Abstract: A motion detection apparatus capable of editing a monitoring range and of adjusting the motion indication and the indication level, which includes an analog/digital converter, a synchronous separator, a system clock generator, a microcomputer, a memory control and address generator, a picture memory and motion comparator, a level comparing and motion output controller, an alarm output controller, a window control and marker indication controller, and a picture synthesizer.

Abstract: Monitoring apparatus and method for a CCTV monitoring camera, whereby an operation of a zoom lens and upward, downward, left and right rotating operations of the monitoring camera can readily be monitored while the monitoring camera performs a monitoring function.

Abstract: A system for automatically detecting a variation of video information, comprising a video information variation detecting circuit for converting a video signal outputted from a monitoring camera into digital data, storing the digital data, or video data by one frame and comparing the current inputted video data with the stored video data to detect a portion different from each other as the variation of video information, a microcomputer for controlling the system operation, and a video output control circuit for setting a window area on the screen and, if the video information variation detecting circuit detects the variation of video information in the set window area, outputting an alarm control signal and generating a variation indicating marker signal corresponding to the variation detected portion in the set window area, such that the marker signal is overlap-displayed on the current picture on the screen corresponding to the variation detected portion in the window area.

Abstract: A camera video signal processing circuit for processing camera video signal whereby displaying on a monitor or a television receiver in the monitoring system and the like, and particularly, to a picture holding circuit for a still picture in a television receiver in which when video signal is not inputted from video camera, final picture is held whereby enabling to display as a still picture. The circuit comprises a luminance/color difference and synchronous signal separator an analog switching unit, an analog/digital converter, an encoder, a controller, digital/analog converters, a synchronous signal generator, an encoder, a synchronous voltage detecting unit, an integrator, a flip-flop and gates.

Abstract: A system for divisionally displaying plural images on a monitor screen and capable of displaying video signals inputted from four monitoring cameras on one screen by dividing in four parts and of recording one signal out of the signals being displayed on one screen divided in four or video signals being directly inputted from video cameras. The system includes first to four video signal processing sections for processing four camera video signals, synchronous generator for producing synchronous signal and color burst signal, an ON-screen generator, digital/analog converters for converting the output signals of the video signal processing sections and the ON-screen generator, and an encoder for synthesizing the output signals of the digital/analog converters with the synchronous signals and color burst signal of the synchronous generator.

Abstract: A still/moving picture selection control circuit for selecting a still picture or a moving picture in a video phone system by the operation of a switch. The circuit including a still selection unit for outputting pulse signals, a single-frame signal generating unit for generating single-frame signal, a movie signal generating unit for generating or stopping movie control signals, a still/movie control unit for applying a subcarrier frequency signal to an A/D converter when single-frame signal is output from the single-frame signal generating unit or when movie control signal is output from the movie signal generating unit, a memory section for storing the output signals of the A/D converter to a RAM when the single-frame signal is output and for applying the signals stored in the RAM to a D/A converter when the single-frame signal is not output.

Abstract: An apparatus for delaying a sub-aural (i.e., subchannel) signal in a television receiver of a sound multiplex system is provided, which is capable of outputting the sub-aural signal later than the main aural signal by a predetermined time interval. The apparatus is provided with a delaying circuit including an input clock generator, an output clock generator, an A/D converter for converting the output signal of a band-pass filter into a digital signal by setting down the input clock signal from the input clock signal generator at a sampling frequency, a memory for storing the output of the A/D converter, a D/A converter for converting the output signal of the memory into an analog signal by setting down the output clock signal from the output clock signal generator at a sampling frequency, and an output holding section for holding the output signal of the D/A converter by synchronizing the output signal of the D/A converter with the output signal from the output clock generator.