A display engine of a video and graphics system includes one or more processing elements and receives graphics from a memory. The graphics data define multiple graphics layers, and the processing elements process two or more graphics layers in parallel to generate blended graphics. Alpha values may be used while blending graphics. The processing elements may be integrated on an integrated circuit chip with an input for receiving the graphics data and other video and graphics components. The display engine may also include a graphics controller for receiving two or more graphics layers in parallel, for arranging the graphics layers in an order suitable for parallel processing, and for providing the arranged graphics layers to the processing elements. The blended graphics may be blended with HDTV video or SDTV video, which may be extracted from compressed data streams such as an MPEG Transport stream.

Video and graphics system with parallel processing of graphics windows

A video, audio and graphics system uses multiple transport processors to receive in-band and out-of-band MPEG Transport streams, to perform PID and section filtering as well as DVB and DES decryption and to de-multiplex them. The system processes the PES into digital audio, MPEG video and message data. The system is capable of decoding multiple MPEG SLICEs concurrently. Graphics windows are blended in parallel, and blended with video using alpha blending. During graphics processing, a single-port SRAM is used equivalently as a dual-port SRAM. The video may include both analog video, e.g., NTSC/PAL/SECAM/S-video, and digital video, e.g., MPEG-2 video in SDTV or HDTV format. The system has a reduced memory mode in which video images are reduced in half in horizontal direction only during decoding. The system is capable of receiving and processing digital audio signals such as MPEG Layer 1 and Layer 2 audio and Dolby AC-3 audio, as well as PCM audio signals. The system includes a memory controller. The system includes a system bridge controller to interface a CPU with devices internal to the system as well as peripheral devices including PCI devices and I/O devices such as RAM, ROM and flash memory devices. The system is capable of displaying video and graphics in both the high definition (HD) mode and the standard definition (SD) mode. The system may output an HDTV video while converting the HDTV video and providing as another output having an SDTV format or another HDTV format.

Video, audio and graphics decode, composite and display system

An encoder uses an input file of data and a key to produce an output symbol. An output symbol with key I is generated by determining a weight, W(I), for the output symbol to be generated, selecting W(I) of the input symbols associated with the output symbol according to a function of I, and generating the output symbol's value B(I) from a predetermined value function F(I) of the selected W(I) input symbols. An encoder can be called repeatedly to generate multiple output symbols. The output symbols are generally independent of each other, and an unbounded number (subject to the resolution of I) can be generated, if needed. A decoder receives some or all of the output symbols generated. The number of output symbols needed to decode an input file is equal to, or slightly greater than, the number of input symbols comprising the file, assuming that input symbols and output symbols represent the same number of bits of data.

Information additive code generator and decoder for communication systems

A block request streaming system provides for improvements in the user experience and bandwidth efficiency of such systems, typically using an ingestion system that generates data in a form to be served by a conventional file server (HTTP, FTP, or the like), wherein the ingestion system intakes content and prepares it as files or data elements to be served by the file server. A client device can be adapted to take advantage of the ingestion process as well as including improvements that make for a better presentation independent of the ingestion process. The files or data elements are organized as blocks that are transmitted and decoded as a unit, and the system is configured to provide and consume scalable blocks such that the quality of the presentation increases as more of the block is downloaded. Encoding and decoding blocks with multiple independent scalability layers can be done as well.

Enhanced block-request streaming using scalable encoding

A video and graphics system has a reduced memory mode in which video images are reduced in half in horizontal direction during decoding. The video and graphics system includes a video decoder for decoding MPEG-2 video data. The video images may not be downscaled in the horizontal direction when no bi-directionally predicted pictures are used. The video and graphics system may output an HDTV video while converting the HDTV video and providing as another output having an SDTV format or another HDTV format. The output having an SDTV format may be recorded using a video cassette recorder (VCR) while the HDTV video is being displayed.

Video and graphics system with video scaling

A multiple picture composing method for composing video signals from a plurality of video signal sources which operate asynchronously to each other includes the steps of (a) successively selecting the video signals from the video signal sources, (b) reading the selected video signals in units of frames while maintaining horizontal and vertical synchronization of the selected video signals, (c) reducing the video signals in the units of frames in correspondence with areas allocated for each of pictures to be composed in a composed picture, (d) writing the reduced video signal in blocks of a picture composing memory corresponding to the areas allocated for each of the pictures to be composed, and (e) composing the video signals stored in the picture composing memory to obtain a composed video signal related to a composed picture and subjecting the composed video signal to at least one of an encoding process and a transmission process.

Multiple picture composing method and multiple picture composing apparatus

A packet error correcting apparatus includes a retransmission request controlling unit controlling a timing of transmission of a retransmission request to a packet transmitting apparatus from a retransmission request transmitting unit according to whether an error correcting unit can restore the lost packet within a predetermined time period when loss of the packet is detected. In a packet receiving apparatus supporting both Forward Error Correction (FEC) and Automatic Repeat reQuest (ARQ), it is possible to control a timing of transmission of a retransmission request when packet loss occurs, thereby to regenerate video and/or voice with the most suitable delay time while suppressing transmission of unnecessary retransmission requests.

Apparatus and method for packet error correction

When error correction data, which is to be inserted into transmission data at specific intervals, is generated by calculating exclusive-OR of the transmission data, cumulative exclusive-OR of the transmission data is continuously calculated independent of the error correction data insertion intervals. Exclusive-OR between a calculation of the exclusive-OR at the time of the previous error correction data insertion and a calculation of the exclusive-OR at the time of the current error correction data insertion is calculated, thereby generating error correction data to be inserted at the present time. This provides efficient error correction data calculation.

Method and apparatus for generating error correction data, and a computer-readable recording medium recording an error correction data generating program thereon

In an image monitor apparatus for monitoring an image: a camera picks up an image; an emission control unit controls at least one light emitting element; an image signal acquiring unit performs analog-to-digital conversion of the image picked up by the camera so as to generate a digitized image signal, and stores the digitized image signal; a luminance examining unit examines luminance of the image represented by the digitized image signal, and determines whether or not the amount of light detected and stored in an image-pickup plane of the camera is appropriate; and a luminance control unit controls at least one of the camera and the luminance control unit so that the amount of light stored in an image-pickup plane becomes appropriate.

Image monitor apparatus controlling camera and illumination in order to optimize luminance of picked-up image

A video data transmitting device 30 manages storage areas 31 a , 31 b of a memory card 31 by equally segmenting these storage areas into partitions whose capacities are equal to each other. Image data forming video data is stored piece by piece in each partition in the sequence from a head partition toward a tail partition. Then, the image data is overwritten sequentially from the oldest, whereby the storage areas 31 a , 31 b are always temporarily stored with N-pieces of image data starting from a point of the time when recording the image data and ending to a point of time tracing back for a predetermined period of time.

Tsuyoshi Miura

Papers

Multiple picture composing method and multiple picture composing apparatus

Apparatus and method for packet error correction

Method and apparatus for generating error correction data, and a computer-readable recording medium recording an error correction data generating program thereon

Image monitor apparatus controlling camera and illumination in order to optimize luminance of picked-up image

Video data saving device and video data saving method