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:
Aug. 27, 1985
Filed:
Sep. 30, 1982
Thomas A Peterson, Naperville, IL (US);
AT&T Bell Laboratories, Murray Hill, NJ (US);
Abstract
A peripheral unit controller loads a microprocessor program received from a host processor into a random access memory of a microprocessor-controlled peripheral unit. The program-controlled microprocessor included in the peripheral unit controls the transfer of data between the host processor and the memory and between the memory and a communication channel data link. The peripheral unit controller includes input and output buffer registers, a direct memory access controller, and a host access buffer. Connected between data and address buses of the peripheral unit, the host access buffer transfers controller addresses received from the host processor on the data bus to the address bus to load a program memory address and program word count into the registers of the direct memory access controller. In response to orders received from the host processor, the direct memory access controller uses the program memory address and word count to address locations in the random access memory in which the microprocessor program is loaded.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile