Samsung Electronics Co., Ltd.

Jak-heun Yang

Sung-Yong Kim

Dae-kwang Kong

A sound output apparatus configured to connect to an audio processing apparatus may include a communication interface which receives an audio signal from the audio processing apparatus through a wireless communication; a speaker which outputs the received audio signal; an input unit which receives a user control command; and a controller which controls the communication interface so that the received control command is transmitted to the audio processing apparatus through the communication interface.

Sound output apparatus, audio processing apparatus, sound output method, and audio processing method

An optical disk drive and a method thereof for controlling an optical disk drive spindle motor to adaptively stop the rotation according to the varying level of a detected tracking error signal. The optical disk drive directs the operation of the spindle motor by controlling driving voltage values to be supplied to the spindle motor depending on the level of a tracking error signal which varies according to the RPM of the optical disk.

Optical disk drive and method of controlling spindle motor thereof

An optical disc player, and more particularly, an apparatus controlling a mirror signal independently of variations of the quantity of light in a laser received by a pickup or the reflectivity of a disc, and a method thereof. The apparatus includes an envelope detector detecting an envelope of a signal which is reflected from an optical disc, a center voltage outputting unit outputting a center voltage of the envelope, a comparator outputting the optimum mirror signal by comparing the envelope with the center voltage using a predetermined mirror controlling signal and a mirror signal controller outputting a predetermined mirror controlling signal to the comparator, until the mirror signal output from the comparator reaches a predetermined level compared to a fixed mirror signal. Further, a mirror signal output from the comparator is used as an offset signal for the subsequent mirror signal and thus a regular mirror signal can be output independently of variations of the quantity of light in a laser received by a pickup or the reflectivity of a disc. As a result, the mirror signal can be correctly incident on a target point when a track of a disc is jumped.

Growing community of inventors

Suwon-si, South Korea

Jak-heun Yang