Loading patent…
AssigneesLuma Telecom, Inc., Mitsubishi Denki Kabushiki Kaisha
InventorsHiroshi Ohtsuka, Yutaka Ueno, Lawrence D. Emmons, James S. Mackley
Estimating the term…
A still picture picturephone communication system for transmitting and receiving a still picture over a telephone circuit including a handshaking process wherein prior to still picture transmission, identification code data indicating a function of the picturephone set is transmitted and received, and a decision is made as to whether the still picture is being transmitted or not. A designation code of a desired response waiting time within an identification code data used at the time of handshaking is formed, and the response is delayed by a period of time corresponding to the response waiting time. A still picture data is directly transmitted and received without handshaking. In addition character data including character information and the like can be transmitted and received, and by manipulating the picturephone set of one party the picturephone set of the other party can be made to transmit picture data therefrom. Furthermore, the picture sent from the called party can be transferred to a third party.
A method of operating a still picture picturephone communication system for transmitting and receiving a still picture over a telephone circuit including a handshaking process wherein prior to still picture transmission, identification code data indicating a function of picturephone sets and including a divided number of pixels per one frame of a still picture is sent and received, matching of the function of equipment of a calling party with the function of equipment of a called party is achieved, and decision is made as to whether the still picture is being transmitted or not, comprising
A still picture picturephone and data communication system wherein during a call, picture data obtained by a TV camera is modulated to a picture data signal to transmit the picture data signal to the other party through a telephone circuit, and a picture data signal transmitted from the other party through the telephone circuit is received to demodulate it to picture data and the picture data is displayed on a monitor TV, said system comprising:
A still picture picturephone communication system for transmitting and receiving still pictures comprising:
Dependencies are inferred from the claim text.