Television generator for highlighting portions of an image

DETAILED DESCRIPTION As described above, according to the prior art, hardware is increased in volume and high-speed operation cannot be performed.
It is an object of the present invention to provide a highlight generator which has a simple configuration and can perform high-speed operation.
A television signal generator according to the present invention has a contour map generator consisting of n-series connected circuits each for generating, in accordance with input video data, two types of video data respectively representing a predetermined region on a screen represented by the input video data and a region obtained by enlarging or reducing a region of a predetermined width around the predetermined region, and arithmetically adding the video data so as to obtain video data having step region data with respect to brightness.
The n-step region map data output from the region map generator is stored in an image memory.
A readout output from the image memory is fed back to an input of a data region map generator, and n.
times.
N step region map data are stored in the image memory by N feedback operations.
The television signal generator of the present invention further has a data converter for obtaining video data to provide a video effect in which a portion surrounding a region on the screen represented by original video data is enlarged or reduced as time elapses in accordance with the region map data and time data.
With this arrangement, high-speed operation can be performed with a small volume of hardware so as to perform required video processing within a short period of time.
The above and other objects, features and advantages of this invention, will be apparent from the following detailed description of illustrative embodiments which are to be read in connection with the accompanying drawings.