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1. 发明授权

US4179662A Multiband scanning radio receiver using frequency synthesizer 失效
标题翻译：多频扫描无线电接收机采用频率合成器
公开(公告)号：US4179662A
公开(公告)日：1979-12-18
申请号：US931131
申请日：1978-08-04
申请人： Peter W. Pflasterer
发明人： Peter W. Pflasterer
IPC分类号： H03J5/02 , H03J7/28 , H04B1/26
CPC分类号： H03J7/285 , H03J5/0281
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 which 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. Indicator lamps on the receiver illuminate when a channel is being scanned and also provides a visual accuracy check when an operator programs the random access memory with the data codes for producing the various frequencies.
摘要翻译：公开了一种扫描式FM监视器接收机，其具有超外差类型并且能够在多个频带上扫描和接收多个信道。接收机采用锁相环频率合成器，无需每个通道的晶体。合成器需要开发各个预选频率的输入数据由用户为所需频率编程的随机存取存储器提供。当扫描通道时，接收器上的指示灯亮起，并且当操作者使用用于产生各种频率的数据代码来编程随机存取存储器时也提供视觉精确度检查。

2. 发明授权

US07436951B2 Portable interconnection system for incompatible audio communication networks 有权
标题翻译：便携式互连系统，用于不兼容的音频通信网络
公开(公告)号：US07436951B2
公开(公告)日：2008-10-14
申请号：US10792479
申请日：2004-03-03
申请人： Peter W. Pflasterer , Kenneth H. Marks , Roger D. Williams , Douglas D. Hall , John D. Van Valkenburgh
发明人： Peter W. Pflasterer , Kenneth H. Marks , Roger D. Williams , Douglas D. Hall , John D. Van Valkenburgh
IPC分类号： H04M1/00 , H04M9/00
CPC分类号： H04M9/002
摘要： A portable interconnection system has a housing having and a plurality of communications ports adapted for connection to a plurality of audio communication networks; electronics substantially enclosed by the housing; the electronics including at least interconnection electronics operative to selectively establish a plurality of independent connection sets, each connection set interconnecting at least a plurality of the communications ports for communications between a plurality of audio communication units operating in at least two different and incompatible ones of the audio communication networks; a user interface connected to the interconnection electronics and operative to control the interconnection electronics; wherein a combined weight of the housing and the electronics is not more than fifteen pounds. A display may show an interconnection status of the plurality of audio communication units for a plurality of the independent connection sets simultaneously.
摘要翻译：便携式互连系统具有壳体，其具有适于连接到多个音频通信网络的多个通信端口; 基本上被外壳包围的电子装置; 所述电子装置至少包括用于选择性地建立多个独立连接集的互连电子装置的互连电子装置，每个连接装置互连至少多个所述通信端口，以在多个音频通信单元之间进行通信，所述多个音频通信单元在至少两个不同的和不兼容的音频通信网络; 连接到互连电子装置并用于控制互连电子装置的用户接口; 其中壳体和电子装置的组合重量不超过15磅。显示器可以同时显示多个独立连接组的多个音频通信单元的互连状态。

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

US3961261A Crystalless scanning radio receiver 失效
标题翻译：结晶扫描收音机
公开(公告)号：US3961261A
公开(公告)日：1976-06-01
申请号：US450983
申请日：1974-03-14
申请人： Peter W. Pflasterer
发明人： Peter W. Pflasterer
IPC分类号： H03J5/02 , H03J7/28 , H04B1/06
CPC分类号： H03J7/285 , H03J5/0281
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 which 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. Indicator lamps on the receiver illuminate when a channel is being scanned and also provides a visual accuracy check when an operator programs the random access memory with the data codes for producing the various frequencies.
摘要翻译：公开了一种扫描式FM监视器接收机，其具有超外差类型并且能够在多个频带上扫描和接收多个信道。接收机采用锁相环频率合成器，无需每个通道的晶体。合成器需要开发各个预选频率的输入数据由用户为所需频率编程的随机存取存储器提供。当扫描通道时，接收器上的指示灯亮起，并且当操作者使用用于产生各种频率的数据代码来编程随机存取存储器时也提供视觉精确度检查。

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