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1. 发明授权

US5875245A High voltage detection circuit, bell signal detection circuit and non-ringing reception detection circuit 失效
标题翻译：高电压检测电路，振铃信号检测电路和非振铃接收检测电路
公开(公告)号：US5875245A
公开(公告)日：1999-02-23
申请号：US891104
申请日：1997-07-10
申请人： Tokio Miyasita , Tokuo Nakamura , Toshihiko Kotaka
发明人： Tokio Miyasita , Tokuo Nakamura , Toshihiko Kotaka
IPC分类号： H04M1/00 , H04M3/30 , H04M11/00 , H04M19/04 , G08B21/00
CPC分类号： H04M3/30 , H04M19/04 , H04M19/045
摘要： In a high voltage detection circuit, a high voltage detection portion 10 constituted with, for instance, two constant voltage circuits 10a and 10c and a current mirror portion 10b, a strobe input 20 and an output communication device 30 are provided. This high voltage detection circuit outputs a high voltage detection signal S30 if an input voltage Vin, which is equal to or greater than a voltage value set by the constant voltage circuits 10a and 10c is supplied while a strobe control signal ST is provided. When high voltage detection on telephone lines is performed by such a high voltage detection circuit by inputting the results of the detection of a polarity inversion at telephone lines as a strobe control signal ST, only reception of bell signal can be detected. In addition, by resetting the results of polarity inversion detection using the results of high voltage detection, it is possible to identify a non-ringing reception that is not accompanied by a bell signal.
摘要翻译：在高电压检测电路中，设置例如由两个恒压电路10a，10c和电流镜部分10b构成的高电压检测部分10，选通输入20和输出通信装置30。如果在提供选通控制信号ST的同时提供等于或大于由恒压电路10a和10c设置的电压值的输入电压Vin，则该高电压检测电路输出高电压检测信号S30。当通过在电话线上输入极性反转的检测结果作为选通控制信号ST而通过这样的高电压检测电路进行电话线路的高电压检测时，只能检测到振铃信号的接收。此外，通过使用高电压检测的结果重置极性反转检测的结果，可以识别不伴随振铃信号的非振铃接收。

2. 发明申请

US20070238432A1 Variable gain amplifier, and am-modulated signal reception circuit and detection circuit 有权
标题翻译：可变增益放大器和am调制信号接收电路和检测电路
公开(公告)号：US20070238432A1
公开(公告)日：2007-10-11
申请号：US11806873
申请日：2007-06-05
申请人： Tokio Miyasita , Junichi Yanagihara , Takashi Taya
发明人： Tokio Miyasita , Junichi Yanagihara , Takashi Taya
IPC分类号： H04B7/00
CPC分类号： H03F3/45197 , H03F2203/45362 , H03F2203/45492 , H03G1/0023
摘要： In order to provide a variable gain amplifier of enhanced linearity and wide variable gain range, an AM-modulated signal reception circuit in which the noise of an input portion is reduced so as to improve the follow-up characteristic of an AGC circuit, and an AM-modulated signal detection circuit which produces an output precisely corresponding to a peak value envelope, the variable gain amplifier comprises a differential input amplifier which includes transistors T1 and T2 (in FIG. 8) constituting a differential pair, and a constant current circuit Is operating as an absorption current circuit of the transistors T1 and T2, and a variable impedance which is connected between the sources of the respective transistors T1 and T2, wherein the gain of the differential input amplifier is made variable by variably controlling the value of the variable impedance.
摘要翻译：为了提供具有增强的线性度和宽可变增益范围的可变增益放大器，AM调制信号接收电路，其中输入部分的噪声被减小以便提高AGC电路的跟踪特性，以及 AM调制信号检测电路，其产生精确对应于峰值包络的输出，可变增益放大器包括差分输入放大器，其包括构成差分对的晶体管T 1和T 2（在图8中）和恒定电流电路用作晶体管T 1和T 2的吸收电流电路，以及连接在各个晶体管T 1和T 2的源极之间的可变阻抗，其中差分输入放大器的增益可变地变化控制可变阻抗的值。

