Compal Electronics, Inc.

Shao-Tsu Kung

Ming-Hsun Chou

Yi-Hung Shen

Chen-Hua Liu

Ming-Shen M Sun

Po-An Lin

Chih-Tarng Chuang

Yi-Chang Chen

Chih-Chuan Cheng

Chia-An Chen

Chuan-Yuan Lee

Yung-Hui Chen

Huai-Te Tseng

Chun-Chih Liu

Jenq-Haur Pan

Wen-Yi Huang

Chia-Chang Chen

Chung-Hong Lin

Chia-Fen Chi

Lung-Hsud Song

Chun-Chung Lai

Shu-Hua Tsai

A speaker includes a base, a diaphragm, a separating module, a first electrode set and a second electrode set. The base and a porous structure are formed a cavity. The diaphragm is disposed in the cavity and includes a first part and a second part. The separating module is located in the cavity and contacts the diaphragm to separate the cavity into the first and the second chambers. The first electrode set disposed in the first chamber is connected to a first sound source signal, such that the first part of the diaphragm is vibrated and the first sound source signal is exported from the first chamber. The second electrode set disposed in the second chamber is connected to a second sound source signal, such that the second part of the diaphragm is vibrated and the second sound source signal is exported from the second chamber.

Speaker

A method for charging a battery module including a plurality of parallelly-connected battery cell sets in multiple stages is provided. In the present invention, a constant current charging is applied for charging the battery module in an initial stage of charging through the method of voltage control or current control. Then, the charging current is lowered substantially to reduce the charging speed when the voltage of one of the battery cell sets exceeds a safety value or a total voltage of the battery module itself reaches a rated voltage. Accordingly, a safety problem of the battery can be avoided and battery life can be prolonged.

Method for charging battery module in multiple stages

A rotatable camera has a lens unit comprising a photographing head and an oblique driving shaft arranged in oblique position with the photographing head, a bearing support for pivotally mounting the photographing head inside, a motor and a driving gear set driven by the motor to in turn drive the oblique driving shaft to generate rotating motion, when the oblique shaft is in rotating motion, the photographing head of the lens unit immediately rotates and changes the angle of photographing so that the rotatable camera employs only a single motor to drive the photographing head of the lens unit to rapidly move to the direction to be monitored, particularly, due to no time delay any corners shall be monitored by the rotatable camera.

Rotatable camera controlled by a single motor that moves a camera lens in a panning or tilting motion

A method for charging portable electronic device is disclosed. When the portable electronic device is connected to a power source, the method selects a protecting mode or a fast charging mode to charge the battery according to the current operating status of the portable electronic device. Simultaneously, the battery power is also controlled within a safety range. Therefore, the invention can charge the battery of the portable electronic device at a high speed without affecting the efficiency of the device. Moreover, the battery is also protected from being overcharged to extend the life of the battery.

Method for charging portable electronic device

A rotatable camera has a motor, a lens unit comprising a photographing head and a driving rod coupled to the photographing head, a spherical bearing support for pivotally mounting the photographing head, and a rotatable disc driven in rotation motion by the motor to drive the driving rod of the lens unit move along a spiral shaped locus, and, when the motor is driven, the photographing head is at the same time driven by the driving rod to rotate and change its angular position, so that the rotatable camera employs only a single motor to drive the photographing head of the lens unit to rapidly move to the direction to be monitored, particularly, due to no time delay any corners shall be monitored by the rotatable camera.

Rotatable camera that moves a camera lens unit in a panning or tilting motion by a single motor

Music player

A fastener module suitable for a foldable electronic apparatus with a first body and a second body pivotally jointed with each other is provided. The module includes a first fastener, a second fastener, a control circuit, and a magnetic element. The first fastener is disposed in the first body and has magnetic susceptibility. The second fastener is disposed in the second body and suitable for being fastened with the first fastener. The control circuit is disposed in the foldable electronic apparatus. The magnetic element is disposed in the foldable electronic apparatus, and is coupled to the control circuit. The magnetic element is controlled by the control circuit to determine whether to exert a magnetic force on the first fastener for driving the first fastener to be fastened with the second fastener.

Fastener module controlled by magnetic force

A remote controller is disclosed to include a housing, a control unit mounted in the housing, a communication unit mounted in the housing and electrically coupled to the control unit and controllable by the control unit to communicate with an external host and to download a control content from the external host, and a display unit, which is installed in housing and electrically coupled to the control unit, having a display zone for displaying the control content downloaded by the communication unit and a control zone for inputting instructions for enabling inputted instructions to be sent to a controlled device by the communication unit to drive the controlled device to execute the instructions.

