公开(公告)号：US06819273B2

公开(公告)日：2004-11-16

申请号：US10367966

申请日：2003-02-19

申请人： Tohru Mizutani ,  Hiromi Nanba ,  Atsushi Matsuda ,  Atsushi Hitaka ,  Masashi Okubo ,  Yoshinori Yoshikawa ,  Kenichi Minobe

发明人： Tohru Mizutani ,  Hiromi Nanba ,  Atsushi Matsuda ,  Atsushi Hitaka ,  Masashi Okubo ,  Yoshinori Yoshikawa ,  Kenichi Minobe

IPC分类号： H03M110

CPC分类号： H03M1/1019 ,  H03M1/02

摘要： An integrated circuit includes an analog signal output unit which converts a digital output signal into at least one analog output signal, and outputs the at least one analog output signal, an analog signal input unit which converts at least one analog input signal received from an exterior into a digital input signal, a switch circuit which provides at least one signal path through which the at least one analog output signal is supplied from the analog signal output unit to the analog signal input unit as the at least one analog input signal, and an offset adjustment control circuit which supplies an output offset from the analog signal output unit to the analog signal input unit via the at least one signal path so as to detect the digital input signal inclusive of the output offset and an input offset, and cancels offsets of the analog signal output unit and the analog signal input unit in response to the output offset and the input offset obtained from the detected digital input signal.

摘要翻译： 集成电路包括模拟信号输出单元，其将数字输出信号转换为至少一个模拟输出信号，并输出至少一个模拟输出信号;模拟信号输入单元，其转换从外部接收的至少一个模拟输入信号 提供至少一个信号路径的开关电路，所述至少一个信号路径将所述至少一个模拟输出信号从所述模拟信号输出单元提供给所述模拟信号输入单元，作为所述至少一个模拟输入信号，以及 偏移调整控制电路，其经由所述至少一个信号路径将模拟信号输出单元的输出偏移提供给模拟信号输入单元，以检测包括输出偏移和输入偏移的数字输入信号，并且抵消 模拟信号输出单元和模拟信号输入单元，以响应于从检测到的数字输入信号获得的输出偏移和输入偏移 纳尔

公开(公告)号：US06456170B1

公开(公告)日：2002-09-24

申请号：US09538720

申请日：2000-03-30

申请人： Yuji Segawa ,  Masaru Otsuka ,  Osamu Kikuchi ,  Akira Haga ,  Yoshinori Yoshikawa

发明人： Yuji Segawa ,  Masaru Otsuka ,  Osamu Kikuchi ,  Akira Haga ,  Yoshinori Yoshikawa

IPC分类号： H03L700

CPC分类号： H03K5/082 ,  H03K3/0231 ,  H03K3/03 ,  H03K3/0322 ,  H03K5/2481 ,  H03K5/249 ,  H03K19/0027 ,  H03K2217/0018

摘要： The inverter functioning as a comparator, dummy inverter having the same electric characteristics as the inverter, and control circuit are provided. Vth detecting input voltage output from the control circuit is input into the dummy inverter, Vth detecting output voltage output from the dummy inverter is input into the control circuit, and the threshold voltage of the dummy inverter is detected. The threshold voltage of the inverter is controlled by controlling the back gate voltages of the MOS transistors of the dummy inverter and the inverter in such a manner that the threshold voltage of the dummy inverter coincide with an external reference voltage.

摘要翻译： 用作比较器的逆变器，具有与逆变器相同电特性的虚拟逆变器和控制电路。 将从控制电路输出的Vth检测输入电压输入到虚拟反相器中，从虚拟反相器输出的Vth检测输出电压输入到控制电路中，并且检测虚拟反相器的阈值电压。 通过以虚拟反相器的阈值电压与外部参考电压一致的方式控制虚拟逆变器和逆变器的MOS晶体管的背栅极电压来控制逆变器的阈值电压。

公开(公告)号：US5059890A

公开(公告)日：1991-10-22

申请号：US446885

申请日：1989-12-06

申请人： Yoshinori Yoshikawa ,  Kunihiko Gotoh

发明人： Yoshinori Yoshikawa ,  Kunihiko Gotoh

IPC分类号： G05F1/56 ,  G05F3/20 ,  G05F3/26

CPC分类号： G05F3/20

摘要： A constant current source circuit includes a current mirror circuit supplying a load circuit with an output current which is regulated on the basis of a reference current, a transistor having an emitter, a collector connected to a first power source line, and a base coupled to the current mirror circuit, and a resistor coupled between the emitter and base. The reference current passes through the resistor. A current control circuit controls a current directed to a second power source line in accordance with a bias voltage. The above current consists of the reference current and a collector current passing through the transistor. A bias circuit having a current path derives the bias voltage from a current passing from the first power source line to the second power source line through the current path.

公开(公告)号：US20140047970A1

公开(公告)日：2014-02-20

申请号：US13791335

申请日：2013-03-08

申请人： Yoshinori Yoshikawa ,  Keisuke Shingu ,  Ryuichiro Kuzuryu

发明人： Yoshinori Yoshikawa ,  Keisuke Shingu ,  Ryuichiro Kuzuryu

IPC分类号： G09B15/08

CPC分类号： G09B15/08 ,  G10H1/0016 ,  G10H7/00 ,  G10H2220/041

摘要： A piano keyboard computer includes a piano-type keyboard adjacent to a display screen. The system allows music tutorials, visualizations and other applications. A docking system allows additional devices to be placed on, adjacent to, or near the piano keyboard computer. The additional device then communicates with the piano keyboard computer to add functionality such as additional speakers, controllers, etc. The piano keyboard computer can act as a controller for other devices.

摘要翻译： 钢琴键盘电脑包括与显示屏相邻的钢琴型键盘。 该系统允许音乐教程，可视化和其他应用程序。 对接系统允许将附加设备放置在钢琴键盘计算机上，附近或附近。 然后，附加设备与钢琴键盘计算机通信以增加功能，例如附加的扬声器，控制器等。钢琴键盘计算机可以用作其它设备的控制器。

公开(公告)号：US09165476B2

公开(公告)日：2015-10-20

申请号：US13791335

申请日：2013-03-08

申请人： Yoshinori Yoshikawa ,  Keisuke Shingu ,  Ryuichiro Kuzuryu

发明人： Yoshinori Yoshikawa ,  Keisuke Shingu ,  Ryuichiro Kuzuryu

IPC分类号： G10H1/32 ,  G10H3/00 ,  G09B15/08 ,  G10H7/00

CPC分类号： G09B15/08 ,  G10H1/0016 ,  G10H7/00 ,  G10H2220/041

摘要： A piano keyboard computer includes a piano-type keyboard adjacent to a display screen. The system allows music tutorials, visualizations and other applications. A docking system allows additional devices to be placed on, adjacent to, or near the piano keyboard computer. The additional device then communicates with the piano keyboard computer to add functionality such as additional speakers, controllers, etc. The piano keyboard computer can act as a controller for other devices.

摘要翻译： 钢琴键盘电脑包括与显示屏相邻的钢琴型键盘。 该系统允许音乐教程，可视化和其他应用程序。 对接系统允许将附加设备放置在钢琴键盘计算机上，附近或附近。 然后，附加设备与钢琴键盘计算机通信以增加功能，例如附加的扬声器，控制器等。钢琴键盘计算机可以用作其它设备的控制器。