摘要:
A storage medium format for a storage medium (105) containing packetized data programs includes packet identifiers (PIDs) that identify individual packetized datastreams constituting a program. The data format facilitates the association and assembly of the packetized datastreams of the program by a decoder, independent of PID de-mapping data. The PIDs include a base PID for identifying one datastream and a second PID of predetermined offset value to the base PID for identifying a second datastream. Corresponding packetized datastreams that constitute different programs are given the same PID (115).
摘要:
A system for decoding compressed image data in the form of pixel blocks representing an image of a first resolution to provide an image of a reduced second resolution decompresses a pixel block of the first resolution image. The system involves selecting (204) a sub-set of frequency domain coefficients in the compressed pixel block data, and processing elements (204,205,206,208) of the sub-set of coefficients to provide pixel data representing pixels comprising a spatially distributed sub-set of pixels in the pixel block in the first resolution image and excludes other pixels of the pixel block. The pixel data representing pixels comprising the spatially distributed pixels is formatted (210) to provide the reduced second resolution image.
摘要:
A system for decoding compressed image data in the form of pixel blocks representing an image of a first resolution to provide an image of a reduced second resolution decompresses a pixel block of the first resolution image. The system involves selecting (204) a sub-set of frequency domain coefficients in the compressed pixel block data, and processing elements (204,205,206,208) of the sub-set of coefficients to provide pixel data representing pixels comprising a spatially distributed sub-set of pixels in the pixel block in the first resolution image and excludes other pixels of the pixel block. The pixel data representing pixels comprising the spatially distributed pixels is formatted (210) to provide the reduced second resolution image.
摘要:
A storage medium format for a storage medium (105) containing packetized data programs includes packet identifiers (PIDs) that identify individual packetized datastreams constituting a program. The data format facilitates the association and assembly of the packetized datastreams of the program by a decoder, independent of PID de-mapping data. The PIDs include a base PID for identifying one datastream and a second PID of predetermined offset value to the base PID for identifying a second datastream. Corresponding packetized datastreams that constitute different programs are given the same PID (115).