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公开(公告)号：KR820001333B1
公开(公告)日：1982-07-23
申请号：KR780002945
申请日：1978-09-27
Applicant: MOTOROLA INC
Abstract: The AM receiver comprises an input stage(11, 12) for receiving the compatible stereo signal of (I+L+R)cos(Wct+0) and translating the signal to an intermediate frequency signal. A detector(16) is coupled to the input stage for providing the output signal which is proportional to the (L-R)cos. A corrector circuit(17, 22, 23, 25) which is coupled to the detector(16) provides a correctional signal for use in restoring exact sum and difference signals.
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公开(公告)号：KR810000345B1
公开(公告)日：1981-04-20
申请号：KR770000844
申请日：1977-04-07
Applicant: MOTOROLA INC
Abstract: The improved compatible AM stereophonic receiver has the parts for providing compensation signals proportioning the angle &phgr;. The parts comprises a limiter(34) for limiting the amplitude modulation components of the output signals(66b) of the amplifier(65), a multiplier(35) for multiplying the outputs of limiter(34) and phase shifter(73) for shifting the output of VCO(36) and a compensation cct(37). The outputs of the phase shifter(73) and the multiplier(35) are applied to the compensation cct(37). The outputs(95) of the compensation cct., whose value is divided the reference voltage output from the VCO(36) by cos&phgr;, is applied to the input stages of phase shifter(38)(39).
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公开(公告)号：US3764731A
公开(公告)日：1973-10-09
申请号：US3764731D
申请日：1972-02-14
Applicant: MOTOROLA INC
Inventor： PARKER N
CPC classification number: H04N9/82
Abstract: Apparatus for converting two independent functions of color saturation and hue into pulses varying in width and frequency each in accordance with one of said functions. Apparatus for scanning a record medium having two level information recorded thereon, said scanning apparatus producing a train of pulses in accordance with the information, which pulses vary independently in width and frequency, each variation representing an independent function of hue and saturation. Circuitry connected to said apparatus for processing the pulses to separate the width variations from the frequency variations and produce two electrical signals representative of the two functions of hue and saturation.
Abstract translation: 用于将色彩饱和度和色相的两个独立功能转换成根据所述功能之一的宽度和频率变化的脉冲的装置。 用于扫描具有记录在其上的两个级别信息的记录介质的设备，所述扫描设备根据该信息产生脉冲序列，该脉冲在宽度和频率上独立变化，每个变化表示色调和饱和度的独立功能。 连接到所述装置的电路用于处理脉冲以将宽度变化与频率变化分开，并产生表示色调和饱和度的两个功能的两个电信号。
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公开(公告)号：US3814858A
公开(公告)日：1974-06-04
申请号：US24815672
申请日：1972-04-27
Applicant: MOTOROLA INC
Inventor： PARKER N
CPC classification number: H04H20/89
Abstract: A system for broadcasting and receiving at least three stereophonically related audio components compatibly with present monophonic and stereophonic transmissions and receptions within the alloted bandwidth of present FM broadcast transmitters. Signals representative of the sum and difference of two stereophonically related audio components are broadcast in the audio band and on a 38 KHz suppressed subcarrier, respectively. A third signal, including a third component, is broadcast on a second 38 KHz suppressed subcarrier in quadrature with the first subcarrier. A fourth component may be transmitted on a third higher frequency suppressed carrier, or at reduced bandwidth about additional subcarriers generated about the second suppressed subcarrier. The components are distributed among signals so that monophonic reception may be achieved by receiving only the signals in the audio band and so that each additional signal received allows the recovery of an additional component.
Abstract translation: 一种用于广播和接收至少三个与立体声相关的音频组件的系统，其与目前的单声道和立体声传输和本FM调制广播发射机的分频带宽内的接收相容。 代表两个立体声相关音频分量的和差的信号分别在音频频带和38KHz抑制子载波上广播。 包括第三分量的第三信号在与第一子载波正交的第二38KHz抑制子载波上广播。 可以在第三较高频率抑制载波上发送第四分量，或者以减少的带宽发送关于围绕第二抑制子载波生成的附加子载波。 这些组件分布在信号之间，从而可以通过仅接收音频频带中的信号来实现单声道接收，并且使得接收的每个附加信号允许恢复附加组件。
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Patent Agency Ranking6.发明授权Pulse train processing system with discrimination against noise for use with pulse width modulation 失效具有脉冲宽度调制使用噪声的脉冲串扰加工系统
公开(公告)号：US3737779A
公开(公告)日：1973-06-05
申请号：US3737779D
申请日：1972-06-29
Applicant: MOTOROLA INC
Inventor： PARKER N
CPC classification number: H04B14/026 , H04N9/86
Abstract: System for separating pulses containing information in a pulse width modulated pulse train, wherein the leading edges of the pulses occur at a fixed repetition rate. Noise which occurs on the leading edge of the pulses is reduced by slicing the fixed position leading edges. A gating wave stabilized by the received pulse train, and which is insensitive to wide band noise, opens a gate for the pulses after the leading edge of each pulse, and closes the gate before the leading edge of the next pulse. A plurality of gates can be provided to separate pulse trains which are multiplexed to form a composite pulse train. The gates do not affect the pulse width modulation represented by the position of the lagging edges of the pulses and reduces the noise accompanying the demodulated signals.
