Ati Technologies Inc.

Ati International Srl

Broadcom Corporation

Martin E Perrigo

Saeed Abbasi

Carol A Price

Glen Timothy McDonnell

Saeed Abassi

A system and method for storing a multidimensional array of data, such as a two dimensional (2-D) array of video data, in a non-contiguous memory space. The system and method maps individually indexed elements of a multidimensional array of data from a source device into blocks of non-contiguous memory available in a destination memory system, even when the destination blocks are small and/or their size does not correlate in any way to the dimensions of a source buffer. In particular, the blocks of non-contiguous memory may be as small as a single element of the data indexed in the 2-D array.

System and method for transferring a multidimensional array of data to a non-contiguous buffer

A delay locked loop (DLL) circuit having gain control is presented. The DLL circuit includes a bias generator responsive based on an error signal to produce first and second bias voltages to control a plurality of differential delay elements. The bias generator includes a bias current generator having a fixed voltage-controlled current source and a dynamic voltage-controlled current source to generate a bias current, and a bias voltage generator for receiving the bias current and generating first and second bias voltages. The bias generator can generate multiple current levels in different modes of operation. Each of the current levels of the bias generator allows a small range of currents and therefore small values of gain factors (K). Low Kvalues leads to lower jitter and better control over feedback stability, resulting in an increase in the range of operational frequencies.

Gain control circuitry for delay locked loop circuit

A phase locked loop (PLL) circuit adjusts a voltage controlled differential oscillator to generate an output frequency signal that is a selected multiple of an input reference signal. An oscillator control circuit increases and decreases the output frequency signal. A frequency detector detects a phase shift between the reference signal and the PLL output signal and produces an error signal. In response to the error signal, a fast lock circuit detects when the output frequency signal passes the selected multiple of the reference signal.

Current biased phase locked loop

A phase locked loop (PLL) circuit adjusts a voltage controlled differential oscillator to generate an output frequency signal, which is a selected multiple of an input reference signal. The PLL circuit includes an oscillator control circuit for increasing and decreasing the PLL output frequency signal, a frequency detector for detecting a phase shift between the reference signal and the PLL output signal and produces an error signal, and a fast lock circuit for detecting when the output frequency signal passes the selected multiple of the reference signal. This circuit design provides improved jitter performance, tolerates process variation, and extends the PLL operating frequency range.

Self-bias and differential structure based PLL with fast lockup circuit and current range calibration for process variation

A delay lock loop (DLL) circuit for generating a precisely delayed output signal relative to an input signal. The DLL circuit includes a phase detector for detecting a phase difference between the input signal and the DLL output signal, a lock circuit for detecting when the difference between the input signal and the output signal is zero, and a delay element control circuit for increasing and decreasing the phase of the output signal. This circuit design reduces processing delay, improves jitter performance, and extends the DLL operating frequency range.

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Newtown, PA, United States of America

Martin E Perrigo