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1. 发明公开

EP0241958A3 Broadband/narrow-band switching network of the time-space-time type and time and space switching stages for broadband/narrow-band channels 失效
标题翻译：宽带/窄带通道的时空类型和时间和空间切换阶段的宽带/窄带切换网络
公开(公告)号：EP0241958A3
公开(公告)日：1988-01-20
申请号：EP87200391
申请日：1987-03-04
申请人： AT&T en Philips Telecommunicatiebedrijven B.V. , AT&T and Philips Telecommunications B.V.
发明人： Van Baardewijk, Johannes , Bos, Marinus Anton
IPC分类号： H04N11/04 , H04N07/13
CPC分类号： H04Q11/0478 , H04J2203/0003
摘要： The invention relates to a switching system for a broadband ISDN-network by means of which signals can be transmitted with a large variety of bit rates. In addition to 64 kbit/s, 144 kbit/s and 2 Mbit/s narrow-band channels for inter alia telephony, data, video-information, broadband channels for, for example, broadcast-TV having bit rates from 35-70 Mbit/s are switched through. For both signal categories a common switching system of the TST-type is utilised, which avoids the necessity of providing a multiplexer for each subscriber. The control of the time switching stages and the space switching stage forming part of the switching system is divided in a control for the broadband channels and a control for the narrow-band channels. Thus, a simple, effective control of the switching system is realised which operates at a low rate whenever possible.

2. 发明公开

EP0207774A3 Block encoder 失效
标题翻译：块编码器
公开(公告)号：EP0207774A3
公开(公告)日：1988-01-20
申请号：EP86305072
申请日：1986-06-30
申请人： MATSUSHITA ELECTRIC INDUSTRIAL CO., LTD.
发明人： Juri, Tatsuro , Iketani, Akira , Yamamitsu, Chojuro , Ide, Akifumi
IPC分类号： H04N07/133 , H04N07/13
CPC分类号： H04N19/649 , H04N19/154 , H04N19/30 , H04N19/60 , H04N19/62
摘要： A block encoder comprises first block generating means (2) for constituting a three-dimensional large-size block, and a plurality of second block generating means (3, 4; 12, 13, 14, 16) for dividing the large size block into small size blocks. The small size blocks of two dimensions and three dimensions are changed over adaptively in dependence on image intorma- tion.

3. 发明公开

EP0135255A3 Inter-frame encoding/decoding equipment provided with a system for detecting a transmission error 失效
标题翻译：用于检测传输错误的系统提供的帧间编码/解码设备
公开(公告)号：EP0135255A3
公开(公告)日：1988-01-13
申请号：EP84304062
申请日：1984-06-15
申请人： NIPPON TELEGRAPH AND TELEPHONE CORPORATION , FUJITSU LIMITED , NEC CORPORATION
发明人： Kuroda, Hideo , Mukawa, Naoki , Hiraoka, Makoto , Matsuda, Kiichi , Nishiwaki, Mitsuo , Tsugane, Shuzo
IPC分类号： H04N07/13
CPC分类号： H04N19/895 , H04N19/50
摘要： An inter-frame encoding/decoding equipment for television signals consists of inter-frame encoding equipment encoding a difference between television signals and the output of a frame memory and inter-frame decoding equipment which receives an encoded signal sent from the inter-frame encoding device via a transmission line, which decodes by adding the output of the frame memory to the encoded signal. The inter-frame encoding equipment is provided with a first operation circuit which operates the remainders obtained by dividing, by a predetermined value, the number of bits of logic "1" in the bit groups into which the output or the input of the frame memory is divided by a predetermined unit. The inter-frame decoding equipment is provided with a second operation circuit which operates the remainders obtaiend by dividing, by a predetermined value, the number of bits of logic "1" in the bit groups into which the output or the input ot the frame memory is divided by a predetermined unit. The inter-frame decoding equipment is further provided with a comparator circuit which compares and checks the values operated by the first and the second operation circuits to detect a transmission error.

4. 发明公开

EP0077089A3 Device for storing or transmitting transform-coded picture signals and for regaining those picture signals 失效
标题翻译：用于存储或发送变换图像信号和用于注册图像信号的设备
公开(公告)号：EP0077089A3
公开(公告)日：1986-06-04
申请号：EP82201199
申请日：1982-09-24
申请人： Philips Patentverwaltung GmbH , N.V. Philips' Gloeilampenfabrieken
发明人： Meyer-Ebrecht, Dietrich, Dr. , Christiansen, Jens
IPC分类号： H04N07/13
CPC分类号： H04N19/60

5. 发明公开

EP0135994A3 Method for transmitting broadband information over a narrow band transmission medium 失效
标题翻译：用于在窄带传输介质上传输宽带信息的方法
公开(公告)号：EP0135994A3
公开(公告)日：1986-05-21
申请号：EP84304762
申请日：1984-07-12
申请人： INTERAND CORPORATION
发明人： Reiffel, Leonard , Jung, Wayne Douglas , Karlin, Richard A. , Tam, Raphael K.
IPC分类号： H04N07/13
CPC分类号： H04N11/042 , H04N7/24
摘要： An improved means for rapidly compressing, expanding, and displaying broad band information which is transmitted over a narrow band communications channel. In the preferred embodiment, a video image is cyclically assembled in low resolution and high resolution phases from digitized data representing gray level intensity for individual pixels which have been grouped into cells. During the initial cycle of the low resolution phase, a representative sample of said cell intensity values is transmitted by a sending station to a receiving station according to a video compression routine. Said receiving station then uses a video expansion routine to calculate an intensity value for those cells and pixels whose intensity values were not transmitted and displays an initial image. This image is refined during subsequent low-resolution cycles by means of additional transmissions from the sending station which replace the calculated cell intensity values with an actual value for that cell. During the high resolution phase, an error determination routine or external input from a viewer selects those cells containing the greatest deviation in intensity levels from the input video image. The error compression and expansion routines substitute a plurality of individual pixel intensity values for single cell intensity values. The present invention also discloses a means for allowing color capable stations to send or receive color transmissions while retaining the capability to interact with noncolor stations. Color data is compressed and interleaved with black and white data by a color capable sending station and subsequently separated and expanded by a color capable receiving station.

