公开(公告)号：EP0698316B1

公开(公告)日：2002-10-30

申请号：EP95913011.3

申请日：1995-03-08

申请人： ROBERT BOSCH GMBH

发明人： VOGT, Wilhelm ,  LAPPE, Dirk ,  MANN PELZ, Rodolfo ,  VOGT, Oliver ,  NITSCHE, Gunnar ,  MUNDT, Frieder

IPC分类号： H03M13/00

CPC分类号： H04N19/00 ,  H04L2001/0098 ,  H04N7/52 ,  H04N19/61 ,  H04N19/70 ,  H04N19/89

摘要： An image transmission process allows fixed data rates to be efficiently utilised. The image data to be transmitted are sorted into different categories depending on their sensitivity to channel errors and the categories are provided with different error protections and transmitted. Information words that contain information on the number of data bits belonging to the category and the type of error protection used precede the individual categories. In addition, a synchronisation word is added to the image data of each image. At the receiver, the first information words are channel-decoded according to a fixed coding rate and the information stored in the first information words is used for channel-decoding the image data. The image data are then image source decoded and outputted.

公开(公告)号：EP0834233A1

公开(公告)日：1998-04-08

申请号：EP96909068.0

申请日：1996-04-20

申请人： ROBERT BOSCH GMBH

发明人： FISCHER, Ralf ,  NITSCHE, Gunnar

IPC分类号： H04N7

CPC分类号： H04N7/54 ,  H04N19/89

摘要： A process is proposed for producing a video data stream destined for transmission over a data channel such as a radio telephone channel. The images are divided into a number of macro blocks and the video data is also divided into classes based on data type. The video data from at least some of the classes are incorporated in the stream in macro blocks. By contrast with the proposed standard H.263, video data of fixed length, in particular the DQUANT- and INTRADC values, are combined by macro block in a class intended for that purpose (ADMIN + DC-INTRA) and incorporated sequentially into the stream, without transmitting variable-length video data between them. Also proposed is a process for evaluating a video data stream: a first set of coded macro blocks is decoded starting from the video data bits transmitted first and a second set of coded macro blocks is decoded starting from the bits of the class transmitted last.

公开(公告)号：EP0834233B1

公开(公告)日：2000-01-05

申请号：EP96909068.7

申请日：1996-04-20

申请人： ROBERT BOSCH GMBH

发明人： FISCHER, Ralf ,  NITSCHE, Gunnar

IPC分类号： H04N7/64 ,  H04N7/54

CPC分类号： H04N7/54 ,  H04N19/89

摘要： A process is proposed for producing a video data stream destined for transmission over a data channel such as a radio telephone channel. The images are divided into a number of macro blocks and the video data is also divided into classes based on data type. The video data from at least some of the classes are incorporated in the stream in macro blocks. By contrast with the proposed standard H.263, video data of fixed length, in particular the DQUANT- and INTRADC values, are combined by macro block in a class intended for that purpose (ADMIN + DC-INTRA) and incorporated sequentially into the stream, without transmitting variable-length video data between them. Also proposed is a process for evaluating a video data stream: a first set of coded macro blocks is decoded starting from the video data bits transmitted first and a second set of coded macro blocks is decoded starting from the bits of the class transmitted last.

公开(公告)号：EP0698316A1

公开(公告)日：1996-02-28

申请号：EP95913011.0

申请日：1995-03-08

申请人： ROBERT BOSCH GMBH

发明人： VOGT, Wilhelm ,  LAPPE, Dirk ,  MANN PELZ, Rodolfo ,  VOGT, Oliver ,  NITSCHE, Gunnar ,  MUNDT, Frieder

IPC分类号： H04N7 ,  H04L1

CPC分类号： H04N19/00 ,  H04L2001/0098 ,  H04N7/52 ,  H04N19/61 ,  H04N19/70 ,  H04N19/89

摘要： An image transmission process allows fixed data rates to be efficiently utilised. The image data to be transmitted are sorted into different categories depending on their sensitivity to channel errors and the categories are provided with different error protections and transmitted. Information words that contain information on the number of data bits belonging to the category and the type of error protection used precede the individual categories. In addition, a synchronisation word is added to the image data of each image. At the receiver, the first information words are channel-decoded according to a fixed coding rate and the information stored in the first information words is used for channel-decoding the image data. The image data are then image source decoded and outputted.

公开(公告)号：EP1287634A2

公开(公告)日：2003-03-05

申请号：EP01943051.1

申请日：2001-05-10

申请人： ROBERT BOSCH GMBH

发明人： GIESKE, Kurt ,  NITSCHE, Gunnar

IPC分类号： H04L7/02 ,  H04H1/00 ,  H04J3/06

CPC分类号： H04L7/0029 ,  H04J3/0632 ,  H04L7/005

摘要： The invention relates to a radio receiver for receiving digital radio signals or a method for receiving digital radio signals. By means of a fixed frequency oscillator, said receiver and method are used to carry out timing control or to convert digital audio signals into a given clock speed. The digital asynchronous sample rate converter comprises an input buffer, a control system, a coefficient memory, an accumulator and an interpolator. The output signals of the sample rate converter are either transmitted for reproduction purposes or sent to a multimedia bus. Said inventive radio receiver, or inventive method, can also convert digital audio signals from sound carriers into a given clock speed.

公开(公告)号：EP1287634B1

公开(公告)日：2009-09-16

申请号：EP01943051.1

申请日：2001-05-10

申请人： ROBERT BOSCH GMBH

发明人： GIESKE, Kurt ,  NITSCHE, Gunnar

IPC分类号： H04L7/02 ,  H04J3/06 ,  H04B1/12 ,  H04B7/01

CPC分类号： H04L7/0029 ,  H04J3/0632 ,  H04L7/005

摘要： The invention relates to a radio receiver for receiving digital radio signals or a method for receiving digital radio signals. By means of a fixed frequency oscillator, said receiver and method are used to carry out timing control or to convert digital audio signals into a given clock speed. The digital asynchronous sample rate converter comprises an input buffer, a control system, a coefficient memory, an accumulator and an interpolator. The output signals of the sample rate converter are either transmitted for reproduction purposes or sent to a multimedia bus. Said inventive radio receiver, or inventive method, can also convert digital audio signals from sound carriers into a given clock speed.