Abstract: A method of processing media data received at a receiver over a bitstream having a standardized format that supports descriptors includes receiving at the receiver an extension descriptor that specifies a descriptor tag having a value within a prescribed tag value range, a descriptor length having a value within a prescribed length value range, at least one extension descriptor tag value that identifies a descriptor, and extension descriptor data associated with the identified descriptor. Responsive to the extension descriptor tag value, the identified descriptor and the extension descriptor data associated with the identified descriptor are employed to process the media data at the receiver.

Abstract: A method of decoding an enhanced video stream composed of base layer video access units and enhancement layer video access units, each access unit comprising a plurality of syntax structures, includes passing the syntax structures of the base layer access units to a base layer buffer, passing syntax structures of the enhancement layer access units to an enhancement layer buffer, outputting the syntax structures passed to the base layer buffer in a predetermined sequence, outputting the syntax structures passed to the enhancement layer buffer in a predetermined sequence, and recombining the sequences of syntax structures output by the base layer buffer and the enhancement layer buffer respectively to form a complete enhanced access unit, composed of base layer syntax structures and enhancement layer syntax structures in a predetermined sequence.

Abstract: A method, protocol and apparatus for transporting Advanced Video Coding (AVC) content, e.g., using MPEG-2 systems is disclosed. Specifically, the present method is related to the carriage of various flavors of AVC streams in a uniform fashion over MPEG-2 systems (e.g., both transport and program streams). The method includes generating the AVC content from an input stream, and thereafter transporting the AVC content in a transport stream or a program stream over MPEG-2. The AVC content is generated in accordance with at least one constraint that is associated with the transport stream or the program stream.

Abstract: A method of facilitating transport of partially encrypted video is disclosed. The method re-packetizes or otherwise de-concatenates packets carrying the partially encrypted video into packets where all the video in each packet is either encrypted or unencrypted. The re-packetized video packets may include data that identifies whether the packet is carrying encrypted or unencrypted video.

Abstract: A system configured to decode video data in a packetized elementary stream (PES) including frames of image data. The system includes a processor configured to receive a transport stream including control information associated with the image data including video metadata parameters associated with application specific functions applicable to the image data. The processor is also configured to receive the PES including the frames of image data in video access units. The processor is configured to retrieve and decode the retrieved video access units using the control information to form a signal including the frames of image data. The system also includes a storage device configured to store the frames of image data and the control information.

Abstract: A three-dimensional (3D) video encoder includes a first encoder, a second encoder, and a multiplexer. The first encoder is configured to encode a base view to form a first independently compressed video stream associated with video content. The second encoder is configured to encode a nonbase view to form a second independently compressed video stream associated with the video content. The multiplexer is configured to multiplex the first and second independently compressed video streams associated with the video content to form a transport stream. The transport stream is operable to be processed to render a 3D video using the base and nonbase views.

Abstract: A method of decoding an enhanced video stream composed of base layer video access units and enhancement layer video access units, each access unit comprising a plurality of syntax structures, includes passing the syntax structures of the base layer access units to a base layer buffer, passing syntax structures of the enhancement layer access units to an enhancement layer buffer, outputting the syntax structures passed to the base layer buffer in a predetermined sequence, outputting the syntax structures passed to the enhancement layer buffer in a predetermined sequence, and recombining the sequences of syntax structures output by the base layer buffer and the enhancement layer buffer respectively to form a complete enhanced access unit, composed of base layer syntax structures and enhancement layer syntax structures in a predetermined sequence.

Abstract: A sequence of picture slices is encoded as reference slices and non-reference slices, wherein the reference slices include B slices, by forming, for each B slice, at least one data packet containing data values derived from brightness and color information pertaining to the slice. The data packet for each B slice includes a header element indicating whether the B slice is a reference slice. The header element of each reference B slice has a value that depends on depth of the reference B slice in a hierarchy of discardability.

Abstract: A method and system for digital closed caption transport are provided. In one example, the method involves receiving closed caption data and a program feed having video content, embedding the closed caption data into a standard video syntax, and encoding the video content into the standard video syntax as a background, wherein the closed caption data and the video content are encoded into a closed caption program feed.

Abstract: Progressive I-slice refreshed MPEG data streams are transcoded to I-frame based MPEG data streams to enable trick play modes on a television appliance, such as pause, scan forward, scan backward, jump, or still frame displays for use, e.g., in film indexing (chapters). A progressive I-slice refreshed MPEG data stream 10 having I-slices distributed over multiple P-frames is received by a television appliance 300. The P-frames are decoded at decoder 220 to recover the I-slices which make up a complete I-frame. The recovered I-slices are assembled (e.g., by processor 230) into a complete I-frame. The complete I-frame is encoded at an encoder 250. A selected P-frame in the MPEG data stream is replaced with the encoded I-frame (e.g., via multiplexer 255) to provide an encoded I-frame based data stream 200. The I-frame based data stream is stored (e.g., in memory 240) for trick play mode use.

