Abstract: A projection apparatus and an image calibration method thereof are provided. The image calibration method of the projection apparatus includes: transmitting N optical pulse signals to N calibration reference points on a projection plane respectively, wherein N is greater than or equal to 2; receiving N reflected optical pulse signals that are generated by reflecting the optical pulse signals; and respectively calculating time intervals between pulse waves of the optical pulse signals and the corresponding reflected optical pulse signals to obtain N time differences, thereby performing an image calibration.

Abstract: An image projection system includes a scaler IC, a micro-projector, a video connector, and a controller. The video connector is coupled to the scaler IC and the micro-projector. The controller controls the video connector and the scaler IC to form a first signal path mode and a second signal path mode. The video connector transmits a first image signal from the scaler IC for external displaying in the first signal path mode. The video connector receives a second image signal from a peripheral device and passes the second image signal to the micro-projector for projection in the second signal path mode.

Abstract: A depth sampling method for an optical apparatus is provided. The optical apparatus includes an optical scanning module and an optical detecting module. The optical scanning module generates plural projection points along plural scan lines on a projection surface according to a sequence signal. The depth sampling method includes the following steps. Firstly, the plural scan lines are divided into at least two scan line groups. Then, plural first sampling points of a first scan line of one of the scan line groups are determined. Then, plural second sampling points of a second scan line of the scan line group are determined. There are relative shifts between the plural first sampling points and the plural second sampling points along a scan line direction.

Abstract: A projection apparatus and an image calibration method thereof are provided. The image calibration method of the projection apparatus includes: transmitting N optical pulse signals to N calibration reference points on a projection plane respectively, wherein N is greater than or equal to 2; receiving N reflected optical pulse signals that are generated by reflecting the optical pulse signals; and respectively calculating time intervals between pulse waves of the optical pulse signals and the corresponding reflected optical pulse signals to obtain N time differences, thereby performing an image calibration.

Abstract: A portable electronic device with a projecting function and a projecting method are provided. The portable electronic device includes a posture sensor, a projection lens, and a controller. The posture sensor is used for detecting the orientation information of the portable electronic device. The projection lens is used for projecting a source image as a projection image. The controller is electrically connected with the posture sensor and the projection lens for judging an orientation status of the portable electronic device according to the orientation information. According to the orientation status of the portable electronic device, an approach of producing the projection image is correspondingly adjusted.

Abstract: A system for managing medical information includes a host device for installation at a first location, an image capturing device, and an end device for installation at a second location. The host device encodes medical information into a barcode, and outputs the barcode to an information carrier. The image capturing device captures an image of the barcode on the information carrier so as to create a barcode image. The end device decodes the barcode image for obtaining the medical information encoded by the host device.

Abstract: Disclosed is a time-to-digital (TDC) converter comprising an analog voltage source. An analog-to-digital converter quantizes two voltage samples in response to receiving a first input signal at a first time t1 and a second input signal at a second time t2. The first and second digital signals are combined to produce a digital signal that represents the difference (t2?t1).

Abstract: Circuitry to remove switches from signal paths in integrated circuit programmable gain attenuators. Programmable gain attenuators and programmable gain amplifiers commonly switch between signal levels using semi-conductor switches. Such switches may introduce non-linearities in the signal. By isolating the switches from the signal path linearity of the PGA can be improved.

Abstract: Frequency multipliers having corresponding methods and multifunction radios comprise: N multipliers, wherein N is an integer greater than one; wherein the multipliers are connected in series such that each of the multipliers, except for a first one of the multipliers, is configured to mix a periodic input signal with an output of another respective one of the multipliers; wherein the first one of the multipliers is configured to mix the periodic input signal with the periodic input signal.

Abstract: A computer system is provided. The computer system comprises system and peripheral hardware devices, a display device and a chip. The display device comprises a display panel and an on-screen display (OSD) control module. The chip comprises a computer system environment information monitoring module, a control connection interface and a control module. The computer system environment information monitoring module monitors computer system environment information according to the system and peripheral hardware devices. The control connection interface is electrically connected to the OSD control module. The control module is electrically connected to the computer system environment information monitoring module and the control connection interface to control the OSD control module through the control connection interface according to the computer system environment information to further control the display function of the display panel.

Abstract: A hybrid simulation model includes a real model, a bus interface and an acceleration model. The real model simulates a group of instructions. The acceleration model includes a trace generation unit, a trace replay unit, a selection unit, a snapshot generation and load unit and a virtual breakpoint control unit. The trace generation unit records at least one trace file of the real model in a first simulation. The trace replay unit reads and accordingly accesses the at least one trace file. The selection unit dynamically switches to perform a real simulation or a trace simulation. The snapshot generation and load unit generates at least one status snapshot file and loads the at least one status snapshot file to the real model in repeated simulations. The virtual breakpoint control unit controls the selection unit to switch between the trace simulation and the real simulation according to a virtual breakpoint.

