Abstract: A method and apparatus for controlling tuners in a content distribution system is described. The method and apparatus receive a request from a user device for a program stream over a local network at a receiver device that includes a join request at a network address. The method and apparatus further identify a channel associated with the network address, the channel being one of the channels received by the receiver device from a content service provider. The method and apparatus also determine if the identified channel is already tuned by a tuner in the receiver device. The method and apparatus additionally tune the channel using a tuner not currently being used if it is determined that the identified channel is not already tuned and provide the program stream from the tuned channel at the network address to the user device.

Abstract: A method (700) of providing multimedia content is described including providing (610) a first stream of multimedia content, determining (720) a data rate of the first stream, and providing (750) a second stream of multimedia content based on the data rate. An apparatus (110, 220) for providing multimedia content is described including a content processor (225, 600) operable to determine a data rate of a first stream of multimedia content, and a switch (227) coupled to the content processor and operable to provide the first stream of multimedia content, and provide a second stream of multimedia content in place of the first stream of multimedia content based on the data rate. A computer system (800), computer-readable storage mediums and non-transitory computer-readable program products for providing multimedia content are also described.

Abstract: Content distribution systems, methods and user interfaces are described wherein a modulator dynamically duplicates output of multiple channels, a plurality of receivers are individually tuned to one of the multiple channels, wherein a single transport stream can be sent on the multiple channels to each of the desired receivers and wherein the distribution can occur in multiple modes, and user interfaces which allow a manager of the content distribution system to dynamically change the channels on each receiver so that each of the receivers can be tuned to one of the multiple channels through the user interface.

Abstract: A user interface for a content distribution system is disclosed which allows a manager of an environment of TV sets to view which content is playing on individual TV sets, and to change, track and otherwise adjust the content. The invention advantageously provides these features without interfering with other TV sets' programming when another TV set is being adjusted, changes or tracked by the manager.

Abstract: Content distribution systems, methods and user interfaces are described wherein a modulator dynamically duplicates output of multiple channels, a plurality of receivers are individually tuned to one of the multiple channels, wherein a single transport stream can be sent on the multiple channels to each of the desired receivers and wherein the distribution can occur in multiple modes, and user interfaces which allow a manager of the content distribution system to dynamically change the channels on each receiver so that each of the receivers can be tuned to one of the multiple channels through the user interface.

Abstract: A user interface for a content distribution system is disclosed which allows a manager of an environment of TV sets to view which content is playing on individual TV sets, and to change, track and otherwise adjust the content. The invention advantageously provides these features without interfering with other TV sets' programming when another TV set is being adjusted, changes or tracked by the manager.

Abstract: A content distribution system allows multiple channels to be played on multiple TV sets without the need to separately tune the TV sets using a remote control, which would potentially interfere with the channels being broadcast on nearby TV sets in an environment. A modulator dynamically duplicates the output of channels, thereby allowing multiple TV sets to be statically tuned to a fixed channel. The modulator can then duplicate the output so that a single input MPEG-2 transport stream can be sent out multiple channels and sub-channels to each of the desired TV sets.

Abstract: An apparatus and method for providing an electronic program guide (EPG) to an end user are provided. The includes a audio video streaming device, content scheduler, and program guide generator provide for includes providing a program guide, the program guide containing a start time and end time for the display of a first program, providing the first program for display at the start time, determining if the first program has been paused during the display of the first program, adjusting the end time for the display of the first program if the program has been paused, and providing an updated program guide containing the adjusted end time.

Abstract: The present invention relates to electronic program guides. Program guide state information is stored in a remote control which generates and delivers a pseudo-interactive guide to end users with the system state information (guide information to channel mapping maintained in the remote control device.

Abstract: The video data buffering apparatus and associated methods provide audio and video data buffering in a video processing device. Specifically, the system relates to the use of a circular buffer and linked list FIFO employed in a video processing system, wherein video data packets from multiple video streams are stored in a common buffer to compensate for transport packet jitter. The apparatus and methods enable the system to store multiple QAM video stream packets in a common memory buffer. Linked list FIFOS are generated to identify the packets and their location within the common memory buffer. The linked list information is used to transfer the data between the common memory buffer and a modulator.

Abstract: The present invention relates to electronic program guides. Program guide state information is stored in a remote control which generates and delivers a pseudo-interactive guide to end users with the system state information (guide information to channel mapping maintained in the remote control device.

