公开(公告)号：WO2006046013A1

公开(公告)日：2006-05-04

申请号：PCT/GB2005/004072

申请日：2005-10-21

Applicant: BOOKHAM TECHNOLOGY PLC ,  YAO, Jianguo ,  SPOKES, David ,  FRIER, Alistair ,  BORLEY, Steven

Inventor： YAO, Jianguo ,  SPOKES, David ,  FRIER, Alistair ,  BORLEY, Steven

IPC: H04B10/158 ,  H04B10/08

CPC classification number: H04B10/07 ,  G01J1/44 ,  H03F3/08 ,  H04B10/674

Abstract: An optical detector including an avalanche photodiode (APD) and protection circuitry for protecting the APD from excessive power dissipation therewithin, wherein the protection circuitry includes a switching element connected in parallel with the APD, which switching element is switched from a high resistance state to a low resistance state if the level of current through the APD exceeds a predetermined level, and wherein switching back of the switching element to the high resistance state is dependent on a reset signal from a controller. An optical detector including an avalanche photodiode (APD), and protection circuitry for protecting the APD from excessive power dissipation therewithin by switching the APD to a relatively low voltage power supply if the .level of current through the APD exceeds a predetermined level, and wherein switching back of the APD to a higher voltage power supply is dependent on a reset signal from a controller.

Abstract translation: 一种光学检测器，包括雪崩光电二极管（APD）和保护电路，用于保护APD免于其中的功率耗散，其中保护电路包括与APD并联连接的开关元件，该开关元件从高电阻状态切换到 如果通过APD的电流的电平超过预定电平，并且其中将开关元件切换回高电阻状态的低电阻状态取决于来自控制器的复位信号。 一种包括雪崩光电二极管（APD）的光检测器，以及保护电路，用于通过如果通过APD的电流的电平超过预定电平，则通过将APD切换到相对低电压的电源来保护APD免于过度的功率消耗，并且其中 将APD切换回更高电压电源取决于来自控制器的复位信号。

公开(公告)号：WO2013012732A2

公开(公告)日：2013-01-24

申请号：PCT/US2012046700

申请日：2012-07-13

Applicant: PIXTRONIX INC ,  LEWIS STEPHEN R ,  ENGLISH STEPHEN ,  YAO JIANGUO ,  DEROO JOHN ,  BARTON ROGER W

Inventor： LEWIS STEPHEN R ,  ENGLISH STEPHEN ,  YAO JIANGUO ,  DEROO JOHN ,  BARTON ROGER W

IPC: G09G3/34 ,  G02B26/04

CPC classification number: G02B26/02 ,  G02B26/005 ,  G02B26/023 ,  G09G3/3433 ,  G09G3/3466 ,  G09G2300/0465 ,  G09G2300/0473 ,  G09G2300/0838 ,  G09G2300/0842 ,  G09G2300/0857 ,  G09G2300/0866 ,  G09G2300/0876 ,  G09G2310/063

Abstract: A display apparatus includes an array of light modulators. Each light modulator has a first actuator configured to drive the light modulator into a first state and a second actuator configured to drive the light modulator into a second state. The display apparatus also includes a control matrix including, for each light modulator in the array, a single actuation voltage interconnect. The actuation voltage interconnect is configured to apply a first drive voltage to the first actuator of the light modulator and apply a second drive voltage to the second actuator of the light modulator. In addition, the actuation voltage interconnect is configured to control application of a data voltage to a latch circuit to control the application of the first and second drive voltages to the first and second actuators.

Abstract translation: 显示设备包括光调制器阵列。 每个光调制器具有配置成将光调制器驱动到第一状态的第一致动器和配置成将光调制器驱动到第二状态的第二致动器。 显示设备还包括控制矩阵，该阵列包括针对阵列中的每个光调制器的单个致动电压互连。 致动电压互连配置为向光调制器的第一致动器施加第一驱动电压并向光调制器的第二致动器施加第二驱动电压。 此外，致动电压互连被配置为控制将数据电压施加到锁存电路，以控制将第一和第二驱动电压施加到第一和第二致动器。

公开(公告)号：WO2013012732A3

公开(公告)日：2013-01-24

申请号：PCT/US2012/046700

申请日：2012-07-13

Applicant: PIXTRONIX, INC. ,  LEWIS, Stephen R. ,  ENGLISH, Stephen ,  YAO, Jianguo ,  DEROO, John ,  BARTON, Roger W.

