Abstract: A projection apparatus, an illumination apparatus thereof, and a light source driving method thereof are provided. A control module converts a bit control signal into first light source timing signals, converts the first light source timing signals into second light source timing signals according to a lookup table, generates a driving current corresponding to each light source according to the lookup table, outputs second light source driving signals corresponding to the light sources according to the second light source timing signals. The lookup table includes a driving current ratio corresponding to the light sources. A driving module drives the light sources according to the second light source driving signals and the driving current for the light sources to have overlapping light-emitting timings.

Abstract: A projection system and a control method thereof are provided. The projection system includes a projection module, a mmWave sensor, and a control circuit. The projection module projects an image beam to a projection surface. The mmWave sensor is configured to sense an object entering a sensing range and obtain a sensing result. The control circuit is coupled to the projection module and the mmWave sensor, and the control circuit controls the projection module to provide the image beam according to the sensing result of the mmWave sensor.

Abstract: A projection apparatus, an illumination apparatus thereof, and a light source driving method thereof are provided. A control module converts a bit control signal into first light source timing signals, converts the first light source timing signals into second light source timing signals according to a lookup table, generates a driving current corresponding to each light source according to the lookup table, outputs second light source driving signals corresponding to the light sources according to the second light source timing signals. The lookup table includes a driving current ratio corresponding to the light sources. A driving module drives the light sources according to the second light source driving signals and the driving current for the light sources to have overlapping light-emitting timings.

Abstract: A Bluetooth device used for data transmission between first and second peripheral devices is provided. The Bluetooth device includes a processing circuit and a Bluetooth chip configured to be capable of being operated in a transmitting mode and a receiving mode for data transmitting and data receiving, respectively. In the transmitting mode, a first communication link is established between the Bluetooth chip and the first peripheral device through a first communication protocol. The processing circuit establishes a second communication protocol. In the receiving mode, a second communication link is established between the Bluetooth chip and the second peripheral device through a third communication protocol. The second peripheral device transmits a data to the Bluetooth chip through the second communication link and the Bluetooth chip transmits, based on the second communication protocol, the received data to the first peripheral device through the first communication link simultaneously.

Abstract: A Bluetooth device used for data transmission between first and second peripheral devices is provided. The Bluetooth device includes a processing circuit and a Bluetooth chip configured to be capable of being operated in a transmitting mode and a receiving mode for data transmitting and data receiving, respectively. In the transmitting mode, a first communication link is established between the Bluetooth chip and the first peripheral device through a first communication protocol. The processing circuit establishes a second communication protocol. In the receiving mode, a second communication link is established between the Bluetooth chip and the second peripheral device through a third communication protocol. The second peripheral device transmits a data to the Bluetooth chip through the second communication link and the Bluetooth chip transmits, based on the second communication protocol, the received data to the first peripheral device through the first communication link simultaneously.

Abstract: A projection apparatus including a digital micro mirror device (DMD), a light source, a lens, a photoelectric conversion device, a decision device and an adjustment module is provided. When the DMD is switched to a first operating state, the DMD reflects a light beam emitted by the light source to the lens. When the DMD is switched to a second operating state, the DMD reflects the light beam to the photoelectric conversion device. The photoelectric conversion device generates a signal value according to a light intensity of the light beam. The decision device compares the signal value with a predetermined value. When the signal value is smaller than the predetermined value, the decision device generates a driving signal value. The driving signal value is used for driving the adjustment module to sequentially adjust a position of the light source along a plurality of axes.

Abstract: An optical device is capable of controlling a projector, wherein the projector is capable of wirelessly receiving an image signal from a data source, combining an identification signal into the image signal to generate a projection signal, and projecting a projection image according to the projection signal. The optical device includes an optical sensor. The optical sensor is capable of sensing the identification signal of the projection image, outputting a detection signal corresponding to the identification signal and wirelessly transmitting the detection signal to the projector. A projection system including a projector and an optical sensor is provided as well.

