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公开(公告)号：DE69813632D1
公开(公告)日：2003-05-22
申请号：DE69813632
申请日：1998-05-12
Applicant: ST MICROELECTRONICS ASIA
Inventor： HUI WAI
IPC: H04N7/50
Abstract: This method and apparatus described herein imposes masking factors to the determined quantization step sizes of macroblocks of a video sequence such that encoding efficiency is increased. A conditional masking method can be used to take advantage of the fact that P-pictures are more important than B-pictures in terms of motion and scene updates as coding noise in such updates are likely propagated by P-pictures. The masking can be applied conditionally to motion/scene update regions of a picture such that coding noise is reduced and therefore bits are saved from less propagation of this noise. Before encoding each macroblock of a picture from an input video sequence, a video encoder with conditional masking determines if the macroblock type belongs to a significant motion or scene update region. A conditional masking factor is then determined for the macroblock based on the determined macroblock type and the picture coding type.The conditional masking factor is combined with a macroblock reference quantization step-size which may be calculated using conventional methods based on bit allocation and bit utilization, and an optional activity masking factor based on activity level of the macroblock and/or its surrounding region to form the final quantization step-size for coding of the macroblock.
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公开(公告)号：DE69806976T2
公开(公告)日：2003-03-27
申请号：DE69806976
申请日：1998-12-02
Applicant: ST MICROELECTRONICS ASIA
Inventor： HUI WEI
Abstract: A method of processing video data to detect field characteristics of the data, including processing pixel values of the data to obtain differences between the values of two successive fields of the data, processing the difference values to detect interlace patterns in the successive fields, determining if the successive fields belong to a progressive frame based on detection of the interlace patterns, and generating a progressive frame output indicating that a progressive frame has been detected. The pixel values of the first field of the successive fields and a subsequent field to the successive fields are processed to obtain further difference values to determine if the subsequent field is a redundant field, when the progressive frame output is generated.
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公开(公告)号：DE69712230T2
公开(公告)日：2002-10-31
申请号：DE69712230
申请日：1997-05-08
Applicant: ST MICROELECTRONICS ASIA
Inventor： ALVAREZ-TINOCO MARIO , GEORGE SAPNA , YANG HAIYUN
IPC: H04S1/00
Abstract: An audio decoder solution is here provided where a reduction in computing power is required. The proposed method consists of forcing the multiple output channels to only one type of inverse transformation format. A format of long transform length is more suitable for input signals whose spectrum remains stationary or quasi-stationary. This provides a greater frequency resolution, improved coding performance and a reduction of computing power required. Another format of two or more short transform lengths, possessing greater time resolution, is more desirable for rapidly changing signals with time. The computer power required for two or more short transforms should be higher than for only one transformation. The time versus frequency resolution trade-off should be considered when selecting a transform block length. Advantage is taken of human hearing behaviour to reduce the computing power of a processing engine (e.g. DSP) when downmixing from an M-channel input to a P-channel output is required. The encoder provides spectral information concerning the transmitted audio signal frame. This information corresponds to signals which are stationary/quasi-stationary or changing rapidly with time. Some analysis is required to decide which input channels are forced to long or short block conversion prior to frequency-domain downmixing and transformation.
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公开(公告)号：DE69712230D1
公开(公告)日：2002-05-29
申请号：DE69712230
申请日：1997-05-08
Applicant: ST MICROELECTRONICS ASIA
Inventor： ALVAREZ-TINOCO MARIO , GEORGE SAPNA , YANG HAIYUN
IPC: H04S1/00
Abstract: An audio decoder solution is here provided where a reduction in computing power is required. The proposed method consists of forcing the multiple output channels to only one type of inverse transformation format. A format of long transform length is more suitable for input signals whose spectrum remains stationary or quasi-stationary. This provides a greater frequency resolution, improved coding performance and a reduction of computing power required. Another format of two or more short transform lengths, possessing greater time resolution, is more desirable for rapidly changing signals with time. The computer power required for two or more short transforms should be higher than for only one transformation. The time versus frequency resolution trade-off should be considered when selecting a transform block length. Advantage is taken of human hearing behaviour to reduce the computing power of a processing engine (e.g. DSP) when downmixing from an M-channel input to a P-channel output is required. The encoder provides spectral information concerning the transmitted audio signal frame. This information corresponds to signals which are stationary/quasi-stationary or changing rapidly with time. Some analysis is required to decide which input channels are forced to long or short block conversion prior to frequency-domain downmixing and transformation.
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Patent Agency Ranking46.发明专利
公开(公告)号：DE602006014392D1
公开(公告)日：2010-07-01
申请号：DE602006014392
申请日：2006-07-27
Applicant: HYNIX SEMICONDUCTOR INC , ST MICROELECTRONICS ASIA
Inventor： SEO DONGHYUN , NAM KIJUN , YOON SEOKSEONG
IPC: G01R31/30
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公开(公告)号：DE60235888D1
公开(公告)日：2010-05-20
申请号：DE60235888
申请日：2002-09-12
Applicant: ST MICROELECTRONICS ASIA
Inventor： PLESSIER BERNARD , YAP MING KLAT
Abstract: The memory elements (ELE0-ELE511) in the sub-array are coupled to each other such that data content of the element is rotated by shifts. A sub-array selector (203) selects one of the sub-array according to memory address (111) and enables access to the selected sub-array. An access circuit accesses prescribed memory element in the selected sub-array based on another address, after prescribed number of shifts.
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48.发明专利
公开(公告)号：SG155797A1
公开(公告)日：2009-10-29
申请号：SG2008022717
申请日：2008-03-20
Applicant: ST MICROELECTRONICS ASIA , ST MICROELECTRONICS SA
Inventor： HUANG YONG , LEBOWSKY FRITZ , WANG HAIYUN , HUI LUCAS
Abstract: A video image processing system is described that generates the interpolated video images with sharp and jaggedness-free edges. A method of video image processing is also described that interpolates video images to generate the video images with sharp and jaggedness-free edges.
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公开(公告)号：DE602005011628D1
公开(公告)日：2009-01-22
申请号：DE602005011628
申请日：2005-10-10
Inventor： JEONG KUHONG , LEE HYUNGSANG , MULATTI JACOPO
IPC: G11C16/34
Abstract: A method of programming cells of a destination page of a nonvolatile memory and verifying whether logic values stored in programmed cells of a source page of the same memory have been correctly copied into corresponding cells of the destination page, exploits both the fast but inadequate-at-times Global Verify operation and, if the Global Verify operation fails for a certain number of attempts, the Byte-by-byte Verify operation, which is slower but accurate.
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公开(公告)号：DE69939954D1
公开(公告)日：2009-01-02
申请号：DE69939954
申请日：1999-11-11
Applicant: ST MICROELECTRONICS ASIA
Inventor： HUI YAU WAI LUCAS
IPC: H04N17/00
Abstract: A method and apparatus for noise level estimation in a digital video signal, the apparatus including a pixel activity detector that produces a mean pixel activity level for each picture in the video signal, a contrast analyzer that produces a contrast activity level for each picture and a noise level calculator that is coupled to the activity detector and contrast analyzer to produce an estimated noise level by offsetting the contrast activity level from accumulated output of the activity detector.
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