6. 发明公开

EP0126295A3 Pulse code modulation transmission system with data reduction, in particular for television signals 失效
标题翻译：脉冲代码调制传输系统，具有数据缩减特别是电视信号
公开(公告)号：EP0126295A3
公开(公告)日：1986-04-30
申请号：EP84104302
申请日：1984-04-16
申请人： Siemens Aktiengesellschaft
发明人： Grallert, Hans-Joachim, Dr.-Ing.
IPC分类号： H04N07/13 , H03K13/22
CPC分类号： H04B14/068 , H04N19/124 , H04N19/50

7. 发明公开

EP0105604A3 A dual mode encoding/decoding technique for use in a digital transmission system 有权转让
标题翻译：用于数字传输系统的双模式编码/解码技术
公开(公告)号：EP0105604A3
公开(公告)日：1985-05-29
申请号：EP83305037
申请日：1983-09-01
申请人： Western Electric Company, Incorporated
发明人： Bellisio, Jules Angelo , Larsen, Arthur Bertel
IPC分类号： H04N07/13 , H04N09/02
CPC分类号： H04N11/046 , H04B14/046 , H04N19/90
摘要： A dual mode encoding/decoding technique for use in digital systems wherein transmitted digital words are limited, on average, to an allotted number of bits. The transmitted digital words are coded into first and second modes. The first coding mode utilizes predictive diferential coding to provide a precision which can be greater than that obtainable by coding information solely with the allotted number of bits, while the second mode assures at least a minimum precision for the allotted number of bits. The first coding mode is transmitted as long as a preselected precision is provided. If not, the second coding mode is transmitted. In the disclosed embodiment, the dual mode encoding/decoding technique is applied to the transmission of color video signals.

8. 发明公开

EP0073309A3 Compression and expansion (quantification) of digital differentially encoded television signals 有权
标题翻译：数字差分编码电视信号的压缩和扩展（量化）
公开(公告)号：EP0073309A3
公开(公告)日：1983-04-06
申请号：EP82105354
申请日：1979-02-01
申请人： Etablissement Public de Diffusion dit "Télédiffusion de France" , Kretz, Francis , Boudeville, Jean-Louis
发明人： Kretz, Francis , Boudeville, Jean-Louis
IPC分类号： H04N07/13 , H04B12/04
CPC分类号： H03M3/042 , H04N19/124 , H04N19/50

9. 发明公开

EP0186444A3 Highly efficient coding apparatus for digital video signal 失效
标题翻译：数字视频信号的高效编码设备
公开(公告)号：EP0186444A3
公开(公告)日：1987-07-15
申请号：EP85309269
申请日：1985-12-19
申请人： SONY CORPORATION
发明人： Kondo, Tetsujiro
IPC分类号： H04N07/13
CPC分类号： H04N19/98
摘要： Coding apparatus for coding digital video data in the form of a block data to a compressed video data, comprises first detecting means for detecting a maximum value of the digital video data of plural picture elements in said block, second detecting means for detecting a minimum value of the digital video data of plural picture elements in said block, means for generating a dynamic range information of the block from said maximum and minimum values, means for subtracting said minimum value from each of the digital data to generate modified digital video data, means for encoding said modified digital video data with the fixed digitized bit number less than that of original digital video data, and transmitting means for transmitting the output of said encoding means and an additional code per one block formed of at least two of said maximum value, minimum value, and a signal according to said dynamic range information.
摘要翻译：用于以块数据形式将数字视频数据编码为压缩视频数据的编码装置包括用于检测所述块中的多个图像元素的数字视频数据的最大值的第一检测装置，用于检测最小值的第二检测装置在所述块中的多个图像元素的数字视频数据的装置，用于从所述最大值和最小值生成块的动态范围信息的装置，用于从每个数字数据中减去所述最小值以产生修改数字视频数据的装置，用于利用小于原始数字视频数据的固定数字化比特数对所述修改的数字视频数据进行编码;以及发送装置，用于发送所述编码装置的输出和每个块的附加代码，所述附加代码由所述最大值中的至少两个形成，最小值和根据所述动态范围信息的信号。

10. 发明公开

EP0185533A3 High efficiency technique for coding a digital video signal 失效
标题翻译：用于编码数字视频信号的高效技术
公开(公告)号：EP0185533A3
公开(公告)日：1987-07-15
申请号：EP85309127
申请日：1985-12-16
申请人： SONY CORPORATION
发明人： Kondo, Tetsujiro
IPC分类号： H04N07/13
CPC分类号： H04N19/98
摘要： Coding apparatus for coding digital video data in the form of a block data to a compressed video data, comprises first detecting means for detecting a maximum value of the digital video data of plural picture elements in said block, second detecting means for detecting a minimum value of the digital video data of plural picture elements in said block, means for generating a dynamic range information of the block from said maximum and minimum values, means for subtracting said minimum value from each of the digital data to generate modified digital video data, means for encoding said modified digital video data with the fixed digitized bit number less than that of original digital video data, and transmitting means for transmitting the output of said encoding means and an additional code per one block formed of at least two of said maximum value, minimum value, and a signal according to said dynamic range information.

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