Ricoh Company, Ltd.

Satoshi Yamane

Toshitatsu Suzuki

Yoshio Fukushima

Susumu Iguchi

Kunihiko Araki

Hirofumi Horigome

Yoshimi Ono

Tamio Murano

Koichi Nishi

Tadafumi Ohguro

A Bi-CMOS ( Bipolar-Complementary Metal Oxide Silicon ) gate array includes bipolar transistors, and P-channel and N-channel MOS transistors all formed on the same single chip in the form of an array. Such a chip may provide desired bipolar and MOS transistor characteristics at the same time by itself.

Processes for manufacturing a semiconductor device

A distance measuring apparatus for automatically measuring a distance from a reference point to a subject of interest, such as a subject to be photographed, is provided. The present apparatus includes a position sensitive detector having a photoelectric surface defined between two extreme points. Thus, when a light pulse emitted from the apparatus is reflected by the subject and impinges upon the photoelectric surrface, there is produced a pair of current signals, which are then processed to obtain a distance signal indicating the distance to be measured. Thus, the present apparatus can provide a highly accurate measurement.

Distance measuring apparatus

A distance measuring apparatus for automatically measuring the distance from a reference point to a subject of interest, such as a subject to be photographed, is provided. The present apparatus includes a position sensitive detector, a differential circuit and a pair of detecting/extracting circuits each connected between the detector and the differential circuit, whereby each of the detecting/extracting circuits includes electronic switches which change the mode of operation of the apparatus.

A film advancing system of a camera in which a roll of film inside a film cartridge is first wound to a spool and then the film is rewound into the cartridge one frame from another after each photographic operation is provided. The system includes a reversibly rotatable motor the drivement and rotational direction of which are automatically controlled depending upon various conditions of the camera to implement required advancement of the film.

Film feeding system of a camera

A camera system in which information is transmitted between a camera body and an accessory in the form of a current signal is provided. A voltage-to-current converter is provided in at least either one of the camera body and accessory and a current-to-voltage converter is provided in at least the other of the camera body and accessory. Thus, analog information can be transmitted between the camera body and the accessory with high accuracy even if they have separate voltage sources different in level.

Growing community of inventors

Kobe, Japan

Satoshi Yamane