Remote controller and its content downloading and executing method

A radio frequency identification (RFID) security system includes an RFID tag and a portable electronic device. The RFID tag has a user ID code. The portable electronic device has a reader, an identification memory and an identification controller. The reader is used to communicate with the RFID tag and to receive the user ID code. The identification memory is used to store a user password. The identification controller is electrically connected to the reader and the identification memory and is used to compare the user ID code and the user password. When the user ID code is the same as the user password, the identification controller is arranged to transmit an enable signal to grant the access of the portable electronic device.

Radio frequency identification security system and method

A method for attaching an IC package to a circuit board, the IC package having a plurality of electrical contacts in an arrangement having a perimeter, first positions the IC package adjacent to the circuit board. Then, electrically connects the IC package to the circuit board through the plurality of electrical contacts. The method finally, disposes at least one anchor mechanically attaching the IC package to the circuit board, the anchor disposed at a location outside of the perimeter of the plurality of electrical contacts. The type, quantity, and exact geometry of the anchors depend on the specific design parameters of the IC package and circuit board.

Method for attaching an integrated circuit package to a circuit board

A thermal module with temporary heat storage. The thermal module includes a heat storage, a heat absorber, a heat dissipater, and a heat pipe for rapidly transferring heat from the heat absorber to the heat dissipater. The heat storage includes a phase change material and is in contact with the heat pipe. When heat quantities generated by the system are greater than a predefined reasonable thermal target, heat in excess of the thermal target is temporarily absorbed into the heat storage through the melting of the PCM. When the heat quantities generated by the system are again less than the thermal target, the PCM re-freezes, releasing the stored heat to be dissipated normally.

Thermal module with temporary heat storage

An add-on card for a personal digital assistant (PDA) for wireless communication includes a connector for connecting to the PDA, a power managing circuit connected to the connector for storing a first current supplied from the connector, and a radio-frequency (RF) circuit for transmitting an RF signal corresponding to a signal from the connector or transmitting a signal to the PDA via the connector according to a received RF signal. The power managing circuit is electrically connected to the RF circuit. When the RF circuit transmits the RF signal, the power managing circuit will provide a second current to the RF circuit.

Add-on card for wireless communication with power-managing circuit

A power supply includes a power supply unit having an input end for receiving an oscillating voltage, and an output end for outputting a steady state voltage from the oscillating voltage according to a feedback signal, and a control circuit having a micro-controller having a first input port for receiving a measuring signal from a load, and decision logic for generating a control voltage according to the measuring signal, and a feedback controller having a first input end electrically connected to the output end of the power supply for receiving the steady state voltage, a second input end electrically connected to the micro-controller for receiving the control voltage from the micro-controller, and a output end for outputting the feedback signal according to the control voltage and the steady state voltage.

Power supply for outputting a steady state voltage according to a load requirement

In an electronic device, a mobile communications device includes a housing having a first mounting surface disposed removably on an outer mounting surface of a casing body of a personal digital assistant, a battery pack having a second mounting surface disposed removably on the first mounting surface for supplying electric power to the mobile communications device, and a fastening unit for fastening releasably the battery pack on the housing. A first electrical connector provided on the outer mounting surface is connected electrically and detachably to a second electrical connector provided on the first mounting surface to permit signal transmission between the personal digital assistant and the mobile communications device. An engaging unit is provided on the outer mounting surface and the first mounting surface to permit engagement between the personal digital assistant and the mobile communications device when the first mounting surface is disposed on the outer mounting surface.

Electronic device including separable and independently operable personal digital assistant and mobile communications device

The present invention discloses a method a system for automatic executing work designation for office automation, which divides works obtained and resolved from meetings to increase office efficiency. At first, individual issues of executed work are divided and analyzed. The individual issues are identified whether for saving or sending an information of the individual issues to executors. The information of an individual issue is sent to a file management system when need to be saved. The information of individual issues are linked with a sending system when need to be sent. When the names of the executors are recognized, e-mail addresses or fax numbers of the executors are linked, the information of the individual issues are then sent to the e-mail addresses or the fax numbers of the executors.

Growing community of inventors

Taipei, Taiwan

Shao-Tsu Kung