摘要:
A memory interface device of the present invention includes: an input buffer including a plurality of input areas; an output buffer including a plurality of output areas; and a control section for controlling the input buffer, the output buffer and a single port memory. The control section controls the input buffer and the single port memory so as to transfer a signal stored in one of the input areas of the input buffer to the single port memory while storing an input signal in another one of the input areas of the input buffer. The control section controls the output buffer and the single port memory so as to output as an output signal a signal stored in one of the output areas of the output buffer while transferring a signal stored in the single port memory to another one of the output areas of the output buffer.
摘要:
A method for loading of program data with high speed and efficiency along with eliminating the need for software modification even if changes occur in the storage addresses and data length of the program data stored in the program memory. In order to load program data in a rewritable manner into a number of functional circuits FC0, FC1, . . . , FCn operating in accordance with the supplied program data, a program memory, for example, a ROM 10, a program loader 12, and program designating apparatus, for example, a microprocessor 14, are provided in the system. In the ROM 10, multiple address pointers are stored in specified storage areas, and corresponding sets of program data are stored in the storage locations indicated by the address pointers in such a manner that a first set of program data is stored in the specified storage area which utilizes the address corresponding to the first address pointer as the start storage address, and a second set of program data is stored in the specified storage area which utilizes the address corresponding to the second address pointer as the start storage address.
摘要:
A single-instruction multiple-data (SIMD) processor (10) that incorporates features for horizontal scaling of video data. The processor (10) has a data input register (11) that is operable to store input data word in sequential locations in the data input register (11) and transfer the input data words to an array of processing elements. The processor (10) also has an output data register (16) operable to receive data output words from the array of processing elements and to output said data output words from sequential locations of said output data array. An input skip signal input to the processor causes a sequential data write operation to skip a location of the input data register while an output skip signal to the processor causes a sequential data read operation to skip a location of the output data register.
摘要:
A television receiving system includes a digital unit, which has at least one single-instruction multiple-data processor, especially suited for television processing. The processor receives data samples of each horizontal line word-serially, but processes the line in parallel. The processor has input, computational, and output layers that operate concurrently. Internal register files emulate line memory to eliminate the need for external line memories. The processor may be programmed with various improved definition television tasks, downloaded to it from a host development system.
摘要:
A television receiving system includes a digital unit, which has at least one single-instruction multiple-data processor, especially suitable for television processing. The processor receives data samples fo each horizontal line word-serially, but processes the line in parallel. The processor has input, computational, and output layers that operate concurrently. Internal register files emulate line memory to eliminate the need for external line memories. The processor may be programmed with various improved definition television tasks, downloaded to it from a host development system. Field memories and multiplexers control the data flow so that a still picture may be displayed.
摘要:
The invention provides an encoder for subjecting an input signal to the orthogonal transform for band compression and encoding. The encoder has a sample and hold circuit which samples the input signal at a sampling frequency three times that of the input signal, and an orthogonal transform unit which subjects the sampled signal to the orthogonal transform using as a coefficient an orthogonal matrix function of the order of 3n (where n is an integer of 2 or more) having as a minor matrix an orthogonal matrix of the order of 3: ##EQU1## having given numbers a, b and c as matrix elements. By maintaining the sampling frequency low, the frequency components of the input signal may be concentrated in a small number of transform outputs without causing an increase in the amount of data to be processed, without using a multiplier and without requiring an increase in the processing speed. The input signal is thus effectively band compressed and encoded.