Broadcom Corporation

Avago Technologies General IP (singapore) Pte. Ltd.

Jeffrey Fisher

Brian Francis Schoner

Rajesh Mamidwar

Alex Pelts

David Erickson

Jong-Hon Theodore Na

Darren Duane Neuman

Marcus Christopher Kellerman

Sathish Kumar Radhakrishnan

Joshua Stults

Kaushik Bhattacharya

Nitin Borle

A video stream demultiplxer receives video streams comprising a selected current content channel and one or more adjacent content channels. Time stamp management is concurrently performed on the adjacent content channels while decoding the selected current content channel. Timing information such as Decoding Time Stamp (DTS) and Presentation Time Stamp (PTS) values, and/or random access points (RAPs) may be determined for pictures stored for the selected current content channel and the adjacent content channels. The determined timing information is utilized to determine a Program Clock Reference (PCR) value for each of the selected current channel and the adjacent channels for channel monitoring. A timebase, derived from a PCR rate that is determined based on the determined PCR value, is determined for decoding the selected current content channel. An adjacent content channel, which is primed during decoding of the selected current content channel, may be directly decoded for display if selected.

Method and system for fast digital channel change utilizing time-stamp management

A video channel change system may include one or more processors and a memory. The one or more processors may receive first packets including first video frames associated with a first video channel and second packets including second video frames associated with a second video channel. The one or more processors may decode the first packets and display the first video frames while buffering, in a buffer, the second packets. The one or more processors may determine that a packet of the second packets includes a random access point without decoding the packet, discard the second packets from the buffer that were received prior to the packet, buffer additional second packets received subsequent to the packet, and decode the second packets stored in the buffer and display the second video frames included therein, in response to a request to change from the first video channel to the second video channel.

Video channel change system

A video stream demultiplexer receives video streams including a selected current content channel and one or more adjacent content channels. Time stamp management may be concurrently performed on the adjacent content channels while decoding the selected current content channel. Timing information such as Decoding Time Stamp, Presentation Time Stamp values, or random access points may be determined for pictures of the selected current content channel and the adjacent content channels. The determined timing information may be utilized to determine a Program Clock Reference value for the selected current channel and the adjacent channels. A timebase, derived from a PCR rate, may be determined for decoding the selected current content channel. An adjacent content channel, which is primed during decoding of the selected current content channel, may be directly decoded for display if selected.

An IP network includes a central entity and at least one customer premises equipment (CPE) device. The central entity generates a program clock reference (PCR) clock and provides audio-visual packets to a CPE based on the PCR clock. The CPE sets a first clock based on the PCR clock for decoding operations. The CPE sets a second clock that is independent from the first clock for audio and video output operations. For example, the CPE can process the audio-visual packets using the second clock.

PCR clock recovery in an IP network

A technique that allows a DTV receiver to perform a channel scan in a manner that is faster and more efficient than conventional channel scanning techniques. In accordance with one embodiment of the present invention, the technique allows a DTV receiver to perform a scan of only those channels that are known to be available within a local terrestrial broadcast region. In accordance with another embodiment of the present invention, the technique allows a DTV receiver that operates in conjunction with an antenna, such as a smart antenna designed to comply with EIA/CEA 909, to use the same antenna configuration parameters for different terrestrial broadcast signals in an instance where such signals are known to originate from the same antenna location.

Channel scan for terrestrial broadcast digital television receiver

Methods of optimizing a plurality of numerically controlled delay lines (NCDLS) in a DDR memory controller are presented herein. In one embodiment, a method may comprise, for example, one or more of the following: acquiring a plurality of statistics, the plurality of statistics defining an operating region for the DDR memory controller; and calculating optimal values for the plurality of NCDLs, the optimal values calculated using the plurality of statistics.

Growing community of inventors

Dublin, CA, United States of America

Jeffrey Fisher