Abstract: Mechanisms for performing decoding of context-adaptive binary arithmetic coding (CABAC) encoded data. The mechanisms receive, in a first single instruction multiple data (SIMD) vector register of the data processing system, CABAC encoded data of a bit stream. The CABAC encoded data includes a value to be decoded and bit stream state information. The mechanisms receive, in a second SIMD vector register of the data processing system, CABAC decoder context information. The mechanisms process the value, the bit stream state information, and the CABAC decoder context information in a non-recursive manner to generate a decoded value, updated bit stream state information, and updated CABAC decoder context information. The mechanisms store, in a third SIMD vector register, a result vector that combines the decoded value, updated bit stream state information, and updated CABAC decoder context information. The mechanisms use the decoded value to generate a video output on the data processing system.

Abstract: Mechanisms for performing decoding of context-adaptive binary arithmetic coding (CABAC) encoded data. The mechanisms receive, in a first single instruction multiple data (SIMD) vector register of the data processing system, CABAC encoded data of a bit stream. The CABAC encoded data comprises a value to be decoded and bit stream state information. The mechanisms receive, in a second SIMD vector register of the data processing system, CABAC decoder context information. The mechanisms process the value, the bit stream state information, and the CABAC decoder context information in a non-recursive manner to generate a decoded value, updated bit stream state information, and updated CABAC decoder context information. The mechanisms store, in a third SIMD vector register, a result vector that combines the decoded value, updated bit stream state information, and updated CABAC decoder context information. The mechanisms use the decoded value to generate a video output on the data processing system.

Abstract: In the method and apparatus of the present invention, an editing system and method is provides that is sophisticated in features but easy to use. In one embodiment, the system includes multiple input sources, such as tape and live sources, at least one output recording device, at least one monitor, and a editing controller, such as a general purpose computer, which controls the input and output device. The controller further provides an innovative graphical user interface that intersperses video from the input devices along with control functions which the user can select using a mouse, keyboard or other input device.

Abstract: A system for simultaneous display of multiple video windows on a display device. This system includes a primary interface for receiving a primary video signal and a primary storage memory for storing data representing the primary video signal. Further, the present invention provides a plurality of secondary interface for receiving a plurality of secondary video signals and a secondary storage memory for storing data representing the plurality of secondary video signals. An output for selectively outputting the contents of a primary storage memory and the secondary storage memory to a display device so as to display video imagery represented by the primary video signal and secondary video signals in respective multiple video windows on the display device.

Abstract: A one pass adaptive bit rate control method. Data from a previous video field is used to calculate a quantizer scale factor for use in compressing a current video field. Large changes in compressed data size is used to detect scene changes. When a scene change is detected, a marker is inserted into the compressed data stream in place of the compressed field. An interpolated field is substituted during decompression for the scene change marker.

Abstract: A video signal processing circuit carries out error correction, error concealment and weighted mean processing sequentially on video signals reproduced by a video tape recorder. One and two dimensional error concealment modes are provided respectively utilizing sample data on the same line as erroneous sample data to be concealed, and sample data in peripheral and/or time displaced relation to the erroneous sample data. One of a plurality of error concealment modes is selected depending upon the state of error flags for the peripheral and/or time displaced sample data. In certain advantageous embodiments, original sample data for which a gray code has been set, is compared with error concealed data and the original sample data is output in place of the error concealed data where such comparison indicates that the difference between the two is within a predetermined acceptance threshold.

Abstract: An apparatus, including a lookup table memory, for gamma correcting a digital video signal based on the assumption that for small gamma, gamma correction is a linear function so that for a digital video input signal value x a gamma correction value d to be added to x can be calculated as a function of an opertor selected variable a according to the formulae:d=10.multidot.0.multidot.(x-x.sup.1.10)ord=10.multidot.9.multidot.(x-x.sup..90 ).