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:
Feb. 21, 2012
Filed:
Jul. 29, 2009
Arun Iyer, Bangalore, IN;
Shibashish Patel, Bangalore, IN;
Animesh Jain, Bangalore, IN;
ATI Technologies ULC, Markham, Ontario, CA;
Abstract
A pulsed latch circuit with conditional shutoff prevents an input node, such as a node receiving data, of the pulsed latch circuit, from latching data based on a delayed input control signal, such as an internal clocking signal, and based on a feedback latch state transition detection signal indicating that a current state of input data is stored in the latch. As such, two control conditions are used to shut down the latch. In one example, a condition generator detects when the latch has captured data correctly and outputs a signal to disable the input node. In addition, a variable delay circuit is used to adjust the width of the allowable input signal to set a worst case shutoff time. If data is latched early, a feedback latch state transition detection signal causes the input node to be disabled. If data is not latched early, the maximum allowable latch time is set by the variable delay circuit.