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. 31, 1999
Filed:
Nov. 26, 1996
Ashok Kakkunje Adiga, Austin, TX (US);
Janice Marie Girouard, Austin, TX (US);
Wade David Shaw, Austin, TX (US);
International Business Machines Corporation, Armonk, NY (US);
Abstract
In a multimedia data stream system, deterministic response is provided by multimedia servers for VCR client commands, thereby ensuring the commands execute within a predetermined deterministic window of a base response time +/- a jitter j. A command is timestamped and blocked until within the determinstic response window, and then released from a queue. An I/O then issues to a decoder card in a time period less than 2j. Threads processing these commands run at elevated priority. Non-deterministic commands default to the high priority but priority of a thread receiving such a command is lowered before processing. The response time jitter is bound by high priority commands by issuing only non-blocking I/Os and limiting the number of concurrent SCSI bus commands.