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81.发明专利
公开(公告)号：SG130964A1
公开(公告)日：2007-04-26
申请号：SG2005059985
申请日：2005-09-16
Applicant: ST MICROELECTRONICS ASIA
Inventor： YONG HUANG , WAI HUI YAU
Abstract: A system and method for video noise reduction using motion and edge adaptive temporal-spatial filtering is disclosed in the present invention. The system includes a motion and edge adaptive temporal-spatial filter and an impulse noise filter which can reduce both Gaussian and impulse noise within the video signals. A spatial filter is used to define the pixel value for the motion pixels. A temporal noise filter is used to define the current pixel value for the still pixels. A motion detector and a tail-detector is used to distinguish between moving and non-moving image areas, In regions where the status of a pixel changes from static to motion, the spatial and temporal filter results are mixed for the system video output. However, if impulse noise is detected, an impulse noise filtered video output is used for the system video output.
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公开(公告)号：DE69932861T2
公开(公告)日：2007-03-15
申请号：DE69932861
申请日：1999-10-30
Applicant: ST MICROELECTRONICS ASIA
Inventor： ABSAR MOHAMMED JAVED , GEORGE SAPNA
IPC: G10L19/002 , G10L19/02 , G10L19/035
Abstract: A method for encoding an audio signal, including providing a masking function, representative of psychoacoustic masking; setting a quality value for data of the encoded signal, adjusting the masking function dependent upon the quality value; and allocating bits for quantization of the encoded signal based on the incremental masking function.
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公开(公告)号：DE69928842T2
公开(公告)日：2006-08-17
申请号：DE69928842
申请日：1999-10-30
Applicant: ST MICROELECTRONICS ASIA
Inventor： ABSAR JAVED , GEORGE SAPNA
IPC: H04B1/66 , G10L19/008 , G10L19/16
Abstract: Channel coupling for an AC-3 encoder, using mixed precision computations and 16-bit coupling coefficient calculations for channels with 32-bit frequency coefficients.
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公开(公告)号：DE60118800D1
公开(公告)日：2006-05-24
申请号：DE60118800
申请日：2001-06-08
Applicant: ST MICROELECTRONICS ASIA
Inventor： ABSAR MOHAMMED JAVED , GEORGE SAPNA
IPC: G10L19/02
Abstract: A unified filter bank for use in encoding and decoding MPEG-1 audio data, wherein input audio data is encoded into coded audio data and the coded audio data is subsequently decoded into output audio data. The unified filter bank includes a plurality of filters, with each filter of the plurality of filters being a cosine modulation of a prototype filter. The unified filter bank is operational as an analysis filter bank during audio data encoding and as a synthesis filter bank during audio data decoding, wherein the unified filter bank is effective to substantially eliminate the effects of aliasing, phase distortion and amplitude distortion in the output audio data.
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Patent Agency Ranking
公开(公告)号：SG119197A1
公开(公告)日：2006-02-28
申请号：SG200304873
申请日：2003-08-26
Applicant: ST MICROELECTRONICS ASIA
Inventor： KARTHIK MURALIDHAR S O A MURAL , SER WAH OH
Abstract: A method and system for estimating a frequency offset between a receiver and a transmitter, including the steps of, or means for: (a) receiving a first signal (1) from said transmitter and demodulating the first signal (18); (b) performing a frequency shift on said first signal (18) by a predetermined frequency factor to generate a second signal (19); (c) filtering each of said first and second signals (46,45); (d) determining the power of each of the filtered first and second signals (48,47); (e) determining an upper corner frequency value of the first signal us ing the power of the filtered first and second signals; (f) determining a lower corner frequency of the first signal using the determined power of the filtered first and second signals; and (g) determining a frequency offset value based on said upper corner frequency value and said lower comer frequency value (49).
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公开(公告)号：SG118180A1
公开(公告)日：2006-01-27
申请号：SG200301441
申请日：2003-03-07
Applicant: ST MICROELECTRONICS ASIA
Inventor： HUA JIAN SUN , GEORGE SAPNA
Abstract: A method is disclosed of decoding audio data, encoded in multiple DIF blocks in a Digital Video (DV) data stream, and outputting said audio data as a PCM frame, including the following steps: (i) fetching a single Digital Interface Frame (DIF) block from the DV data stream; (ii) de-shuffling a first byte in the single DIF block to determine its index (n) in the PCM frame; (iii) repeating step (ii) until the last byte in the single DIF block is processed; (iv) writing the de-shuffled data into the PCM frame for output if the present DIF block is the last in the present DV frame; (v) repeat steps (i) to (iv). Also disclosed is apparatus arranged to perform the method, and de-shuffling equations to perform the de-shuffling of the data.
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公开(公告)号：SG111087A1
公开(公告)日：2005-05-30
申请号：SG200206023
申请日：2002-10-03
Applicant: ST MICROELECTRONICS ASIA
Inventor： PHONG KAH-HO , HUI LUCAS Y W
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公开(公告)号：DE69820309T2
公开(公告)日：2004-10-21
申请号：DE69820309
申请日：1998-09-25
Applicant: ST MICROELECTRONICS ASIA , ST MICROELECTRONICS SA
Inventor： DESPREZ-LE GOARANT YANN , JAFFARD JEAN-LUC , MICHON CHRISTIAN
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公开(公告)号：DE69920055D1
公开(公告)日：2004-10-14
申请号：DE69920055
申请日：1999-02-26
Applicant: ST MICROELECTRONICS ASIA
Abstract: A method of processing video data to detect field characteristics of the data, said data having a plurality of fields, including the steps of: comparing first and second fields, said first field being a successive field of said second field; comparing pixel values of respective sub-blocks of said first field and a third field, said second field being a successive field of said third field; determining whether said first field is an interlaced field or a progressive field with respect to a successive field of said first field based on said steps of comparing.
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