公开(公告)号：US11258995B2

公开(公告)日：2022-02-22

申请号：US16664961

申请日：2019-10-28

Applicant: Qisda Corporation

Inventor： Chi-Jen Chen ,  Fang-Chieh Lu ,  Chun-Hsiao Lin

IPC: H04N9/31 ,  G03B21/20

Abstract: A projector and a drive circuit thereof are provided. The projector includes a light source and a drive circuit. The light source includes at least one red light diode, at least one green light diode, at least one first blue light diode and at least one second blue light diode. The drive circuit includes a red light drive circuit, a green light drive circuit, a first blue light drive circuit and a second blue light drive circuit. The green light drive circuit outputs a green light drive signal to the green light diode according to a green light control signal. The second blue light drive circuit outputs a second blue light drive signal to the second blue light diode according to a second blue light control signal. The second blue light control signal and the green light drive signal have synchronous pulse.

公开(公告)号：US09668329B2

公开(公告)日：2017-05-30

申请号：US14846837

申请日：2015-09-07

Applicant: QISDA CORPORATION

Inventor： Chi-Jen Chen ,  Fang-Chieh Lu ,  Chuan-Chu Chen ,  Ching-Ying Tsou

IPC: H05B33/08 ,  H05B37/02

CPC classification number: H05B33/0827 ,  H05B33/0857

Abstract: An electronic device includes a first light module, a second light module, a primary driver, and a first secondary driver. The first light module is used to emit a first light, and the second light module is used to emit a second light. The primary driver has a first control terminal for turning on the first light module during a first duration, and a second control terminal for turning on the second light module during a second duration. The first secondary driver is used to turn on the first light module during the second duration.

公开(公告)号：US09547224B2

公开(公告)日：2017-01-17

申请号：US14445073

申请日：2014-07-29

Applicant: QISDA OPTRONICS (SUZHOU) CO., LTD. ,  QISDA CORPORATION

Inventor： Fu-Shiung Shih ,  Chi-Jen Chen ,  Fang-Chieh Lu ,  Po-Fu Wu ,  Chun-Jung Hu

IPC: G03B21/16 ,  H04N9/31 ,  G03B21/20

CPC classification number: G03B21/16 ,  G03B21/2086 ,  H04N9/3144

Abstract: A projector includes an apparatus casing, a light source module, a flow generating device, a sensing module, and a power module. The light source module is disposed inside the apparatus casing and includes a light-emitting part and a lampshade surrounding the light-emitting part. The flow generating device can generate an air flow for dissipating heat by the light source module. The sensing module is disposed in the apparatus casing and includes a thermo-sensitive component disposed near the lampshade and located in a flowing path of the air flow. The power module is disposed in the apparatus casing and electrically connected to the light source module and the sensing module. The power module selectively stops powering the light source module according to an electric parameter of the thermo-sensitive component. Thereby, the invention protects the projector from being overheated by use of the thermo-sensitivity of the thermo-sensitive component.

Abstract translation: 投影仪包括装置壳体，光源模块，流量发生装置，感测模块和功率模块。 光源模块设置在设备壳体的内部，并且包括发光部分和围绕发光部分的灯罩。 流动产生装置可以产生用于由光源模块散热的空气流。 感测模块​​设置在装置壳体中，并且包括设置在灯罩附近并位于空气流的流动路径中的热敏部件。 电源模块设置在设备壳体中并电连接到光源模块和感测模块。 功率模块根据热敏部件的电参数选择性地停止对光源模块供电。 因此，本发明通过使用热敏部件的热敏感来保护投影机不被过热。

公开(公告)号：US20150077719A1

公开(公告)日：2015-03-19

申请号：US14445073

申请日：2014-07-29

Applicant: QISDA OPTRONICS (SUZHOU) CO., LTD. ,  QISDA CORPORATION

Inventor： Fu-Shiung Shih ,  Chi-Jen Chen ,  Fang-Chieh Lu ,  Po-Fu Wu ,  Chun-Jung Hu

IPC: G03B21/16 ,  G03B21/20

CPC classification number: G03B21/16 ,  G03B21/2086 ,  H04N9/3144

Abstract: A projector includes an apparatus casing, a light source module, a flow generating device, a sensing module, and a power module. The light source module is disposed inside the apparatus casing and includes a light-emitting part and a lampshade surrounding the light-emitting part. The flow generating device can generate an air flow for dissipating heat by the light source module. The sensing module is disposed in the apparatus casing and includes a thermo-sensitive component disposed near the lampshade and located in a flowing path of the air flow. The power module is disposed in the apparatus casing and electrically connected to the light source module and the sensing module. The power module selectively stops powering the light source module according to an electric parameter of the thermo-sensitive component. Thereby, the invention protects the projector from being overheated by use of the thermo-sensitivity of the thermo-sensitive component.

