Abstract: A picture generation unit comprises a light emitter array that is disposed on a substrate and provides a projection imaging light. The light emitter array includes a plurality of light emitting units. Each of the light emitting units includes a plurality of mini LED chips. An electronic control unit is electrically coupled to the substrate to control the mini LED chips to generate the projection imaging light. The light emitter array may emit light as well as present controllable images simultaneously. Because the picture generation unit abandons using the conventional backlight source and the module thereof, it can effectively utilize light energy and reduce radiation heat/waste heat. A vehicular head-up display system using the picture generation unit may improve operation reliability thereof.

Abstract: A vehicular head-up display system provides a driver with two virtual images in different image distances, wherein each of the virtual images utilizes all pixels of a single image source. Linearly polarized light beams, which are emanated from the image source, pass through a dynamic polarization converter, whereby to form two image light beams with orthogonal polarization states that are switched fast for time-multiplexing. The two image light beams are selected by a polarization selection component for transmission and reflection respectively. The reflected image light beam is handled by an optical relay component to form an intermediate image. A curved mirror reflects the two image light beams to a virtual image reflecting surface to form two virtual images in different virtual image distances in respect to eyes of a driver in front of the virtual image reflecting surface.

Abstract: An automotive head-up display system with an ordinary windshield comprises an ordinary windshield and a display device, wherein the distance between the inner surface and the outer surface of the ordinary windshield is equal across the ordinary windshield, and the inner surface and the outer surface are non-processed and free of any optical film. The display device includes an image source and an optical imaging module. Compared with the traditional technologies, the automotive head-up display system with an ordinary windshield of the invention can effectively solve the ghost/double image problem and reduce the assembling and production costs of the automotive head-up display system without using the wedged windshield or any optical film.

Abstract: An automobile head-up display system includes a windshield and a display device, wherein the display device comprises a single picture generation unit and an optical imaging module. The picture generation unit is set inside an automobile body to generate a first imaging light and a second imaging light. The optical imaging module is arranged at the light-output side of the picture generation unit to reflect the first imaging light onto a surface of a windshield via a first optical path and reflect the second imaging light onto the surface of the windshield via a second optical path. In this manner, a first virtual image and a second virtual image are generated, wherein the distance of the first optical path is smaller than the distance of the second optical path.

Abstract: An automotive head-up display system with an ordinary windshield comprises an ordinary windshield and a display device, wherein the distance between the inner surface and the outer surface of the ordinary windshield is equal across the ordinary windshield, and the inner surface and the outer surface are non-processed and free of any optical film. The display device includes an image source and an optical imaging module. Compared with the traditional technologies, the automotive head-up display system with an ordinary windshield of the invention can effectively solve the ghost/double image problem and reduce the assembling and production costs of the automotive head-up display system without using the wedged windshield or any optical film.

Abstract: A circuitry for measuring a time interval with ring oscillator has a ring oscillator formed by a plurality of delay switching units, a counter and an encoder. Wherein, the ring oscillator generates a plurality of oscillating signals when receives a pulse signal used to turn on or turn off the ring oscillator. The counter can count the numbers of the oscillating signal during an active period of the pulse signal to generate a counting value. In addition, the encoder encodes the oscillation signals generated by a plurality of delay switching unit with a certain interval of delay time. Therefore, when the pulse signal is disabled to lead to turn off the ring oscillator, one can obtain the time interval of the pulse signal based on the encode data and the counting value.

Abstract: A circuitry for measuring a time interval with ring oscillator has a ring oscillator formed by a plurality of delay switching units, a counter and an encoder. Wherein, the ring oscillator generates a plurality of oscillating signals when receives a pulse signal used to turn on or turn off the ring oscillator. The counter can count the numbers of the oscillating signal during an active period of the pulse signal to generate a counting value. In addition, the encoder encodes the oscillation signals generated by a plurality of delay switching unit with a certain interval of delay time. Therefore, when the pulse signal is disabled to lead to turn off the ring oscillator, one can obtain the time interval of the pulse signal based on the encode data and the counting value.

Abstract: A vehicle collision avoidance warning device comprising a sensing module for detecting engine RPM, fuel throttle depress level, vehicle speed, and relative distance; a fuzzy logic controller coupled to the sensing module for receiving the engine RPM, throttle index, vehicle speed, and relative distance and generating a safety distance value using fuzzy logic; a safety warning device coupled to the fuzzy logic controller and the sensing module for comparing the distance with the safety distance and outputting a warning signal according to the comparison result.

Abstract: A vehicle impact severity identification device comprises an acceleration detector for generating a vehicle impact acceleration signal. The impact severity identification circuit uses the acceleration signal generated by the acceleration detector and generates an impact severity identification signal at its output port. During an frontal impact, when the acceleration signal exceeds a predetermined start value, the impact severity identification circuit will identify whether the impact is a severe impact based upon a displacement generated from the acceleration signal during a predetermined period.

Abstract: An adaptive activation control device for an occupant restraint system of a vehicle is provided that includes an electrical energy reserve circuit, an electronic accelerometer, a microprocessor unit, an electromechanical impact sensor, a firing circuit control unit, and a warning light driving circuit. The restraint system activation is determined by the two kinds of impact sensors. The first of the sensors is the electronic accelerometer, which provides analog output signals that are converted into digital signals. Then, the digital signals are processed by an algorithm in the microprocessor unit. Finally, the activation of the occupant restraint system will be determined by the adaptive triggering threshold. The second of the sensors is the electromechanical impact sensor. The impact sensor is connected in series with the firing circuit for higher safety. Both of the sensors have to operate normally in order for the adaptive control unit to work properly.