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1. 发明授权

US3893049A Electronic tuning system for television receivers 失效
标题翻译：电视接收机电子调谐系统
公开(公告)号：US3893049A
公开(公告)日：1975-07-01
申请号：US45442974
申请日：1974-03-25
申请人： MOTOROLA INC
发明人： BRAY DEREK
IPC分类号： H03J5/02 , H03J7/24 , H03J1/22 , H03H5/12
CPC分类号： H03J7/24 , H03J5/0227
摘要： An electronic tuning control system for television receivers employs several different functional integrated circuit modules to effect channel selection either locally at the receiver itself or by remote control. The system includes a control circuit which permits sequential scanning or stepping of the different channels in either the ''''up'''' or ''''down'''' direction. A provision is made for setting tuning control potentiometers for each channel to either a first range of settings indicative of ''''preferred'''' channels to which the receiver can be tuned or to a second range indicating that no tuning or channel selection is to be effected for ''''non-preferred'''' channels. The second range then is utilized to cause the receiver to automatically skip over such nonpreferred channels and scan only those channels having a preferred setting. In addition, direct selection of a channel is effected by closing individual switches associated with each channel. The direct selection circuitry operates through the scanning circuitry in conjunction with the skip mode circuitry to effect substantially instantaneous direct channel selection.
摘要翻译：用于电视接收机的电子调谐控制系统采用几种不同的功能集成电路模块来在接收机本身或通过远程控制本地实现信道选择。该系统包括一个控制电路，允许以“向上”或“向下”方向顺序扫描或步进不同的通道。设置用于将每个通道的调谐控制电位器设置为指示接收机可以被调谐到的“优选”通道的第一设置范围，或者指示不对第二范围进行调谐或通道选择的第二范围，非优先“渠道。然后，第二范围被用于使接收机自动跳过这样的非优选频道，并仅扫描具有优选设置的那些频道。此外，通过关闭与每个通道相关联的各个开关来实现通道的直接选择。直接选择电路通过扫描电路与跳过模式电路结合起来实现基本上瞬时的直接信道选择。

2. 发明授权

US3189829A Signal seeking receiving apparatus 失效
标题翻译：信号寻求接收装置
公开(公告)号：US3189829A
公开(公告)日：1965-06-15
申请号：US12624261
申请日：1961-07-24
申请人： WESTINGHOUSE ELECTRIC CORP
发明人： ROBERT BENTO , BARDITCH IRVING F , FRANCIS RACHAL
IPC分类号： H03J7/24
CPC分类号： H03J7/24

3. 发明授权

US3737565A Signal detector for a signal-seeking tuning system 失效
标题翻译：用于信号检测调谐系统的信号检测器
公开(公告)号：US3737565A
公开(公告)日：1973-06-05
申请号：US3737565D
申请日：1970-11-09
申请人： ZENITH RADIO CORP
发明人： MA J , ZLOTNICK F
IPC分类号： H03J7/24 , H04N5/50
CPC分类号： H04N5/505 , H03J7/24
摘要： A signal detector for a signal-seeking television tuner system which renders the system unresponsive to image signals by detecting the audio subcarrier, video subcarrier, and horizontal sync signals and applying them to a coincidence gate to provide a recognition signal only in response to the reception of a proper RF television signal. Detection of a fourth signal parameter, magnitude, enables the system to reject proper RF television signals too weak for satisfactory viewing.
摘要翻译：一种用于寻求信号的电视调谐器系统的信号检测器，其通过检测音频副载波，视频副载波和水平同步信号使系统对图像信号无响应，并将其应用于符合门以仅响应于接收而提供识别信号一个合适的射频电视信号。检测第四个信号参数，幅度使得系统能够拒绝适当的RF电视信号太弱以满足观看。

4. 发明授权

US3631349A Automatic signal-seeking circuitry 失效
标题翻译：自动信号检测电路
公开(公告)号：US3631349A
公开(公告)日：1971-12-28
申请号：US3631349D
申请日：1970-03-09
申请人： SYLVANIA ELECTRIC PROD
发明人： RHEE DONG WOO
IPC分类号： H03J7/24 , H04B1/32
CPC分类号： H03J7/24
摘要： An FM receiver having a source of detected signals and a voltage-responsive tuner includes signal-seeking apparatus having a charging circuit coupled to the source of detected signals, connectable to a potential source by a switching device, and coupled to the voltage-responsive tuner by a potential follower means whereby a varying potential accumulated in the charging circuit is applied to the voltage-responsive tuner until a received signal is detected whereupon the application of the varying potential to the voltage-responsive tuner is automatically discontinued.

5. 发明授权

US3591708A Color television receiver 失效
公开(公告)号：US3591708A
公开(公告)日：1971-07-06
申请号：US3591708D
申请日：1969-03-17
申请人： MATSURHITA ELECTRIC IND CO LTD
发明人： HIRASHIMA MASAYOSHI
IPC分类号： H03J7/24 , H03J7/32 , H04N9/71 , H04N9/12
CPC分类号： H03J7/32 , H03J7/24 , H04N9/71
摘要： A color television receiver, wherein a tuner is adapted to successively receive different broadcast waves under the control of a control voltage of stepped waveform, switching elements are successively rendered conductive for a predetermined period by a logical product of a signal resulting from detecting as to whether the broadcast stations are transmitting color programs or black-and-white programs, said switching elements corresponding in number to the broadcast waves so that indicator means connected with the respective switching elements are energized, thereby indicating whether the broadcast stations are transmitting color programs or black-and-white programs.