3. 发明授权

US06279139B1 Transmission system 失效
标题翻译：传输系统
公开(公告)号：US06279139B1
公开(公告)日：2001-08-21
申请号：US09218456
申请日：1998-12-22
申请人： Tokio Miyasita
发明人： Tokio Miyasita
IPC分类号： G06F1100
CPC分类号： H04L1/0063 , H04L1/0041 , H04L1/0045 , H04L1/16
摘要： The first operation means of a master communication device computes a parity bit of main data. The parity bit and the main data are transmitted to a slave communication device. The second operation means of the slave communication device performs parity check of the main data using this parity bit. The third operation means computes a parity bit of a data constellation comprising a signal for indicating the result of the parity check and the main data to be transmitted to the master communication device. This parity bit is transmitted to the master communication device along with the main data. The fourth operation means of the master communication device performs parity check of the main data using this parity bit. If the result of parity check by the second operation means indicates generation of an error, the result of parity check by the fourth operation means always indicates generation of an error.
摘要翻译：主通信设备的第一操作装置计算主数据的奇偶校验位。奇偶校验位和主数据被发送到从通信设备。从属通信装置的第二操作装置使用该奇偶校验位来执行主数据的奇偶校验。第三操作装置计算包括用于指示奇偶校验的结果的信号和要发送到主通信设备的主数据的数据星座的奇偶校验位。该校验位与主数据一起发送到主通信设备。主通信装置的第四操作装置使用该奇偶校验位来执行主数据的奇偶校验。如果第二操作装置的奇偶校验结果表示产生错误，则第四操作装置的奇偶校验结果总是指示产生错误。

4. 发明授权

US07761071B2 Variable gain amplifier, and AM-modulated signal reception circuit and detection circuit 有权
标题翻译：可变增益放大器，AM调制信号接收电路和检测电路
公开(公告)号：US07761071B2
公开(公告)日：2010-07-20
申请号：US11806873
申请日：2007-06-05
申请人： Tokio Miyasita , Junichi Yanagihara , Takashi Taya
发明人： Tokio Miyasita , Junichi Yanagihara , Takashi Taya
IPC分类号： H04B7/00
CPC分类号： H03F3/45197 , H03F2203/45362 , H03F2203/45492 , H03G1/0023
摘要： In order to provide a variable gain amplifier of enhanced linearity and wide variable gain range, an AM-modulated signal reception circuit in which the noise of an input portion is reduced so as to improve the follow-up characteristic of an AGC circuit, and an AM-modulated signal detection circuit which produces an output precisely corresponding to a peak value envelope, the variable gain amplifier comprises a differential input amplifier which includes transistors T1 and T2 (in FIG. 8) constituting a differential pair, and a constant current circuit Is operating as an absorption current circuit of the transistors T1 and T2, and a variable impedance which is connected between the sources of the respective transistors T1 and T2, wherein the gain of the differential input amplifier is made variable by variably controlling the value of the variable impedance.
摘要翻译：为了提供具有增强的线性度和宽可变增益范围的可变增益放大器，AM调制信号接收电路，其中输入部分的噪声被减小以便提高AGC电路的跟踪特性，以及 AM调制信号检测电路，其产生精确对应于峰值包络的输出，可变增益放大器包括差分输入放大器，其包括构成差分对的晶体管T1和T2（图8），恒流电路Is 作为晶体管T1和T2的吸收电流电路，以及连接在各个晶体管T1和T2的源极之间的可变阻抗，其中差分输入放大器的增益通过可变地控制变量的值而变化阻抗。

