Lapis Technology Co., Ltd.

Tadashi Takenoshita

Tomoyuki Ichikawa

Takuya Motohashi

Masataka Oguchi

A data transfer device includes: a video transmission circuit, transmitting video data from a first deviceto a second deviceduring a video period as a timing of transmitting the video data; a transmission part, transmitting non-video data between the first deviceand the second deviceduring a video blanking period as a timing of transmitting the non-video data; and a monitoring part, during the video blanking period, controlling the transmission partto stop transmission of the non-video data from the second deviceto the first devicein response to presence of a signal from the first deviceand stop transmission of the non-video data from the first deviceto the second devicein response to presence of a signal from the second device

Data transmission device and data transmission method

A video signal processing device includes a selection/output unit that receives a video signal, sequentially selects and outputs a sequence of image data pieces of split image regions, a CRC calculation circuit that executes CRC calculation on a sequence of pixel data pieces outputted from the selection/output unit, a calculation result sorting unit that generates test values corresponding to the split image regions based on a CRC calculation result, a freeze determination unit that, based on the test values corresponding to one frame and the test values corresponding to another frame, determines whether a change has occurred in the video of the split image regions between the frames, and a video freeze detection unit that, by determining whether or not a state where no change has occurred in the video is continuing over a prescribed number of frame periods, detects whether or not the video is frozen.

Growing community of inventors

Yokohama, Japan

Tadashi Takenoshita