Method and circuit arrangement for improving the resolution of the
coefficients of digital signals, particularly digital TV signals
    1.
    发明授权
    Method and circuit arrangement for improving the resolution of the coefficients of digital signals, particularly digital TV signals 失效
    用于提高数字信号,特别是数字电视信号的系数分辨率的方法和电路装置

    公开(公告)号:US4924309A

    公开(公告)日:1990-05-08

    申请号:US235057

    申请日:1988-08-23

    IPC分类号: H04B14/00 H04N19/60

    CPC分类号: H04N19/60

    摘要: A method and apparatus for the improvement of the resolution of digital signals. In digital TV signals which are transformed into a frequency domain, irregularities in the pattern of the reproduced video signals occur because of rounding off errors, when the number of bits per sample is reduced during calculation of the coefficients. This is remedied by increasing the coefficients of the transformed signal values following at least one first coefficient, for example a DC-coefficient, and reducing them again after inverse transformation. This is applicable to digital systems using block processing in which, because of a limited amount of bits, a rounding off of the transmitted spectral coefficients is performed in the calculation.

    摘要翻译: 一种用于提高数字信号分辨率的方法和装置。 在转换成频域的数字电视信号中,当在系数的计算期间每个样本的比特数减少时,由于舍入误差而产生再现的视频信号的模式的不规则性。 这通过增加至少一个第一系数(例如DC系数)之后的变换信号值的系数来补救,并且在逆变换之后再次减小它们。 这适用于使用块处理的数字系统,其中由于有限的位数,在计算中执行发送的频谱系数的舍入。

    Transformation circuit
    2.
    发明授权
    Transformation circuit 失效
    变换电路

    公开(公告)号:US4860097A

    公开(公告)日:1989-08-22

    申请号:US132448

    申请日:1987-12-14

    IPC分类号: G06F17/14 H04N7/30 H04N19/60

    CPC分类号: H04N19/60 G06F17/147

    摘要: A circuit for the transformation of digital video signals, which circuit includes components operative for effecting transformation of a digital video signal in the form of a matrix of signal elements in a sequence which processes the matrix signal elements row by row and column by column, respectively.

    摘要翻译: 一种用于数字视频信号变换的电路,该电路包括用于以逐行逐列处理矩阵信号元素的序列中的信号元素矩阵的形式实现数字视频信号的变换的组件 。

    Method and apparatus for improving the resolution of digital signals
    3.
    发明授权
    Method and apparatus for improving the resolution of digital signals 失效
    用于提高数字信号分辨率的方法和装置

    公开(公告)号:US4887157A

    公开(公告)日:1989-12-12

    申请号:US232221

    申请日:1988-08-15

    IPC分类号: H04B14/04 H04N19/60

    CPC分类号: H04N19/60

    摘要: A method and apparatus for the improvement of the resolution of digital signals. In digital TV signals which are transformed into a selected frequency range, irregularities in the pattern of the reproduced video signals occur because of rounding off errors, when the number of places is reduced during calculation of the coefficients. This is remedied by increasing the coefficients of the transformed signal values following at least one first coefficient, for example a uniform component, and reducing them again before inverse transformation. This invention can be employed in digital systems using block processing in which, because of a limited number of bits, a rounding off of the transmitted spectral coefficients is performed in the calculation.

    摘要翻译: 一种用于提高数字信号分辨率的方法和装置。 在被转换成选定频率范围的数字电视信号中,当在系数的计算期间减少位数时,由于舍入误差而产生再现的视频信号的模式的不规则性。 这通过增加至少一个第一系数(例如均匀分量)之后的变换信号值的系数并在逆变换之前再次减小来补救。 本发明可以用于使用块处理的数字系统,其中由于有限数量的比特,在计算中执行发送的频谱系数的舍入。

    Method of printing pile fabrics
    5.
    发明授权
    Method of printing pile fabrics 失效
    绒面料印花方法

    公开(公告)号:US4255150A

    公开(公告)日:1981-03-10

    申请号:US972159

    申请日:1978-12-21

    摘要: Pile fabrics with a pile containing thermoplastic fibres are thermoprinted with a pattern, the contact pressure between the pile fabric and the thermoprinting web in the heating zone being such that about 40 to 60% of the pile is compressed, and immediately afterwards relief-formed and/or surface formed while still hot with a pattern which bears a strict relationship to the thermoprinted pattern. A machine for carrying out this process comprises a thermoprinting unit with adjustable contact pressure and a relief-forming and/or surface forming patterning unit which functions in synchronism and coordination therewith.

    摘要翻译: 具有热塑性纤维的绒头的堆叠织物以图案热压印刷,加热区域中绒头织物和热压印网之间的接触压力使得约40至60%的绒头被压缩,并且立即形成浮雕, /或表面形成,同时仍然具有与热印图案具有严格关系的图案。 用于执行该方法的机器包括具有可调接触压力的热压印单元和与其同步和协调起作用的凸版形成和/或表面形成图案单元。

    Machine for printing pile fabrics
    8.
    发明授权
    Machine for printing pile fabrics 失效
    印花机织物

    公开(公告)号:US4018066A

    公开(公告)日:1977-04-19

    申请号:US464464

    申请日:1974-04-26

    摘要: Pile fabrics with a pile containing thermoplastic fibers are thermoprinted with a pattern, the contact pressure between the pile fabric and the thermoprinting web in the heating zone being such that about 40 to 60% of the pile is compressed, and immediately afterwards relief-formed and/or surface formed while still hot with a pattern which bears a strict relationship to the thermoprinted pattern. A machine for carrying out this process comprises a thermoprinting unit with adjustable contact pressure and a relief-forming and/or surface forming patterning unit which functions in synchronism and coordination therewith.

    摘要翻译: 具有热塑性纤维的绒头的堆叠织物以图案热压印刷,加热区域中绒头织物和热压印网之间的接触压力使得约40至60%的绒头被压缩,并且立即形成浮雕, /或表面形成,同时仍然具有与热印图案具有严格关系的图案。 用于执行该方法的机器包括具有可调接触压力的热压印单元和与其同步和协调起作用的凸版形成和/或表面形成图案单元。