Dynamic RF AGC switch/mixer for optimal NTSC video detection
    1.
    发明申请
    Dynamic RF AGC switch/mixer for optimal NTSC video detection 失效
    动态RF AGC开关/混频器,用于最佳NTSC视频检测

    公开(公告)号:US20090201426A1

    公开(公告)日:2009-08-13

    申请号:US12069453

    申请日:2008-02-11

    IPC分类号: H04N5/52 H04B1/06

    CPC分类号: H04N5/52

    摘要: This disclosure presents an apparatus and method for automatic gain control correction for a television signal in which the Radio Frequency (RF) and Intermediate Frequency (IF) power signal levels are collected for a band of channels, identifying a channel having a strong RF power signal level and an IF gain signal level that is lower than a nominal IF gain signal level, comparing the identified channel RF gain signal level with the RF gain signal level of adjacent channels to identify the relative power signal levels of the channel and associated adjacent channels, and applying correction to the channel wherein there is an imbalance in the RF and IF power signal levels of the identified channel. This abstract is not to be considered limiting, since other embodiments may deviate from the features described in this abstract.

    摘要翻译: 本公开提供了一种用于电视信号的自动增益控制校正的装置和方法,其中为频道频带收集射频(RF)和中频(IF)功率信号电平,识别具有强RF功率信号的信道 电平和低于标称IF增益信号电平的IF增益信号电平,将识别的信道RF增益信号电平与相邻信道的RF增益信号电平进行比较,以识别信道和相关联的相邻信道的相对功率信号电平, 以及对所述信道应用校正,其中所识别的信道的RF和IF功率信号电平存在不平衡。 该摘要不被认为是限制性的,因为其他实施例可能偏离本摘要中描述的特征。

    Dynamic RF AGC switch/mixer for optimal NTSC video detection

    公开(公告)号:US08456579B2

    公开(公告)日:2013-06-04

    申请号:US12069453

    申请日:2008-02-11

    IPC分类号: H04N5/52

    CPC分类号: H04N5/52

    摘要: This disclosure presents an apparatus and method for automatic gain control correction for a television signal in which the Radio Frequency (RF) and Intermediate Frequency (IF) power signal levels are collected for a band of channels, identifying a channel having a strong RF power signal level and an IF gain signal level that is lower than a nominal IF gain signal level, comparing the identified channel RF gain signal level with the RF gain signal level of adjacent channels to identify the relative power signal levels of the channel and associated adjacent channels, and applying correction to the channel wherein there is an imbalance in the RF and IF power signal levels of the identified channel. This abstract is not to be considered limiting, since other embodiments may deviate from the features described in this abstract.

    System and method for TV automatic gain control (AGC)
    5.
    发明授权
    System and method for TV automatic gain control (AGC) 失效
    电视自动增益控制系统及方法(AGC)

    公开(公告)号:US07053961B2

    公开(公告)日:2006-05-30

    申请号:US10781289

    申请日:2004-02-17

    IPC分类号: H04N5/52

    摘要: In a terrestrial mode of a TV having analog and digital capability, the RF gain is controlled using the TV's IF tuner output. In a digital cable mode the RF gain is controlled using the output of the TV's IF SAW filter, and in an analog cable mode the RF gain is controlled using the output of an analog demodulator.

    摘要翻译: 在具有模拟和数字功能的电视机的地面模式中,使用电视的IF调谐器输出来控制RF增益。 在数字电缆模式下,使用TV的IF SAW滤波器的输出控制RF增益,在模拟电缆模式下,使用模拟解调器的输出控制RF增益。

    Method of spot welding aluminum alloys
    6.
    发明授权
    Method of spot welding aluminum alloys 失效
    铝合金点焊方法

    公开(公告)号:US5391854A

    公开(公告)日:1995-02-21

    申请号:US167034

    申请日:1993-12-16

    摘要: A method of spot welding aluminum alloy workpieces having electrical conductivity of 18.about.57% IACS and Vickers hardness of 26.about.200 is disclosed. The aluminum alloy workpieces are spot welded by a pair of welding electrodes having an electrical conductivity of not less than 92% IACS and a Vickers hardness of 50.about.130. The differences of the electrical conductivity and Vickers hardness between the welding electrodes and the aluminum alloy workpieces are in a range of 41.about.87% IACS and not larger than 99, respectively.

