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:
Dec. 31, 1996
Filed:
May. 19, 1995
Brian S Hausauer, Spring, TX (US);
Other;
Abstract
An apparatus is disclosed for smoothly multiplying the frequency of a computer's basic clock during a burst transfer cycle and smoothly resuming the basic clock frequency upon completing the burst transfer cycle. A fixed frequency multiplier is connected to the basic clock to generate a clock whose frequency is a multiple of the basic clock frequency. A decoder which operates synchronously with the fixed frequency multiplier clock responds to control signals of the expansion bus to detect the start and the end of a burst transfer cycle. The decoder also toggles a speed-up signal during the burst transfer cycle on the rising edges of the fixed frequency multiplier clock. The speed-up signal and the basic clock is provided to a variable frequency multiplier which multiplies the frequency of the basic clock when the speed-up signal is toggled and reproduces the frequency of the basic clock when the speed-up signal is deasserted, thus providing a clock signal whose rising edges are aligned with the rising and falling edges of the basic clock and whose frequency is a multiple of the basic clock frequency during the burst transfer cycle.