Abstract: It is an object to enable an optimum video display to be obtained by automatically adjusting a display size and a display position of a video image even when any kind of video signal is supplied. A comparator detects a video display period of a video signal a and generates a detection signal b. A counter, latch circuits, comparing circuits, and the like form information of the start position or end position of the video display period of the video signal a and period information of the video signal a. An arithmetic operation control circuit generates control information of the display size, display position, and the like from those information by arithmetic operations by using a detection signal b and a horizontal sync signal h. A memory holds the control information. The control information is read out when a power source of the display is turned on at the next time.

Abstract: It is an object to enable an optimum video display to be obtained by automatically adjusting a display size and a display position of a video image no matter what kind of video signal is supplied. A comparator detects a video display period of a video signal a and generates a detection signal b. A counter, latch circuits, comparing circuits, and the like form information of the start position or end position of the video display period of the video signal a and period information of the video signal a. An arithmetic operation control circuit generates control information of the display size, display position, and the like from those information by arithmetic operations by using a detection signal b and a horizontal sync signal h. A memory holds the control information. The control information is read out when a power source of the display is turned on at the next time.

Abstract: Disclosed is a photosensitive material which comprises a support and at least an undercoating layer and a silver halide emulsion layer, said undercoating layer containing a matting agent having an average particle size larger than the thickness of the undercoating layer. Use of this photosensitive material for diffusion transfer process causes neither slipping between the photosensitive material and the image receptive layer nor pinholes in silver images.