Canon Kabushiki Kaisha

Matsushita Electric Industrial Co., Ltd.

Kanon Kabushiki Kaisha

Fumio Ito

Tadashi Ito

Nobuhiko Shinoda

Nobuaki Sakurada

Hiroyashu Murakami

Yukio Mashimo

Masaharu Kawamura

Soichi Nakamoto

Yasuo Isobe

Mutsuhide Matsuda

Mutsunobu Yazaki

Tokuichi Tsunekawa

Tetsuya Taguchi

Isao Harigaya

Ryoichi Suzuki

Takashi Uchiyama

Akio Sunouchi

Yoshiaki Watanabe

Shuichi Tamura

Nobuaki Date

Hiroshi Furukawa

Michio Hirohata

Masayuki A Suzuki

Masayoshi Yamamichi

Masanori Uchidoi

Masami Shimizu

Hiroaki Kosugi

Youichi Okuno

Fujio Sasaki

Kanehiro Sorimachi

Seiichi Yamaguchi

Wataru Nagasaka

Masaharu Kamamura

Mashaharu Kawamura

Nobuaki Sakurado

A multiband mobile unit communication apparatus is disclosed which comprises: an antenna for receiving 1st and 2nd bands of radio wave SIGs including quadrature modulation SIGs; a 1st LO CKT for generating a 1st LO SIG; 1st and 2nd receiving CKTs for generating 1st and 2nd IF SIGs from the 1st and 2nd bands of radio wave SIGs using the 1st LO SIG respectively; a switching CKT responsive to a switching control SIG indicative of 1st and 2nd modes for outputting the 1st IF SIG in the 1st mode and outputting the 2nd IF SIG in the 2nd mode; a 2nd LO CKT for generating 2nd and 3rd LO SIGs in the 1st and 2nd modes respectively; and a quadrature demodulation CKT for demodulating and outputting quadrature SIGs from an output from the switching CKT using the 2nd and third LO SIGs in the 1st and 2nd modes respectively. The 2nd LO CKT comprises: a local oscillator for generating a 4th LO SIG, a FRQ divider for dividing the 4th LO SIG with a given divisor and generating the 2nd LO SIG; and a switch for outputting the 2nd LO SIG in the 1st mode and outputting the 4th LO SIG as the 3rd LO SIG in the 2nd mode in response to the switching control SIG. The given divisor corresponds to a ratio between center FRQs of the 1st and 2nd IF SIGs. The 2nd LO CKT may change the LO FRQ by switchably connecting resonating elements to an oscillator.

Multiband mobile unit communication apparatus

Most of the elements constituting this camera system consists of digital circuits, whereby a central processing unit is built in this camera system in such a manner that various kinds of photographic modes are possible without increasing the number of the elements.

Camera system

An exposure control system for a photographic camera of the type provided with a shutter preselection automatic exposure range and a diaphragm preselection automatic exposure range, wherein various exposure control parameters are digitized and applied to a digital computer for providing either shutter interval or diaphragm aperture control signals. For exposure control in the shutter preselection automatic exposure range, there are provided a signal generator associated with the camera diaphragm mechanism, an analog-to-digital converter cooperative therewith for providing digital signals corresponding to ever varying aperture sizes as the diaphragm mechanism is operated from its fully open position, and a comparator connected between said computer and converter upon detection of coincidence of the signal from the computer with one of the signals from the converter to provide a diaphragm mechanism arresting signal. Further, the invention provides various types of non-contact device usuable as the diaphragm information generator.

Exposure control system for a camera having a digital computer

In the camera disclosed, a control circuit responds to a focus detecting circuit to energize first display portions to produce a first mark representing the detected distance, and responds to a setting arrangement to energize other display portions to produce a second different mark representing a set distance. According to an embodiment, the control circuit displays a third mark when the first and second marks coincide.

