公开(公告)号：US5029236A

公开(公告)日：1991-07-02

申请号：US516187

申请日：1990-04-30

申请人： Hiroshi Yasuda ,  Satoshi Yokoya ,  Nobutaka Takao ,  Akira Todo

发明人： Hiroshi Yasuda ,  Satoshi Yokoya ,  Nobutaka Takao ,  Akira Todo

IPC分类号： H04B1/036

CPC分类号： H04B1/036

摘要： A radiotelephone apparatus employed as a so-called portable telephone or a car telephone includes an outer casing, a chassis base plate provided in the outer casing and mounting an electronic circuit section containing above all a heated element or elements, and a fan containing section containing a heat sink and a fan device connected in a heat conductive relation with the chassis base plate. The electronic circuit section and the fan containing section within the outer casing are isolated from each other by an air current interrupting device for air cooling heated electronic components while preventing dust and dirt in the air from flowing into portions in the casing other than the fan containing section. An air intake window is provided in the vicinity of mechanically operating portion of the apparatus for self cleaning dust and dirt sucked by the air flow through the normal telephone operation.

公开(公告)号：US5020138A

公开(公告)日：1991-05-28

申请号：US500507

申请日：1990-03-28

申请人： Hiroshi Yasuda ,  Satoshi Yokoya ,  Nobutaka Takao

发明人： Hiroshi Yasuda ,  Satoshi Yokoya ,  Nobutaka Takao

IPC分类号： H04B1/036 ,  H04Q7/32

CPC分类号： H04B1/036

摘要： A radio communication apparatus has a modulating portion for modulating a carrier with a signal to be transmitting so as to produce a transmission signal. A signal transmitting portion causes the transmissible signal to be subjected to power amplification. The transmissible signal is transmitted after having been subjected to power amplification. A cooling device is provided for cooling by force a heat source contained in the signal transmitting portion in response to a condition detector for detecting a temperature condition or an operating condition of the signal transmitting portion. An operation control unit is operative to cause the cooling device to be in operation when a particular temperature condition in which temperature of the signal transmitting portion has exceeded a predetermined value or a particular operating condition in which the signal transmitting portion has been in a predetermined state is detected by the condition dectector.

公开(公告)号：US5036301A

公开(公告)日：1991-07-30

申请号：US500481

申请日：1990-03-28

申请人： Nobutaka Takao ,  Satoshi Yokoya ,  Kotaro Takagi

发明人： Nobutaka Takao ,  Satoshi Yokoya ,  Kotaro Takagi

IPC分类号： H03H1/00 ,  H05K1/02 ,  H05K3/34

CPC分类号： H05K1/0243 ,  H03H1/00 ,  H05K2201/0715 ,  H05K2201/09336 ,  H05K2201/09618 ,  H05K2201/09809 ,  H05K2201/1006 ,  H05K2201/10356 ,  H05K2201/10371 ,  H05K2201/1053 ,  H05K2201/10969 ,  H05K3/3447

摘要： A filter apparatus comprised of a multi-layer printed circuit board has a shielded filter with input and output terminals protruding from the circuit board, when the filter is mounted on the printed circuit board. Two insulating substrates form the printed circuit board, and a connective conductive pattern is formed on an inner surface of one of the substrates that faces the other substrate. Conductive layers are formed on respective outer surfaces of the substrate opposing the connection conductive pattern, wherein at least one of the input and output terminals of the filter is connected to the connective conductive pattern and the conductive layers are grounded, thereby shielding the connective conductive pattern.

公开(公告)号：US5334945A

公开(公告)日：1994-08-02

申请号：US21238

申请日：1993-02-23

申请人： Satoshi Yokoya ,  Nobutaka Takao

发明人： Satoshi Yokoya ,  Nobutaka Takao

IPC分类号： H03G3/20

CPC分类号： H03G3/3042

摘要： A power control circuit for use in radio transmitters such as portable telephone sets includes a power amplifier for amplifying the power of a transmission signal to obtain an output signal; control circuits for controlling the amplitude of the signal output by the power amplifier; a limiter for partially limiting the amplitude of the signal from the power amplifier in order to obtain a limited signal; a multiplication circuit for multiplying the limited signal from the limiter and part of the signal from the power amplifier in order to acquire a multiplied signal; a low-pass filter for extracting a DC component of the multiplied signal from the multiplication circuit; and a comparison circuit for comparing the DC component from the low-pass filter with a reference voltage in order to obtain a comparison output. The comparison output from the comparison circuit is supplied to the control circuits, and the control circuits control the level of the signal from the power amplifier so that the DC component from the low-pass filter will become equal to the reference voltage regardless of temperature change.

