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1. 发明授权

US4320255A Radio with audio controls and associated displays 失效
标题翻译：收音机带有音频控制和相关显示
公开(公告)号：US4320255A
公开(公告)日：1982-03-16
申请号：US158531
申请日：1980-06-11
申请人： Michael W. Null , Charles W. Bethards , William A. Burzynski
发明人： Michael W. Null , Charles W. Bethards , William A. Burzynski
IPC分类号： H03G1/02 , H03G3/00 , H03G3/04 , H03J1/00 , H03J5/02 , H04B1/16 , H04B1/20 , H04R5/04 , H04B1/26 , H04S7/00
CPC分类号： H03J5/0281 , H03G1/02 , H03G3/00 , H03G3/04 , H03J1/0016 , H04B1/16 , H04B1/20
摘要： An electronic pushbutton tunable radio (10) having various audio controls is disclosed. A single pushbutton (22) is utilized to implement volume, fader and balance modes of operation during which up/down pushbuttons (20,21) control the overall and relative magnitude of audio signals produced by four speakers (24-27) while at the same time a single display (17) is utilized to display, respectively, either the channel to which the radio is tuned, the relative magnitude between right and left speaker audio signals, or the relative magnitude between front and back speaker audio signals. The radio has tuning pushbuttons (14) for direct recall of preset radio channels in a tuning mode operation. The radio includes an audio mode pushbutton (23) which terminates the tuning mode and implements an audio control mode wherein the recall tuning pushbuttons (14) now serve as on/off manual controls for audio control circuits, such as the radio local/distant (L/D) circuit, while at the same time utilizing the display (17) previously utilized to indicate channel frequency to now indicate the operative state of the audio circuits controlled by the recall pushbuttons in the audio mode.
摘要翻译：公开了具有各种音频控制的电子按钮可调谐无线电（10）。使用单个按钮（22）来实现音量，推子和平衡操作模式，其中上/下按钮（20,21）控制由四个扬声器（24-27）产生的音频信号的总体和相对幅度，而在同时使用单个显示器（17）来分别显示无线电被调谐的频道，左和右扬声器音频信号之间的相对幅度，或前后扬声器音频信号之间的相对幅度。收音机具有调谐按钮（14），用于在调谐模式操作中直接调用预设的无线电频道。收音机包括音频模式按钮（23），其终止调谐模式并实现音频控制模式，其中调用调谐按钮（14）现在用作音频控制电路的开/关手动控制，诸如无线电本地/远端（ L / D）电路，同时利用先前用于指示频道频率的显示器（17）来指示由音频模式中的召回按钮控制的音频电路的操作状态。

2. 发明授权

US06882677B2 Method and apparatus for facilitating handoff in a wireless local area network 有权
标题翻译：用于促进无线局域网中切换的方法和装置
公开(公告)号：US06882677B2
公开(公告)日：2005-04-19
申请号：US09795585
申请日：2001-02-28
申请人： Leo Dehner , Phillip David Neumiller , Richard Allen Comroe , Charles W. Bethards
发明人： Leo Dehner , Phillip David Neumiller , Richard Allen Comroe , Charles W. Bethards
IPC分类号： H04L12/28 , H04W36/08 , H04W84/12 , H04B1/69
CPC分类号： H04W36/0072
摘要： A method and apparatus for facilitating handoff from a network access point (NAP) that is arranged and constructed to provide service to a communications unit (CU) in a frequency hopped communications system. The operations that are performed are providing service between the CU and the NAP on a connection using a first frequency hopping pattern (FHP); determining that the connection is suitable for discontinuation based on RSSI or load; sending a first message including an ID for the NAP and schedule for the CU to neighboring NAPS, the message requesting assistance with the service on tho first FHP; and receiving a second message from a neighboring NAP, arranged and constructed to provide connections to CUs using a second FHP, the second message indicating that assistance can be provided by the neighboring NAP.
摘要翻译：一种用于促进从网络接入点（NAP）进行切换的方法和装置，所述网络接入点（NAP）被布置和构造为向跳频通信系统中的通信单元（CU）提供服务。执行的操作是在使用第一跳频模式（FHP）的连接上在CU和NAP之间提供服务; 确定连接适合于基于RSSI或负载的中断; 发送包括NAP的ID的第一个消息，并将CU调度到相邻的NAPS，该消息在第一个FHP上请求协助服务; 以及从相邻NAP接收第二消息，其被布置和构造为使用第二FHP提供到CU的连接，所述第二消息指示可以由所述相邻NAP提供所述协助。