    摘要翻译: 公开了一种具有导电率为18分辨率57%IACS和维氏硬度为26DIFFERENCE 200的铝合金工件点焊方法。 铝合金工件通过一对电导率不低于92%IACS和维氏硬度为50差的焊接电极点焊。焊接电极和铝合金之间的导电性和维氏硬度差异 工件分别在41差异87%IACS和不大于99的范围内。

    Light-sensitive photopolymerizable composition containing polymer with
ethylenic unsaturation in the side chain
    7.
    发明授权
    Light-sensitive photopolymerizable composition containing polymer with ethylenic unsaturation in the side chain 失效
    含有聚合物的光敏光聚合组合物在侧链中具有乙烯不饱和度

    公开(公告)号:US5153095A

    公开(公告)日:1992-10-06

    申请号:US729898

    申请日:1991-07-15

    摘要: A light-sensitive composition comprises (A) a polymer comprising structural units represented by the following general formula (I): ##STR1## (wherein R.sup.1 represents a hydrogen atom or a methyl group; R.sup.2 represents a hydrogen atom, an alkyl group or an aryl group; and Z represents a bivalent connecting group having at least 3 non-metallic atoms in the main chain); (B) a monomer or an oligomer having at least two polymerizable ethylenically unsaturatred double bonds; and (C) a photopolymerization initiator. The light-sensitive composition has high sensitivity and is excellent in stability of sensitivities such as storage stability, temperature dependency and latent image sensitization.

    摘要翻译: 光敏性组合物包含(A)包含由以下通式(I)表示的结构单元的聚合物:其中R 1表示氢原子或甲基; R 2表示氢原子,烷基 基团或芳基; Z表示在主链中具有至少3个非金属原子的二价连接基团); (B)具有至少两个可聚合烯属不饱和双键的单体或低聚物; 和(C)光聚合引发剂。 感光性组合物具有高灵敏度,并且在保存稳定性,温度依赖性和潜像敏化等敏感性的稳定性方面优异。

    System and method for TV automatic gain control (AGC)
    9.
    发明申请
    System and method for TV automatic gain control (AGC) 失效
    电视自动增益控制系统及方法(AGC)

    公开(公告)号:US20060181649A1

    公开(公告)日:2006-08-17

    申请号:US11403030

    申请日:2006-04-12

    IPC分类号: H04N5/52

    摘要: In an analog terrestrial mode of a TV having analog and digital capability, the RF gain is controlled using the TV's demodulator output. In a digital cable mode the RF gain is controlled using the output of the TV's IF SAW filter, and in an analog cable mode the RF gain is controlled using the output of an analog demodulator.

    摘要翻译: 在具有模拟和数字能力的电视的模拟地面模式中,使用TV的解调器输出来控制RF增益。 在数字电缆模式下,使用TV的IF SAW滤波器的输出控制RF增益,在模拟电缆模式下,使用模拟解调器的输出控制RF增益。

    Fronted circuit
    10.
    发明授权
    Fronted circuit 失效
    前端电路

    公开(公告)号:US06678011B2

    公开(公告)日:2004-01-13

    申请号:US09842557

    申请日:2001-04-26

    IPC分类号: H04N544

    摘要: A band-pass filter separates an audio intermediate frequency signal from an input intermediate frequency signal, and an A/D converter circuit converts the audio intermediate frequency signal into a digital signal. A DSP performs audio detection on the digital signal and forms an AGC signal based on the signal. A variable gain amplifier performs AGC on the audio intermediate frequency signal in response to the AGC signal. A bandpass filter separates and takes out a video intermediate frequency signal from the signal, and an A/D converter circuit converts the video intermediate frequency signal into a digital signal. A DSP performs video detection on the signal. An AGC signal is formed based on the signals and AGC is performed on the video intermediate frequency signals by using the AGC signal.

    摘要翻译: 带通滤波器将音频中频信号与输入中频信号分离,并且A / D转换器电路将音频中频信号转换为数字信号。 DSP对数字信号执行音频检测,并根据信号形成AGC信号。 可变增益放大器响应于AGC信号对音频中频信号执行AGC。 带通滤波器从信号中分离并取出视频中频信号,A / D转换电路将视频中频信号转换为数字信号。 DSP对信号执行视频检测。 基于该信号形成AGC信号,并且通过使用AGC信号对视频中频信号执行AGC。