公开(公告)号：EP0797353A1

公开(公告)日：1997-09-24

申请号：EP96830134.1

申请日：1996-03-20

Applicant: SGS-THOMSON MICROELECTRONICS s.r.l.

Inventor： Pau, Danilo

IPC: H04N5/44

CPC classification number: H04N7/0132 ,  H04N9/641 ,  H04N11/046 ,  H04N19/423 ,  H04N19/593 ,  H04N19/61 ,  H04N19/98

Abstract: An SQTV processor for converting a video signal received at an interlaced scanning frequency of 50 or 60 Hz, respectively to an interlaced scanning frequency of 100 or 120 Hz and implementing algorithms of noise filtering and of edge definition, including an analog-digital converter (ADC) of analog input signals of luminance and chrominance, at least a field memory (FIELD MEMORY_1) or more preferably two similar field memories where digital blocks of luminance (Y) value and blocks of values of each one of the two chrominance (U, V) components of said converted video signals are stored, one "First-In-First-Out" (LINE MEMORY) register for digital values read from said filed memory containing the pixels of a whole line of each field, a noise filtering block (NOISE REDUCTION), a sampling frequency converter (SRC) of said fields from 50 or 60 Hz to 100 or 120 Hz, means of conversion of the vertical format (VFC), means of edge definition (PE) enhancement and means of digital-to-analog conversion (DAC) of the processed luminance and chrominance (YUV) signals, is further equipped with means for compressing and coding said converted video signals according to an adaptive differential pulse code modulation (ADPCM) scheme of said digital values to be stored in said field memory (FIELD MEMORY_1) and means of ADPCM decoding and decompressing of data read from said field memory (FIELD MEMORY_1).
The significative reduction of the total memory requisite produced by the ADPCM pre-compression would make the entire system more readily integratable on a single chip.

Abstract translation: 一种用于将以50或60Hz的隔行扫描频率接收的视频信号分别转换为100或120Hz的隔行扫描频率并实现噪声滤波和边缘定义算法的SQTV处理器，包括模数转换器（ADC 亮度和色度的模拟输入信号，至少场存储器（FIELD MEMORY_1）或者更优选两个相似的场存储器，其中亮度（Y）值的数字块和两个色度（U，V）中的每一个的值的块 ）存储所述转换的视频信号的一个“先进先出”（LINE MEMORY）寄存器，用于从包含每个场的整行的像素的所述字段存储器读取的数字值，噪声滤波块（NOISE 所述场从50或60Hz到100或120Hz的采样频率转换器（SRC），垂直格式（VFC）的转换，边缘清除（PE）增强的方式以及数字 - 模拟转换 经处理的亮度和色度（YUV）信号的DAC（DAC）还配备有用于根据要存储在所述字段中的所述数字值的自适应差分脉码调制（ADPCM）方案对所述转换的视频信号进行压缩和编码的装置 存储器（FIELD MEMORY_1）和从所述字段存储器（FIELD MEMORY_1）读取的数据的ADPCM解码和解压缩的装置。 通过ADPCM预压缩产生的总存储量要求的显着降低将使整个系统更容易在单个芯片上集成。

公开(公告)号：EP0778709A1

公开(公告)日：1997-06-11

申请号：EP96830106.9

申请日：1996-03-11

Applicant: SGS-THOMSON MICROELECTRONICS S.r.l.

Inventor： Pau, Danilo ,  Sannino, Roberto

IPC: H04N7/50

CPC classification number: H04N19/428 ,  H04N19/42 ,  H04N19/423 ,  H04N19/593 ,  H04N19/61

Abstract: The video RAM requisite of an MPEG-2 decoder is reduced by recompressing according to an adaptive pulse code modulation scheme (ADPCM) at least the I and P pictures, after MPEG-2 decompression and before storing the relative data in the video RAM. The ADPCM recompressed and coded data written in the video RAM are decoded and decompressed during the reconstruction of a B-picture to be displayed.

Abstract translation: 一个MPEG-2解码器的视频RAM必需通过在自适应脉冲编码调制（ADPCM）至少在I和P图像，MPEG-2解压缩后重新压缩雅定到和在视频RAM中存储的相对数据之前减少。 写入视频RAM中的ADPCM重新压缩和编码的数据被解码和B图片的重建期间的解将被显示。

公开(公告)号：EP0858206A1

公开(公告)日：1998-08-12

申请号：EP97830041.6

申请日：1997-02-06

Applicant: SGS-THOMSON MICROELECTRONICS s.r.l.

