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. 16, 1999
Filed:
Apr. 30, 1997
Applicant:
Inventor:
Masataka Wakamatsu, Kanagawa, JP;
Assignee:
Sony Corporation, Tokyo, JP;
Primary Examiner:
Int. Cl.
CPC ...
H04L / ;
U.S. Cl.
CPC ...
375332 ; 375344 ; 4551822 ; 4551851 ; 4551922 ; 348731 ; 348735 ;
Abstract
A demodulator and a demodulation method are designed so as to reduce the load of a CPU. A host CPU controls a digital demodulation circuit, an error correction circuit, a transport circuit and an MPEG decoder through a bus. The host CPU outputs a control signal to a format conversion circuit via a CPU interface when it instructs a tuner to perform tuning. The format conversion circuit converts the format of this control signal into a 3-wire format and outputs the converted signal to a frequency divider of the tuner.