公开(公告)号：WO1990002469A1

公开(公告)日：1990-03-08

申请号：PCT/US1989002946

申请日：1989-07-06

Applicant: GENERAL ELECTRIC COMPANY

Inventor： GENERAL ELECTRIC COMPANY ,  GUIDA, Allan, Abraham

IPC: H04N11/06

CPC classification number: H04N11/006 ,  H04N7/015 ,  H04N19/30

Abstract: A video signal generating system develops an encoded video signal (314) representing less than all of the video information. Auxiliary signal generating circuitry develops a pair of auxiliary signals (S1, S2) representing in part the remaining video information. A first (S1) of the pair of auxiliary signals includes relatively high fidelity signal but with limited bandwidth. The second auxiliary signal (S2) includes relatively low fidelity information but has an effective higher bandwidth. Depending upon the information density (304) of the auxiliary information, the first and second auxiliary signals are selected (310) to produce an auxiliary output signal which is combined (316) with the encoded video signal for transmission. A receiver (320-362) responsive to the transmitted signal separates (320) the video and auxiliary signals. The video and auxiliary signals are decoded (322-362) and used to generate enhanced display images.

公开(公告)号：WO1993025034A1

公开(公告)日：1993-12-09

申请号：PCT/US1993004238

申请日：1993-05-11

Applicant: GENERAL ELECTRIC COMPANY

Inventor： GENERAL ELECTRIC COMPANY ,  GUIDA, Allan, Abraham ,  JONNALAGADDA, Krishnamurthy

IPC: H04L27/34

CPC classification number: H04L27/3438

Abstract: An encoding scheme resistant to transmission errors encodes a data bitstream for application to a quadrature amplitude modulator (QAM) in a high definition television system. The error-resistant code provides a rotationally symmetrical 32-point constellation on a plane defined by I, Q quadrature axes. The constellation is divided into first (A) and second (B) partitions arranged so that constellation points that are closest in distance to any constellation point of the first partition belong to the second partition, and constellation points that are closest in distance to any constellation point of the second partition belong to the first partition. The binary value of one bit of each of successive 9-bit packets in the bitstream determines that one of the two partitions (A, B) to which both of a consecutive pair of first and second constellation-point transmissions belong (the first and second transmitted constellation-points of that consecutive pair being selected by the then current 9-bit packet of the stream). The code is such that the binary values of such one bit of each of alternate ones of the successive 9-bit packets are opposite to one another. This permits a receiver decoder to decide whether each received constellation-point belongs to a first or a second constellation, thereby permitting the detection and, in most cases, the correction of transmission errors.

Abstract translation: 针对传输错误的编码方案编码用于应用于高分辨率电视系统中的正交幅度调制器（QAM）的数据比特流。 防错码在由I，Q正交轴定义的平面上提供旋转对称的32点星座。 星座被分成布置成第一（A）和第二（B）分区，使得距离第一分区的任何星座点的距离最近的星座点属于第二分区，并且距离到任何星座最近的星座点 第二个分区的点属于第一个分区。 比特流中每个连续的9比特分组的一比特的二进制值确定了连续的第一和第二星座点传输对中的两个分区（A，B）中的一个属于（第一和第二 该连续对的传输星座点由流的当前当前9比特分组选择）。 代码是使得连续的9位分组中的每一个的每一个的这一个比特的二进制值彼此相反。 这允许接收机解码器确定每个接收到的星座点是否属于第一或第二星座，从而允许检测，并且在大多数情况下允许传输错误的校正。

公开(公告)号：EP0643894A1

公开(公告)日：1995-03-22

申请号：EP93911071.0

申请日：1993-05-11

Applicant: GENERAL ELECTRIC COMPANY

Inventor： GUIDA, Allan, Abraham ,  JONNALAGADDA, Krishnamurthy

IPC: H04N5 ,  H03M13 ,  H04L27 ,  H04N7

CPC classification number: H04L27/3438

Abstract: An encoding scheme resistant to transmission errors encodes a data bitstream for application to a quadrature amplitude modulator (QAM) in a high definition television system. The error-resistant code provides a rotationally symmetrical 32-point constellation on a plane defined by I, Q quadrature axes. The constellation is divided into first (A) and second (B) partitions arranged so that constellation points that are closest in distance to any constellation point of the first partition belong to the second partition, and constellation points that are closest in distance to any constellation point of the second partition belong to the first partition. The binary value of one bit of each of successive 9-bit packets in the bitstream determines that one of the two partitions (A, B) to which both of a consecutive pair of first and second constellation-point transmissions belong (the first and second transmitted constellation-points of that consecutive pair being selected by the then current 9-bit packet of the stream). The code is such that the binary values of such one bit of each of alternate ones of the successive 9-bit packets are opposite to one another. This permits a receiver decoder to decide whether each received constellation-point belongs to a first or a second constellation, thereby permitting the detection and, in most cases, the correction of transmission errors.

