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:
Apr. 24, 1990
Filed:
Dec. 01, 1987
Kurenai Murakami, Tokyo, JP;
NEC Corporation, , JP;
Abstract
A stuff synchronization circuit includes a memory, a phase comparison D flip-flop, a stuff judgment flip-flop, and a control section including selectors and an encoder. In the memory, writing and reading are performed at different timings. The phase comparison D flip-flop detects a phase difference between a write timing for a specific bit included in data input to the memory and a read timing for the specific bit. The stuff judgment D flip-flop judges an insertion timing of stuff pulses on the basis of the detected phase difference. The control section keeps a time interval between a time at which the phase difference is detected by the phase comparison D flip-flop and a time at which the insertion timing of stuff pulses is judged by the stuff judgment D flip-flop constant.