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. 30, 1986
Filed:
Oct. 01, 1984
Applicant:
Inventors:
Gabriel M Li, San Francisco, CA (US);
Charles P Carinalli, Sunnyvale, CA (US);
Ramanatha V Balakrishnan, San Jose, CA (US);
Assignee:
National Semiconductor Corporation, Santa Clara, CA (US);
Attorneys:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H04B / ; H03K / ;
U.S. Cl.
CPC ...
375 36 ; 370 85 ; 328 57 ;
Abstract
An improved driver for differentially driving a differentially conducting cable (e.g., for Ethernet) minimizes the output offset signal coupled to the cable when the driver is idle. When driven to an idle state, the driver provides a shaped output which transitions to a quiescent output level in a manner which eliminates output signal common mode step change and consequently reduces signal distortion on the cable due to reflection of the step change.