52 results about "Reverse video" patented technology

A method of displaying a shot image on a car reverse video system is described, which is applicable for adjusting an image displaying angle of the car reverse video system with a fixed lens according to a distance from an obstacle. Firstly, a scene image behind the car is shot through using the lens. Then, a distance detector is activated to detect a distance from the obstacle behind the car. If the distance from the obstacle is smaller than a preset distance, a scaling ratio is set according to a ratio of the preset distance to the distance from the obstacle. Finally, according to the scaling ratio and a distance between each pixel in the scene image and a reference point, all pixel pitches are adjusted, such that the scene image is deformed, and thus achieving an effect of switching a viewing angle of the scene image.

A pixel bias current supply for supplying a stable source of bias current to pixels of an imager includes a current bypass feature for improving stability when one or more pixels of an imager saturates. The pixel bias current supply also features voltage limiters to restrict the output voltage of a pixel in order to prevent reverse video from being output when very strong light is incident upon one or more pixels.

It is disclosed a video processing method for generating a reverse video stream from an original video stream. Coded frames of the original video stream are buffered and decoded, whereby a reverse video stream is generated wherein the decoded frames are organized according to an order which is opposite to the display order of the original video stream. According to the method, a frame to be displayed is selected (602) between frames of the original video stream, selection of the frame being made based on the frames display order of the reverse video stream. The method further provides for checking (702-703) in a list of decoded frames if all reference frames of the original video stream necessary to decode the selected frame have already been decoded and the relative decoded frames are actually buffered. If all reference frames have been decoded and are actually buffered, then the selected frame is decoded. If not all reference frames have been decoded and are actually buffered, the method provides for decoding (706-707) all reference frames of the selected frame that are not in the list of decoded frames and buffering the relative decoded reference frames, wherein if no buffer memory is available for buffering one decoded frame, the buffer storing the oldest decoded frame not present in a list of frames to be displayed (1000) and not storing a reference frame for the selected frame is released and the decoded frame is buffered in the released buffer (901-912). Once the selected frame is decoded and buffered, a list of frames to be displayed is updated (604) with order information for outputting the decoded selected frame as a frame of the reverse video stream. A next video frame of the original video stream is selected (602), to be the next video frame of the reverse video stream, then the selection and decoding steps of the method are repeated for said next video stream.

A method for reverse video playback and a computer-readable medium are provided for playing a video stream backward. The video stream includes a plurality of groups of pictures which includes a plurality of frames. The frames include one I-frame and at least one frame which is a non-I-frame. The said method includes decoding from the I-frame to a last one frame in a group of pictures according to the time sequence, outputting the last one frame, saving at least one frame which is not outputted in the group of pictures to a storage module, pre-decoding the frames which is not outputted and saved in the group of picture, outputting the frame which is in the storage module.

The invention relates to a vehicle-mounted reverse video display method. The method comprises the steps that a reverse signal is detected; when the reverse signal is detected, the operation phase of a vehicle-mounted system is determined; when the vehicle-mounted system does not complete boot, a reverse system is loaded through a guide program; a reverse video is displayed through the reverse system; and the reverse system and the vehicle-mounted system share a processor. When vehicle-mounted system does not complete boot, the reverse system dedicated to a reverse task is loaded through the guide program. The loading speed of the reverse system is faster than that of the vehicle-mounted system, so that the reverse video can be quickly displayed. In addition, the invention further provides a vehicle-mounted reverse video display device.