Abstract: An audio data compression method improves over existing standards because of its encoding strategy for silence. The method analyzes the audio input to an encoder. If the audio is for an analyzed time frame is silence, a single byte output is generated by the encoder. If the next frame is silence, no output is generated. When a receiver receives the compressed data, and detects a one-byte silence signal, it can capture that signal and repeat it to a decoder. When the compressed signal reaches the decoder, it is decompressed into an analog signal.
Type:
Grant
Filed:
March 28, 1997
Date of Patent:
February 22, 2000
Assignee:
International Business Machines Corporation
Abstract: The present invention relates to multiprocessors which has several microprocessors on a single chip. Efficiency is improved by stripping certain functions that are used less freely from the microprocessor and sharing these functions between several symmetric microprocessors. This method allows each CPU to occupy a smaller area while preserving complete symmetry of capability for software simplification. For example, the shared execution units can include the floating point unit and multimedia execution units.
Type:
Grant
Filed:
June 6, 1997
Date of Patent:
November 16, 1999
Assignee:
International Business Machines Corporation
Abstract: A computer system including a memory controller programmed with associated burst order translation logic and coupled to one or more microprocessors and including a memory circuit which supports either sequential or interleaved transmission of burst data communication between an I/O devices and one or more of the microprocessors. Data transmitted to or from an I/O device, processor or memory is temporarily stored in a buffer within the memory controller. The buffers contain multiple addresses with each address capable of containing a quadword of data. The quadwords of data are transferred to the addresses corresponding to which quadword is the requested quadword from the processor. The quadwords are transmitted, requested quadword first then the next quadword, continuing until all quadwords are transmitted. The corresponding addresses are determined through incrementing or decrementing a pointer to the corresponding addresses, dependent upon the burst ordering translation required.
Type:
Grant
Filed:
August 12, 1997
Date of Patent:
June 22, 1999
Assignee:
International Business Machines Corporation