6. 发明授权

US3568065A Signal seeking scanning communication receiver with lower gain during scanning 失效
标题翻译：信号搜索扫描通信接收机在扫描期间具有较低的增益
公开(公告)号：US3568065A
公开(公告)日：1971-03-02
申请号：US3568065D
申请日：1968-07-15
申请人： BLAUPUNKT WERKE GMBH
发明人： PAGANY HUBERTUS , RASEHORN HANS
IPC分类号： H03J7/24 , H03J7/26 , H04B1/32
CPC分类号： H03J7/24 , H03J7/26
摘要： The threshold for signals to be selected during scanning is set such that signals will be selected which are just above the noise level of the receiver; during scanning, a gain control circuit regulates the overall gain of the receiver below its normal sensitivity, so that only stronger signals will be selected which, however, after having been selected will be amplified with a higher gain than during the scanning for selection.

7. 发明授权

US3467870A Automatic frequency sweep apparatus 失效
标题翻译：自动频闪装置
公开(公告)号：US3467870A
公开(公告)日：1969-09-16
申请号：US3467870D
申请日：1966-01-28
申请人： TRIO CORP
发明人： AOYAMA HIROSHI
IPC分类号： H03J7/24 , H04B1/32
CPC分类号： H03J7/24

8. 发明授权

US4495650A Electronic tuning type radio receivers 失效
标题翻译：电子调谐型收音机
公开(公告)号：US4495650A
公开(公告)日：1985-01-22
申请号：US526222
申请日：1983-08-25
申请人： Hideo Konishi , Kazunori Matsuoka , Takao Gouya
发明人： Hideo Konishi , Kazunori Matsuoka , Takao Gouya
IPC分类号： H03J7/18 , H03D5/00 , H03J7/20 , H03J7/24 , H03J7/28 , H04B1/16 , H04B1/26
CPC分类号： H03J7/24 , H03D5/00 , H03J7/20
摘要： An electronic tuning AM/FM radio receiver utilizes a common circuit for both FM reception and AM reception to stop automatically the scanning operation on the local oscillation frequency at its optimum point thus attaining simplicity of circuit structure, whereas the prior art needed a pair of complicated circuits for FM reception and AM reception. There is a local oscillator for AM reception and a second local oscillator for FM reception provided independently or commonly to each other, a control circuit provided for controlling selectively the scanning operation of the local oscillators and holding the local oscillation frequency of the selected one of the local oscillators at a scanning frequency when a tuning signal is applied, and a converter provided for converting an FM intermediate frequency into an AM intermediate frequency.
摘要翻译：电子调谐AM / FM无线电接收机利用用于FM接收和AM接收的公共电路在其最佳点处自动停止对本地振荡频率的扫描操作，从而实现电路结构的简单性，而现有技术需要一对复杂的用于FM接收和AM接收的电路。 AM接收的本地振荡器和独立地或共同地提供的FM接收的第二本地振荡器，用于选择性地控制本地振荡器的扫描操作并保持所选择的一个的本地振荡频率的控制电路当施加调谐信号时处于扫描频率的本地振荡器和用于将FM中频转换成AM中频的转换器。

9. 发明授权

US3902121A Automatic tuner 失效
标题翻译：自动调谐器
公开(公告)号：US3902121A
公开(公告)日：1975-08-26
申请号：US31232672
申请日：1972-12-05
申请人： MATSUSHITA ELECTRIC IND CO LTD
发明人： YOSHINO HIROKAZU , YAMAGUCHI TETSUO , TSUBOKA EIICHI
IPC分类号： H03J5/02 , H03J7/24 , H04B1/36
CPC分类号： H03J5/0245 , H03J7/24
摘要： An automatic tuner for television receivers in which the oscillation frequency of a first voltage controlled oscillator in a phase locked loop is brought to a predetermined frequency corresponding to given channel selection information, and the oscillation frequency of a second voltage controlled oscillator is swept until the beat frequency obtained from the first and second voltage controlled oscillators reaches a particular frequency. After the reaching of the practicular frequency, the second voltage controlled oscillator is locked to its oscillation frequency at the instant of reaching the particular frequency, and its output is used as a local oscillator signal.

10. 发明授权

US3706041A Automatic tuning circuit 失效
标题翻译：自动调谐电路
公开(公告)号：US3706041A
公开(公告)日：1972-12-12
申请号：US3706041D
申请日：1970-10-20
申请人： EMERSON ELECTRIC CO
发明人： KRAUSSER FRIEDRICH JOHANN
IPC分类号： H03J7/24 , H03J7/26 , H04B1/32
CPC分类号： H03J7/24 , H03J7/26
摘要： An automatic tuning device for use with a radio receiver includes a capacitor for storing a voltage which determines the frequency to which the device is tuned, means for charging the capacitor, and a control element connected across the capacitor for preventing further charging or discharging of the capacitor after the receiver has been properly tuned. When it is desired to tune the receiver to a new station, an advance switch is actuated, causing the enabling voltage from the control device to be removed so that the capacitor can be further charged. When the capacitor has been charged to a voltage corresponding to the high end of the frequency band, a unijunction transistor across the capacitor is fired, causing the capacitor to discharge to a voltage corresponding approximately to the lowest frequency in the band of interest.
摘要翻译：用于无线电接收机的自动调谐装置包括：电容器，用于存储确定装置调谐频率的电压;对电容器充电的装置;以及连接在电容器两端的控制元件，用于防止进一步充电或放电接收机已正确调谐后的电容。当希望将接收机调谐到新的站时，启动提前开关，导致来自控制装置的使能电压被去除，使得电容器可以被进一步充电。当电容器已经被充电到与频带的高端相对应的电压时，跨过电容器的单结晶体管被点燃，使得电容器放电到相当于感兴趣的频带中的最低频率的电压。

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