Abstract: Disclosed is an electronic apparatus comprising: a plurality of connectors to which a plurality of function modules is mountable; a host device configured to make a request for information to the plurality of function modules mounted to the connector, identify suitability of the plurality of function modules according to a function and priority based on the information received from the plurality of function modules, and control the function module to perform a specific function when the function module essentially required for the specific function is fully mounted.

Abstract: A sound output system includes a receiving apparatus comprising receiving circuitry configured to receive a user input; and a sound apparatus comprising circuitry configured to receive the user input from the receiving apparatus and perform an operation based on the user input received from the receiving apparatus. The sound apparatus may include a sound outputter comprising sound output circuitry; a first communicator comprising communication circuitry configured to communicate with the receiving apparatus; and a controller configured to control the sound apparatus to perform the operation based on a command received from the receiving apparatus through the first communicator. The receiving apparatus is removably attachable to the sound apparatus. The sound apparatus is configured to perform different operations depending on different attachment positions of the receiving apparatus, in response to the same user input.

Abstract: Disclosed is an electronic apparatus comprising: a plurality of connectors to which a plurality of function modules is mountable; a host device configured to make a request for information to the plurality of function modules mounted to the connector, identify suitability of the plurality of function modules according to a function and priority based on the information received from the plurality of function modules, and control the function module to perform a specific function when the function module essentially required for the specific function is fully mounted.

Abstract: A sound output system includes a receiving apparatus comprising receiving circuitry configured to receive a user input; and a sound apparatus comprising circuitry configured to receive the user input from the receiving apparatus and perform an operation based on the user input received from the receiving apparatus. The sound apparatus may include a sound outputter comprising sound output circuitry; a first communicator comprising communication circuitry configured to communicate with the receiving apparatus; and a controller configured to control the sound apparatus to perform the operation based on a command received from the receiving apparatus through the first communicator. The receiving apparatus is removably attachable to the sound apparatus. The sound apparatus is configured to perform different operations depending on different attachment positions of the receiving apparatus, in response to the same user input.

Abstract: An optical pickup apparatus which includes a light transmitting system is provided. A light source system provides the light transmitting system with light; a light receiving system includes detectors which are configured to detect light reflected from the multilayer optical disk; and a stray light controller is configured to prevent stray light from reaching the detectors. The stray light controller is disposed between the light source system and the light receiving system. The stray light controller includes a light transmitting portion through which light reflected from the multilayer optical disk and the stray light are configured to pass; a light diffraction portion is configured to diffract the light reflected from the multilayer optical disk and the stray light; and a light blocking portion configured to block the light reflected from the multilayer optical disk and the stray light.

Abstract: An optical disc drive and a control method thereof are disclosed to prevent unstable servo-control of a pickup module caused by an abnormal control signal, when recording/reproducing/erasing of information on/from an optical disc in the optical disc drive, and in particularly, possible collision between the pickup module and the optical disc, even when the pickup module very closely approaches the surface of the optical disc during recording/reproducing/erasing of information on/from a high density optical disc. The optical disc drive includes a pickup module having an objective lens focusing a laser on the surface of a recording layer of the optical disc, and a servo-controlling unit performing the focus servo-control of the pickup module using a high frequency broadband control and a low frequency broadband control of a focus error signal where the high frequency broadband control is performed prior to the frequency broadband control.

Abstract: An optical disc apparatus and a focusing method for the same prevent a focusing start error of an optical pickup when using a ring-shaped lens to handle multiple wavelengths, and allow the optical pickup to start focusing at the correct starting time. To write and/or read data to and/or from an optical disc, an optical pickup in the optical disc apparatus emits a laser beam to the disc through an objective lens, and reads a reflected beam to output a read signal. The optical pickup outputs a signal based on the read reflected beam. An actuator controls the position of the objective lens so that the laser beam is focused on a surface of the disc. A focusing controller performs focusing operations on the actuator using a focus error signal generated from the signal outputted from the optical pickup. A focusing start time detector processes the read signal used to generate the focus error signal and detects when to start the focusing control of the focusing controller.