公开(公告)号：EP0643894B1

公开(公告)日：1998-08-05

申请号：EP93911071.4

申请日：1993-05-11

Applicant: GENERAL ELECTRIC COMPANY

Inventor： GUIDA, Allan, Abraham ,  JONNALAGADDA, Krishnamurthy

IPC: H04L27/34

CPC classification number: H04L27/3438

Abstract: An encoding scheme resistant to transmission errors encodes a data bitstream for application to a quadrature amplitude modulator (QAM) in a high definition television system. The error-resistant code provides a rotationally symmetrical 32-point constellation on a plane defined by I, Q quadrature axes. The constellation is divided into first (A) and second (B) partitions arranged so that constellation points that are closest in distance to any constellation point of the first partition belong to the second partition, and constellation points that are closest in distance to any constellation point of the second partition belong to the first partition. The binary value of one bit of each of successive 9-bit packets in the bitstream determines that one of the two partitions (A, B) to which both of a consecutive pair of first and second constellation-point transmissions belong (the first and second transmitted constellation-points of that consecutive pair being selected by the then current 9-bit packet of the stream). The code is such that the binary values of such one bit of each of alternate ones of the successive 9-bit packets are opposite to one another. This permits a receiver decoder to decide whether each received constellation-point belongs to a first or a second constellation, thereby permitting the detection and, in most cases, the correction of transmission errors.

公开(公告)号：EP0430969B1

公开(公告)日：1995-10-04

申请号：EP89908572.4

申请日：1989-07-06

Applicant: GENERAL ELECTRIC COMPANY

Inventor： GUIDA, Allan, Abraham

IPC: H04N11/06

CPC classification number: H04N11/006 ,  H04N7/015 ,  H04N19/30

Abstract: A video signal generating system develops an encoded video signal (314) representing less than all of the video information. Auxiliary signal generating circuitry develops a pair of auxiliary signals (S1, S2) representing in part the remaining video information. A first (S1) of the pair of auxiliary signals includes relatively high fidelity signal but with limited bandwidth. The second auxiliary signal (S2) includes relatively low fidelity information but has an effective higher bandwidth. Depending upon the information density (304) of the auxiliary information, the first and second auxiliary signals are selected (310) to produce an auxiliary output signal which is combined (316) with the encoded video signal for transmission. A receiver (320-362) responsive to the transmitted signal separates (320) the video and auxiliary signals. The video and auxiliary signals are decoded (322-362) and used to generate enhanced display images.

公开(公告)号：EP0430969A1

公开(公告)日：1991-06-12

申请号：EP89908572.0

申请日：1989-07-06

Applicant: GENERAL ELECTRIC COMPANY

Inventor： GUIDA, Allan, Abraham

IPC: H04N11 ,  H04N7

CPC classification number: H04N11/006 ,  H04N7/015 ,  H04N19/30

Abstract: Un système de génération de signaux vidéo génère des signaux vidéo codés (314) qui représentent moins que la totalité des informations vidéo. Des circuits de génération de signaux auxiliaires génèrent une paire de signaux auxiliaires (S1, S2) qui représentent en partie les informations vidéo restantes. Le premier signal auxiliaire (S1) de la paire de signaux auxiliaires comprend un signal de fidélité relativement élevée mais à largeur de bande limitée. Le deuxième signal auxiliaire (S2) comprend des informations de fidélité relativement réduite mais a une largeur de bande plus grande. Selon la densité (304) des informations auxiliaires, les premier et deuxième signaux sont sélectionnés (310) de façon à produire un signal auxiliaire de sortie qui est combiné (316) avec les signaux vidéo codés à des fins de transmission. Un récepteur (320-362) sensible aux signaux transmis sépare (320) les signaux vidéo des signaux auxiliaires. Les signaux vidéo et auxiliaires sont décodés (322-362) et utilisés afin de générer des images affichées améliorées.