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公开(公告)号：EP0994628A3
公开(公告)日：2004-01-14
申请号：EP99308212.2
申请日：1999-10-18
IPC分类号： H04N7/26
CPC分类号： H04N19/98
摘要： A block adaptive quantisation device processes blocks of sample pairs to determine an aggregate or average value at 18. The average or aggregate value is applied to each of a number of exponent look up tables 22 to 26, which output an exponent value (E) dependent on the extent of compression required. The exponent value is split by an exponent splitter into a remainder value (R) and a shift value (S). The remainder value is used to select one of a number of divide look up tables to which the unsigned data sample is applied, and the shift value is used to apply a variable bit shift to the data sample (either before or after the division operation). The divide code tables are grouped, and within each group the code tables are spaced logarithmically, as are the groups themselves. This arrangement considerably reduces the number of look up tables required for a given processor, reducing memory requirement and increasing speed.
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2.发明公开Digital signal processing apparatus for frequency demultiplexing or multiplexing 失效用于频率复用并解复用的数字信号处理装置
公开(公告)号：EP0831611A3
公开(公告)日：2002-08-14
申请号：EP97306520.4
申请日：1997-08-26
CPC分类号： H04J1/05
摘要： Digital signal processing apparatus for frequency demultiplexing a wideband channel digitised at 1 converts the data stream into parallel branches by means of serial-to-parallel converter 6, and the demultiplexing operation which consists of a low pass and high pass fine filtering stage 3a, 3b and a coarse filtering stage 4a, 4b is split among processors 3a, 3b, 4a, 4b across the parallel branches. Wideband signals can be processed without expensive processors because of the slower rate in the parallel channels. The invention may also be used for the inverse function of multiplexing.
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公开(公告)号：EP0994628A2
公开(公告)日：2000-04-19
申请号：EP99308212.2
申请日：1999-10-18
IPC分类号： H04N7/26
CPC分类号： H04N19/98
摘要： A block adaptive quantisation device processes blocks of sample pairs to determine an aggregate or average value at 18. The average or aggregate value is applied to each of a number of exponent look up tables 22 to 26, which output and exponent value (E) dependent on the extent of compression required. The exponent value is split by an exponent splitter into a remainder value (R) and a shift value (S). The remainder value is used to select one of a number of divide look up tables to which the unsigned data sample is applied, and the shift value is used to apply a variable bit shift to the data sample (either before or after the division operation).
Each divide look up table 42 to 48 comprises the same group of divide look up tables. The combination of the four look up tables in the group, together with the variable bit shift defines a series of code tables made up of a group of divide look up tables repeated at six dB intervals. The remainder value selects one of the code tables within the group, and the bit shift operation determines the selected one of the repeated groups. The code tables within the group are spaced logarithmically, as are the groups themselves. This arrangement considerably reduces the number of look up tables required for a given processor, reducing memory requirement and increasing speed.摘要翻译： 块自适应量化设备处理样本对的块以确定在18处的聚合或平均值。平均值或聚合值被应用于多个指数查询表22至26中的每一个，其输出指数值（E）依赖 在所需的压缩程度上。 指数值由指数分裂器分解为余数值（R）和移位值（S）。 剩余值用于选择应用无符号数据采样的多个分割查找表中的一个，并且使用移位值将可变位移位应用于数据采样（在除法运算之前或之后） 。 分割码表被分组，并且在每个组内，代码表对数地分开，组本身也是这样。 这种布置大大减少了给定处理器所需的查找表数量，减少了内存需求并提高了速度。
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公开(公告)号：EP0524772B1
公开(公告)日：1997-10-01
申请号：EP92306534.6
申请日：1992-07-16
发明人： Tondryk, Wieslaw Jan
CPC分类号： H03F3/19 , H03F1/0261 , H03F1/302 , H03F2200/222 , H03F2200/387 , H03F2200/42 , H03F2200/48 , H03F2200/534 , H03F2200/541 , H03F2200/75 , H03G1/04
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5.发明授权A power actuable, openable and closeable, lockable and unlockable, hinge assembly 失效机动化的铰链，用于打开，关闭，锁定和解锁
公开(公告)号：EP0505134B1
公开(公告)日：1997-01-15
申请号：EP92302263.6
申请日：1992-03-16
CPC分类号： E04H12/187 , E05F15/614 , H01Q1/1235
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6.发明授权An assembly and method for binary tree-searched vector quantisation data compression processing 失效装置和方法，用于数据压缩由量化是在二叉树矢量
公开(公告)号：EP0472283B1
公开(公告)日：1996-04-03
申请号：EP91306481.2
申请日：1991-07-17
CPC分类号： H03M7/3082 , G06T9/008 , H04N19/94 , Y10S707/99931
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公开(公告)号：EP0550250B1
公开(公告)日：1995-07-12
申请号：EP92311731.1
申请日：1992-12-23
发明人： Smith, Peter
CPC分类号： F03H1/0018 , B64G1/007 , B64G1/26 , B64G1/406
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公开(公告)号：EP0592166A2
公开(公告)日：1994-04-13
申请号：EP93307842.0
申请日：1993-10-01
发明人： Chant, Timothy John
CPC分类号： G07C5/0858 , G01P1/122 , G07B13/00 , G07C5/008 , G07C5/085
摘要： A tachograph 20 determines and records the location of a vehicle with time as well as other information relating to the operation of the vehicle. Access is restricted to an electronic storage means 73, in which the information is recorded, preventing tampering with that information.
摘要翻译： 行驶记录仪20确定并记录具有时间的车辆的位置以及与车辆的操作相关的其他信息。 访问仅限于其中记录信息的电子存储装置73，防止篡改该信息。
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公开(公告)号：EP0501690A3
公开(公告)日：1993-07-21
申请号：EP92301462.5
申请日：1992-02-21
CPC分类号： H04B7/18515 , H03H17/0266 , H04J1/05
摘要： Apparatus for and a method of digital signal processing utilises a technique known as sub-band decomposition and reconstruction. A plurality of input channels are provided each of which is mixed with a vernier frequency correction. In a multiplexer implementation, an FFT weighted overlap-add demultiplexer (c) is provided for decomposing each input channel into sub-bands. The sub-band outputs are decimated by a factor (d) to the common input sampling rate of a multiplexer, the sub-bands from each channel then being passed into the appropriate ports of an FFT weighted overlap-add multiplexer (f) by means of a switch matrix (e). The multiplexer (f) reconstructs the individual channels, interpolates each channel up to the output sampling rate of the FDT signal, mixes each channel up to its assigned carrier frequency in the FDM and multiplexes the channels. This provides a computationally efficient architecture with the flexibility to accommodate channels of differing bandwidths.
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