Hon Hai Precision Industry Co., Ltd.

Chiun Mai Communication Systems, Inc.

Interface Optoelectronics (shenzhen) Co., Ltd.

General Interface Solution Limited

Interface Technology (chengdu) Co., Ltd.

Chun-Jen Chen

Duen-Yi Ho

Shou-Kuo Hsu

Tsung-Sheng Huang

Wei-Chieh Chou

Dan-Chen Wu

Hsien-Chuan Liang

Yung-Chieh Chen

Shen-Chun Li

Cheng-Hsien Lee

Tzu-Hsiang Lin

Chien-Hung Liu

Yu-Chang Pai

Po-Chuan Hsieh

Ying-Tso Lai

Shin-Ting Yen

Wen-Laing Tseng

Chun-Shan Hsiao

Chuan-Hsien Cheng

Hsiao-Yuan Lee

Nan-Tsun Kuo

Ying Tso

Chia-Ming Hsieh

An electronic device includes a first microphone, a second microphone, a sensing unit, and a control unit. The first and second microphones are respectively positioned at two different sides of the electronic device. The sensing unit is configured to sense a first light value of a first side of the electronic device, a second light value of a second side of the electronic device and an orientation of the electronic device. The control unit is configured to select one of the first microphone and the second microphone to work according to the first and second light values and the orientation of the electronic device.

Microphone switching method and electronic device using same

A cover window is provided and includes a substrate and a coating layer. The substrate has a thickness of 60 to 120 &#x3bc;m. The substrate has a Re of 6000 to 12000. The coating layer is coated on the substrate. The cover window has a first direction and a second direction. The first direction is a machine direction of the cover window. The second direction is perpendicular to the first direction. A tensile stress of 50 to 130 MPa is exerted in the first direction. A tensile stress of 140 to 300 MPa is exerted in the second direction. Since the substrate has a Re of 6000 to 12000, a penetrating ray of an incident ray is uniformly distributed on a visible region of the cover window, so as to reduce the phase difference between reflected rays, reduce rainbow patterns, and enhance visibility under a polarizer.

Cover window

The disclosure provides a flexible polarizer, including a polarizing layer, a first protective layer, and a second protective layer. The polarizing layer has a first surface and a second surface opposite to each other. The first protective layer is disposed on the first surface and comprises polyvinylidene difluoride (PVDF) or a kind of high phase retardation plastics. The second protective layer is disposed on the second surface and comprises PVDF or a kind of the high phase retardation plastics. The first protective layer, the second protective layer, and the polarizing layer are configured to be bent along a bend line.

Flexible polarizer and flexible touch display

An external sound box includes a connecting member and a sound box. The connecting member includes a sound passage and is selectively attachable to a surface of an electronic device to cover a sounding hole of the electronic device. The sound box is mounted to the connecting member. The sound box defines a resonant chamber communicating with the sound passage and a sounding output hole. Sound generated by the electronic device moves from the sounding hole into the sound passage and the sound box. The sounding passage and the sound box are configured so that the sound from the sounding hole resonates before exiting the sound output hole with increased volume.

External sound box, loudspeaker module with same and electronic device

A method for calculating efficiency of a power supply system includes: displaying a parameter selection interface on the display unit for selecting power supply parameters and transmission line parameters. Obtaining power supply parameters and transmission line parameters selected by the user via the parameter selection interface when determining the user has finished the selection. Determining a efficiency of a selected power supply of the power supply parameters according to the relationship table, and calculating a sum efficiency according to the obtained power supply parameters and the transmission line parameters and the efficiency of the selected power supply. And calculating a total efficiency of the power supply system according to each sum efficiency when determining that all of the power supplies of the power supply system have been selected.

Electronic device and method for calculating efficiency of simulative power supply system

In a computing device, a computerized method and a non-transitory storage medium are applied in checking whether the transmission lines in a stored wiring diagram meet a certain criterion in relation to vias in the routes of differential pairs. A transmission line is selected to determine whether or not the line belongs to a differential pair and passes through at least one via. Another transmission line of the differential pair is obtained for analysis when the selected transmission line passes through at least one via. Sizes of vias in the respective routes of the differential pair are compared and a distance between the vias of the differential pair is compared. The differential pair, and the sizes of vias which comply or do not comply with the criterion are recorded and displayed in a list of results.