Abstract: An image projection system includes a scaler IC, a micro-projector, a video connector, and a controller. The video connector is coupled to the scaler IC and the micro-projector. The controller controls the video connector and the scaler IC to form a first signal path mode and a second signal path mode. The video connector transmits a first image signal from the scaler IC for external displaying in the first signal path mode. The video connector receives a second image signal from a peripheral device and passes the second image signal to the micro-projector for projection in the second signal path mode.

Abstract: A thermal protection circuit to protect an electronic device from over-heat comprises a temperature sensor, a hysteresis comparator and a switch circuit. The temperature sensor senses internal temperature of the electronic device and output an internal temperature signal with voltage. The hysteresis comparator outputs a power-off signal when the voltage of the internal temperature signal is lower than a low voltage threshold representing an a determined temperature, or outputs a power-on signal when the voltage of the internal temperature signal is higher than a high voltage threshold representing a restarting temperature. The switch circuit stops transmitting power signals to the electronic device in response to the power-off signal, or continues to transmit the power signals to the electronic device in response to the power-on signal.

Abstract: A performance scaling device, a processor having the same, and a performance scaling method thereof are provided. The performance scaling device includes an adaptive voltage scaling unit, a latency prediction unit, and a variable-latency datapath. The adaptive voltage scaling unit generates a plurality of operation voltages and transmits the operation voltages to the variable-latency datapath. The variable-latency datapath operates with different latencies according to the operation voltages and generates an operation latency. The latency prediction unit receives the operation latency and a system latency tolerance and generates a voltage scaling signal for the adaptive voltage scaling unit according to the operation latency and the system latency tolerance. The adaptive voltage scaling unit outputs and scales the operation voltages thereof according to the voltage scaling signal.

Abstract: Disclosed is a time-to-digital (TDC) converter comprising an analog voltage source. An analog-to-digital converter quantizes two voltage samples in response to receiving a first input signal at a first time t1 and a second input signal at a second time t2. The first and second digital signals are combined to produce a digital signal that represents the difference (t2?t1).

Abstract: Aspects of the disclosure provide a local oscillator (LO) circuit that includes a first phase locked loop (PLL) circuit and a second PLL. The first PLL circuit is configured to generate a first oscillation signal having a first frequency based on a reference signal having a reference frequency. The second PLL circuit is configured to receive the first oscillation signal and generate a second oscillation signal having a second frequency based on the first oscillation signal.

Abstract: A transceiver front-end provides an interface between a transmission medium and transmitter, and between a transmission medium and receiver. The transceiver front-end includes a hybrid circuit, a high-pass filter, and a gain stage, that permits the reduction or the complete elimination of buffer amplifiers. Buffer amplifiers can be eliminated because the hybrid circuit and/or the high-pass filter are adapted so that they can be directly connected to each other, without a loss in circuit performance. Furthermore, the high-pass filter and/or the gain stage are also adapted so they can be directly connected. As such, the transceiver front-end can be constructed using all passive components, reducing or eliminating excess heat generation.

Abstract: Frequency multipliers having corresponding methods and multifunction radios comprise: N multipliers, wherein N is an integer greater than one; wherein the multipliers are connected in series such that each of the multipliers, except for a first one of the multipliers, is configured to mix a periodic input signal with an output of another respective one of the multipliers; wherein the first one of the multipliers is configured to mix the periodic input signal with the periodic input signal.

Abstract: A gas mixing apparatus including a chamber, a filter, a gas transmitting unit and a porous layer is provided. The chamber includes a gas inlet and a gas outlet. The filter, which has at least one opening, is disposed at the gas outlet of the chamber. An environmental gas outside the chamber is filtered and becomes a clean gas after flowing through the filter into the chamber. The gas transmitting unit is connected to the opening of the filter to transmit a gas to be mixed into the chamber through the opening. The porous layer is disposed at the gas outlet. The gas to be mixed is mixed with the clean gas and leaves the chamber through the porous layer.

Abstract: A hybrid simulation model includes a real model, a bus interface and an acceleration model. The real model simulates a group of instructions. The acceleration model includes a trace generation unit, a trace replay unit, a selection unit, a snapshot generation and load unit and a virtual breakpoint control unit. The trace generation unit records at least one trace file of the real model in a first simulation. The trace replay unit reads and accordingly accesses the at least one trace file. The selection unit dynamically switches to perform a real simulation or a trace simulation. The snapshot generation and load unit generates at least one status snapshot file and loads the at least one status snapshot file to the real model in repeated simulations. The virtual breakpoint control unit controls the selection unit to switch between the trace simulation and the real simulation according to a virtual breakpoint.