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1. 发明授权

US4156196A Memory scanning radio receiver with separate channel data selection 失效
标题翻译：内存扫描无线电接收机具有独立的通道数据选择
公开(公告)号：US4156196A
公开(公告)日：1979-05-22
申请号：US806672
申请日：1977-06-15
申请人： Noboru Someno , Norio Murata , Soichi Ohama
发明人： Noboru Someno , Norio Murata , Soichi Ohama
IPC分类号： H03J5/02 , H03J7/28 , H03L7/18 , H03L7/185 , H04B1/26 , H04B1/40 , H04B1/32
CPC分类号： H04B1/26 , H03J5/0281 , H03J7/285
摘要： A radio receiver having RF, frequency converter, demodulator and audio stages, in which the frequency converter stage is connected to a local oscillator composed of a phase locked loop. The radio receiver includes a variable frequency divider inserted into the phase locked loop, a memory circuit for variably controlling the frequency dividing ratio of the frequency divider in accordance with a signal to be received, a scanning counter for supplying a read-out control signal to the memory circuit, a clock signal source for generating a clock signal, a counter control circuit for controlling supply and supply-terminating of the clock signal fed to the scanning counter, a level detecting circuit for detecting if a signal supplied to the RF stage has a level higher than a predetermined level, a switching circuit for switching a received channel, and a circuit for cutting off the clock signal fed to the scanning counter when outputs of the switching circuit and level detecting circuit are fed thereto.
摘要翻译：具有RF，变频器，解调器和音频级的无线电接收机，其中变频器级连接到由锁相环组成的本地振荡器。无线电接收机包括插入锁相环的可变分频器，用于根据要接收的信号可变地控制分频器的分频比的存储电路，用于将读出的控制信号提供给存储器电路，用于产生时钟信号的时钟信号源，用于控制馈送到扫描计数器的时钟信号的供应和供给终止的计数器控制电路，用于检测提供给RF级的信号是否具有高于预定电平的电平，用于切换接收信道的开关电路，以及用于在将开关电路和电平检测电路的输出馈送到其中时切断馈送到扫描计数器的时钟信号的电路。

2. 发明授权

US4155043A Channel selection apparatus including a scanning system 失效
标题翻译：信道选择装置，包括扫描系统
公开(公告)号：US4155043A
公开(公告)日：1979-05-15
申请号：US788402
申请日：1977-04-18
申请人： Yoichi Sakamoto
发明人： Yoichi Sakamoto
IPC分类号： H03J7/28 , H04B1/32
CPC分类号： H03J7/28
摘要： A channel selection apparatus of the scanning tuning type in which a tuning frequency is swept by a sweeping voltage to select a given tuning frequency. The sweep of the frequency is controlled for each channel by a control signal stored for each channel in the form of a number of pulses to attain exact instant tuning to a specified channel. An operating unit which compensates for temperature drift of the elements comprising the apparatus is provided to correctly compensate for temperature drift of these elements thereby attaining exact tuning.
摘要翻译：扫描调谐型的频道选择装置，其中调谐频率被扫描电压扫描以选择给定的调谐频率。通过以多个脉冲的形式为每个通道存储的控制信号为每个通道控制频率的扫描，以实现对指定通道的精确即时调谐。提供了补偿包括该装置的元件的温度漂移的操作单元，以正确补偿这些元件的温度漂移，从而实现精确调谐。

3. 发明授权

US4114103A Crystalless scanning radio receiver 失效
标题翻译：结晶扫描无线电接收器
公开(公告)号：US4114103A
公开(公告)日：1978-09-12
申请号：US690881
申请日：1976-05-28
申请人： Peter W. Pflasterer
发明人： Peter W. Pflasterer
IPC分类号： H03J5/02 , H03J7/28 , H04B1/32 , H04B1/06
CPC分类号： H03J5/0281 , H03J7/285
摘要： A scanning FM monitor receiver is disclosed which is of the superheterodyne type and is capable of scanning and receiving a plurality of channels on a plurality of bands. The receiver incorporates a phase-locked-loop frequency synthesizer whih eliminates the need for crystals for every channel. The input data that the synthesizer requires to develop the individual preselected frequencies is provided by a random access memory that is programmed by the user for the frequencies desired. In one embodiment, decimal frequency information is entered on a numerical keyboard and converted into binary form for programming the memory. Indicator lamps on the receiver illuminate when a channel is being scanned and also provide a visual accuracy check when an operator programs the random access memory.

