Olympus Optical Company, Ltd.

Kowji Tanikawa

Masahide Kanno

Hiroki Hibino

Syuichi Takayama

Takao Rokutan

Kenji Noda

Koichi Matsui

Naomi Sekino

Yutaka Yanagawa

Yoshio Shishido

Akira Matsueda

Kunio Kinoshita

Naoki Uchiyama

Hisayuki Harada

Tadashi Kato

Minoru Shinozuka

Tetsuya Kimura

Takeo Usui

Ryouji Masubuchi

Takeshi Takamatsu, Deceased

By Tokuyuki Takamatsu, Legal Representative

Hiroyuki Yashima

Shiro Bitoh

Kohichi Matsui

Kenichirou Sanagi

Isao Hirosawa

An intraperitoneal therapy apparatus for cauterizing tissues in a peritoneal cavity, which comprises a pneumoperitoneal device for introducing gas into the peritoneal cavity, thereby to inflate the cavity, a cautery device for cauterizing diseased tissues in the peritoneal cavity inflated by the pneumoperitoneal device, a suction device for removing fume from the peritoneal cavity, and a control circuit for controlling the pneumoperitoneal device and the suction device in accordance with an operation of the cautery device.

Intraperitoneal therapy apparatus

A marking apparatus has a marking designation switch which is depressed when an image of interest appears on a monitor while a plurality of image data from a photographic unit are displayed on the monitor. In response to a marking designation signal generated upon depression of the marking switch, a mark signal is added to the image data corresponding to the marking designation signal and is stored in a frame memory.

Electronic marking apparatus for identifying a selected image from a

A stone disintegrator apparatus has a probe with discharge electrodes and a power supply circuit for supplying a discharge voltage to the probe for causing discharge between the discharge electrodes. An electrode life detection circuit detects the number of use or discharge operations of the probe so as to determine the remaining life of the discharge electrodes. A discharge inhibit circuit inhibits re-use or discharge of the probe when the life detection circuit detects an end of electrode life.

Stone disintegrator apparatus

A memory data coincidence device includes a volatile read write memory connected to a main power source and auxiliary backup power source, and a keyboard for supplying data to the read write memory. The device further includes a read only memory for storing all data capable of being stored in the read write memory and a central processor unit (CPU) which compares the data of the read write memory with all data of the read only memory before it reads data out of the read write memory. If no coincidence takes place, the CPU sends forth a signal denoting the condition that the read write memory is not backed up.

Apparatus for power-on data integrity check of inputted characters

A film cassette provided with a RAM semiconductor memory for storing data relative to a film contained in the film cassette. The data stored in the RAM is updated at every photographing shot, and the updated data is displayed on a display device.

Film cassette and a photographing device using the same

A display device which comprises a keyboard for specifying a character to be displayed, a decoder for converting a specified character signal into segment signals corresponding to light emitting segments, and a display section which is provided with a plurality of segment display elements, and which are so arranged as to emit light in accordance with the contents of the segment signals. In this display device, a ROM converts a signal representing a character specified by the keyboard into at least two character component signals corresponding to at least two character components of the specified character and the converted character component signals are supplied to the decoder.

Control circuit for a segmented display device

An endoscopic photographing apparatus comprises an endoscope, an endoscopic camera and a light supply unit. A CPU is incorporated into at least one of the endoscopic camera and light supply unit to discriminate the kind of the other. The CPU achieves its kind discrimination depending upon whether a response is present or not after a certain time period since the generation of a flag signal. Further, the CPU achieves its kind discrimination depending upon whether it receives the flag signal or not within a certain time period since the start of its operation.

Endoscopic photographing apparatus

This invention provides a leap year compensation circuit. Date data from an electronic watch circuit is compared with leap year data from a memory circuit. If this date data represents a leap year, the next day after the end of February is corrected to a date in a leap year calender. Leap year compensated date data is set in the watch circuit.

Leap year compensation circuit

A film cassette provided with a magnetic disc for recording data relative to a film. The magnetic disc of the film cassette makes two revolutions when one frame of the film is wound up. Data stored in the magnetic disc are read out during the first revolution of the disc, and renewed data are recorded on the disc during the second revolution.

When a camera is loaded with a film cassette, information corresponding to the diameter of a film wind shaft with film wound thereon is detected by a film cassette type switch. An address of a ROM is designated by the shaft diameter information, and shaft rotation angle information corresponding to the designated address is read out from the ROM. The film wind shaft is rotated through an angle corresponding to the rotation angle information by the driving force of a pulse motor. When a fixed length of a film is wound on the film wind shaft, the shaft diameter information is updated, a new piece of rotation angle information is read out from the ROM in accordance with the updated shaft diameter information, and the film wind shaft is rotated to be wound with the constant length of the film in accordance with the updated rotation angle information.

Film feeding device

An endoscope photographing system has a plurality of release switches respectively disposed at an endoscope, an endoscope camera, and a light source unit; and a release signal generating circuit for generating a signal in response to the operation of these release switches. When a photographing operation is being performed in response to a release signal generated in response to the operation of one of these release switches, the other release signals are disabled.

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Tokyo, Japan

Kowji Tanikawa