Inventor： Pau, Danilo ,  Bruni, Roberta ,  Sannino, Roberto

IPC: H04N1/00 ,  H04N7/50 ,  H04N7/28

CPC classification number: G06T9/008 ,  G06T9/40 ,  H04N19/423 ,  H04N19/61 ,  H04N19/94

Abstract: The RAM requisite for temporarily storing a stream of digital data blocks in a coding/decoding system of information transferable by blocks may be significantly reduced by
compressing and coding the data by blocks through a tree search vector quantization (TSVQ), storing TSVQ compressed and coded data in the RAM and decoding and decompressing during the subsequent reading of the data stored in the RAM thus reconstituting the stream of digital data blocks.

Abstract translation: 通过块搜索向量量化（TSVQ）对数据进行压缩和编码，可以显着地减少用于将数据数据块流临时存储在可由块传输的信息的编码/解码系统中的RAM所需的存储器， RAM中的数据，并且在随后读取存储在RAM中的数据期间进行解码和解压缩，从而重构数字数据块流。

公开(公告)号：EP0793389A1

公开(公告)日：1997-09-03

申请号：EP96830085.5

申请日：1996-02-27

Applicant: SGS-THOMSON MICROELECTRONICS s.r.l.

Inventor： Pau, Danilo

IPC: H04N7/50

CPC classification number: H04N19/423 ,  H04N19/61

Abstract: The video memory requisite of an MPEG-2 decoder commonly comprising a stage of decompression of the respective I, P and B-pictures of the MPEG compression algorithm before writing the data in respective buffers organized in the video memory and in which the decompression of a B-picture implies the use of forward and backward motion compensation predictors is reduced by:

decompressing by macroblocks a B-picture while maintaining the relative backward predictor, stored in said memory, in a compressed form and decompressing macroblocks of a compressed P-picture using the respective forward predictor values;
defining through said decompressed P-macroblocks the region of the stored compressed backward predictor containing the backward predictor value of the macroblock of the B-picture undergoing decompression; and
extracting from said region the respective backward predictor value for the B-macroblock undergoing decompression, and completing the motion compensation routine according to the MPEG standard.

Abstract translation: 在将数据写入在视频存储器中组织的相应缓冲器中之前通常包括MPEG压缩算法的相应I，P和B图像的解压缩阶段的MPEG-2解码器的视频存储器必需品，其中解压缩 B图象意味着前向和后向运动补偿预测器的使用通过以下方式减少：通过宏块对B图像进行解压缩，同时保持存储在所述存储器中的相对反向预测器以压缩形式并且使用压缩的P图像解压缩宏块 各自的前瞻性预测值; 通过所述解压缩的P宏块定义包含经历减压的B图像的宏块的向后预测值的存储的压缩后向预测器的区域; 从所述区域中提取用于经历解压缩的B块的各自的反向预测值，并根据MPEG标准完成运动补偿例程。

公开(公告)号：EP0817498A1

公开(公告)日：1998-01-07

申请号：EP96830367.7

申请日：1996-06-28

Applicant: SGS-THOMSON MICROELECTRONICS s.r.l.

Inventor： Pau, Danilo

IPC: H04N7/50

CPC classification number: H04N19/428 ,  H04N19/423 ,  H04N19/61

Abstract: The video memory requisite of an MPEG decoder effecting a decompression of the I, P and optionally also of the B picture according to the MPEG compression algorithm and requiring the storing in respective buffers organized in said video memory of the respective MPEG- decompressed data, may be dynamically reduced by subsampling and recompressing according to a ADPCM algorithm at least the data pertaining to the I and P pictures before coding and storing them in the respective buffers. Subsequently, the stored data are decoded, decompressed and upsampled for reconstructing blocks of pels to be sent to a macroblock-to-raster scan conversion circuit.

Abstract translation: MPEG解码器的视频存储器必需实现所述I，P的减压，因此可选地，所述B图像雅丁给MPEG压缩算法的，并要求在respectivement MPEG解压缩数据的所述视频存储器组织respectivement缓冲器中的存储，可 通过子采样和再压缩gemäß被动态地减少到至少关于所述I和P图像的编码数据，并在缓冲器respectivement存储它们之前一个ADPCM算法。 随后，将存储的数据进行解码，解压缩并上采样用于重构象素块将被发送到一个宏数据块到光栅的扫描变换电路。

公开(公告)号：EP0785624A1

公开(公告)日：1997-07-23

申请号：EP96830018.6

申请日：1996-01-19

Applicant: SGS-THOMSON MICROELECTRONICS s.r.l.

Inventor： Pau, Danilo

IPC: H03K5/135 ,  H03K5/156 ,  H03K3/70

CPC classification number: H03K3/70 ,  H03K5/135 ,  H03K5/1565

Abstract: Resynchronized windowed clock signals are constructed starting from a main clock signal of the same frequency of that of the active phases of the constructed windowed clock signal, advantageously without requiring a main clock of a higher frequency.

Abstract translation: 重构的窗口时钟信号是从构成的窗口时钟信号的有源相位频率相同频率的主时钟信号开始构成的，有利地不需要较高频率的主时钟。