4. 发明授权

US4100497A Selective rescan delay for multi-channel scanning radio receiver 失效
标题翻译：多频扫描无线电接收机的选择性重新扫描延时
公开(公告)号：US4100497A
公开(公告)日：1978-07-11
申请号：US741475
申请日：1976-11-12
申请人： George H. Fathauer , Cecil Ernest Mathis , Warren L. Williamson
发明人： George H. Fathauer , Cecil Ernest Mathis , Warren L. Williamson
IPC分类号： H03J7/18 , H04B1/32
CPC分类号： H03J7/18
摘要： A signal-seeking scanning radio receiver employing a selective rescan delay circuit for delaying automatic resumption of multi-channel scanning for a period of time following termination of a signal on a tuned channel in response to an auxiliary output signal from a memory programmed to provide auxiliary output signals only for certain preselected channels tuned to a predetermined frequency on which two-way communications are anticipated without delaying automatic scan resumption for channels on which only one-way communications are anticipated.
摘要翻译：一种信号寻求扫描无线电接收机，其采用选择性重新扫描延迟电路，用于响应于来自被编程为提供辅助的存储器的辅助输出信号，在调谐信道上的信号终止之后的一段时间内延迟自动恢复多频道扫描输出信号仅用于调谐到预期频率的某些预选信道，在预定频率上预期双向通信，而不会延迟仅预期单向通信的信道的自动扫描恢复。

5. 发明授权

US4064461A Receiver including a station finding circuit 失效
标题翻译：接收机包括车站查找电路
公开(公告)号：US4064461A
公开(公告)日：1977-12-20
申请号：US628909
申请日：1975-11-05
申请人： Gustavus Lambertus Petrus van Eijck
发明人： Gustavus Lambertus Petrus van Eijck
IPC分类号： H03J7/20 , H03J7/28 , H04B1/32
CPC分类号： H03J7/28
摘要： A receiver employs automatic wave-range switching. The wave-range information is used to have a station finding circuit run through the unwanted wave-ranges at a fast rate and run through the desired wave-range at a comparatively slow rate. This is done by applyng counting pulses having a switchable frequency to a counter governing the finding action.
摘要翻译：接收机采用自动波段切换。波段信息用于使站找到电路以较快的速率穿过不需要的波段，以相对较慢的速率穿过所需的波段。这是通过将具有可切换频率的计数脉冲应用于控制发现动作的计数器来完成的。

6. 发明授权

US3980959A Tuner bandswitching system for a television tuning system 失效
标题翻译：用于电视调谐系统的调谐器频带切换系统
公开(公告)号：US3980959A
公开(公告)日：1976-09-14
申请号：US476083
申请日：1974-06-03
申请人： John Barrett George
发明人： John Barrett George
IPC分类号： H03J5/24 , H04B1/32
CPC分类号： H03J5/244
摘要： A tuner bandswitching system for a television receiver tuning system wherein a reset pulse generated at the completion of the selection of a channel to be received is utilized to determine the initial stable state of a series of bistable circuits and to provide a bandswitch reset pulse for use in establishing an initial voltage output from a voltage sweep generator utilized to scan a varactor tuned VHF tuner or a varactor tuner through one or more bands of frequencies. The bistable circuits control switching voltages supplied to the VHF tuner and the UHF tuner to provide for sequencing of the tuning system serially through, for example, the low VHF band, the high VHF band, and the UHF band until the appropriate band has been selected wherein the selected channel can be tuned. When the selected channel is tuned, a hold signal is developed. Data identifying the channel being received during a sweep through a given band is accumulated in a counter. At a predetermined output of the counter (e.g., "06" or "13") in the absence of the hold signal, the state of the bistable circuits is changed. As the state of a bistable circuit is changed, a bandswitch reset pulse is provided to again reset the voltage sweep generator in preparation for the scanning of the next band in the aforementioned sequence of bands.
摘要翻译：一种用于电视接收机调谐系统的调谐器频带切换系统，其中在完成选择要接收的信道时产生的复位脉冲被用于确定一系列双稳态电路的初始稳定状态，并提供一个使用频带开关复位脉冲在用于通过一个或多个频率频带扫描变容二极管调谐VHF调谐器或变容二极管调谐器的电压扫描发生器建立初始电压输出。双稳态电路控制提供给VHF调谐器和UHF调谐器的开关电压，以提供串行通过例如低VHF频带，高VHF频带和UHF频带的调谐系统的排序，直到选择了适当的频带其中可以调整所选择的通道。当所选通道被调谐时，开发保持信号。识别在通过给定频带的扫描期间正在接收的信道的数据被累积在计数器中。在没有保持信号的情况下，在计数器的预定输出（例如，“06”或“13”）处，双稳态电路的状态改变。当双稳态电路的状态改变时，提供一个频带开关复位脉冲以再次复位电压扫描发生器，以准备扫描上述频带序列中的下一个频带。

