Samsung Electro-mechanics Co., Ltd.

Solum Co., Ltd.

University of Seoul Industry Cooperation Foundation

Seo Hyung Kim

Jae Shin Lee

Dae Hoon Han

Bo Hyun Hwang

Jung Eui Park

Jung Sun Kwon

Joon Youp Sung

Kyoung Joong Min

Seung Kon Kong

Koon Shik Cho

Kang Yoon Lee

Joo Hyung Lee

Hong Jin Kim

Joong Ho Choi

Jin Soo Lee

Do Hwan Kim

Seung Ryung Ryu

An infrared image sensor includes a first integrate circuit (IC), a bolometer disposed on or above one surface of the first IC configured to detect infrared rays passing through a lens module, a via electrically connecting the first IC and the bolometer, and a reflective layer disposed between the first IC and the bolometer, wherein the first IC includes at least one of a read-out (RO) element configured to perform analog processing for the bolometer to generate infrared sensing information and an image signal process (ISP) element configured to perform digital processing based on the bolometer to generate infrared image information, and at least one of an autofocusing (AF) control element and an optical image stabilization (OIS) control element configured to adjust a positional relationship between the lens module and the bolometer.

Infrared image sensor and infrared camera module

A camera module includes a gyro sensor generating shaking data, a first driver integrated circuit (IC) generating a driving signal to move a first lens barrel in one or more directions perpendicular to an optical axis direction, in response to the shaking data provided by the gyro sensor, and a second driver IC generating a driving signal to move a second lens barrel in one or more directions perpendicular to the optical axis direction, in response to the shaking data provided by the gyro sensor. Each of the first driver IC and the second driver IC operates in a normal mode and a low power mode, and when the first driver IC operates in the low power mode, whether to activate a communication path of the shaking data in the first driver IC is determined in response to a mode of the second driver IC.

Camera module

A camera module includes a gyro sensor including a data output port and configured to provide gyro data through the data output port, a first camera module including a first lens barrel, and a first shake corrector configured to provide an optical image stabilization (OIS) function to the first lens barrel and including a first communication pad configured to receive the gyro data, and a second camera module including a second lens barrel, and a second shake corrector configured to provide an OIS function to the second lens barrel and including a second communication pad configured to receive the gyro data, wherein the first communication pad of the first shake corrector and the second communication pad of the second shake corrector are connected in common to the data output port.

There is provided a multi-output power supply capable of maintaining power balancing between multiple output powers by fixing a switching duty until a voltage level reaches a predetermined voltage level during an initial stage of a soft-start operation, the multi-output power supply including a power supply unit switching an input power and outputting a plurality of powers having levels determined according to the switching, and a controller controlling a soft switching operation of the power supply unit during an initial operation and fixing a switching duty of the power supply unit to a preset switching duty according to a result of a comparison between a preset reference voltage level and an operating voltage determining whether the soft switching operation is performed or not during the soft switching operation.

Multi-output power supply

There is provided a multi-output power supply apparatus capable of maintaining multiple output voltages in a balanced state by limiting a variable range of a switching duty according to a load state. The multi-output power supply apparatus includes: a power supply unit switching input power to output a plurality of voltages whose power levels are determined according to the switching operation; and a controller detecting power states of at least some of the plurality of voltages from the power supply unit, and limiting a range of a switching duty of the power supply unit to a pre-set range when the detected power states correspond to a pre-set limited power state.

Multi-output power supply apparatus enhancing a power imbalance between multiple outputs

There is provided a power supply apparatus capable of precisely control a primary side switching frequency at a secondary side by receiving fed-back information regarding a power state at the secondary side without a separate expensive circuit or a complicated circuit. The power supply apparatus includes: a power supplying unit having a primary side and a secondary side having different ground electrical characteristics, switching power input to the primary side, and transferring the switched power to the second side electrically insulated from the primary side to supply the power; a controlling unit provided on the secondary side and receiving fed-back information regarding a power state of the power supplying unit to control a maximum value and a minimum value of a switching frequency of the primary side; and a transferring unit transferring a control signal from the controlling unit to the primary side of the power supplying unit.

Power supply apparatus

There is provided a light emitting diode power supply apparatus capable of limiting a rise in a voltage level of a power supplied to a light emitting diode even in the case in which driving of the light emitting diode is stopped for a long period of time. The light emitting diode power supply apparatus includes: a power supply unit supplying a driving power set under a control to a light emitting diode; and a controlling unit selecting one of a detection voltage obtained by detecting a current flowing to the light emitting diode and a voltage provided according to an operation state of the light emitting diode to control a power supply operation of the power supply unit.

Light emitting diode power supply apparatus

There are provided a power supply device switching power input to a primary side to supply the power to a predetermined load connected to a secondary side electrically insulated from the primary side and a control circuit thereof. The control circuit generates a predetermined PWM signal to apply the PWM signal to a dimming switch connected to an end of the load and controls a switching frequency of the primary side, based on a control voltage generated according to a feedback signal according to the power supplied to the load and the PWM signal, and the control voltage maintains a constant difference between a minimum voltage level and a maximum voltage level regardless of a duty of the PWM signal.

Power supply device and control circuit thereof

There is provided a light emitting diode driving apparatus capable of uniformly maintaining current balance between light emitting diode channels. The light emitting diode driving apparatus includes: a DC to DC converting unit converting the direct current power into settable driving power; a detecting unit detecting voltage drops generated in each of a plurality of light emitting diode channels each having a plurality of light emitting diodes; a converting unit converting an analog value into a digital value; and a driving unit differentially setting duty cycles of switching signals according to the digital values from the converting unit to drive the plurality of light emitting diode channels.

Light emitting diode driving apparatus

There is provided a light emitting diode driving apparatus, including: a power supplying unit converting input power into driving power according to a control and supplying the converted driving power to a light emitting diode channel; a driving unit controlling current flowing in the light emitting diode channel according to a pulse width modulation (PWM) dimming signal from the outside; and a controlling unit comparing a reference level set by a duty of the PWM dimming signal with a detection voltage level of the light emitting diode channel and controlling a power converting operation of the power supplying unit according to the comparison result.

Growing community of inventors

Gyunggi-do, South Korea

Seo Hyung Kim