Abstract: An apparatus and method to accurately discriminate an optical disc type in an optical disc system which records and/or reproduces data to and/or from high density optical discs and low density optical discs includes irradiating a laser beam onto a given one of the optical discs, measuring a track error signal generated from light reflected by the given optical disc, comparing a level of the track error signal with a predetermined reference value, and discriminating a type of the given optical disc according to a comparison result.

Abstract: A method and apparatus for identifying an optical information storage medium, the method of identifying the optical information storage medium loaded into an apparatus for reproducing/recording the optical information storage medium including: moving an object lens at a predetermined velocity in a first direction or a second direction while the optical information storage medium is loaded; generating a sum signal by adding magnitudes of beams reflected by the optical information storage medium and condensed by an optical detector; measuring a first time period during which the sum signal has a value greater than a first level; and detecting a thickness of data layers of the optical information storage medium based on the first time period, wherein the thickness of the data layers corresponds to the type of the optical information storage medium.

Abstract: Minimum deflection acceleration point detection, focus pull-in, and layer jump methods, and an optical disc drive capable of performing the methods. The method of detecting a minimum deflection acceleration point in an optical disc drive includes rotating a disc loaded in the optical disc drive, detecting a first minimum deflection acceleration point of the disc during one rotation cycle of the disc, and detecting a second minimum deflection acceleration point of the disc during one rotation cycle of the disc. Thus, a stable focus pull-in and layer jump is available.

Abstract: An optical disc apparatus and a focusing method for the same prevent a focusing start error of an optical pickup when using a ring-shaped lens to handle multiple wavelengths, and allow the optical pickup to start focusing at the correct starting time. To write and/or read data to and/or from an optical disc, an optical pickup in the optical disc apparatus emits a laser beam to the disc through an objective lens, and reads a reflected beam to output a read signal. The optical pickup outputs a signal based on the read reflected beam. An actuator controls the position of the objective lens so that the laser beam is focused on a surface of the disc. A focusing controller performs focusing operations on the actuator using a focus error signal generated from the signal outputted from the optical pickup. A focusing start time detector processes the read signal used to generate the focus error signal and detects when to start the focusing control of the focusing controller.

Abstract: An optical disc drive and a control method thereof perform a stable layer jump in a deflected optical disc having surface vibration component to increase a rate of success of the layer jump. Accordingly, recording and reproducing of information between layers are continuously performed. The control method of an optical disc drive includes rotating an optical disc, detecting a point where an optical axial relative movement between the optical disc and a pickup module is zero or about zero, and controlling the pickup module such that a layer jump is performed in the vicinity of a point where the optical axial relative speed or movement between the optical disc and the pickup module is zero or about zero during the rotation of the optical disc.

Abstract: An optical disc drive and a control method thereof are disclosed to prevent unstable servo-control of a pickup module caused by an abnormal control signal, when recording/reproducing/erasing of information on/from an optical disc in the optical disc drive, and in particularly, possible collision between the pickup module and the optical disc, even when the pickup module very closely approaches the surface of the optical disc during recording/reproducing/erasing of information on/from a high density optical disc. The optical disc drive includes a pickup module having an objective lens focusing a laser on the surface of a recording layer of the optical disc, and a servo-controlling unit performing the focus servo-control of the pickup module using a high frequency broadband control and a low frequency broadband control of a focus error signal where the high frequency broadband control is performed prior to the frequency broadband control.

Abstract: An apparatus and method to accurately discriminate an optical disc type in an optical disc system which records and/or reproduces data to and/or from high density optical discs and low density optical discs includes irradiating a laser beam onto a given one of the optical discs, measuring a track error signal generated from light reflected by the given optical disc, comparing a level of the track error signal with a predetermined reference value, and discriminating a type of the given optical disc according to a comparison result.