Abstract: A novel method and apparatus for determining timing information from a stream carrying Advanced Video Coding (AVC) content is disclosed. For example, a method and apparatus for determining timing information from an MPEG-2 stream carrying Advanced Video Coding (AVC) content is disclosed.

Abstract: A method, protocol and apparatus for transporting Advanced Video Coding (AVC) content, e.g., using MPEG-2 systems is disclosed. Specifically, the present method is related to the carriage of various flavors of AVC streams in a uniform fashion over MPEG-2 systems (e.g., both transport and program streams). AVC coding mandates only the VCL (video coding layer) elements and all other elements such as parameter sets, timing data and display parameters are optional in the in-band AVC stream. As all of these elements are required by MPEG-2 systems and for conformance verification of AVC streams, the present invention discloses MPEG-2 system specific tools and/or constraints to generate the optional elements that are not present in the in-band AVC stream.

Abstract: Progressive I-slice refreshed MPEG data streams are transcoded to I-frame based MPEG data streams to enable trick play modes on a television appliance, such as pause, scan forward, scan backward, jump, or still frame displays for use, e.g., in film indexing (chapters). A progressive I-slice refreshed MPEG data stream 10 having I-slices distributed over multiple P-frames is received by a television appliance 300. The P-frames are decoded at decoder 22 to recover the I-slices which make up a complete I-frame. The recovered I-slices are assembled (e.g., by processor 230) into a complete I-frame. The complete I-frame is encoded at an encoder 250. A selected P-frame in the MPEG data stream is replaced with the encoded I-frame (e.g., via multiplexer 255) to provide an encoded I-frame based data stream 200. The I-frame based data stream is stored (e.g., in memory 240) for trick play mode use.

Abstract: Temporal and spatial scaling of video images including video object planes (VOPs) in an input digital video sequence is provided. Coding efficiency is improved by adaptively compressing scaled field mode video. Upsampled VOPs in the enhancement layer are reordered to provide a greater correlation with the input video sequence based on a linear criteria. The resulting residue is coded using a spatial transformation such as the DCT. A motion compensation scheme is used for coding enhancement layer VOPs by scaling motion vectors which have already been determined for the base layer VOPs. A reduced search area whose center is defined by the scaled motion vectors is provided. The motion compensation scheme is suitable for use with scaled frame mode or field mode video. Various processor configurations achieve particular scaleable coding results. Applications of scaleable coding include stereoscopic video, picture-in-picture, preview access channels, and ATM communications.

Abstract: The present invention describes a circuit for performing high speed forward Scaled Discrete Cosine Transform (SDCT) and inverse Scaled Discrete Cosine Transform (ISDCT) in pipeline architecture which is ideally, but not exclusively, used for compressing and decompressing large volume image data in real time. A high throughput of image data transform and inverse transform is achieved with a relatively slow internal clock. The four stage pipeline architecture of the present invention requires no more than five multipliers in rendering either the forward SDCT or inverse SDCT coefficients. The lower-order SDCT's for either the forward or the inverse direction are imbedded in the higher-order forward SDCT or inverse SDCT respectively. By taking advantage of the recursive properties of the SDCT's, a larger size SDCT can be always implemented by using a combination of variants of smaller size SDCT.

Abstract: A lead frame locater is used to locate actual positions of lead frame leads in respect to the semiconductor chip to provide accurate wire bonding of the semiconductor chip to the lead frame leads.

Abstract: A method and apparatus are provided for continuously slitting amorphous ribbon into a strip without adversely affecting the unique electrical, mechanical and magnetic properties of the material. The method includes the steps of heating a localized zone to approximately the glass transformation temperature and substantially simultaneously indenting the ribbon. The combined heating and indenting force produces a clean, high quality cut edge along the strip. Preferably, the positive engaging force causing indentation is effective to plow softened material to form a crystallized ridge adjacent the cut edge. The ridge is easily removed by a rotating brush. The indenter roller preferably includes a substantially V-shaped peripheral edge to concentrate the heat and force against the ribbon. A control unit is employed to provide the optimum heat, force and speed of relative movement between the indenter and the ribbon.

Abstract: Strips of amorphous metal containing embedded particulate matter and method for making it. Strips of amorphous metal containing embedded particles of abrasive material are useful for working the surfaces of solid articles by abrasion for forming or surface improvement. The method of making such strips involves forcing molten metal of a glass-forming alloy containing admixed particulate matter onto the surface of a moving chill body under pressure through a slotted nozzle located in close proximity to the surface of the chill body.