摘要翻译： 用于诸如便携式电话机的无线电发射机中的功率控制电路包括用于放大发射信号的功率以获得输出信号的功率放大器; 用于控制由功率放大器输出的信号的幅度的控制电路; 限制器，用于部分地限制来自功率放大器的信号的幅度，以便获得有限的信号; 乘法电路，用于将来自限幅器的限制信号和来自功率放大器的信号的一部分相乘以获得相乘的信号; 低通滤波器，用于从乘法电路中提取相乘信号的直流分量; 以及用于比较来自低通滤波器的DC分量与参考电压的比较电路，以便获得比较输出。 来自比较电路的比较输出被提供给控制电路，并且控制电路控制来自功率放大器的信号的电平，使得来自低通滤波器的DC分量将变得等于参考电压，而与温度变化无关 。

公开(公告)号：US5175875A

公开(公告)日：1992-12-29

申请号：US502680

申请日：1990-04-02

申请人： Satoshi Yokoya ,  Takayuki Inoue ,  Nobutaka Takao ,  Noboru Someno

发明人： Satoshi Yokoya ,  Takayuki Inoue ,  Nobutaka Takao ,  Noboru Someno

IPC分类号： H04B7/26

CPC分类号： H04B7/26

摘要： A radio communication apparatus comprising a modulating portion for modulating a carrier with a signal to transmit so as to produce a transmissible signal; a signal transmitting portion for transmitting the transmissible signal; a level adjusting portion for adjusting a level of the signal to transmit or a level of a control signal used for controlling the transmissible signal in accordance with digital control data supplied to the level adjusting portions; a memory for storing digital adjusting data; and a control unit for reading the digital adjusting data from the memory and supplying the level adjusting portion with the digital adjusting data read from the memory or modified digital adjusting data obtained based on the digital adjusting data read from the memory as the digital control data.

公开(公告)号：US4700377A

公开(公告)日：1987-10-13

申请号：US784472

申请日：1985-10-04

申请人： Hiroshi Yasuda ,  Kanji Ohnishi ,  Satoshi Yokoya ,  Jon Strom

发明人： Hiroshi Yasuda ,  Kanji Ohnishi ,  Satoshi Yokoya ,  Jon Strom

IPC分类号： H04M1/56 ,  G09G1/00 ,  H04M1/30

CPC分类号： H04M1/56

摘要： An electronic apparatus includes a plurality of selectively actuable selection devices for causing the apparatus to perform a plurality of distinct operations. A first actuation of a selection device establishes a first condition to cause the apparatus to generate an externally detectable identification such as by voice synthesis of the selected operation, and a second actuation of the selection device establishes a second condition to cause the apparatus to perform the selected operation and identify the operation on a display. In a preferred embodiment, the selection devices are each a push button actuable from a rest position to a first depressed position to establish the first condition by actuating a first switch, and thereafter actuable from the first depressed position to a second depressed position to establish the second condition by actuating a second switch.

摘要翻译： 电子设备包括多个可选择性致动的选择装置，用于使装置执行多个不同的操作。 选择装置的第一动作建立了第一条件，以使装置产生例如通过语音合成选择的操作的外部可检测的识别，并且选择装置的第二动作建立第二条件以使装置执行 选择操作并识别显示器上的操作。 在优选实施例中，选择装置各自是从静止位置致动的第一按压位置，以通过致动第一开关来建立第一状态，并且此后可从第一按压位置致动到第二按压位置，以建立 通过启动第二开关来执行第二条件。

公开(公告)号：US5524287A

公开(公告)日：1996-06-04

申请号：US242337

申请日：1994-05-13

申请人： Satoshi Yokoya ,  Hiroshi Yasuda ,  Ryuji Oki ,  Nobuhiko Watanabe

发明人： Satoshi Yokoya ,  Hiroshi Yasuda ,  Ryuji Oki ,  Nobuhiko Watanabe

IPC分类号： H04B1/38 ,  H04B7/005 ,  H04B7/26 ,  H01Q11/12 ,  H04B1/04

CPC分类号： H04W52/52

摘要： A radio communication apparatus comprises a transmitting circuit, a receiving circuit, an amplifier, a control circuit and a detecting circuit. The receiving circuit receives a signal from an opposite station such as a base station. The transmitting circuit transmits a signal to the opposite station. The amplifier amplifies the signal to be transmitted from the transmitting circuit. The control circuit controls the level of the transmission signal outputted from the amplifier. The detecting circuit detects the reception state in response to the reception level or the error rate of the signal transmitted from the opposite station. And the control circuit selectively switches, in response to the detection signal obtained from the detecting circuit, the output level of the transmission signal obtained via the amplifier from a high-level mode to a low-level mode when the reception state of the signal transmitted from the opposite station satisfies a preset value.