5. 发明授权

US07126419B2 Analog summing and differencing circuit, optical receiving circuit, optical transmitting circuit, automatic gain control amplifier, automatic frequency compensation amplifier, and limiting amplifier 失效
公开(公告)号：US07126419B2
公开(公告)日：2006-10-24
申请号：US10339457
申请日：2003-01-10
申请人： Tokio Miyasita
发明人： Tokio Miyasita
IPC分类号： H03F3/45
CPC分类号： H03F3/45085 , H03F3/45475 , H03F2203/45362 , H03F2203/45684
摘要： An analog circuit includes a pair of peak-hold circuits that generate peak signals indicating the peak values of a differential pair of input signals, a first differencing circuit such as a transconductance amplifier that takes the difference between the input signal values, a second differencing circuit such as a transconductance amplifier that takes the difference between the two peak signal values, and a combining circuit such as a resistor circuit that additively combines the outputs of the differencing circuits in such a way as to compensate for direct-current offset in the input signals. Advantages of this circuit structure include reduced power consumption and simplified implementation in an integrated circuit. Low pass filters, capacitor discharging circuits, and unbalanced circuit elements can be used to obtain further advantages.

6. 发明授权

US06891900B2 Demodulating circuit and optical receiving circuit 失效
标题翻译：解调电路和光接收电路
公开(公告)号：US06891900B2
公开(公告)日：2005-05-10
申请号：US10721550
申请日：2003-11-26
申请人： Tokio Miyasita , Sunao Mizunaga
发明人： Tokio Miyasita , Sunao Mizunaga
IPC分类号： H04B10/07 , H04B10/2507 , H04B10/516 , H04B10/524 , H04B10/54 , H04B10/564 , H04B10/58 , H04B10/61 , H04L25/03 , H04L25/06 , H04L27/04
CPC分类号： H04L25/062
摘要： A demodulating circuit includes a differentiating circuit that outputs a differentiated signal indicating voltage changes at rising and falling edges of a received pulse signal, and a hysteresis comparator that compares the differentiated signal with upper and lower threshold voltages, thereby generating a demodulated logic-level signal. The differentiating circuit can rapidly track variations in the direct-current offset of the received pulse signal. Positive feedback can enable the hysteresis comparator to maintain the correct output logic level during runs of 0's or 1's of arbitrary length in the received pulse signal. The demodulating circuit consumes comparatively little power, and is particularly useful for receiving signals transmitted in bursts.
摘要翻译：解调电路包括：微分电路，输出表示接收到的脉冲信号的上升沿和下降沿的电压变化的微分信号;以及滞后比较器，其将微分信号与上限阈值电压和下限阈值电压进行比较，从而产生解调的逻辑电平信号。微分电路可以快速跟踪接收到的脉冲信号的直流偏移的变化。正反馈可以使迟滞比较器在接收到的脉冲信号中的0或1任意长度的运行期间保持正确的输出逻辑电平。解调电路消耗较少的功率，对于接收以突发方式发射的信号特别有用。

7. 发明授权

US07239814B2 Driving apparatus of a light-emitting device 失效
标题翻译：发光装置的驱动装置
公开(公告)号：US07239814B2
公开(公告)日：2007-07-03
申请号：US10773336
申请日：2004-02-09
申请人： Tokio Miyasita
发明人： Tokio Miyasita
IPC分类号： H04B10/12
CPC分类号： H03K5/003 , H03K5/082
摘要： A first peak hold circuit holds a peak potential of a positive phase voltage signal output from a differential output amplifier, and a second peak hold circuit holds a peak potential of a negative phase voltage signal output from the differential output amplifier. An adding circuit adds an output signal of the first peak hold circuit and an output signal of the second peak hold circuit. A differential input amplifier amplifies and outputs a voltage difference between a reference voltage and an addition result voltage signal of the adding circuit. A current output circuit outputs a DC current based on an output voltage of the differential input amplifier. A current switch circuit converts a DC current to a pulse current so as to supply the pulse current to a laser diode.
摘要翻译：第一峰值保持电路保持从差分输出放大器输出的正相电压信号的峰值电位，第二峰值保持电路保持从差分输出放大器输出的负相电压信号的峰值电位。加法电路将第一峰值保持电路的输出信号和第二峰值保持电路的输出信号相加。差分输入放大器放大并输出加法电路的参考电压和相加结果电压信号之间的电压差。电流输出电路基于差分输入放大器的输出电压输出直流电流。电流开关电路将DC电流转换成脉冲电流，以将脉冲电流提供给激光二极管。

