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:
Jun. 16, 1992
Filed:
Jun. 25, 1990
David C Wyland, San Jose, CA (US);
Zwie Amitai, Sunnyvale, CA (US);
Advanced Micro Devices, Inc., Sunnyvale, CA (US);
Abstract
A priority encoder for receiving input request signals at a number of input request terminals and for providing an N-bit output binary code word indicating the binary identification number of the highest-priority, currently-active input request terminal. Each output bit of the output binary code word is provided from a respective logic circuit. Whenever any one of a first group of input request terminals, which are identified as having a logical TRUE value in a particular bit position of the N-bit output binary code word, is active, all of a second group of input request terminals, having a logical FALSE value for the particular bit position, are disabled. Sequential operation of the logic circuits for each output bit is obtained by successively delaying enablement of a logic circuit until high-order logic circuits have completed operation.