摘要翻译： 无线通信装置包括发送电路，接收电路，放大器，控制电路和检测电路。 接收电路接收来自诸如基站的对方站的信号。 发送电路向对方发送信号。 放大器放大要从发送电路发送的信号。 控制电路控制从放大器输出的发送信号的电平。 检测电路响应于从相对站发送的信号的接收电平或错误率来检测接收状态。 并且，当发送的信号的接收状态被发送时，控制电路响应于从检测电路获得的检测信号选择性地将经由放大器获得的发送信号的输出电平从高电平模式切换到低电平模式 从相对站满足预设值。

公开(公告)号：US20110283071A1

公开(公告)日：2011-11-17

申请号：US12815891

申请日：2010-06-15

申请人： Satoshi Yokoya ,  Philippe Gentric ,  Alain Michel Breton ,  Steven Charles Goss ,  Steven Richard Jahnke

发明人： Satoshi Yokoya ,  Philippe Gentric ,  Alain Michel Breton ,  Steven Charles Goss ,  Steven Richard Jahnke

IPC分类号： G06F12/00 ,  G06F1/32 ,  G06F12/16

CPC分类号： G06F1/3275 ,  G06F12/023 ,  G06F12/06 ,  G06F12/08 ,  G06F2212/1028 ,  Y02D10/13 ,  Y02D10/14

摘要： In a digital system with a processor coupled to a paged memory system, the memory system may be dynamically configured using a memory compaction manager in order to allow portions of the memory to be placed in a low power mode. As applications are executed by the processor, program instructions are copied from a non-volatile memory coupled to the processor into pages of the paged memory system under control of an operating system. Pages in the paged memory system that are not being used by the processor are periodically identified. The paged memory system is compacted by copying pages that are being used by the processor from a second region of the paged memory into a first region of the paged memory. The second region may be placed in a low power mode when it contains no pages that are being used by the processor.

摘要翻译： 在具有耦合到分页存储器系统的处理器的数字系统中，可以使用存储器压缩管理器动态地配置存储器系统，以便允许存储器的部分被置于低功率模式。 当处理器执行应用时，在操作系统的控制下，将程序指令从耦合到处理器的非易失性存储器复制到寻呼存储器系统的页面。 周期性地识别分页存储器系统中未被处理器使用的页面。 通过将处理器使用的页面从分页存储器的第二区域复制到分页存储器的第一区域来压缩分页存储器系统。 当第二区域不包含处理器正在使用的页面时，第二区域可以被置于低功率模式。

公开(公告)号：US5068626A

公开(公告)日：1991-11-26

申请号：US538187

申请日：1990-06-13

申请人： Kotaro Takagi ,  Satoshi Yokoya

发明人： Kotaro Takagi ,  Satoshi Yokoya

IPC分类号： H03L7/093 ,  H03L7/089 ,  H03L7/107

CPC分类号： H03L7/0898 ,  H03L7/0895 ,  H03L7/107

摘要： A charge pump circuit for charging a capacitor in response to a phase difference between first and second input signals comprises a constant current source for providing a first constant current; a constant current sink for absorbing a second constant current; a circuit for substantially equalizing the magnitudes of the first and second constant currents; and a switching circuit for providing the first constant current and the second constant current flowing in opposed directions to the capacitor through an output terminal of the charge pump circuit in response to the phase difference between the first and second input signals to produce a voltage level across the capacitor corresponding to the phase difference. In a phase locked loop system employing such a charge pump circuit, a phase comparator produces a phase difference signal for controlling the provision of the first and second constant currents by the switching circuit to the capacitor. The capacitor acts as a loop filter supplying the voltage thereacross as a control voltage to a voltage controlled oscillator of the phase locked loop system.

公开(公告)号：US4535470A

公开(公告)日：1985-08-13

申请号：US492269

申请日：1983-05-06

申请人： Satoshi Yokoya ,  Norio Numata ,  Ikuo Shimizu

发明人： Satoshi Yokoya ,  Norio Numata ,  Ikuo Shimizu

IPC分类号： H04H1/00 ,  H04H40/36 ,  H04H5/00

CPC分类号： H04H20/49

摘要： Decoding or demodulating circuitry can produce stereo right channel and left channel signals from AM stereo signals that have been coded according to any of the well known methods. A stereo sum signal made up of the left and right channel stereo signals added together, and a stereo difference signal made up of the difference between the stereo left and right channel signals are developed and fed to a matrix to interconnect these signals to extract or separate the left and right channel stereo signals. At least one of the known methods of stereo coding requires phase shifting of these two developed signals and suitable phase shift circuitry, along with a switching circuit provides the matrix with the appropriate signals when that method of stereo coding is employed at the broadcast side. The stereo sum signal is developed using envelope detection and the stereo difference signal is developed using synchronous detection, with the synchronous detector employing signals developed in the envelope detection process. When the stereo broadcasting wave belongs to the other coding systems, the stereo sum and difference signals are respectively supplied directly to the matrix circuit through the switches.

摘要翻译： 解码或解调电路可以产生根据任何已知方法编码的AM立体声信号的立体声右声道和左声道信号。 将由左和右声道立体声信号相加的立体声和信号和由立体声左右声道信号之间的差组成的立体声差分信号被显影并馈送到矩阵以互连这些信号以提取或分离 左右声道立体声信号。 已知的立体声编码方法中的至少一种需要这两个展开的信号和合适的相移电路的相移，连同开关电路在广播侧采用立体声编码的方法时向矩阵提供适当的信号。 使用包络检测开发立体声和信号，并且使用同步检测开发立体声差分信号，同步检波器采用在包络检测过程中开发的信号。 当立体声广播波属于其他编码系统时，立体声和差分信号通过开关分别直接提供给矩阵电路。