Abstract: An image search apparatus, which searches for an arbitrary image on an HDD whereon images, obtained by monitor cameras, are recorded in a time sequence for each screen, has a CPU which sequentially reads images from the HDD for individual screens, comparing means compares an image read by the CPU with a subsequently read image, designates the subsequently read image as an arbitrary image when the two images do not match, and transmits the arbitrary image to the CPU as the search results. Therefore, the image search apparatus can easily search for an arbitrary image among images that have been photographed by cameras and have been recorded in a time sequence.

Abstract: The identification information input apparatus comprises a rotary encoder group for giving the user a click feel per unit rotation and generating an electric signal, and inputting arbitrary alphanumeric characters forming alphanumeric characters assigned in proportion to rotation angle via rotating operation, a pushbutton switch group for confirming alphanumeric characters input via the dial unit, password conversion unit for converting the electric signal generated by the dial unit to the alphanumeric characters based on a conversion table, and password authentication unit for authenticating the converted alphanumeric characters by checking whether the alphanumeric characters converted by the conversion unit are alphanumeric characters constituting the password.

Abstract: A video signal processing circuit for processing a video signal including a noise is disclosed which comprises: an edge enhancement signal generation circuit for generating an edge enhancement signal from the video signal; a noise reduction circuit for reducing a level of the noise to generate a noise reduced video signal; and an adder for adding the edge enhancement signal to the noise reduction video signal to output a processed video signal. The apparatus may further comprise an input terminal for receiving the video signal, wherein the edge enhancement signal generation circuit and the noise reduction circuit coupled to the input terminal are in parallel.