Canon Kabushiki Kaisha

Nobuo Tezuka

Masanori Uchidoi

Nobuaki Date

Syuichiro Saito

Yukio Iura

Hiroshi Aizawa

Nobuo Fukushima

Michio Hirohata

Masayoshi Yamamichi

Susumu Kozuki

Masaya Maeda

Ryoichi Yoshikawa

Makoto Masunaga

Teiji Hashimoto

Satoshi Watanabe

Shinji Sakai

Masami Shimizu

Yukio Ogawa

Tadashi Okino

Akihiko Tojo

Ryosuke Miyamoto

Akio Sunouchi

Yoji Sugiura

Shigeo Ogura

Yoshitaka Murata

Akimasa Nishimura

Mitio Senuma

Ryoichi Suzuki

Hiroshi Yamamoto

Masaharu Kawamura

Takashi Uchiyama

Tetsuya Taguchi

Takao Kinoshita

Yoichi Tosaka

Yasutomo Suzuki

Tsukasa Uehara

Tokihiko Ogura

Yoshihiro Shigeta

Toyotosi Suzuki

Noriaki Sanada

Seiichi Ozaki

Tatsuya Taguchi

Suzumu Kozuki

Takemi Tanno

Noboru Kodaira

Uchidoi Masanori

Yutaka Iwata

An electronic camera including an image pickup element, a solid state memory of relatively small capacity for storing at least one frame of a video signal produced by the image pickup element and a non-solid state memory of relatively large capacity for storing the video signal stored in the solid state memory, wherein these memories each are made releasably attached to the image pickup element.

Electronic camera with detachable buffer memory

An apparatus for recording and/or reproducing information using a flexible magnetic disc housed in a cassette having a recording or reproducing mechanism for recording and/or reproducing the information on and/or from the disc, a rotary driving device for engaging an engaging part formed on the disc and for rotating the disc, a cover movable from a first position where the cover can receive the cassette to a second position where the cassette can engage with the rotary driving device, a pressing device having a pressing part for pressing the engaging part of the disc, wherein as the disc is moved by the cover from the first position to the second position, the pressing part is caused to come into contact with the engaging part and the pressing part is pressed against the engaging part under the action of a pressing force of the pressing device to press the engaging part onto the rotary driving device to mount it thereon, and the pressing of the pressing device is released to separate the pressing part from the engaging part and a control part for enabling operation of the recording or reproducing mechanism after the pressing of the pressing device against the engaging part of the disc has been released.

Recording or reproducing apparatus including a disc cartridge loading

A recording system comprises an image pick-up recording device to record the picture information obtained through the image pick-up on a recording medium by a recording head; and a control device to change the relative location of the head and the medium after the information of one picture has been recorded in a predetermined location on the medium and to prevent the next picture information from being read out during the period of time until the completion of that displacement. The recording system may be provided with a memory for the picture information and a control device for allowing part of the picture information to be recorded in the selected portion on the medium. The control device also permits the other portion of the picture information stored in the memory to be recorded in the other portion on the medium after changing the relative location of the head and the medium.

Recording system which can record signals from two fields for the

In a recording or reproducing apparatus of the kind recording or reproducing information on or from a disc-shaped magnetic sheet which is contained in a cassette, if the magnetic sheet is left over a long period of time in a stationary state in contact with a magnetic head on one side thereof with a stabilizer plate closely opposed thereto on the other side, the magnetic sheet tends to be locally deformed and, if the apparatus is portable, the magnetic head might be damaged by collision with the sheet as the sheet vibrates while the apparatus is carried around. The disclosed apparatus is provided with retracting means for retracting the magnetic sheet and the stabilizer plate away from the magnetic head while leaving the cassette unmoved, so that the possibility of having the magnetic sheet deformed and the magnetic head damaged by the vibration of the sheet while the apparatus is carried around can be eliminated with the magnetic sheet and the stabilizer plate retracted from the head.

Recording or reproducing apparatus

A recording apparatus arranged to shift a recording head in a given direction relative to a record bearing medium and to perform recording in each shifted position. In positioning the recording head, the presence or absence of a record in each recording track on the medium is detected by checking them one after another in a direction reverse to the given direction from a given position. Then, the head is positioned at the first of consecutive blank recording tracks by positioning the head at a point determined by shifting the head to a given extent in the given direction from a position where the presence of a record is first detected among others by the checking operation.

Process for controlling an access position of a recording head which

A recording or reproducing apparatus having a rotating mechanism with a coupling portion for engagement with a record bearing medium, a receiving device with an opening through which the record bearing medium is inserted; a cover movable from a first position where the opening of the receiving device is cleared to a second position where the opening is closed, and further beyond it to a third position; a pressing part for pressing the record bearing medium at a portion thereof so as to rest on the coupling portion of the rotating mechanism when the cover is moved from the second to the third position; and an arresting device for arresting the cover at the second position as it returns from the third position.