Abstract: A projection apparatus including a digital micro mirror device (DMD), a light source, a lens, a photoelectric conversion device, a decision device and an adjustment module is provided. When the DMD is switched to a first operating state, the DMD reflects a light beam emitted by the light source to the lens. When the DMD is switched to a second operating state, the DMD reflects the light beam to the photoelectric conversion device. The photoelectric conversion device generates a signal value according to a light intensity of the light beam. The decision device compares the signal value with a predetermined value. When the signal value is smaller than the predetermined value, the decision device generates a driving signal value. The driving signal value is used for driving the adjustment module to sequentially adjust a position of the light source along a plurality of axes.

Abstract: An optical device is capable of controlling a projector, wherein the projector is capable of wirelessly receiving an image signal from a data source, combining an identification signal into the image signal to generate a projection signal, and projecting a projection image according to the projection signal. The optical device includes an optical sensor. The optical sensor is capable of sensing the identification signal of the projection image, outputting a detection signal corresponding to the identification signal and wirelessly transmitting the detection signal to the projector. A projection system including a projector and an optical sensor is provided as well.

Abstract: A driving method includes setting resistances of resistors in three driving circuits according to maximum tolerable currents corresponding to RGB LEDs respectively, using a PWM module to drive the RGB LEDs respectively in turn with a frequency higher than a visual persistence frequency, using a light sensor to detect light generated by the RGB LEDs and to output a detecting signal, and controlling the PWM module to adjust a luminous intensity of at least one LED in the RGB LEDs according to the detecting signal.

Abstract: A projection device includes a light source for providing a light beam, a light valve device installed on an optical path of the light beam, and a projection lens. The light valve device includes a light valve having an incident surface and a dust-off device. The light beam projects to the incident surface, and the incident surface reflects the light beam to form an image light beam. The dust-off device is installed on the light valve for sealing the incident surface for preventing dust from falling on the light valve. The dust-off device includes a vibrator for removing dust thereon by vibration for preventing dust from affecting the quality of projection images. The projection lens is used for projecting the image light beam out of the projection device.

Abstract: An auto-turning on/off module is used for controlling projection apparatus to process an auto-turning on/off action according to an auto-turning on/off procedure and comprises a first central processing unit, a second central processing unit and a memory. The first and the second central processing unit are disposed in the projection apparatus and electrically coupled with each other. Furthermore, the memory is electrically coupled with the first central processing unit and/or the second central processing unit to use for recording an execution state of the auto-turning on/off immediately. Besides, an auto-turning on/off method is to turn on the projection apparatus first and then to input a turning on/off parameter into the projection apparatus to build the auto-turning on/of procedure. Thereafter, it is to execute the auto-turning on/off procedure and record the execution state of the auto-turning on/off immediately through the memory.

Abstract: A part number request processing system and method is provided which allows a part number requester to efficiently obtain the verification of the part quality. The system resides in a server having a part specification database for storing a plurality of part specification label having part information and corresponding supplier information and a part test database for storing a plurality of part test records having part information and corresponding part test information. When the server receives a request, it extracts the part number specification information and test results to verify if the parts requested meet the standard, if not met, the supplier is assessed; oppositely, if met the purchase request is sent to the supplier. After delivery of the parts, test information is entered into the server via a network system to update the part specification information and part test information to provide the verification of the part purchase request.

Abstract: An infrared transmitting frame on a back holder of a keyboard includes an infrared transmitting frame disposed on a back holder of a keyboard; wherein the transmitting frame has a set of swivel discs fixed on the back holder; a link is pivotally disposed on the swivel disc by a shaft pin for lifting upwardly; the link has a plurality of segments; the segments are connected by shafts to be bendable; a distal end of the link is a fixing seat provided for an infrared transmitter; wherein the infrared transmitter has a conducting wire disposed along the link, passing the swivel disc and connecting into a guide slot and further into a main body of the keyboard. The present invention is characterized that the swivel disc allows the infrared transmitting frame to be adjusted to any projecting angle within 360° so as to accommodate the application of personal digital assistants in various types.

Abstract: A connecting shaft assembly used between first and second halves of an electronic device, comprises a bracket defining first and second end portions opposite to each other. A pair of first shaft members spaced from one another extends outward from the first end portion; and a pair of second shaft members spaced from one another extends from the second end portion. An electrical device configured by first and second halves pivotally and electrically coupled by the connecting shaft assembly.