# US 8,782,723 B2 · Method and apparatus for power savings in staggercasting > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 8,782,723 B2 - Document ID: US8782723B2 - Status: Granted - Kind: B2 - Application number: 12/736,631 - Filed: 2008-05-02 - Published: 2011-02-17 - Granted: 2014-07-15 - Earliest claimed: 2008-05-02 - Assignees: Thomson Licensing - Applicants: Kumar Ramaswamy - Inventors: Kumar Ramaswamy - Web page: https://patentgrep.com/patent/US8782723B2 ## CPC - H04N 21/434: Disassembling of a multiplex stream, e.g. demultiplexing audio and video streams, extraction of additional data from a video stream; Remultiplexing of multiplex streams; Extraction or processing of SI; Disassembling of packetised elementary stream {(demultiplexing of data packets for data networks, e.g. RTP/UDP H04L65/00)} - H04N 5/63: Generation or supply of power specially adapted for television receivers - H04N 21/26275: {for distributing content or additional data in a staggered manner, e.g. repeating movies on different channels in a time-staggered manner in a near video on demand system} - H04N 21/440263: {by altering the spatial resolution, e.g. for displaying on a connected PDA} - H04N 21/44209: {Monitoring of downstream path of the transmission network originating from a server, e.g. bandwidth variations of a wireless network (arrangements for maintenance or administration in data switching networks involving bandwidth and capacity management H04L41/0896)} - H04N 21/443: OS processes, e.g. booting an STB, implementing a Java virtual machine in an STB or power management in an STB - H04N 21/4436: {Power management, e.g. shutting down unused components of the receiver (power management in computer systems G06F1/3203; hibernate or awake process in computer systems G06F9/4418)} - H04N: PICTORIAL COMMUNICATION, e.g. TELEVISION ## Abstract A method and apparatus for saving power in a receiver includes a power savings mode selector for enabling a user input power savings mode or an automatic power savings mode based on detected battery life. When in power savings mode, a lower resolution time-advanced stream is selected and processed. The normal stream (generally at a higher resolution) is not decoded thereby requiring less power at the receiver decoder. ## Claims ### Claim 1 An apparatus comprising: a decoder configured to decode both a normal stream, wherein said normal stream comprises an image of a television program content having a first resolution, and a time-advanced stream, wherein said time-advanced stream comprises said image of said television program content having a second resolution and being transmitted time-advanced with respect to said image having said first resolution, said second resolution being lower than said first resolution; a delay buffer configured to delay said time-advanced stream; a multiplexer having first and second inputs, said first input receiving a non-delayed version of said time-advanced stream and said second input coupled to an output of said delay buffer and receiving said delayed version of said time-advanced stream, said multiplexer being configured to forward a selected input towards said decoder; and a power savings mode selector configured to receive an input signal indicating a power saving mode, and in response to said input signal operative to force only said time-advanced stream to be selected for decoding and display while forcing said delay buffer to be bypassed such that said delaying operation for said time-advanced stream is disabled and said non-delayed version of said time-advanced stream is selected by said multiplexer. ### Claim 2 (depends on 1) The apparatus of claim 1, further comprising an upconverter configured to upconvert said lower resolution time-advanced stream in response to said input signal. ### Claim 3 (depends on 1) The apparatus of claim 1, wherein said input signal is provided in response to a user input. ### Claim 4 (depends on 1) The apparatus of claim 1, wherein said apparatus is configured to detect a low battery power condition, and wherein said input signal is provided in response to said detection of said low battery condition. ### Claim 5 A method comprising the steps of: receiving a first stream, wherein said first stream comprises an image of a television program content having a first resolution; receiving a time-advanced stream, wherein said time-advanced stream comprises said image of said television program content having a second resolution, and being transmitted time-advanced with respect to said image having said first resolution, said second resolution being lower than said first resolution; decoding both said first and time-advanced streams in a normal mode of operation and decoding only said time-advance stream in a power saving mode of operation; buffering said time-advanced stream for providing a delayed version of said time-advanced stream; multiplexing a non-delayed version of said time-advanced stream and said delayed version of said time-advanced stream, and forwarding a stelected version of said time-advanced stream for said decoding; and forcing to select only said time-advanced stream for decoding and display in response to an input signal indicating said power saving mode while forcing to bypass said buffering step such that said delaying operation of said time advance stream is disabled and said non-delayed version of said time-advance stream is selected in said multiplexing process. ### Claim 6 (depends on 5) The method of claim 5, wherein said input signal is provided in response to a user input. ### Claim 7 (depends on 5) The method of claim 5, further comprising the step of detecting a low battery condition and providing said input signal in response to said detection of said low battery condition.