Photographic operation control circuit for camera

In the disclosed camera exposure control, data recording and film winding are performed sequentially and the system is protected from battery voltage drop arising from the effective increase in consumption of electrical energy necessary to make each exposure as compared with the ordinary camera, by detecting the battery level upon occurrence of a prescribed phase of the operating cycle. In one embodiment, the battery is also checked at a subsequent step of the cycle (for example, film winding operation is permitted only when the battery level is above the predetermined level). According to an embodiment of the invention, a sequence control circuit controls the photographic operation sequentially.

The present invention relates to a control device for camera, so designed as to sequentially control the photographing period, the release time and the release frequency in an automatic way and to print the data information on the film. The eventual abrupt change of photographic conditions is detected so as to carry out the releasing independently of the sequential control, stopping the sequential control and automatically controlling the starting time or the determination time of the sequential control.

Control device for a camera

A camera having an exposure control device in which various photographing informations are converted into digital amounts and supplied to a digital operation circuit and the exposure is controlled by the output of the operation circuit. The camera comprises a digital-analogue converter for converting diaphragm informations from the operation circuit into analogue diaphragm informations, a comparison means for comparing the analogue diaphragm informations from a photographing lens with the analogue informations from the above digital-analogue converter, and an alternating switch which supplies the informations from the photographing lens to the comparison means for shutter preference photographing, and supplies the analogue informations from the photographing lens to the analogue-digital converter for diaphragm preference photographing. The output of the analogue-digital converter is supplied to the operation circuit, and the shutter preference and diaphragm preference photographings is made possible by the changeover of the alternating switch.

Exposure control device for a camera having a digital operation device

In the disclosed photographic exposure control system, an exposure mechanism generates at least one controllable exposure parameter for regulating the exposure of a photosensitive material. A coding circuit is set to produce digital signals corresponding to at least one photographic value. A control device between the coding circuit and the exposure mechanism calculates the exposure parameter and controls the coding circuit. The coded values are then suitably displayed to the photographer.

A photographing information setting device of such system that a pulse generation means is provided and photographing information is set by pulses generated by opening and closing of a switch, being characterized by that a switch to place a photographing information setting circuit thereof in an activated state and a switch for photographing information setting are simultaneously handled by a single handling member.

Photographing information setting device in a camera

A printed circuit unit for a camera, comprising

Printed circuit unit for a camera

The present invention refers to a system for digitally indicating the digital input information, and particularly for avoiding the flickering of the indication state of the indication means in case the input information varies. The system includes a control means for conveying the digital input information to the indication means periodically to update the content of the indication means at the end of a determined period. When input information varies excessively, it is detected and immediately conveyed to the indication means independently of the update at the end of the determined period. Accordingly, the system is quite efficient as an indication system for a continuously varying input information.

Digital information indicating system

A photographic apparatus of the foldable type in which, when in preparation for photography, a front housing carrying a photographic objective lens system together with a focusing mechanism therefor is moved away from a rear housing to form an exposure chamber for a sensitive material loaded in the rear housing. When the apparatus is rearranged to a folded position, the front housing is brought into compact relation with the rear housing. Since a distance-measurng device is located in the rear housing, there is provided an electrical channel for establishing electrically operative connection between the focusing mechanism and the distance measuring device as arranged along a path between the front and rear housing which remains substantially unchanged in length during the erecting and collapsing operation of the apparatus.

Photographic apparatus

The present invention is directed to an operation detecting device of a camera for detecting the operation of an operation member such as the shutter member. The operation detecting device functions by detecting the electrical signal produced at the time at which a closed magnetic circuit is opened when a magnet operates so as to actuate or release the operation member.

Operation detecting device for camera

An exposure control device is disclosed which has an extremely high accuracy as compared with the prior art, the error range being within a one-eighth step. For such a highly accurate control of exposure time, a value of exposure time to be determined is converted to a binary code of n bits, of which the lowest one bit is weighed one-eighth step. Based on the decimal number corresponding to the upper m bits of the binary code, the frequency of the control signal is adjusted and is used in reading out the lower (n-m) bits of the same binary code, whereby the period of actuation of the shutter is determined.

Growing community of inventors

Yokohama, Japan

Fumio Ito