Computing device and method for automatically checking wiring information

A system and method for checking a ground via of control chips of a printed circuit board (PCB) provides a graphical user interface (GUI) displaying a layout of the PCB. The control chip has a plurality of ground pins. The computer searches for signal path routing of each ground pin and ground vias along each signal path routing of each ground pin. If there are any ground vias having the same absolute coordinates, the computer determines that the ground vias are shared by more than one ground pin.

System and method for checking ground vias of a controller chip of a printed circuit board

A power supply device includes a power supply unit and a feedback control unit. The power supply unit is configured for generating an electric potential to be provided to a load. The feedback control unit detects the electric potential and adjusts relevant parameters of the electrical potential to achieve predetermined values. The feedback control unit includes a first feedback circuit and a second feedback circuit electrically connected in series.

Power supply device

A current balance circuit includes a first and a second current sensors, an averager, a first and a second control modules, and a first and a second rheostat elements. The first and second current sensors receive a first current and a second current from a power source respectively and convert the first and second currents into a first and a second voltages. The averager receives the first and second voltages and calculates to obtain an average voltage. The first and second control modules receive the first voltage, the second voltage, and the average voltage, to obtain a first and a second control signals, to control current conduction ability of the first and second rheostat elements, to make the first and second currents keep a dynamic balance.

Current balance circuit to keep dynamic balance between currents in power passages of power connector

In a method for checking layout of a printed circuit board (PCB) using an electronic device, a power line is selected from a layout diagram of the PCB. The method searches for one or more signal lines which are overlapping with the selected power line from the layout diagram of the PCB. The method further locates attribute data of the searched signal lines and the selected power line in the layout diagram of the PCB, and displays the attribute data of the searched signal lines and the selected power line on a display device of the electronic device.

Electronic device and method for checking layout of printed circuit board

An electronic device reads a layout file of a printed circuit board (PCB) to be manufactured from a storage device, obtains length information and section area information of copper cladding distributed on power source areas and ground trace areas in each of one or more layers of the PCB to be manufactured by analyzing the layout file, and calculates power loss in each of the one or more layers according to the length information, the section area information, a resistance value of the copper cladding, and preset parameters of a power supply module and an integrated circuit (IC) load to be located on the PCB. In response to a determination that the power loss in the layer exceeds a preset range, the electronic device indicates the locations of the power source areas and the ground trace areas of a layer in the PCB layout file which need to be redesigned.

Electronic device and simulation method for checking printed circuit board power loss

A printed circuit board includes a top layer and a bottom layer. A power supply and an electronic component are located on the top layer. The power supply is connected to the top layer and the bottom layer through a first via. A number of second vias extends through the top layer and the bottom layer, and is electrically connected to the top layer and the bottom layer. A right-angled triangular void area without vias defined therein is formed on the printed circuit board, between the second vias and the electronic component. The second vias are arranged on a hypotenuse of the void area.

Printed circuit board

A voltage regulating circuit includes a pulse width modulation controller, a current sense circuit, a voltage feedback circuit, and a gain-and-bias circuit. The current sense circuit includes an inductor and a capacitor. The voltage feedback circuit includes first and second resistors. The gain-and-bias circuit includes an operational amplifier. A first terminal of the capacitor is connected to an inverting input terminal of the operational amplifier through a third resistor. A second terminal of the capacitor is connected to a non-inverting input terminal of the operational amplifier through a fourth resistor. The inverting input terminal of the amplifier is connected to an output terminal of the operational amplifier through a fifth resistor. The non-inverting input terminal of the operational amplifier is grounded through a sixth resistor. The output terminal of the operational amplifier is connected to the node between the first and second resistors through a seventh resistor.

Voltage regulation circuit

A computing device reads a printed circuit board (PCB) layout file from a storage device. The PCB layout file includes arrangement information of signal lines, power lines, and power through-holes arranged on a PCB. Furthermore, the computing device sets a reference distance between a selected power through-hole and a neighboring signal line, and searches for one or more line segments of one or more signal lines where the a distance between each of the one or more line segment and the selected power through-hole is less than the reference distance.

Computing device and method for checking design of printed circuit board layout file

A printed circuit board (PCB) includes first to fourth layers. A power supply is arranged on the first layer. An electronic component is arranged on the fourth layer. A first via and a second via extend through the PCB and are electrically connected to the electronic component. The PCB further includes third to seventh vias. A length of a transmission path of the current flows from the power supply to electronic component through the third via and the seventh via is almost the same as a length of a transmission path of the current flows from the power supply to the electronic component through the fourth to sixth vias.

Growing community of inventors

Taipei Hsien, Taiwan

Chun-Jen Chen