Abstract: An apparatus and method for providing program guide information to an end user are provided. The apparatus and method maps portions of a grid database based on a set of selected channels, then increments the display periodically by replacing one of the channel elements in the display with a new channel from the selected channels in the database. The apparatus and method provide for acquiring program content information for a plurality of broadcast channels, outputting a first video image representing program content covering a time span for a first portion of the plurality of channels, and outputting a second video image representing the program content covering the time span for a second portion of the plurality of channels after outputting the first image for a time period, the second portion including at least one channel from the plurality of channels not included in the first portion.

Abstract: An apparatus and method for providing an electronic program guide (EPG) to an end user are provided. The includes a audio video streaming device, content scheduler, and program guide generator provide for includes providing a program guide, the program guide containing a start time and end time for the display of a first program, providing the first program for display at the start time, determining if the first program has been paused during the display of the first program, adjusting the end time for the display of the first program if the program has been paused, and providing an updated program guide containing the adjusted end time.

Abstract: A system and a method is disclosed which allows both advertisement and program information to be shown on a channel banner, while user changes channel. In another embodiment, an “advertisement channel” is inserted into an active channel list (e.g., scan list), so that when a user is changing channel, a selected ad will be displayed. In yet another embodiment, a method for tracking and collating advertisement display activity in a video system supporting composite display of image data associated with different multimedia functions and advertisements is disclosed.

Abstract: A system and a method is disclosed which allows both advertisement and program information to be shown on a channel banner, while user changes channel. In another embodiment, an “advertisement channel” is inserted into an active channel list (e.g., scan list), so that when a user is changing channel, a selected ad will be displayed. In yet another embodiment, a method for tracking and collating advertisement display activity in a video system supporting composite display of image data associated with different multimedia functions and advertisements is disclosed.

Abstract: An apparatus and method for providing control signals, comprising a processor coupled to a memory, for generating a signal sequence. The processor encodes the signal sequence into a plurality of symbols using a 5 pulse position modulated (5 PPM) scheme. Advantageously, the last position of each symbol encoded under the 5 PPM scheme is set to a low bit. The symbol sequence represents a signaling protocol having a payload portion and a header portion, wherein the header portion comprises a plurality of fields for defining the payload portion. The payload portion indicates keyboard characters or coordinates for a pointing device.

Abstract: A system of defining, creating and decoding composite virtual channels advantageously supports dynamic channel and event substitution. A method, for use in a decoder for acquiring a program conveyed on more than one broadcast channel, involves generating a program guide display. The program guide display lists programs being broadcast on a plurality of broadcast channels during specified broadcast time segments and also lists a particular program on both a first and a second broadcast channel. The particular program is acquired from the first broadcast channel in response to user selection of either of the first and second broadcast channels. A plurality of prioritized channel maps are used in substituting an alternative program for a first program on a broadcast channel.

Abstract: A method for encrypting content, said method comprising encrypting a first plurality of separate blocks of content to obtain a second plurality of blocks of once-encrypted content, exchangin at elast a portion of the content stored in a first set of blocks of the second plurality of blocks of once-encrypted content with at least a portion of the content stored in a second set of blocks of the second plurality of blocks of once-encrypted content to generate a third plurality of blocks of once-encrypted content, and encrypting the third plurality of blocks of encrypted content to generate a fourth plurality of blocks of twice-encrypted content.

Abstract: A minimal level of interoperability for exchanging audio/video (A/V) content and associated control between common consumer electronic (CE) devices is defined. This interoperability is based on the IEEE 1394 serial bus for the physical and link layers and makes use of AV/C or CAL as the control language. This invention provides for reducing the number of remote controls that the user might need by allowing remote control commands to always be received by a controlling device (e.g., digital television) and then routed to the appropriate peripheral device (e.g. digital VCR) after translation into a universal format.

Abstract: A video decoder provides an interface enabling a User to create, manage and maintain favorite service lists for facilitating User navigation through a complex array of multimedia services. The on-screen display interface system generates an abbreviated menu list of favorite multimedia services available from both local and remote sources to enable navigation through user selected favorite services. A database associates individual services and corresponding menu items in the favorite services menu with their respective sources and supports service selection, tuning and acquisition. Additional abbreviated lists of favorite multimedia services, comprising sub-sets of parent service lists, are also hierarchically displayed in response to User command in order to facilitate and focus a search for a desired service.