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:
May. 10, 1988
Filed:
Dec. 16, 1985
Lawrence A Welsch, Naperville, IL (US);
American Telephone and Telegraph Company, AT&T Information Systems, Holmdel, NJ (US);
Abstract
In a multiprocessor system, processors are connected to an interconnecting bus by means of bus interface circuits which comprise an address buffer in addition to data buffers. The interconnecting bus, in addition to a destination address and data also carries an originating address identifying the processor transmitting the data. In the event of a receive buffer overload condition in the receiving bus interface circuit, a negative acknowledge signal is transmitted on the bus and the originating address is queued in the address buffer. When the buffer overflow condition has been relieved, a retransmission request is sent to the first processor identified in the address buffer and its message is received. This procedure will be repeated for each processor identified in the address buffer.