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    • 21. 再颁专利
    • Radio communication apparatus and radio communication method, radio communication system, recording medium, and computer program
    • 无线电通信装置和无线电通信方法,无线电通信系统,记录介质和计算机程序
    • USRE44185E1
    • 2013-04-30
    • US12756024
    • 2010-04-07
    • Osamu HamadaHiroshi KakudaKoji NishimuraTakashi SasaiKazuya Odagiri
    • Osamu HamadaHiroshi KakudaKoji NishimuraTakashi SasaiKazuya Odagiri
    • H04W4/00
    • H04M1/6066B29C2045/1797G11B27/34
    • The present invention relates to a radio communication apparatus and a radio communications method, a radio communication system, a recording medium, and a computer program in which a response signal to an inquiry is returned to a master only when instructions to perform radio communications are issued. A CPU 51 blinks LED 56 when an inquiry signal is received, and transmits a response to the inquiry signal when a user who has referred to lighting of the LED 56 operates a connection response button 53. The connection response button 53 is operated when the user issues radio communications instructions with respect to the inquiry signal. In other words, even when wireless headphones 2 are within an area capable of radio communications with the master, only if the connection response button 53 is operated by the user, it sends to the master a response to the inquiry, and establishes connection. The present invention may be applied to a wireless storage server, wireless headphones, and audio reproduction apparatuses.
    • 无线电通信装置和无线电通信方法,无线电通信系统,记录介质和计算机程序本发明涉及无线电通信装置和无线电通信方法,无线电通信系统,记录介质和计算机程序,其中只有当执行无线电通信的指令被发出时, 。 当接收到询问信号时,CPU 51闪烁LED56,并且当参照LED 56的点亮的用户操作连接响应按钮53时,发送对查询信号的响应。连接响应按钮53在用户 发出关于查询信号的无线电通信指令。 换句话说,即使当无线耳机2在能够与主机进行无线电通信的区域内时,只有当连接响应按钮53由用户操作时,才向主机发送对查询的响应,并建立连接。 本发明可以应用于无线存储服务器,无线耳机和音频再现设备。
    • 25. 发明授权
    • Digital waveform generating apparatus
    • 数字波形发生装置
    • US4338674A
    • 1982-07-06
    • US136296
    • 1980-04-01
    • Osamu Hamada
    • Osamu Hamada
    • G04G9/00G04G9/02G04G9/06G09F9/30G09F9/40G10H7/00G10H7/06H03K3/00G10H1/00G10H1/06
    • G10H7/06
    • A digital waveform generating apparatus includes a key assignor selecting a frequency of a signal to be generated, a number-setting circuit for generating a first data word corresponding to the selected frequency, a first memory for storing said first data word, a second memory for storing a second data word, an accumulator for accumulating the first data word onto the second data word stored in the second memory, so that the second data word stored in the second memory after accumulating represents the sum of the second data word immediately prior thereto added with said first data word, a waveform memory, preferably an ROM, for storing predetermined waveform data and for generating a waveform data output signal, and a control circuit for controlling such accumulating and progressively addressing the waveform memory in accordance with the stored second data word at the time of a timing signal. Preferably, the number-setting circuit generates a plurality of the first data words corresponding to at least one corresponding frequency, the first and second memories have a plurality of channels storing the first data word and the second data words to be added with the first data words, and the control circuit operates in a time-sharing fashion. To avoid folded errors in the output signal, the waveform memory can include a plurality of data banks each storing waveform data corresponding to a predetermined portion of the frequency range of the apparatus, and the control circuit operates to select an appropriate data bank corresponding to the selected frequency.