Abstract translation: 投影仪包括装置壳体，光源模块，流量发生装置，感测模块和功率模块。 光源模块设置在设备壳体内部，并且包括发光部分和围绕发光部分的灯罩。 流动产生装置可以产生用于由光源模块散热的空气流。 感测模块​​设置在装置壳体中，并且包括设置在灯罩附近并位于空气流的流动路径中的热敏部件。 电源模块设置在设备壳体中并电连接到光源模块和感测模块。 功率模块根据热敏部件的电参数选择性地停止对光源模块供电。 因此，本发明通过使用热敏部件的热敏感来保护投影机不被过热。

公开(公告)号：US10091473B1

公开(公告)日：2018-10-02

申请号：US15704009

申请日：2017-09-14

Applicant: QISDA CORPORATION

Inventor： Chi-Jen Chen ,  Chun-Hsiao Lin ,  Fang-Chieh Lu ,  Chuan-Chu Chen

IPC: H04N9/31 ,  G03B21/00

Abstract: A driver circuit includes a first voltage converter, a light source driver, a second voltage converter and a control circuit. The first voltage converter converts a first voltage to a second voltage. The light source driver is coupled to the first voltage converter, converts the second voltage to a third voltage and outputs the third voltage to a light source for providing light. The second voltage converter is coupled to the first voltage converter, converts the second voltage to a fourth voltage and outputs the fourth voltage. The control circuit is coupled to the second voltage converter to receive the fourth voltage and outputs a first control signal to control the light source driver for controlling the light source. The first voltage is lower than the second voltage, the second voltage is higher than the third voltage, and the second voltage is higher than the fourth voltage.

公开(公告)号：US20170071051A1

公开(公告)日：2017-03-09

申请号：US14846837

申请日：2015-09-07

Applicant: QISDA CORPORATION

Inventor： Chi-Jen Chen ,  Fang-Chieh Lu ,  Chuan-Chu Chen ,  Ching-Ying Tsou

IPC: H05B37/02

CPC classification number: H05B33/0827 ,  H05B33/0857

Abstract: An electronic device includes a first light module, a second light module, a primary driver, and a first secondary driver. The first light module is used to emit a first light, and the second light module is used to emit a second light. The primary driver has a first control terminal for turning on the first light module during a first duration, and a second control terminal for turning on the second light module during a second duration. The first secondary driver is used to turn on the first light module during the second duration.

Abstract translation: 电子设备包括第一光模块，第二光模块，主驱动器和第一辅助驱动器。 第一光模块用于发射第一光，第二光模块用于发射第二光。 主驱动器具有用于在第一持续时间内接通第一光模块的第一控制端子和用于在第二持续时间内接通第二光模块的第二控制端。 第一个次驱动器用于在第二个持续时间内打开第一个光模块。

公开(公告)号：US11044435B2

公开(公告)日：2021-06-22

申请号：US16429047

申请日：2019-06-02

Applicant: QISDA CORPORATION

Inventor： Fang-Chieh Lu ,  Chi-Jen Chen ,  Chuan-Chu Chen ,  Ching-Ying Tsou

IPC: H04N5/63 ,  G03B21/14 ,  G03B21/20 ,  H04N7/04 ,  H04N9/31

Abstract: A driver circuit includes a first voltage conversion unit, a second voltage conversion unit, a third voltage conversion unit, a light driver and a control circuit. The first voltage conversion unit may convert a first voltage to a second voltage. The second voltage conversion unit may convert the second voltage to a third voltage in a non-electrically isolated manner. The third voltage conversion unit may convert the second voltage to a fourth voltage in a non-electrically isolated manner. The light driver may receive the third voltage and a control signal to generate a control current according to the control signal. The control circuit may receive the fourth voltage and an image signal to generate the control signal according to the image signal.

公开(公告)号：US10816888B1

公开(公告)日：2020-10-27

申请号：US16830442

申请日：2020-03-26

Applicant: Qisda Corporation

Inventor： Chi-Jen Chen ,  Fang-Chieh Lu ,  Chun-Hsiao Lin

IPC: G03B21/20 ,  H05B45/12 ,  H05B45/22 ,  H05B41/02 ,  H05B33/08

Abstract: A power control circuit for a projector for controlling a light source of the projector. The power control circuit includes: a detector for detecting an AC input voltage is a first value or a second value; a switch coupled to the detector, conducting or disconnecting of the switch being based on the detector detecting whether the AC input voltage is the first value or the second value, the switch further outputting a first control signal; and a laser driver coupled to the switch and the light source, in response the first control signal from the switch to change power consumption of the light source. When the AC input voltage is the first value, power consumption of the light source is a default value. When the AC input voltage is the second value, power consumption of the light source decreased from the default value.

公开(公告)号：US09857670B2

公开(公告)日：2018-01-02

申请号：US15054109

申请日：2016-02-25

Applicant: Qisda Optronics (Suzhou) Co., Ltd. ,  Qisda Corporation

Inventor： Hsien-Tsung Chiu ,  Fang-Chieh Lu ,  Ying-Fang Lin

IPC: G03B21/14 ,  G03B21/00

CPC classification number: G03B21/145 ,  G03B21/00 ,  G03B21/14

Abstract: A power board and ballast module includes a housing, a power board, a ballast and an electrical connector. The power board is disposed in the housing. The ballast is disposed in the housing and electrically connected to the power board. The electrical connector is disposed in the housing and exposed out of the housing, wherein the power board and the ballast are electrically connected to the electrical connector respectively. Projectors using the power board and ballast module are also provided.