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:
Nov. 02, 1993
Filed:
Sep. 23, 1988
Applicant:
Inventors:
Yasuyuki Kojima, Hitachi, JP;
Yasushi Yokosuka, Hitachi, JP;
Takeshi Shimanuki, Hadano, JP;
Kazuhiko Takaoka, Yokohama, JP;
Yukihito Ishihara, Oume, JP;
Assignee:
Hitachi, Ltd., Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H04B / ;
U.S. Cl.
CPC ...
375-8 ; 375121 ;
Abstract
In a MODEM having modulation and demodulation circuits and a circuit for controlling the modulation and demodulation, a modulator-demodulator apparatus includes a register for accepting a macro-instruction from an external source; a circuit for interpreting and executing the macro-instruction; and a circuit for outputting a response to the macro-instruction, whereby the MODEM is controlled in response to the macro-instruction accepted from the outside source. The modulator-demodulator apparatus is suitably integrated over a single semiconductor substrate.