7. 发明授权

US3974452A Battery powered scanning receiver with synchronous power cycling through electrically operable visual indicators 失效
标题翻译：电池供电的扫描接收器，通过电动可视指示灯同步电源循环
公开(公告)号：US3974452A
公开(公告)日：1976-08-10
申请号：US503748
申请日：1974-09-06
申请人： Charles Cunningham
发明人： Charles Cunningham
IPC分类号： H03J7/18 , H04B1/32
CPC分类号： H03J7/18
摘要： A receiver is disclosed for signal-seeking operation on a plurality of channels. The receiver uses power cycling of the RF amplifier stage, mixers, local oscillators and intermediate frequency amplifiers which is in synchrony with the electronic stepping switch used to sequence among the channels. The power which is cycled to these portions of the receiver passes in series through light emitting diode channel indicators.
摘要翻译：公开了用于在多个通道上进行信号寻找操作的接收机。接收机使用RF放大器级，混频器，本地振荡器和中频放大器的功率循环，其与用于在通道之间进行排序的电子步进开关同步。循环到接收器的这些部分的功率通过发光二极管通道指示器串联通过。

8. 发明授权

US3968444A Skip band tuner 失效
标题翻译：跳频调谐器
公开(公告)号：US3968444A
公开(公告)日：1976-07-06
申请号：US522675
申请日：1974-11-11
申请人： Ralph F. Tenny
发明人： Ralph F. Tenny
IPC分类号： H03J5/02 , H03J7/28 , H04B1/32
CPC分类号： H03J5/0245 , H03J5/029 , H03J7/28
摘要： A digital tuning controller is provided which utilizes the storage of codes relating to the location and bandwidth of unused or illegal frequency bands to control a frequency acquisition operation with minimum circuitry.A two digit keyboard entry corresponding to a selected channel number is stored. First counter means indicates a current channel location. Second counter means counts regularly spaced frequency markers produced as the band is scanned to increment the first counter. A comparator signals coincidence between the content of the first counter and the keyboard entry. A third counter counts the frequency markers for comparison with the current output state of a read only memory (ROM) having stored codes corresponding to the location and bandwidth of the unused frequency bands. Upon coincidence, the third counter is reset, the second counter is inhibited and the next succeeding location of the ROM is addressed to provide an output state indicating the bandwidth of the skip band. Upon coincidence again occurring between the ROM and the third counter, the second counter is activated to resume counting and the tuning operation continues until either another skip band is reached or the selected channel is acquired.
摘要翻译：提供数字调谐控制器，其利用与未使用或非法频带的位置和带宽相关的代码的存储来以最小的电路来控制频率获取操作。

9. 发明授权

US3967203A Signal seeking receiver stopping circuit 失效
标题翻译：信号寻线接收机停电电路
公开(公告)号：US3967203A
公开(公告)日：1976-06-29
申请号：US554982
申请日：1975-03-03
申请人： Larry D. Lucas , Burtron D. Schertz , Lester Wilkinson
发明人： Larry D. Lucas , Burtron D. Schertz , Lester Wilkinson
IPC分类号： H03J7/18 , H04B1/32
CPC分类号： H03J7/18
摘要： A circuit for generating a center tuned pulse for stopping the operation of a signal seeking FM receiver includes means for developing a bias current which is added to the output currents of the quadrature detector of the receiver. A stopping pulse is generated whenever the difference between the output currents is less than the bias current and a 10.7 mHz. signal is present in the IF amplifier.
摘要翻译：用于产生用于停止寻找信号的FM接收机的操作的中心调谐脉冲的电路包括用于产生与接收机的正交检波器的输出电流相加的偏置电流的装置。每当输出电流之间的差小于偏置电流和10.7 mHz时，就产生停止脉冲。信号存在于IF放大器中。

10. 发明授权

US3714585A Scanning radio having rapid channel skipping capability 失效
标题翻译：具有快速通道滑行能力的扫描无线电
公开(公告)号：US3714585A
公开(公告)日：1973-01-30
申请号：US3714585D
申请日：1971-02-17
申请人： REGENCY ELECTRONICS
发明人： KOCH R
IPC分类号： H03J5/24 , H03J7/18 , H04B1/32
CPC分类号： H03J5/246 , H03J7/18
摘要： Multi-frequency receiver having a local oscillator with a plurality of channel determining elements sequentially connectable to control the received frequency. A shift register controlled by a multi-speed clock is used in sequencing through the channel elements. Switches are provided for each channel to control the speed of the clock. When a channel switch is set for a high speed and as the channel determining element associated with that switch is connected to the oscillator circuit, the clock pulses rapidly again thus sequencing the receiver to the next channel determining element before the carrier sensing circuitry can lock on the channel.

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