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:
Feb. 28, 1995
Filed:
Feb. 24, 1993
Applicant:
Inventor:
Hideki Takahara, Tokyo, JP;
Assignee:
Sony Corporation, , JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H04B / ;
U.S. Cl.
CPC ...
359142 ; 359143 ; 359167 ; 359172 ; 359182 ;
Abstract
A modulation/demodulation apparatus includes a modulator for modulating data. When a central processing unit is operating in a first operating mode, a changeover unit selects and outputs modulated data signals provided by the modulator. When the central processing unit is operating in a second operating mode, the changeover unit selects and outputs unmodulated data signals. An IR light emitter outputs IR light corresponding to the data signals selected and output by the changeover unit.