Abstract: An electronic device including a sound receiver and a processor is provided. The sound receiver receives a sound signal provided by a sound generator. When the processor determines that an obstacle is blocked between the electronic device and the fixed device, the processor estimates a virtual position of the electronic device at a current time according to previous movement information and a previous position of the electronic device. The virtual position has a shortest path between a boundary position of the obstacle and the sound generator. The processor obtains a first relative distance between the electronic device and the boundary position according to the sound signal received by the sound receiver and the boundary position. The processor calculates a relative velocity and a relative acceleration of the electronic device relative to the fixed device at the current time according to the sound signal and the first relative distance.

Abstract: An electronic device including a sound receiver and a processor is provided. The sound receiver receives a sound signal provided by a sound generator. When the processor determines that an obstacle is blocked between the electronic device and the fixed device, the processor estimates a virtual position of the electronic device at a current time according to previous movement information and a previous position of the electronic device. The virtual position has a shortest path between a boundary position of the obstacle and the sound generator. The processor obtains a first relative distance between the electronic device and the boundary position according to the sound signal received by the sound receiver and the boundary position. The processor calculates a relative velocity and a relative acceleration of the electronic device relative to the fixed device at the current time according to the sound signal and the first relative distance.

Abstract: A projection device with an illumination adjustment function includes a polarization beam splitter (PBS), a display, a light source, a lens module, a power supply unit, a light detection unit and a power controller. The light source emits light to the PBS. The lens module projects the images to be displayed by the display. The power supply unit supplies power for the light source. The light detection unit acquires a digital value of a portion of the light transmitted from the PBS, and compares the digital value with a predetermined digital value to generate a control signal. The power controller adjusts power from the power supply unit to the light source according the control signal until the digital value matches the predetermined digital value of the light from the light source.

Abstract: An exemplary navigation device includes an input unit, a storage unit, a GPS detector, a driving recorder, a gyroscope, and a processor. The input unit is to receive user input. The storage unit stores map database comprising road maps. The positioning detector is to detect the geographical position of a vehicle. The driving recorder is to capture video. The gyroscope is to detect the turn angle of the vehicle. Firstly, the processor determines a driving route. Then, obtains the geographical position of the vehicle, obtains video, obtains road map, obtains turn angle of the vehicle, and determine the lane that the vehicle is in according to the captured video. Next, generates indications according to the determined driving route, the road map, the lane that the vehicle is in, the turn angle of the vehicle, and the geographical position of the vehicle.

Abstract: A product ordering system storing the information of 3D product models including data for forming each of the 3D product models and the scale of each of the 3D product models. A method for ordering a product using the system includes first capturing an image. Then, sensing the distance between the image capturing unit and the user, next, obtaining specific image data from the captured image according to one selected 3D product model, then, converting life size data needed to form a 3D model of the user according to the focus of the image capturing unit and the sensed distance. After that, generating a 3D model of the user according to the scale of the 3D product model, and overlaying the selected 3D product model with the 3D model of the user and displaying the combination for viewing by the user.

Abstract: An identity authentication method is applied on a system. The system is connected to an external storage device storing a first voice model. The system includes an information server and a terminal. The information server includes a database. The information server executes the following steps. First, receiving the first voice model transmitted by the terminal. Second, determining whether the first voice model matches one second voice model, and transmitting the verification result to the terminal. The terminal executes the following steps. First, generating a prompt to prompt the user to input voice signals. Second, receiving the input voice signals. Third, extracting voice features from the input voice signals. Fourth, determining whether the extracted voice features matches the first voice model. Fifth, determining the verification result is successful when matches, and determining the identity authentication is success only when two verification results are both successful.

Abstract: A projection device with a brightness adjustment function includes a polarization beam splitter (PBS), a light source, a reflective display, a lens module, a power supply unit, a light detection unit and a power controller. The light source emits light to the PBS. The PBS reflects a portion of the light to the reflective display, and transmits a remaining portion of the light. The lens module projects the images. The light detection unit acquires a digital value of a portion of the light reflected by the PBS that is not received by the reflective display, and compares the digital value with a predetermined digital value to generate a control signal. The power controller for adjusts power from the power supply unit to the light source according to the control signal until the digital value matches the predetermined digital value of the light from the light source.

