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. 17, 1992
Filed:
Dec. 14, 1990
Yasuhiro Shin, Tokyo, JP;
Teruyuki Fujii, Tokyo, JP;
OKI Electric Industry Co., Ltd., Tokyo, JP;
Abstract
A cascaded driver circuit has two or more stages connected to a common serial data signal line and a common clock pulse signal line. Each stage has a counter circuit for dividing the frequency of the clock pulse signal and an enable latch circuit for latching an enable signal, received from the preceding stage, in response to the divided clock pulses. A data latching circuit in each stage latches serial data in response to the clock pulse signal, starting when the enable signal is latched and stopping when a first number of bits of serial data have been latched. An enable output circuit in each stage sends an enable signal to the next stage when the data latching circuit has latched a second number of bits, the second number being at least two less than the first number.