Samsung Electronics Co., Ltd.

Fci, Inc.

Young-Woong Kim

Sung-Jin Park

Jong-In Lee

Seong-Woon Kang

Kyu-Suk Lee

Kyung-Hoon Cha

Chul-woo Lee

Kyung-hoon Cha

Yong-Woo Kim

Seung-wook Lee

Tae-jin Kim

Ick-hyoung Yoo

Byoung-Soo Kim

Jin-Ho Shin

Jong-Gyu Ham

A method and an apparatus are provided for performing wireless communication between terminals. An inquiry message is transmitted to a neighboring terminal. An inquiry response message is received from the neighboring terminal. It is determined whether the apparatus overlaps the neighboring terminal. When the apparatus overlaps the neighboring terminal, paging is automatically performed, without intervention of a user of the apparatus, and pairing between the apparatus and the neighboring terminal is established.

Method and apparatus for performing wireless communication between terminals

A protecting cover for an electronic device is provided, the protecting cover including a front cover portion positioned on a front surface of the electronic device, a back cover portion connected with the front cover portion and positioned on a back surface of the electronic device, an auxiliary display unit provided on the front cover portion, and a module configured to control transmission and reception of data and power supply depending on opening and closing of the front cover portion.

Protecting cover for electronic device

A portable terminal provided with a cover is provided. The portable terminal includes a main body including an input/output unit; a cover attachable to and detachable from the main body, and provided with an output unit; a first sensor that detects folding/unfolding of the cover; and a controller that controls an output of the input/output unit or the output unit according to a detection signal of the first sensor.

Portable terminal having cover device

A method and apparatus for performing interaction between electronic papers is provided. A first electronic paper recognizes installation of a binder on the first electronic paper. The first electronic paper sets an interaction mode according to the installation of the binder on the first electronic paper. The first electronic paper establishes a communication connection with a second electronic paper on which the binder is also installed. The first electronic paper performs data communication with the second electronic paper according to the interaction mode.

Interaction method between electronic papers, machine-readable storage medium and electronic paper

A printing device for transferring an image representing contents on electronic paper is provided. The printing device includes an electronic paper controller for generating a control signal for transferring the image and outputting the generated control signal to the electronic paper, a touch sensor on a top surface of which the electronic paper is disposed to detect a user input command, a touch sensor controller for outputting a control signal to the touch sensor for driving the touch sensor and receiving the user input command detected by the touch sensor, and a main controller for controlling the electronic paper controller to change an image displayed on the electronic paper according to the user input command input from the touch sensor controller.

Electronic paper and printing device

Provided is electronic paper that includes an imaging sheet for displaying content, a memory for storing the content, a mode switch unit for manually setting an operation mode of the electronic paper, and a controller for performing at least one operation from a plurality of operations including encryption of the content stored in the memory, deletion of the content stored in the memory, deletion of content displayed on the imaging sheet from a screen, and display of a lock screen that requires input of a password on the imaging sheet, according to an operation mode that is set by a user using the mode switch unit.

Electronic paper with mode switch unit

A reflective type display device is provided, and includes a drive layer that includes pigment particles containing at least two colors of pigments, and transparent electrodes provided on a top surface and a bottom surface of drive layer, respectively, so as to drive the pigment particles. The drive layer includes transparent particles provided among the pigment particles. In the reflective type display device, the pigment particles are arranged among the transparent particles that form the drive layer and a lighting device is disposed on the bottom surface of the drive layer. Thus, uniform lighting may be provided even in a dark environment regardless of the size of the display device.

Reflective type display device

A bias circuit for a smart power amplifier includes a high power mode bias circuit and a low power mode bias circuit, and operates only one of the bias circuits selectively using a switching circuit according to an input signal. Therefore, the bias circuit of high power mode and the bias circuit of the low power mode are divided and can be optimized according to characteristics of the power. Accordingly, a gain difference with respect to each power can be minimized and the low power mode can be controlled with a small amount of current in a state of initial current with a low power and in a middle power, such that an efficiency of the power amplifier can be improved at low power.

Bias circuit for smart power amplifier

An optical pickup driving apparatus includes a carriage for a moving portion having an objective lens, a feeding motor having a moving coil for supporting the carriage, a magnet for producing a magnetic linked flux to the moving coil and a yoke member for controlling the magnetic path of the magnetic flux and movably supporting the moving coil, and a plurality of coils for minutely moving the objective lens vertically and horizontally in response to the magnet of the feeding motor. By reducing the weight of the moving portion mounted on the carriage, the feeding motor has a rapid response characteristic and therefore the optical pickup can search for information at high speed.

Optical pickup driving apparatus for an optical disk drive

An optical pickup for recording and reproducing information via a magneto-optical disk comprises a phase-diffraction grating which is diffracted in two directions perpendicular to each other on a plane perpendicular to a beam axis. The diffracted light of the phase-diffraction grating has a different phase for each direction, and the phases are varied according to the polarization angle which is rotated by the Kerr effect of the magneto-optical disk. The reproduction signal is detected using the intensity variation of the diffracted light of the two directions due to the phase change. Also, the focus error signal according to the oscillation of the magneto-optical disk is detected by condensing the diffracted light of the phase-diffraction grating by means of the condensing lens and using the amplitude change of the diffracted light. Such an optical pickup is not affected by the variation of the light quantity, thereby contributing to clear reproduction and the enhancement of the signal-to-noise ratio.

Optical pick-up utilizing a phase diffraction grating for diffracting

An optical head which optically reads and writes signals recorded on a recording medium comprises a beam cutting mirror provided to the rear of a beam splitter and having a total reflection surface, a total absorption surface, and a polarizing surface, and a photodetector detecting incident beams. Since the photodetector and the light source are provided on two parallel light source, the optical head of the present invention can use a laser beam detector and a photodetector for detecting focussing signals, tracking signals, and information signals as one package, so as to bring a rapid improvement in miniaturization, lightweight, and compaction.

Optical head having a beam cutting mirror with a total absorption surface

An magneto-optical disk drive comprises a driving apparatus for rotating a medium, an electromagnet positioned above or below the medium for producing a magnetic field on a recording surface of the medium, and an optical head by which laser light illuminates the recording surface and the laser light reflected from the recording surface is picked up. Here, the electromagnet comprises a plurality of subdivided electromagnet elements, a magnetic field concentrator by combining the electromagnet elements in a magnetic circuit and concentrating magnetic fields produced from the combined electromagnet elements on a portion of the electromagnet, and a center magnetic pole provided in an opposing position with respect to the optical head, to thereby make the magnetic field concentrated by the magnetic field concentrator pass through the recording surface of the medium. Accordingly, the recording time or data on the medium becomes greatly shortened, thereby enabling high speed data recording.

Growing community of inventors

Seoul, South Korea

Young-Woong Kim