JPH0326162A - Video communication system for public telephone set - Google Patents

Abstract

PURPOSE:To execute a video communication from a public telephone set by executing a constitution containing a video receiving part to output and display a video signal through a public telephone line on a cathode-ray tube to execute a reception, a video transmitting part to convert the video into an electric signal and transmit it as a video signal through the public telephone line, a charge counting part to execute the charge calculation of the video communication, and a control part to control the video receiving part, video transmitting part and charge counting part. CONSTITUTION:When the video communication is desired after a transmitting sound from a handset is confirmed, a video communication selecting button 7 is pushed down, and a ground signal is given to a control part 6. The control part 6 transmits the ground signal to the charge counting part, adds the video communication charge, simultaneously, applies a power source to a video receiving part 2 and a video transmitting part 4 and initializes the video. When a line is connected to an opposite destination after a dialing by a calling person, a charge counting part 1 starts the counting, and simultaneously, the communication with the voice and the communication with the video can be executed. An image photographed by a video camera 5 is converted into the electric signal and transmitted to the opposite destination by the transmitting part 4, and the video signal sent from the opposite destination is displayed through the receiving part 2 on a cathode-ray tube 3.

Description

[Detailed description of the invention] [Industrial application field] The present invention relates to a video communication system for public telephones.

[Conventional technology]

Traditionally, this type of public telephone has been used for voice calls via a handset. [Problems to be Solved by the Invention] The conventional public telephones described above do not allow video communication because the caller dials and the caller makes a voice call in response to the caller's response. There are drawbacks.

[Means to solve the problem]

The video communication system of the public telephone according to the present invention includes a video receiving section that receives a video signal via a public telephone line and outputs and displays it on a cathode ray tube, and converts the video into an electrical signal and transmits the video signal as a video signal via the public telephone line. The video transmitter includes a video transmission section, a charge counting section that calculates charges for video communication, and a control section that controls the video reception section, the video transmission section, and the charge counting section.

〔Example〕

Next, the present invention will be explained with reference to the drawings.

FIG. 1 is a structural diagram of one embodiment of the present invention. If the caller desires video communication after confirming the dial tone from the receiver through normal telephone operations, he or she presses the video communication selection button 7 to give a signal to the control unit 6. The control section 6 transmits this signal to the fee counting section and adds a video communication fee, and also turns on the power to the video reception section 2 and the video transmission section 4 to initialize the video.

After dialing by the caller, when the line is connected to the other party, the charge counting unit 1 starts counting, and voice and video communication becomes possible. The image captured by the video camera 5 is converted into an electrical signal and transmitted to the other party from the transmitter 4, and the video signal sent from the other party is displayed on the cathode ray tube 3 through the receiver 2. After that, when the communication is completed, everything is canceled by the hook switch and returns to the initial state.

In this way, by providing the video transmitting section, the video receiving section, and the control section, video communication can be performed from any location where a public telephone is available.

〔Effect of the invention〕

As described above, the present invention has the advantage that by providing a video transmitting section, a video receiving section, and a control section, video communication can be performed from any location where a public telephone is available.

[Brief explanation of drawings]

FIG. 1 is a block diagram of an embodiment of the present invention. 1... Video communication charge counting unit, 2... Video receiving unit, 3
. . . Braun tube, 4 . . . Video transmission unit, 5 . . . Video camera, 6 .

Claims (1)

[Claims] A video receiving section that receives video signals via public telephone lines and outputs and displays them on a cathode ray tube, a video transmitting section that converts the video into electrical signals and transmits them as video signals via public telephone lines, and calculates charges for video communications. 1. A video communication system for a public telephone, characterized in that the video communication system includes a charge counting section for controlling the video receiving section, the video transmitting section, and the charge counting section.