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:
Jul. 23, 1991
Filed:
Apr. 18, 1989
Yoshiki Iwasaki, Yokohama, JP;
Victor Company of Japan, Ltd., Yokohama, JP;
Abstract
A radio communication system such as a radio paging system or the like, for data transmission and reception, which is comprised of a transmission device and a reception device. The transmission device comprises a modulation circuit, a radio signal transmitter for transmitting message signals, through air, after converting them into radio signals, and an optical signal radiator for radiating the message signals, through air, after converting them into optical signals. The reception device is capable of receiving both the radio and optical signals, combining these signals in order to reproduce the message signals, and demodulating the message signals from the combined signals.