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公开(公告)号：JP2001282758A
公开(公告)日：2001-10-12
申请号：JP2001038012
申请日：2001-02-15
Applicant: LUCENT TECHNOLOGIES INC
Inventor： HARTUNG JOHN
IPC: G06F15/177 , G06F9/445 , G06F13/38 , G06F15/16 , G06F15/17
Abstract: PROBLEM TO BE SOLVED: To provide a method and a device for controlling plural processors in a multiprocessor computer system while using a serial chain configuration. SOLUTION: Serially interconnected buses form a daisy chain among plural processors and inside the serial chain, data are transferred from a master processor(MP) to a slave processor(SP). The MP has a non-volatile/volatile storage device and the SP has only a volatile storage device. Continuously to start-up or reset the system, a program and data required for each processor are transferred from the non-volatile storage device of the MP to a specified area in the volatile storage area of the SP of the daisy chain by a sequential serial transfer system. An instruction is prepared for processing and controlling the execution of the SP. A protocol for program or data transfer contains a transfer count and reduces an overhead related to transfer.
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公开(公告)号：JPH10126273A
公开(公告)日：1998-05-15
申请号：JP25175097
申请日：1997-09-17
Applicant: LUCENT TECHNOLOGIES INC
Inventor： HARTUNG JOHN , ROSENBERG JONATHAN DAVID
Abstract: PROBLEM TO BE SOLVED: To compress data so as to attain a high compression rate by an existing system, without sacrificing data reproduction quality. SOLUTION: Sets of code book vectors are generated and stored in a code book. A code book vector is retrieved and identified by a definite identification code. Original data are edited as sets of input vectors. A code book vector which matches well with the input vector is selected to each input vector, and an error difference (distance) between the selected and in well matched code book vector and the input vector is calculated. Then each input vector is expressed in response to required bit numbers as combination of the calculated error difference, and the identification code of the code book vector which matches well or a compressed version of raw data.
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Patent Agency Ranking
公开(公告)号：DE69724208D1
公开(公告)日：2003-09-25
申请号：DE69724208
申请日：1997-09-09
Applicant: LUCENT TECHNOLOGIES INC
Inventor： HARTUNG JOHN , ROSENBERG JONATHAN DAVID
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公开(公告)号：CA2194420A1
公开(公告)日：1997-07-23
申请号：CA2194420
申请日：1997-01-06
Applicant: LUCENT TECHNOLOGIES INC
Inventor： HARTUNG JOHN , JACQUIN ARNAUD ERIC , ROSENBERG JONATHAN DAVID
Abstract: A method and apparatus for coding an image comprising (at least) two regions (e.g., a facial region and a background region) which are to be coded with different quantization error parameters (e.g., quantizer step sizes), wherein the respective quantization error parameters are determined with use of a feed-forward rate control technique. Initial quantization error parameters are assigned to each region, and the overall bit rate which would result for the coding of the given frame is computed based on these assigned quantization error parameters. The computed bit rate is compared to a given bit rate constraint which may, for example, represent a limitation of a transmission channel. Based on the result of this comparison, one or both of the assigned quantization error parameters are adjusted, thereby resulting in different quantization error parameters for the two regions. For example, if the computed bit rate exceeds the given bit rate constraint, at least one of the quantization error parameters is advantageously adjusted in a direction which results in the use of fewer coding bits (e.g., a coarser quantization). If the given bit rate constraint exceeds the computed bit rate, at least one of the quantization error parameters is advantageously adjusted in a direction which results in the use of more coding bits (e.g., a finer quantization resulting in a higher coding quality). Finally, each of the regions is coded based on the correspondingly assigned quantization errorparameters.
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公开(公告)号：CA2212970C
公开(公告)日：2002-01-08
申请号：CA2212970
申请日：1997-08-13
Applicant: LUCENT TECHNOLOGIES INC
Inventor： ROSENBERG JONATHAN DAVID , HARTUNG JOHN
Abstract: A method and apparatus for providing high-speed data compressing without sacrificing the quality of data reconstruction. Each input vector or block o f original data is expressed as a combination of a codebook index and an error differential, or as a compressed version of the original block of data, depending on whether the t otal number of bits needed to express the input vector as a combination of a codebook in dex and an error differential is less than the total bits needed to send the compressed version of the original block of data. In one embodiment, the flexibility to express video data in a compressed format or as a combination of a codebook index plus an error diff erential is provided through a video system employing a codebook, a scalar quantizer, an d anentropy coder.
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公开(公告)号：DE69724208T2
公开(公告)日：2004-06-24
申请号：DE69724208
申请日：1997-09-09
Applicant: LUCENT TECHNOLOGIES INC
Inventor： HARTUNG JOHN , ROSENBERG JONATHAN DAVID
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公开(公告)号：CA2212970A1
公开(公告)日：1998-03-18
申请号：CA2212970
申请日：1997-08-13
Applicant: LUCENT TECHNOLOGIES INC
Inventor： ROSENBERG JONATHAN DAVID , HARTUNG JOHN
Abstract: A method and apparatus for providing high-speed data compressing without sacrificing the quality of data reconstruction. Each input vector or block of original data is expressed as a combination of a codebook index and an error differential, or as a compressed version of the original block of data, depending on whether the total number of bits needed to express the input vector as a combination of a codebook index and an error differential is less than the total bits needed to send the compressed version of the original block of data. In one embodiment, the flexibility to express video data in a compressed format or as a combination of a codebook index plus an error differential is provided through a video system employing a codebook, a scalar quantizer, and anentropy coder.
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