公开(公告)号：US20160156419A1

公开(公告)日：2016-06-02

申请号：US14556540

申请日：2014-12-01

Applicant: Infineon Technologies AG

Inventor： Norbert Druml ,  Armin Krieg ,  Markus Dielacher ,  Robert Lobnik ,  Michael Mark

IPC: H04B10/85 ,  H04W76/02 ,  H04W12/08 ,  H04W4/02 ,  H04W48/04 ,  H04W72/04 ,  H04W4/00

CPC classification number: H04W12/08 ,  H04B10/1143 ,  H04B10/1149 ,  H04W4/023 ,  H04W4/80 ,  H04W12/06 ,  H04W48/04

Abstract: A transceiver device includes a time of flight circuit configured to emit a modulated light transmit signal and to receive a modulated light receive signal. The transceiver device includes a control module configured to control a transmission of a modulated light transmit signal by the time of flight circuit to an access control device. The modulated light transmit signal includes information related to a transmission access request. The control module is further configured to control an establishment of a wireless transmission channel based on a modulated light receive signal received by the time of flight circuit from the access control device. The modulated light receive signal includes information for establishing the wireless transmission channel.

Abstract translation: 收发器装置包括配置成发射调制光发射信号并接收调制光接收信号的飞行时间电路。 所述收发器装置包括控制模块，所述控制模块被配置为通过飞行时间电路来控制调制光发送信号到访问控制装置的传输。 调制光发送信号包括与发送接入请求有关的信息。 所述控制模块还被配置为基于由所述访问控制装置的飞行时间电路接收到的调制光接收信号来控制无线传输信道的建立。 调制光接收信号包括用于建立无线传输信道的信息。

公开(公告)号：US09185762B2

公开(公告)日：2015-11-10

申请号：US13866461

申请日：2013-04-19

Applicant: Infineon Technologies AG

Inventor： Michael Mark ,  Markus Dielacher ,  Martin Flatscher ,  Josef Prainsack

IPC: G01J5/02 ,  H05B33/08 ,  G01J5/10 ,  G01J1/46

CPC classification number: H05B33/0845 ,  G01J1/46 ,  G01J5/10 ,  H05B33/0842

Abstract: Some aspects of the present disclosure provide system and method of operation of a driving circuit for a light emitting element in a Time-of-Flight (ToF) camera. A DC-DC converter is configured to emit a constant current, and is coupled in parallel to a first modulation switch configured to connect the driving circuit to ground. The first modulation switch is further configured to alternate connections between the current source and ground at a frequency in a desired range of operation to produce an AC current. In some embodiments, an RC circuit element is coupled to an output electrode of the light emitting element and configured to apply a reverse bias to decrease turn-off time of the light emitting element. In some embodiments, a second modulation switch is coupled to the output electrode and configured to apply the reverse bias across the light emitting element. Other systems and methods are also disclosed.

Abstract translation: 本公开的一些方面提供了用于飞行时间（ToF）照相机中的发光元件的驱动电路的操作系统和方法。 DC-DC转换器被配置为发射恒定电流，并且并联耦合到被配置为将驱动电路连接到地的第一调制开关。 第一调制开关还被配置为以期望的操作范围内的频率在电流源和地之间交替连接以产生AC电流。 在一些实施例中，RC电路元件耦合到发光元件的输出电极并被配置为施加反向偏压以减少发光元件的关断时间。 在一些实施例中，第二调制开关耦合到输出电极并且被配置为跨越发光元件施加反向偏置。 还公开了其它系统和方法。