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:
Jan. 13, 1998
Filed:
May. 31, 1995
Chi-Shing J Ng, San Jose, CA (US);
Magnus Karlsson, Milpitas, CA (US);
Apple Computer, Inc., Cupertino, CA (US);
Abstract
A programmable interrupt delay in a communication circuit enables accurate timing of an interrupt delay without tying up processor CPU cycles in the execution of a delay loop. The interrupt delay comprises a memory containing the program delay value. A communication circuit which generates an interrupt output corresponding to the transmission of a communication data stream is coupled to a timing circuit having a time value. This timing circuit also has a timing start input, which triggers timing of the timing value upon receipt of the interrupt output. A comparator coupled to the memory and to the timing circuit compares the time value to the delay value and generates a delayed interrupt when the time value and the delay value are equal.