Inventor： LEWIS, Stephen R. ,  ENGLISH, Stephen ,  YAO, Jianguo ,  DEROO, John ,  BARTON, Roger W.

IPC: G09G3/34 ,  G02B26/04

Abstract: A display apparatus includes an array of light modulators. Each light modulator has a first actuator configured to drive the light modulator into a first state and a second actuator configured to drive the light modulator into a second state. The display apparatus also includes a control matrix including, for each light modulator in the array, a single actuation voltage interconnect. The actuation voltage interconnect is configured to apply a first drive voltage to the first actuator of the light modulator and apply a second drive voltage to the second actuator of the light modulator. In addition, the actuation voltage interconnect is configured to control application of a data voltage to a latch circuit to control the application of the first and second drive voltages to the first and second actuators.

公开(公告)号：WO2007077437A1

公开(公告)日：2007-07-12

申请号：PCT/GB2006/050467

申请日：2006-12-19

Applicant: BOOKHAM TECHNOLOGY PLC ,  YAO, Jianguo ,  PAN, Qi ,  HAGMAN, Matthew

Inventor： YAO, Jianguo ,  PAN, Qi ,  HAGMAN, Matthew

IPC: H03K19/003

CPC classification number: H03F1/52 ,  H03F1/08 ,  H03F3/45475

Abstract: Transimpedance Amplifier Protection Circuits A TIA protection circuit comprises a TIA bias supply VTIA for applying a bias voltage to the TIA, an APD bias supply VAPD for applying a bias voltage to an APD connected to an input of the TIA, and TIA protection means for reducing the bias voltage applied to the APD to a safe level when the power supplied to the TIA is removed so as to protect the input of the TIA from the application of an excessive voltage. This provides fast protection against high voltages to the input stage of a CMOS-based TIA that is simple and reliable in operation. Due to space limitations and power consumption constraints in small form factor pluggable modules, such as XFP and SFP modules, the circuit must be simple, small and require very low power. Several alternative protection schemes are possible, one using a circuit in parallel with the APD bias supply and one using circuit in series with the APD bias supply. The parallel protection scheme uses a fast switch in parallel with the APD bias supply so that, when the TIA bias voltage is turned off for any reason, the protection switch will connect the APD cathode (and TIA input) to ground (0V). In the serial protection scheme the protection switch is connected between the APD and APD bias supply so that, when the TIA bias voltage is turned off for any reason, the protection switch will isolate the APD cathode from the high voltage APD bias supply.

Abstract translation: 互阻抗放大器保护电路TIA保护电路包括用于向TIA施加偏置电压的TIA偏置电源VTIA，用于向连接到TIA的输入端的APD施加偏置电压的APD偏置电源VAPD，以及用于减小TIA的TIA保护装置 当提供给TIA的电力被去除时，施加到APD的偏置电压达到安全水平，以便保护TIA的输入免受过度电压的应用。 这提供了对基于CMOS的TIA的输入级的高电压的快速保护，其在操作中是简单和可靠的。 由于小尺寸可插拔模块（如XFP和SFP模块）的空间限制和功耗限制，电路必须简单，小巧，功耗非常低。 一些替代保护方案是可能的，一种使用与APD偏置电源并联的电路，以及一个使用与APD偏置电源串联的电路。 并联保护方案使用与APD偏置电源并联的快速开关，因此当TIA偏置电压由于任何原因关闭时，保护开关将APD阴极（和TIA输入）连接到地（0V）。 在串联保护方案中，保护开关连接在APD和APD偏置电源之间，使得当TIA偏置电压由于任何原因关闭时，保护开关将APD阴极与高压APD偏置电源隔离。