.

The output signal of the time count circuit 19 is inputted to the time display memory 15 by the display memory control circuit 11.

The output of the time count circuit 19 is simultaneously input to a charge conversion circuit 16 which calculates telephone charges.

The output signal of the charge conversion circuit 16 is transmitted to the display memory control circuit 1.
1 is input to the charge display memory 17.

The output of each display memory 10, 15.17 is connected to the display memory control circuit 11. The signal is outputted by the changeover switch 18 and applied to the CRT 13 via the DA converter 12.

This switching is performed as follows.

FIG. 3 shows an example of displaying these on the CRT 13.

In the figure, 22 indicates a CRT display screen, and 256
It is assumed that it consists of 256 dots.

23 is a display section of the display memory 10 shown in FIG. 2, and 20 is a display section of the time display memory 15, which is composed of NXM dots.

Reference numeral 21 denotes the display section of the charge display memory 17, which is composed of NXL, and the display memory control circuit 11 switches the changeover switch 18 in synchronization with the horizontal and vertical scanning of the television receiver so that when the display section 23 is scanned, the display memory 10 is output, and when the display portion 20 is scanned, the time display memory 15 is output.
When the display portion 21 is scanned, the content of the charge display memory 17 is switched to be output.

In this way, the time and fee are displayed on a portion of the screen.

As described above, according to the present invention, the receiver can obtain the image information of the desired program and at the same time know the usage fee.

Also, if you use a printer to print the output of the charge conversion circuit every time you use one same type story, you can manage the charges you have used so far.

[Brief explanation of the drawing]

FIG. 1 is a diagram showing the overall circuit configuration of a conventional character and graphic information telephone service system, FIG. 2 is a diagram showing the circuit configuration of an embodiment of the present invention, and FIG. 3 is a diagram showing the display surface of a CRT according to the present invention. FIG. 1...Information center, 2...Switching center, 3
...Receiving side, 9...Receiving side demodulation circuit,
10... Screen display memory, 11... Control circuit, 12... D-A converter, 13...
...CRT, 14...Receiving side telephone, 16...
...Fee conversion circuit, 17...Fee display memory, 19...Time count circuit.

Claims (1)

[Scope of utility model registration request] In a communication system in which an information center is called through a telephone line, a desired program is requested by a program number, and image information of the requested characters and figures is displayed on the television screen of the receiver, a program request is made to the receiver. a timekeeping means for measuring the time since the end of the day; a means for converting the output of the timekeeping means into a charge; a memory means for storing the output of the charge conversion means; and text and graphic information sent from an information center and the memory means. What is claimed is: 1. A receiving device for an image information communication system, comprising: means for switching the output of a computer in relation to television scanning, and displaying a charge on a television screen on the receiver side at the same time as text and graphic information.