A recording or reproducing apparatus is provided with a device for detecting and memorizing the replacement of a recording medium made even after a power supply is cut off. This prevents any error from occurring in a preset sequence of automatic operation processes to be carried out after the power supply is switched on, such as an automatic blank recording-track detecting operation.

Recording and/or reproducing apparatus having a mechanical memory for

A magnetic disc recording apparatus comprises a search mechanism for searching for an unrecorded position on the disc to properly continue the recording to the same disc and a head control mechanism for setting a recording head at the searched unrecorded position on the disc. The search mechanism operates when it is detected that the disc has been replaced or exchanged. The head control mechanism sets the head at a predetermined preparatory position for searching, corresponding to an extremity of a predetermined searching range of the search mechanism for searching for the unrecorded position when there is an indication that the disc has been unloaded.

Recording apparatus including a pre-recording positioning function

A recording system comprises an image pick-up recording device to record the picture information obtained through the image pick-up on a recording medium by a recording head; and a control device to change the relative location of the head and the medium after the information of one picture has been recorded in a predetermined location on the medium and to prevent the next picture information from being read out during the period of time until the completion of that displacement. The recording sytem may be provided with a memory for the picture information and a control device for allowing part of the picture information to be recorded in the selected portion on the medium. The control device also permits the other portion of the picture information stored in the memory to be recorded in the other portion on the medium after changing the relative location of the head and the medium.

A shutter device for a still video camera comprises first and second shutter blades, a latch member and an unlatch member. The latch member latches the first blade at its moved position where an image pickup element is exposed to an image light. The first blade is kept latched for a preparatory exposure to correct a set exposure value on the basis of the output of the pickup element or for picking up a motion picture. The unlatch member releases the latching of the first blade. In one embodiment, the unlatch member is provided on the second blade to unlatch the first blade when the second blade is moved to terminate the exposure. In other embodiments, the unlatch member includes an electromagnet to unlatch the first blade. A still video camera comprises a view finder mirror and a mirror operating mechanism. The mechanism includes a motor and is arranged to retract and return the mirror relative to an optical path by utilizing a normal and a reverse rotation of the motor, respectively. In the disclosed embodiments, the camera further comprises a mechanism to maintain the mirror in the retracted condition and a shutter in the opened condition to operate in a motion video mode where an image pickup element is continuously exposed to an image light. The mechanism for setting in the motion video mode may be operable manually from the exterior of the camera or by connecting an external device to the camera.

Camera shutter and viewfinder control apparatus

An exposure control device having exposure control means arranged to vary a charging method thereof according to the selection of a continuous shooting mode or a non-continuous shooting mode. With the exposure control means including at least a shutter, the shutter is arranged to be moved to a less degree in the continuous shooting mode than in the non-continuous shooting mode. After completion of continuous shooting, the shutter moving degree is changed to a degree to which the shutter is to be moved in the non-continuous shooting mode.

Exposure control device

An image pick-up apparatus arranged to convert an optical image of an object to be photographed into an electrical image signal and to record the image signal on a recording medium is provided with display means which, in reproducing the image signal recorded on the medium, displays within an optical view finder that the apparatus is in a reproducing mode.

Image pick-up apparatus

An image recording apparatus which is arranged to convert an optical image into an electrical image signal by an image pick-up and to record the image signal via a recording head on a flexible record bearing medium is provided with a head shifting mechanism which, after the apparatus is triggered, shifts the recording head from a retired position thereof to a recording (or confronting) position relative to the medium in response to the operation of the apparatus performed prior to commencement of an exposure operation by an exposure device performed on the image pick-up.

Image recording apparatus

An electronic imaging apparatus in which an exposure is controlled by using that output of an image pickup element which is obtained with exposure adjusting means in a corresponding position to the output of a photosensitive element solely used for light measurement, being characterized by including a control circuit for changing the reading-out speed over between a prescribed portion of the image sensing area to be used for the exposure control and the other portion than that prescribed portion, wherein the size and location of the aforesaid prescribed portion is made changeable by an adjusting member accessible from the outside of the apparatus.

Electronic imaging apparatus with signal integration and selective image

An image sensing device includes an image sensor; a photometric element which is arranged separate from the image sensor to measure light with a diaphragm aperture fully opened; a storing time control circuit arranged to variably control the storing time of the image sensor; a circuit arranged to form exposure control information from the output of the image sensor on the basis of the output of the photometric element at least under a condition in which the storing time is controlled by the storing time control circuit; and an exposure control circuit arranged to control the exposed condition of the image sensor on the basis of the exposure control information.

Image sensing device having a photometric element for setting an

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Kanagawa, Japan

Nobuo Tezuka