公开(公告)号：US20230231463A1

公开(公告)日：2023-07-20

申请号：US17703304

申请日：2022-03-24

Applicant: Delta Electronics, Inc.

Inventor： Chien-Jen Chen ,  Chao-Shun Yang ,  Cheng-Hsun Chang

IPC: H02M1/00 ,  H02M7/04 ,  H02M3/158

CPC classification number: H02M1/0006 ,  H02M7/05 ,  H02M3/158 ,  H02M1/007 ,  H02M1/009

Abstract: The present disclosure provides a conversion circuit including a power supply module, positive and negative input terminals, positive and negative output terminals, a switch, an inductor, input and output capacitors, and a controller. The power supply module converts an AC power for providing three potentials on three power supply terminals respectively. The potential on the first power supply terminal is higher than the potential on the second power supply terminal, which is higher than the potential on the third power supply terminal. The positive and negative input terminals are electrically connected to the first and third power supply terminals respectively, and a voltage therebetween is an input voltage. The negative output terminal is electrically connected to the third power supply terminal. The controller is electrically connected to the positive input terminal, the second power supply terminal and the switch. A voltage across the controller is lower than the input voltage.

公开(公告)号：US09728141B2

公开(公告)日：2017-08-08

申请号：US14190576

申请日：2014-02-26

Applicant: DELTA ELECTRONICS, INC.

Inventor： Chung-Yi Yang ,  Bor Wang ,  Cheng-Hsun Chang

IPC: G09G3/34

CPC classification number: G09G3/3406 ,  G09G2310/061

Abstract: A projection display device is disclosed herein. The projection display device includes an image processing module and a light source driver. The image processing module is configured for receiving an image data and generating a display signal which includes an image period and a black state period. The light source driver is configured for generating a light driving signal to drive a projection light source, wherein the light driving signal includes a first segment and a second segment in the black state period, and the average amplitude of the light driving signal in the second segment is lower than the average amplitude of the light driving signal in the image period. A driving method is disclosed herein as well.

公开(公告)号：US11757344B2

公开(公告)日：2023-09-12

申请号：US17703304

申请日：2022-03-24

Applicant: Delta Electronics, Inc.

Inventor： Chien-Jen Chen ,  Chao-Shun Yang ,  Cheng-Hsun Chang

IPC: H02M3/158 ,  H02M1/00 ,  H02M7/04

CPC classification number: H02M1/0006 ,  H02M1/007 ,  H02M3/158 ,  H02M7/05 ,  H02M1/009

Abstract: The present disclosure provides a conversion circuit including a power supply module, positive and negative input terminals, positive and negative output terminals, a switch, an inductor, input and output capacitors, and a controller. The power supply module converts an AC power for providing three potentials on three power supply terminals respectively. The potential on the first power supply terminal is higher than the potential on the second power supply terminal, which is higher than the potential on the third power supply terminal. The positive and negative input terminals are electrically connected to the first and third power supply terminals respectively, and a voltage therebetween is an input voltage. The negative output terminal is electrically connected to the third power supply terminal. The controller is electrically connected to the positive input terminal, the second power supply terminal and the switch. A voltage across the controller is lower than the input voltage.

公开(公告)号：US11582848B2

公开(公告)日：2023-02-14

申请号：US17370525

申请日：2021-07-08

Applicant: DELTA ELECTRONICS, INC.

Inventor： Jui-Lung Chiu ,  Chia-Cheng Weng ,  Cheng-Hsun Chang

IPC: H05B45/46 ,  H05B47/10 ,  H05B47/105

Abstract: An LED power transmission line with load identification function is coupled to an LED power control apparatus having a plurality of power output ports and an LED load. The LED power transmission line includes a power transmission circuit, a signal transmission circuit, and a memory apparatus. The power transmission circuit transmits a power outputted from the power output port to the LED load. The signal transmission circuit is coupled to a control module of the LED power apparatus through the power output port. The memory apparatus stores an LED specification information related to an electrical specification of the LED load. The LED specification information is provided to the control module through the signal transmission circuit so that the control module limits an output current outputted from the power output port according to the LED specification information.