Abstract: A voice control device includes a storage module, a voice recording module, and a processing module. The storage module stores a number of computerized voice commands. The voice recording module records audio signals of a user. The processing module processes the recorded voice signals to a machine readable command, determines whether the determined machine readable command matches one stored computerized voice command, and controls the device to execute a function according to the machine readable command if the determined machine readable command matches one stored computerized voice command. The processing module stores the determined machine readable command as a history command. The processing module further obtains all the history commands and determines which function the voice controlled device is to do according to the history commands if the determined machine readable command is partially the same as at least two of the stored computerized voice commands.

Abstract: A method for correcting keystone distortion is provided. The method is applied on a projector capable of correcting keystone distortion. The apparatus includes an angle detecting unit and a storage unit. The angle detecting unit detects an inclined angle and outputs a voltage value corresponding to the detected inclined angle. The storage unit stores a relationship between the inclined angles and the voltage values. The method includes determining the inclining angle according to the voltage value and the stored relationship; calculating the ratio of the length of the upper side of the projection area of a source image projected onto a projection surface to the length of the lower side of the projection area of a source image projected onto the projection surface, and inversing the ratio to determine a correction coefficient; and modifying the source image to display the source image onto the projection surface.

Abstract: An electronic device for transmitting warning information to a monitoring device is provided. The monitoring device includes a radio frequency transmitting unit transmitting a wireless signal. The electronic device includes a radio frequency receiving unit, a detector, a wireless transmitting unit, and a processor. The radio frequency receiving unit receives the wireless signal transmitted by the radio frequency transmitting unit when the distance between the radio frequency transmitting unit and the radio frequency receiving unit is less than a preset value. The detector detects the movement or the oscillation of the electronic device. The radio frequency receiving unit generates an anomalous potential to signal the processor to enable the detector when not receiving the wireless signal transmitted through the radio frequency transmitting unit.

Abstract: A projection device with a brightness adjustment function includes a polarization beam splitter (PBS), a light source, a reflective display, a lens module, a power supply unit, a light detection unit and a power controller. The light source emits light to the PBS. The PBS reflects a portion of the light to the reflective display, and transmits a remaining portion of the light. The lens module projects the images. The light detection unit acquires a digital value of a portion of the light reflected by the PBS that is not received by the reflective display, and compares the digital value with a predetermined digital value to generate a control signal. The power controller for adjusts power from the power supply unit to the light source according to the control signal until the digital value matches the predetermined digital value of the light from the light source.

Abstract: A projection device with a brightness adjustment function includes a display, a light source, a lens module, a power supply unit, a light detection unit and a power controller. The light source emits light to the display. The lens module projects the images to be displayed by the display. The power supply unit supplies power for the light source. The light detection unit acquires a digital value of a portion of the light from the light source that is not received by the display, and compares the digital value with a predetermined digital value to generate a control signal. The power controller adjusts power from the power supply unit to the light source according the control signal until the digital value matches the predetermined digital value of the light from the light source.

Abstract: A projection device with a brightness adjustment function includes a reflective display, a light source, a lens module, a power supply unit, a light detection unit and a power controller. The light source emits light to the reflective display. The lens module projects the images displayed by the reflective display. The reflective display is periodically rotated for reflecting the light to the lens module. The power supply unit supplies power for the light source. The light detection unit acquires a digital value of a portion of the light reflected by the reflective display that is not received by the lens module, and compares the digital value with a predetermined digital value to generate a control signal. The power controller adjusts power from the power supply unit to the light source according the control signal until the digital value matches the predetermined digital value of the light.

Abstract: A projection device with an illumination adjustment function includes a polarization beam splitter (PBS), a display, a light source, a lens module, a power supply unit, a light detection unit and a power controller. The light source emits light to the PBS. The lens module projects the images to be displayed by the display. The power supply unit supplies power for the light source. The light detection unit acquires a digital value of a portion of the light transmitted from the PBS, and compares the digital value with a predetermined digital value to generate a control signal. The power controller adjusts power from the power supply unit to the light source according the control signal until the digital value matches the predetermined digital value of the light from the light source.