Abstract: A non-gloss producing compact document reader is provided which solves a problem that when a photo, code information or the like is optically read, illuminating light for taking an image of such information is regularly reflected on a sheet surface, returned to the imaging unit and becomes “gloss” which may prevent the information from being read. A document reader (1) includes an optical mark irradiation unit (21) that radiates an optical mark onto an imaging surface of an imaging target, an imaging unit (22) that takes an image of the imaging surface and an illumination unit (23) that illuminates the imaging surface with illuminating light. When an angle formed between the imaging surface and the imaging unit (22) is an angle at which light (illuminating light regularly reflected on the imaging surface) does not return to the imaging unit, the optical mark has a predetermined shape.

Abstract: A display panel includes a plurality of alphanumeric segment display elements. A display control circuit controls a plurality of the alphanumeric segment display elements in accordance with either of frequency data or equalizing characteristic data supplied from an audio apparatus mounded on the vehicle. The display control circuit operates a plurality of the alphanumeric segment display elements either to display digits of the frequency data in response to the frequency data or to display a spectrum characteristic waveform over a plurality of the alphanumeric segment display elements in response to the equalizing characteristic data, so that equalizer characteristic is selectively displayed on the alphanumeric segment display elements originally provided for displaying the receiving frequency.