| Patent application number | Description | Published |
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| 20100260266 | FEC ALTERNATIVES TO THE REED-SOLOMON OUTER CODE - Methods, systems, and apparatus, including computer programs encoded on computer storage media for encoding data for transmission on a communication link of a content delivery system includes: receiving data to be communicated to a device, the data received as a multiple data link layer packets of a logical channel carrying broadcast data; encoding the multiple data link layer packets of the logical channel as one outer codeword using an outer code at an outer code rate; encoding symbols of the outer codeword with an inner code; and indicating the outer code and the outer code rate through signaling, including setting a first value for a first field of a control channel and setting a second value for a second field of the control channel, wherein the first value is determined by the outer code, and the second value is determined by the outer code rate. | 10-14-2010 |
| 20110038350 | METHODS AND APPARATUS FOR RF HANDOFF IN A MULTI-FREQUENCY NETWORK - Methods and apparatus for RF handoff in a multi-frequency network include selecting an RF channel from wide and local seamless and partially seamless handoff tables. A method includes generating seamless and partially seamless handoff tables RF channels, and selecting an RF channel for a handoff so that RF channels with common wide content are given higher priority over RF channels with common local content. | 02-17-2011 |
| 20110069657 | SYSTEM AND METHOD FOR THE SIMULTANEOUS TRANSMISSION AND RECEPTION OF FLO AND FLO-EV DATA OVER A MULTI-FREQUENCY NETWORK - A system for receiving data comprising a receiver configured to receive a radio frequency communication signal comprising at least one superframe, the at least one superframe having at least a first data stream encoded therein; and overhead information carried in the superframe, the overhead information comprising a control channel, the control channel having control channel information for separating the at least one first data stream from any other data streams encoded in the at least one superframe, where the at least first data stream and any other data streams may be carried on different radio frequency channels. | 03-24-2011 |
| 20110070820 | SYSTEM AND APPARATUS FOR POWER-EFFICIENTLY DELIVERING PERSONALIZED CONTENTS IN A BROADCAST NETWORK - Embodiments enable mobile devices to efficiently receive mobile broadcast content corresponding to a user's selections based upon content description metadata transmitted in a content description flow portion of broadcast transmissions. A content description flow may be in the form of broadcast data packets which include information about the nature of content elements to be broadcast. Using the information in the content description flow, a mobile device can determine whether a particular portion of content is of interest, as well as when the content will be broadcast and the content flow address on which it can be received. Enabling mobile devices to screen broadcast content flows by monitoring the content description flow for content of interest can extend their battery life since the content description flow can be quickly downloaded and the receiver de-energized if no content is of interest to the user. | 03-24-2011 |
| 20110085499 | SYSTEM AND METHOD FOR THE SIMULTANEOUS TRANSMISSION AND RECEPTION OF FLO AND FIO-EV DATA - A system for transmitting a data stream, includes a transmitter for broadcasting a radio frequency communication signal comprising at least one superframe having at least a first data stream encoded therein, and overhead information carried in the superframe, the overhead information comprising a control channel, the control channel having control channel information for separating the at least one first data stream from any other data streams encoded in the at least one superframe. A system for receiving data includes a receiver configured to receive a radio frequency communication signal comprising at least one superframe having at least a first data stream encoded therein; and overhead information carried in the superframe, the overhead information comprising a control channel, the control channel having control channel information for separating the at least one first data stream from any other data streams encoded in the at least one superframe. | 04-14-2011 |
| 20110122834 | VIRTUAL HOME CHANNEL FOR MOBILE BROADCAST NETWORKS - Methods and systems simplify discovery and handoff for multi-frequency broadcast receiver devices, such as mobile TV devices, by providing a virtual home channel that is not dependent on a single frequency network upper layer. The methods and systems may be used in conjunction with a single frequency network upper layer to support areas without upper layer available, or to off load some portion of the common data bandwidth in the single frequency network. For example, the single frequency network may only carry frequency data for the multiple frequency network or only the frequency data for networks with comprehensive market metadata. | 05-26-2011 |
| Patent application number | Description | Published |
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| 20080268787 | Methods and Apparatus for Service Acquisition in a Broadcast System - Methods and apparatus for service acquisition in a broadcast system. In an aspect, a method includes detecting whether a loss of service has occurred, and initiating acquisition attempts during an aggressive acquisition phase if a loss of service has occurred, wherein a backoff time interval between successive acquisition attempts is constant or increased, and wherein the aggressive acquisition phase ends when service acquisition is achieved or a selected number of acquisition attempts have been performed. An apparatus includes interface logic configured to detect whether a loss of service has occurred, and processing logic configured to initiate acquisition attempts during an aggressive acquisition phase if a loss of service has occurred, wherein a backoff time interval between successive acquisition attempts is constant or increased, and wherein the aggressive acquisition phase ends when service acquisition is achieved or a selected number of acquisition attempts have been performed. | 10-30-2008 |
| 20090197604 | METHODS AND APPARATUS FOR RF HANDOFF IN A MULTI-FREQUENCY NETWORK - Methods and apparatus for RF handoff in a multi-frequency network. A method includes generating a handoff table that comprises RF channels of current and neighboring local operations infrastructures (LOIs) carrying the same content as a current RF channel; detecting a handoff event; disqualifying one or more of the RF channels from the handoff table based on disqualification criteria; selecting a selected RF channel from remaining RF channels in the handoff table that have not been disqualified; and performing a handoff from the current RF channel to the selected RF channel. Another method includes detecting a handoff event; identifying a start of a handoff time interval; determining if RSSI measurements are available at the start of the handoff time interval for RF channels carrying desired content; and performing a handoff to a selected RF channel having a greatest RSSI measurement. | 08-06-2009 |
| 20110165865 | SYSTEM AND APPARATUS FOR POWER-EFFICIENTLY DELIVERING UPDATE INFORMATION TO DEVICES IN A BROADCAST NETWORK - Embodiments provide power-efficient mechanisms for communicating small amounts of information to receiver devices within a mobile broadcast system. A generic transport mechanism enables transmitting data relevant to upper layer protocols in a lower layer sub-channel so multiple information summary flows can share the same physical layer sub-channel Data fields are added to the Overhead Information Service (OIS) channel to provide power-efficient logical channels for carrying the summary information. Data from the power-efficient logical channels are provided to an upper protocol layer that receives the information summary flows. Information summary flow may carry a version number of an information flow in the broadcast signal, codes or other information. Receiver devices periodically monitoring the OIS receive the information summary flows. Employing an embodiment, a receiver device can minimize power consumption because reception of the OIS can indicate whether any new information flows are available, obviating a need to periodically check information flows. | 07-07-2011 |
