Abstract: An information transfer system includes an IC card including a communicating section; a passage checking apparatus for checking passage through a gate using the IC card, without being in physical contact with the IC card; and a display device for displaying information of the IC card, wherein the passage checking apparatus includes a communicating section for transmitting passage check information required to check passage through the gate and additional information other than the passage check information to the IC card and for receiving the passage check information from the IC card, the IC card includes a memory for storing the additional information transmitted from the passage checking apparatus, and the display device includes a communication section for obtaining the additional information stored in the memory of the IC card.

Abstract: An optical reader capable of optically reading a plurality of data comprises an object to be read having different coded information placed thereon, with each information having a unique control code, scan means for producing scanning light to be projected to said object, photo-electric conversion means for converting scattered light produced by the scan to an electrical signal, means for determining said control code and information by said electrical signal and means for sorting the information by said control code for storage, whereby different information is optically read while it is sorted by the control code unique to the respective information and stored.

Abstract: An optical reader including a plurality of fixed mirrors disposed on an imaginary circumference, a light source for emitting a light beam, a rotating mirror receiving the light beam from the light source and directing the reflected light beam to the plurality of fixed mirrors successively so as to form a plurality of retarded scanning light beams projecting on an object, and photo-electric converter means for receiving lights reflected by the object and generating an electric signal. The optical reader does not require mechanical synchronization. Cleaner means may be provided to brush off dust from the surfaces of the fixed mirrors.

Abstract: A device for use with a television receiver or the like, in which the time of receiving a telecast and the channel number of the telecast are preset, whereby the telecast of the preset channel can be automatically received at the preset time.