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:
Mar. 27, 1990
Filed:
Sep. 14, 1989
Sau-Ching Wong, Hillsborough, CA (US);
Hock-Chuen So, Milpitas, CA (US);
Stanley J Kopec, Jr, San Jose, CA (US);
Robert F Hartmann, San Jose, CA (US);
Altera Corporation, Santa Clara, CA (US);
Abstract
A programmable logic device having a relatively small number of programmable product terms ('P-terms') feeding each fixed combinatorial logic device, and additional 'expander' programmable P-terms which do not directly feed a fixed device. Relatively simple logic functions can be performed by suitably programming the P-terms feeding the fixed devices. More complex logic functions can be performed by suitably programming the required number of expander P-terms, and then combining the outputs of those P-terms by means of another P-term. In addition, a programmable interconnect array is provided to allow certain inputs to the device to be applied to any programmable portion of the device, and also to allow the outputs of at least one of the fixed devices to be also applied to any programmable portion of the device.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile