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    • 73. 发明授权
    • Internal clock generating circuitry having testing function
    • 具有测试功能的内部时钟发生电路
    • US06532560B1
    • 2003-03-11
    • US09553382
    • 2000-04-20
    • Takashi Miyake
    • Takashi Miyake
    • G01R3128
    • G01R31/2882G01R31/3016G01R31/31725G01R31/31922
    • Internal clock generating circuitry comprises a phase comparator (1) for comparing the phase of a clock signal applied thereto from outside the circuitry with that of a feedback signal fed back thereto, and for generating a voltage corresponding to the difference between the phases of those clock signals, a voltage-controlled oscillator or VCO (2) for generating a clock signal having a frequency corresponding to the voltage from the phase comparator (1), a normal clock signal generating circuit (3) for generating at least one normal clock signal used for making an internal circuit operate under normal conditions from the clock signal from the VCO (2), and for generating and feeding the feedback signal back to the phase comparator (1), a test VCO (5) for generating a clock signal having a frequency corresponding to the voltage from the phase comparator (1), a test clock signal generating circuit (6) for generating at least one test clock signal used for testing the internal circuit from the clock signal from the test VCO (5), a selector (4) for selecting either the normal clock signal or the test clock signal generated, and for furnishing the selected clock signal to the internal circuit, and a control signal generating circuit (7) for generating a control signal to stop the test VCO (5) according to an input signal applied thereto from outside the circuitry.
    • 内部时钟发生电路包括相位比较器(1),用于比较从电路外部施加到其上的时钟信号的相位与反馈给反馈信号的时钟信号的相位,并产生与这些时钟的相位之间的差相对应的电压 信号,压控振荡器或VCO(2),用于产生具有对应于来自相位比较器(1)的电压的频率的时钟信号;正常时钟信号产生电路(3),用于产生使用的至少一个正常时钟信号 用于使内部电路在来自VCO(2)的时钟信号的正常条件下工作,并且用于产生并将反馈信号馈送到相位比较器(1),用于产生时钟信号的测试VCO(5)具有 频率对应于来自相位比较器(1)的电压,测试时钟信号发生电路(6),用于产生用于测试内部电路的至少一个测试时钟信号 来自测试VCO(5)的时钟信号,用于选择正常时钟信号或所生成的测试时钟信号的选择器(4),以及用于将选择的时钟信号提供给内部电路,以及控制信号发生电路 ),用于根据从电路外部施加到其上的输入信号产生控制信号以停止测试VCO(5)。
    • 75. 发明授权
    • RBDS receiver provided with a database having broadcasting station
related information
    • RBDS接收机提供有具有广播站相关信息的数据库
    • US5898910A
    • 1999-04-27
    • US598866
    • 1996-02-09
    • Takashi MiyakeShinichi Abe
    • Takashi MiyakeShinichi Abe
    • H04B1/16H03J1/00
    • H03J1/0075H04H60/74H04H2201/13H04H40/18H04H60/27
    • This RBDS receiver comprises a database having broadcasting station related information. The receiver is provided with a read-only database memory in which broadcasting station related data have been stored respectively in association with geographical positional information, the broadcasting station related data including broadcasting station identification data, program type identification data and receptiond frequency data; a demodulator system for demodulating the RBDS data from received broadcast waves; a randomly accessible database supplementary memory; and a control system for comparing the RBDS data with the broadcasting station related data and the data stored in the supplementary memory to perform write control for writing the RBDS data into the supplementary memory if a broadcasting station indicated by the RBDS data is not coincident with any of broadcasting stations indicated by the broadcasting station related data and the data stored in the supplementary memory. According to the present invention, the database can be supplemented immediately and accurately in response to updates and revisions of the contents of actually broadcast programs. Also, the control for display and so on can be appropriately performed in accordance with the contents of actually broadcast programs.
    • 该RBDS接收机包括具有广播站相关信息的数据库。 接收机设置有只读数据库存储器,其中分别与地理位置信息相关联地存储广播站相关数据,广播站相关数据包括广播站识别数据,节目类型识别数据和接收频率数据; 解调器系统,用于从接收到的广播波解调RBDS数据; 随机访问的数据库补充内存; 以及用于将RBDS数据与广播电台相关数据和存储在补充存储器中的数据进行比较的控制系统,以便如果由RBDS数据指示的广播站与任何一个RBDS数据不一致,则执行用于将RBDS数据写入补充存储器的写入控制 由广播电台指示的广播电台相关数据和存储在补充存储器中的数据。 根据本发明,响应于实际广播节目内容的更新和修改,可以立即且准确地补充数据库。 此外,可以根据实际广播节目的内容适当地执行显示等的控制。
    • 77. 发明授权
    • Audio/video communication system and method
    • 音视频通信系统及方法
    • US5625350A
    • 1997-04-29
    • US364861
    • 1994-12-27
    • Hitoshi FukatsuTakashi MiyakeTadashi TanihiraKouichi SatoTadashi Sano
    • Hitoshi FukatsuTakashi MiyakeTadashi TanihiraKouichi SatoTadashi Sano
    • B60R16/02B60R16/03H04B1/20H04N5/44H04N5/765H04Q9/00
    • H04B1/207H04N5/765B60R16/0315H04B1/205H04N5/44
    • A communication system for e.g. an automobile including a system control unit for activating a selected audio/video device (such as an AM/FM tuner or a navigation system) in response to a request signal transmitted on a bus from a command input terminal. The system control unit generates command signals necessary to activate the selected audio/video device in response to the request signal, including command signals to de-activate any currently-operating devices. Conversely, adjustment commands (such as volume change or channel change commands) are transmitted directly (that is, unchanged by the system control unit) from the command input terminal to the selected audio/video device on the first bus line. In addition, the audio/video devices transmit reset signals whenever power is shut-off and then restored. Each reset signal includes a transmission source address corresponding to the audio/video device which transmitted the signal. The system control unit compares these transmission source addresses with a stored address corresponding to the selected audio/video device, and transmits a command signal to restart the selected audio/video device. Further, when the system control unit is turned off and then restored, the system control unit transmits a reset command to all of the audio/video devices connected to the bus.
    • 一种通信系统。 包括用于响应于在总线上从命令输入端子发送的请求信号来激活所选择的音频/视频设备(诸如AM / FM调谐器或导航系统)的系统控制单元的汽车。 系统控制单元响应于请求信号产生激活所选择的音频/视频设备所需的命令信号,包括命令信号以禁用任何当前操作的设备。 相反,调节命令(例如音量变化或频道改变命令)从命令输入终端直接发送到系统控制单元(即,系统控制单元未被更改)到第一总线上的所选音频/视频设备。 此外,每当关闭电源然后恢复时,音频/视频设备都会传输复位信号。 每个复位信号包括对应于发送信号的音频/视频设备的发送源地址。 系统控制单元将这些发送源地址与对应于所选择的音频/视频设备的存储地址进行比较,并发送命令信号以重新启动所选择的音频/视频设备。 此外,当系统控制单元关闭然后恢复时,系统控制单元向连接到总线的所有音频/视频设备发送复位命令。