Abstract translation: 用于分离脉冲宽度调制脉冲串中包含信息的脉冲的系统，其中脉冲的前沿以固定的重复频率发生。 通过对固定位置前缘进行切片来减少在脉冲前沿发生的噪声。 由接收的脉冲串稳定并且对宽带噪声不敏感的门控波在每个脉冲的前沿之后为脉冲打开一个门，并在下一个脉冲的前沿之前关闭门。 可以提供多个门来分离多路复用以形成复合脉冲串的脉冲串。 门不影响由脉冲的滞后边缘的位置表示的脉冲宽度调制，并降低伴随解调信号的噪声。
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公开(公告)号：US3730976A
公开(公告)日：1973-05-01
申请号：US3730976D
申请日：1971-12-20
Applicant: MOTOROLA INC
Inventor： PARKER N
Abstract: Color signal recording in which recorded pulses have widths and positions to represent color saturation and hue. For example, pulses of variable width are recorded, with alternate pulses representing one hue while interspersed pulses represent another hue. The system may use a flying spot scanner operating on a brightness image representation and on the color signal information to generate complete image representative signals. Circuitry is disclosed for minimizing error in deriving signals from the recording, which may be in the form of photographic film, for example, and also reducing error in the synchronization of the scanning operation. Display of the image representative signals may be through known television techniques.
Abstract translation: 记录脉冲具有宽度和位置以表示色彩饱和度和色相的彩色信号记录。 例如，记录可变宽度的脉冲，其中交替的脉冲表示一个色调，而散布的脉冲表示另一个色相。 系统可以使用在亮度图像表示上操作的飞点扫描仪和彩色信号信息来产生完整的图像代表信号。 公开了用于使来自记录的信号的误差最小化的电路，其例如可以是摄影胶片的形式，并且还减少了扫描操作的同步中的误差。 图像代表信号的显示可以通过已知的电视技术。
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公开(公告)号：US3852807A
公开(公告)日：1974-12-03
申请号：US39970173
申请日：1973-09-24
Applicant: MOTOROLA INC
CPC classification number: H04N9/643
Abstract: An automatic hue control circuit for a color television receiver operates to improve the flesh tones reproduced by the receiver by causing signals lying near the +I axis to be shifted to the +I axis if they fall within a predetermined angle on either side of the +I axis. This is accomplished with little or no effect on hues lying outside of the angle about the +I axis in which the correction occurs, so that correction is confined to the area about the +I axis where it is desired. This is accomplished by splitting the chroma signal into its I and Q constituent parts either at base-band or subcarrier frequencies and comparing the value of a predetermined fraction of +I components with the absolute value of Q voltage components EQ to control the operation of a gating circuit to prevent the passage of Q signals if the value of the +I component is greater than EQ and to permit the passage of signal components if EQ is greater than the fractional value of the +I components. The output of this gate then is combined with the I signal components to provide a reconstituted or reconstructed color signal which then is used to form the red, blue and green signals necessary to drive the cathode ray tube. The Q signal components are blocked only for signals within the angle determined by the fraction of the +I component which is compared with EQ . For signals lying outside of this angle, no modification of the color signals takes place.
Abstract translation: 用于彩色电视接收机的自动色调控制电路用于通过使位于+ I轴附近的信号移动到+ I轴来改善由接收机重现的肉色，如果它们落在+ I轴。 这对于在发生校正的+ I轴的角度之外的色调很少或没有影响，从而校正被限制在期望的+ I轴的区域。
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公开(公告)号：US3748376A
公开(公告)日：1973-07-24
申请号：US3748376D
申请日：1971-10-15
Applicant: MOTOROLA INC
Inventor： PARKER N
CPC classification number: H04B14/026 , H04N5/843 , H04N9/86
Abstract: Color signal recording of two channel color information, wherein one channel provides substantially more information than the other channel. The information is converted to a train of pulse width modulated pulses to contain the information, and with the train including more pulses for the one channel than for the other; such as two pulses for the one channel for each pulse of the other channel. Regularly recurring pulses for the two channels are shifted in phase to produce a combined pulse train in which the pulses are at regularly spaced positions. Pulses representing information in the one channel may be duplicated, or may be sampled at twice the rate, to provide two pulses for the one channel for each pulse of the other channel. The pulse train is recorded and reproduced, and then decoded to separate the pulses for the two channels and to position the pulses in each channel to provide regularly occurring pulse trains for each channel.
Abstract translation: 双通道颜色信息的彩色信号记录，其中一个通道提供比其他通道更多的信息。 该信息被转换成一串脉冲宽度调制脉冲以包含信息，并且列车包括比一个通道更多的脉冲; 例如对于另一个通道的每个脉冲的一个通道的两个脉冲。 两个通道的定期脉冲同相位移，以产生组合的脉冲序列，其中脉冲处于规则间隔的位置。 表示一个通道中的信息的脉冲可以被复制，或者可以以两倍的速率进行采样，以为另一通道的每个脉冲提供用于一个通道的两个脉冲。 脉冲串被记录和再现，然后被解码以分离两个通道的脉冲并且将每个通道中的脉冲定位以为每个通道提供定期发生的脉冲串。
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公开(公告)号：CA932455A
公开(公告)日：1973-08-21
申请号：CA164691
申请日：1973-02-27
Applicant: MOTOROLA INC
Inventor： PARKER N
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