    • 数字波形发生装置包括:键分配器,选择要生成的信号的频率;数字设定电路,用于产生与所选择的频率相对应的第一数据字,第一存储器,用于存储所述第一数据字,第二存储器, 存储第二数据字,累加器,用于将第一数据字累积到存储在第二存储器中的第二数据字上,使得在累加之后存储在第二存储器中的第二数据字表示紧接在其之前的第二数据字的和 利用所述第一数据字,存储用于存储预定波形数据并用于产生波形数据输出信号的波形存储器,优选ROM,以及控制电路,用于根据存储的第二数据字来控制这种累加和逐渐寻址波形存储器 在定时信号时。 优选地,数字设定电路产生对应于至少一个对应频率的多个第一数据字,第一和第二存储器具有存储第一数据字和第二数据字的多个通道,以与第一数据相加 字,并且控制电路以分时方式工作。 为了避免输出信号中的折叠错误,波形存储器可以包括多个数据组,每个数据组存储对应于装置的频率范围的预定部分的波形数据,并且控制电路操作以选择对应于 选定频率
    • 26. 发明授权
    • Tone generator for electrical music instrument
    • 音乐发生器用于电子乐器
    • US4179969A
    • 1979-12-25
    • US941061
    • 1978-09-11
    • Osamu Hamada
    • Osamu Hamada
    • G10H1/18G10H5/00G10H1/04
    • G10H5/002G10H1/182Y10S84/08Y10S84/20
    • In a tone generating apparatus for an electrical music instrument having an array of switches corresponding to respective keys of a keyboard and which are selectively actuable by manipulation of the respective keys, a timing signal generator, preferably including a shift register, has a repetitive operating cycle and is connected with the switches for providing timing signals in response to actuation of the latter, with each of the timing signals occurring at a time during the operating cycle which corresponds to the position of the respective actuated switch in the switch array, an exponential signal generator provides an exponential signal in synchronism with the operating cycle of the timing signal generator, a sample and hold circuit receives the exponential signal and is operative to sample and hold a value of the exponential signal in dependence on the time of occurrence of a timing signal in the operating cycle, and variable frequency oscillator controlled in accordance with the value of the exponential signal which is sampled and held for providing an output oscillation having a frequency determined by a selectively actuated one of the switches.
    • 在具有对应于键盘的各个键的开关阵列的电子音乐乐器的乐音产生装置中,可以通过操纵各个按键而选择性地启动,具有重复的操作周期的定时信号发生器 并且与开关连接,以响应于后者的致动而提供定时信号,其中每个定时信号在操作周期期间发生,其对应于开关阵列中相应的致动开关的位置,指数信号 发生器与定时信号发生器的操作周期同步地提供指数信号,采样和保持电路接收指数信号,并且可操作以根据定时信号的出现时间采样和保持指数信号的值 在运行周期内,并根据变频器控制 用于提供具有由选择性致动的开关之一确定的频率的输出振荡的采样和保持的指数信号的值。
    • 28. 发明授权
    • Pulse width modulated signal amplifier
    • 脉宽调制信号放大器
    • US3956716A
    • 1976-05-11
    • US562144
    • 1975-03-26
    • Osamu Hamada
    • Osamu Hamada
    • H04R3/00H02M5/16H03F3/217H03K11/00H04R3/06H03K7/08
    • H03F3/217H03K11/00H04R3/06
    • A pulse width modulated signal amplifier including a signal input circuit, a clock pulse generating circuit, a pulse phase modulating circuit and a pair of pulse transformers. The pulse phase modulating circuit is supplied with the output signal of the signal input circuit and the clock pulse signal in such a manner as to produce a pair of pulse signals having a phase difference which is proportional to the output signal level of the signal input circuit. Each primary coil of the transformer is supplied with a pair of pulse signals, and the secondary coils are connected so as to add and subtract the pulse signals respectively. A rectifying circuit is supplied with the output signals from the secondary coils so as to produce the finally constituted pulse width modulated signals where the width of the pulse is proportional to the output signal level of the signal input circuit. At the same instance it is applied to a load through a low pass filter.
    • 一种脉宽调制信号放大器,包括信号输入电路,时钟脉冲发生电路,脉冲相位调制电路和一对脉冲变压器。 脉冲相位调制电路以信号输入电路的输出信号和时钟脉冲信号的方式被提供,以产生一对具有与信号输入电路的输出信号电平成比例的相位差的脉冲信号 。 变压器的每个初级线圈被提供有一对脉冲信号,并且次级线圈被连接以分别加和减去脉冲信号。 整流电路被提供有来自次级线圈的输出信号,以产生最终构成的脉冲宽度调制信号,其中脉冲宽度与信号输入电路的输出信号电平成比例。 在相同的情况下,它通过低通滤波器应用于负载。