Abstract: Disclosed is a steering angle detecting apparatus, which detects a rotation angle of a steering wheel, and the apparatus includes a main gear configured to rotate in association with a steering shaft connected to the steering wheel, and a plurality of sub gears respectively having a magnet and configured to rotate in engagement with the main gear, wherein a triangle obtained by connecting centers of the main gear and the plurality of sub gears has an area of 334 mm2 or above and 528 mm2 or below.

Abstract: The present invention relates to a picture adjusting method of a color television and its circuit for obtaining enhanced picture resolution by automatically adjusting the contrast, a brightness and sharpness of a picture in accordance with the ambient brightness, picture brightness, magnitude of RF signals and viewing distances of a remote controller from a television screen, utilizing either a set of fuzzy logic rules with fuzzy logic reasoning, or a look-up table having data corresponding to the detected ambient brightness, picture brightness, magnitude of the RF signals and the viewing distances of the remote controller from the television screen.

Abstract: The present invention is to provide an apparatus for turning on/off a TV and switching the input source thereof by means of a Video Cassette Recorder (VCR) without separately turning on/off the TV and VCR when playing the VCR. The TV control signal generated by a first microcomputer of the VCR is combined with the audio signal of the VCR by an adder, from which a combined signal is transmitted through an audio line to the external input terminal. In the TV, the combined signal is low-pass-filtered to detect the audio signal, while being high-pass-filtered to detect the TV control signal applied to a microcomputer of the TV to turn on the TV or switch the input source thereof.