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:
Sep. 13, 1988
Filed:
May. 12, 1987
Takeshi Okazaki, Kawasaki, JP;
Toshitaka Tsuda, Yokohama, JP;
Shin-ichi Maki, Yokohama, JP;
Kiichi Matsuda, Kawasaki, JP;
Hirohisa Gambe, Kawasaki, JP;
Hirokazu Fukui, Yokohama, JP;
Toshi Ikezawa, Yokohama, JP;
Fujitsu Limited, Kawasaki, JP;
Abstract
A differential coding circuit including a subtracter, a quantizer for quantizing a differential signal from the subtracter, and a predicted signal generating circuit for generating a predicted signal on the basis of a quantized differential signal from the quantizer. The subtracter subtracts the quantized differential signal of the quantizer and the predicted signal from the sampled input signal. The critical path of the circuit is shortened, therefore the operation speed of the differential coding circuit increases.