3. 发明授权

US4216427A Adaptive audio compressor 失效
标题翻译：自适应音频压缩器
公开(公告)号：US4216427A
公开(公告)日：1980-08-05
申请号：US915485
申请日：1978-06-14
申请人： Charles W. Bethards
发明人： Charles W. Bethards
IPC分类号： H03G3/20 , H03G7/00 , H04B1/04 , H03B3/02
CPC分类号： H03G3/3015 , H03G7/004 , H04B2001/0408
摘要： An amplitude modulated transmitter includes an audio amplifier which, via a radio frequency (RF) power supply modulator, modulates an RF amplifier and carrier. Fluctuations in the direct current DC bias to the RF amp, such as are common in mobile applications, vary the modulation index of the transmitted signal.To minimize DC bias affects on the modulation index, the invention contemplates an audio compressor which senses both audio signal level and DC bias level and, in response thereto, controls audio signal compression to maintain the desired percent modulation. Compression is effected by changing the bias on a semiconductor device which, in turn, attenuates audio signals at the input of a fixed gain audio amplifier. A feedback path around the audio amplifier senses both DC voltage and audio signal level and produces an appropriate control signal to bias the semiconductor device, thereby altering audio compression.
摘要翻译：幅度调制发射机包括经由射频（RF）电源调制器调制RF放大器和载波的音频放大器。在RF放大器的直流DC偏置中的波动，例如在移动应用中是常见的，改变了发射信号的调制指数。为了最小化DC偏置对调制指数的影响，本发明考虑了一种音频压缩器，其感测音频信号电平和DC偏置电平，并且响应于此，控制音频信号压缩以维持期望的百分比调制。压缩是通过改变半导体器件上的偏置来进行的，这又使固定增益音频放大器的输入端的音频信号衰减。音频放大器周围的反馈路径检测直流电压和音频信号电平，并产生适当的控制信号以偏置半导体器件，从而改变音频压缩。

4. 发明授权

US5081707A Knowledge based radio 失效
标题翻译：基于知识的无线电
公开(公告)号：US5081707A
公开(公告)日：1992-01-14
申请号：US391052
申请日：1989-08-08
申请人： Eric R. Schorman , Charles W. Bethards
发明人： Eric R. Schorman , Charles W. Bethards
IPC分类号： H03G3/32 , H04B17/00
CPC分类号： H03G3/32 , Y10S706/908
摘要： A knowledge based radio that monitors changed operating parameters and environmental conditions, and that selectively varies operating parameters of the radio in response to rules. The rules can be varied over time by the radio based upon the monitored response of the user to various environmental conditions.
摘要翻译：一种基于知识的无线电，监控变化的运行参数和环境条件，并根据规则选择性地改变无线电的运行参数。基于用户对各种环境条件的监视响应，无线电装置可以随时间改变规则。

5. 发明授权

US5613092A Peripheral card having an adaptive PCMCIA compliant interface 失效
标题翻译：具有适应性PCMCIA兼容接口的外围卡
公开(公告)号：US5613092A
公开(公告)日：1997-03-18
申请号：US299383
申请日：1994-09-01
申请人： Ricardo Lim , David Russo , Barry Moss , Charles W. Bethards
发明人： Ricardo Lim , David Russo , Barry Moss , Charles W. Bethards
IPC分类号： G06F13/40 , G06F13/00 , G06F15/177
CPC分类号： G06F13/4072
摘要： A peripheral card (109) having an adaptive PCMCIA compliant interface including either an adaptive card present or card configuration function that includes a peripheral apparatus (209) arranged and constructed to operate in conjunction with a host computer (101) over a PCMCIA compliant interface, and an interface logic (205), coupled to the peripheral apparatus (209) and to a PCMCIA peripheral port (201), for interfacing the peripheral apparatus to the PCMCIA peripheral port (201), the interface logic further adaptively providing a card present signal at the PCMCIA peripheral port (201) when the peripheral apparatus (209) and the interface logic (205) expects the PCMCIA peripheral port (201) to be activated by the host computer (101) or alternatively adaptively providing configuration information pertaining to the peripheral apparatus to the host computer.
摘要翻译：具有自适应PCMCIA兼容接口的外围卡（109）包括自适应卡存在或卡配置功能，所述自适应卡存在或卡配置功能包括布置和构造为通过PCMCIA兼容接口与主计算机（101）一起操作的外围设备（209）以及耦合到所述外围设备（209）和PCMCIA外围端口（201）的用于将所述外围设备连接到所述PCMCIA外围端口（201）的接口逻辑（205），所述接口逻辑进一步自适应地提供卡存在信号当外围设备（209）和接口逻辑（205）期望PCMCIA外围端口（201）被主计算机（101）激活时，在PCMCIA外围端口（201）处，或者自适应地提供与外围设备有关的配置信息装置到主机。

6. 发明授权

US4110699A Adaptive audio compressor 失效
标题翻译：自适应音频压缩器
公开(公告)号：US4110699A
公开(公告)日：1978-08-29
申请号：US670505
申请日：1976-03-25
申请人： Charles W. Bethards
发明人： Charles W. Bethards
IPC分类号： H03C1/02 , H03G3/30 , H03G7/00 , H04B1/04 , H04B1/64 , H03B3/02 , H03K1/14
CPC分类号： H03G7/004 , H04B1/64 , H04B2001/0408
摘要： An amplitude modulated transmitter includes an audio amplifier which, via a radio frequency (RF) power supply modulator, modulates an RF amplifier and carrier. Fluctuations in the direct current DC bias to the RF amp, such as are common in mobile applications, vary the modulation index of the transmitted signal.To minimize DC bias affects on the modulation index, the invention contemplates an audio compressor which senses both audio signal level and DC bias level and, in response thereto, controls audio signal compression to maintain the desired percent modulation. Compression is effected by changing the bias on a semiconductor device which, in turn, attenuates audio signals at the input of a fixed gain audio amplifier. A feedback path around the audio amplifier senses both DC voltage and audio signal level and produces an appropriate control signal to bias the semiconductor device, thereby altering audio compression.
摘要翻译：幅度调制发射机包括经由射频（RF）电源调制器调制RF放大器和载波的音频放大器。在RF放大器的直流DC偏置中的波动，例如在移动应用中是常见的，改变了发射信号的调制指数。

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