Video processing device

摘要

Provided is a video processing device with which it is possible to efficaciously carry out a process of superpositioning a monitor character signal in a video signal which is inputted from a camera and outputting same separately from the video signal. The video processing device comprises: a character signal emitter which generates a character signal on the basis of the monitor data; and a character superposition unit which superpositions the character signal which is generated by the character signal emitter upon the least significant bits of the color difference signal of the video signal which is inputted from the camera. With respect to downconverting the video signal whereupon the character signal has been superpositioned, only a downsampling process on the least significant bits of the color difference signal is carried out, and an interpolation filter process is not carried out.

主权项

1. A video processing device for interposing a character signal that indicates a state of a camera or a state of a camera control device for controlling an operation of the camera on a video signal inputted from the camera and for outputting a resulting signal separately from the video signal, comprising:
a character signal generator that generates a character signal on the basis of the state of the camera or the state of the camera control device; a character signal superposing unit that superposes the character signal generated by the character signal generator on a least significant bit of a color difference signal of the video signal inputted from the camera; a down convertor unit that reduces the number of pixels of the video signal on which the character signal has been superposed by carrying out a thinning process and an interpolation filtering process on the brightness signal and the color difference signal excluding the least significant bit, where the thinning process is carried out while the interpolation filtering process is not carried out on the least significant bit of the color difference signal in the video signal; and a number of down convertor units that reduce the number of pixels of the video signal to different numbers of pixels, provided downstream from the character signal superposing unit.