The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jan. 02, 1990
Filed:
Jul. 23, 1984
Kazuyoshi Imazeki, Tokyo, JP;
Yasuo Nagazumi, Tokyo, JP;
General Research of Electronics, Inc., Tokyo, JP;
Abstract
A digital image exchange system comprises a data transmission line, at least one video RAM, at least one video signal generator for accessing data from the video RAM and for developing at least two video signals corresponding respectively to the accessed data, and at least one modulator for modulating the video signals to form transmitted signals in at least two different frequency bands to be transmitted on the data transmission line. At least one demodulator is coupled to the transmission line at a location remote from the modulator for demodulating the transmitted signals in each of the at least two frequency bands to form at least two corresponding video signals; and at least one video display device is operatively coupled with the demodulator for displaying visual images corresponding to the respective video signals.