8. 发明申请

US20050025259A1 Driving apparatus of a light-emitting device 失效
标题翻译：发光装置的驱动装置
公开(公告)号：US20050025259A1
公开(公告)日：2005-02-03
申请号：US10773336
申请日：2004-02-09
申请人： Tokio Miyasita
发明人： Tokio Miyasita
IPC分类号： H01S5/062 , H03K5/003 , H03K5/08 , H03K5/153
CPC分类号： H03K5/003 , H03K5/082
摘要： A first peak hold circuit holds a peak potential of a positive phase voltage signal output from a differential output amplifier, and a second peak hold circuit holds a peak potential of a negative phase voltage signal output from the differential output amplifier. An adding circuit adds an output signal of the first peak hold circuit and an output signal of the second peak hold circuit. A differential input amplifier amplifies and outputs a voltage difference between a reference voltage and an addition result voltage signal of the adding circuit. A current output circuit outputs a DC current based on an output voltage of the differential input amplifier. A current switch circuit converts a DC current to a pulse current so as to supply the pulse current to a laser diode.
摘要翻译：第一峰值保持电路保持从差分输出放大器输出的正相电压信号的峰值电位，第二峰值保持电路保持从差分输出放大器输出的负相电压信号的峰值电位。加法电路将第一峰值保持电路的输出信号和第二峰值保持电路的输出信号相加。差分输入放大器放大并输出加法电路的参考电压和相加结果电压信号之间的电压差。电流输出电路基于差分输入放大器的输出电压输出直流电流。电流开关电路将DC电流转换成脉冲电流，以将脉冲电流提供给激光二极管。

9. 发明授权

US6023357A Method for power saving in optical communication apparatus, optical communication apparatus and method for using thereof, and optical communication system 失效
标题翻译：光通信装置中的省电方法，光通信装置及其使用方法以及光通信系统
公开(公告)号：US6023357A
公开(公告)日：2000-02-08
申请号：US907055
申请日：1997-08-06
申请人： Tokio Miyasita
发明人： Tokio Miyasita
IPC分类号： H04B10/60 , H04B10/07 , H04B10/40 , H04B10/50 , H04B10/80 , H04B10/06 , H04B10/00
CPC分类号： H04B10/806
摘要： An optical communication apparatus having a light receiving element 11 for receiving optical signals including an optical signal calling for communication start and an optical communication circuit 13 which includes an amplifier circuit amplifying the photocurrent generated by the light receiving element 11, performs predetermined processing necessary for the optical communication, and outputs a communication terminating signal upon termination of the optical communication, wherein there is provided a first circuit 15 capable of always supplying a bias voltage to the light receiving element 11, turning off a power source 29 for the optical communication circuit by making use of the communication terminating signal when it is outputted, and turning on the power source by making use of the photocurrent Ip generated by the light receiving element when the light receiving element receives the optical signal calling for communication start, whereby the power saving in the standby state can be made more effective comparing with the prior art apparatus.
摘要翻译：一种光通信装置，具有用于接收光信号的光接收元件11，该信号包括呼叫通信开始的光信号，以及光通信电路13，其包括放大由光接收元件11产生的光电流的放大电路，光通信，并且在光通信终止时输出通信终端信号，其中提供了能够总是向光接收元件11提供偏置电压的第一电路15，通过以下方式关闭用于光通信电路的电源29：在输出时利用通信终端信号，并且当光接收元件接收到呼叫通信开始的光信号时，利用由光接收元件产生的光电流Ip来接通电源，从而节省待机状态可以与现有技术的装置相比更有效。

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