摘要:
A light emitting diode driving system with precise timing switched dimming control used for driving light emitting diode elements is provided, which comprises a power detection unit, a timer control logic, a light emitting diode dimming driver, and a power supply unit being able to overcome different conditions of power source, switch leakage, and system elements to design the timer dimming with steady and precise working status, and solve problems of each of the independent systems which are not synchronized due to imprecisely timed under power-off condition, while providing various dimming mode for users, and a dimming method using aforementioned LED driving system.
摘要:
A programmable optical pointing device. A read/write storage chip stores control code, and an integrated chip includes a photo sensor array and a control circuit. The control circuit reads the control code from the read/write storage chip and accordingly drives the photo sensor array to detect images on an operating surface.
摘要:
The present invention provides a method for increasing a report rate of a wireless mouse for decreasing delay time of the wireless mouse, which includes: selecting a packet mode from a plurality of packet modes and inputting data corresponding to the selected packet mode for forming a packet according to control signals inputted into the wireless mouse; and outputting the packet through a radio-frequency channel. The present invention further provides a method for reducing power consumption of a mouse, which includes: detecting a moving speed of the mouse; and transmitting packets with a low report rate when the moving speed of the mouse is less than a default value.
摘要:
A method for increasing a report rate of a wireless mouse for decreasing delay time of the wireless mouse includes selecting a packet mode, inputting data corresponding to the selected packet mode according to control signals inputted into the wireless mouse, performing a first error check operation according to a first data, performing a second error check operation according to the first error check operation and the inputted data, forming an error check block according to the second error check operation, forming a packet according to the error check block and the inputted data, and outputting the packet through a radio-frequency channel.
摘要:
A programmable optical pointing device. A read/write storage chip stores control code, and an integrated chip includes a photo sensor array and a control circuit. The control circuit reads the control code from the read/write storage chip and accordingly drives the photo sensor array to detect images on an operating surface.
摘要:
A control system for a feedback controlled LED driving circuit, which includes a valley detect regulator unit and a control and feedback unit. The valley detect regulator unit detects a sine-like DC voltage input by a rectification unit, and stores the electric energy in the storage capacitor when the input voltage is lower than a preset valley voltage. The stored electric energy converted into the system required voltage by a system power supply unit. The control and feedback unit electrically connect to the feedback controlled LED driving circuit, providing PFC, step dimming or color temperature adjustment for driving the LED light-emitting element and detecting a feedback signal of the LED driver circuit for controlling an output current of the LED driver circuit or providing protective measures.
摘要:
The present invention discloses a LED controlling driver comprising light emitting diodes and a detection-control module and a power supply unit in addition to the light source. The detection-control module includes a power/blinking control unit and a LED driver IC. The power supply unit outputs power to the light source and the detection-control module and provides different switching information so that the LED drive unit of the detection-control module is controlled by power/blinking control signals. Further, a power switch enables the power supply unit to output the corresponding switching information to the detection-control module based on switching actions inputted by a user so that the user only needs to simply switch the power switch to achieve the goal of switching power levels or blinking states of the LED.
摘要:
An integrated chip of a mobile device includes a substrate, a modulator installed on the substrate for modulating a voice signal, a transmitter installed on the substrate and coupled to the modulator for transmitting the modulated voice signal by radio, and a controller installed on the substrate and coupled to the modulator and the transmitter for controlling the modulator and the transmitter.
摘要:
An integrated circuit chip includes an image sensor and a backend processing module. The image sensor is adapted for generating an image output corresponding to a captured image. The backend processing module is coupled to the image sensor, and includes an image processing unit for digital processing of the image output from the image sensor to result in a digital image output, and a peripheral control unit coupled to the image processing unit for converting the digital image output into a data transmission standard format for subsequent output.
摘要:
An input device for screen navigation. The input device includes a light source for emitting light onto a surface over which the input device move, a power port for receiving electric power to operate the input device, and an optical module. The input device includes, a voltage regulator formed on a substrate for regulating the voltage of electric power to the desired level, an optical imaging module formed on the substrate for capturing successive images of the surface and producing imaging signals corresponding to the captured images, a motion determining circuit formed on the substrate for producing a motion signal of the input device based on the successive imaging signals, and a modulating circuit formed on the substrate for modulating the motion signal. The input device also includes a RF module for transforming the modulated motion signal into a RF signal to be transmitted to a receiver for screen navigation.