Abstract:
A camera capable of recording information and using a film having a magnetic recording medium, a film and a cartridge which accommodates the film, the camera comprising: a recording device for recording information about photography to the magnetic recording medium; a reproducing device for reproducing the information recorded in the magnetic recording medium; a determination device for subjecting the information recorded by the recording device and the predetermined information reproduced by the reproducing device to a comparison so as to output an alarm signal in a case where the two information items are substantially different from each other; and an alarm device for issuing an alarm to a user in response to the alarm signal transmitted from the determination device, wherein the recording device records the predetermined information in the magnetic recording medium while the reproduction device reproduces the predetermined information recorded in the magnetic recording medium.
Abstract:
An automatic focus adjustment camera in which a photo-taking lens is step-driven to one of a plurality of set positions, depending upon measurement of object distance, employs aperture adjustment or adjustment of object distance to improve resolution of images. The total focusing distance range of the photo-taking lens is divided into successive object distance ranges, and the center of each object distance range corresponds to one of the set positions of the photo-taking lens. The amount of adjustment to improve resolution is determined by the extent to which the measured object distance differs from the center of the object distance range that includes the measured object distance. In a portrait photography mode the aperture diameter is made large enough to ensure blurring of background while obtaining a sharp object image.
Abstract:
A camera capable of operation in continuous photography and one-frame photography modes has an automatically activated flash device the operation of which may be inhibited by the user when desired. In a preferred embodiment, when the camera is in the continuous photography mode and the user has inhibited the flash device, the inhibition of the flash device is maintained upon completion of continuous photography. One-frame photography may be performed while the camera is in the continuous photography mode, and while maintaining inhibition of the flash device, by momentary depression of the shutter release button. If the camera is operated in the one-frame photography mode and the flash device is inhibited, inhibition of the flash device is automatically cancelled after each exposure.
Abstract:
A camera comprises a photographing optical system, an optical filter capable of insertion into and retraction from an optical path of the photographing optical system, a detector for detecting the insertion of the optical fiber into the optical path, a device for adjusting the position of the photographing optical system to focus on an object to be photographed, and a device for correcting adjustment of the photographing optical system according to a change in optical path length caused by insertion of the optical filter. In one embodiment, a range finder produces a range output corresponding to distance to an object, and the amount of movement of the photographing optical system, which depends on the range output, is corrected.
Abstract:
A camera comprises a photographing optical system in which a focal length thereof is changed between a predetermined focal length range including a first focal length and a second focal length longer than the first focal length, a soft focus filter optical member, means for holding the optical member to be switched between an insertion position where the optical member is inserted in an optical path of the photographing optical system and a removal position where the optical member is removed from the optical path, and means for biasing the optical member to the removal position when the photographing optical system is located at the first focal length and the optical member to the insertion position when the photographing optical system is located at the second focal length.
Abstract:
A method and apparatus for controlling an operation of a camera is so structured that when a first process for performing a pre-focusing process and the like and a third process for performing light-metering process, exposure control process and the like after auto-focus control are executed under the program control of a microcomputer, and a second process for performing the auto-focus control is executed between the first and third processes, the operation of the microcomputer is interrupted by cutting off power supply thereto or applying an operation stop signal to a reset terminal thereof after the first process, and the second process is then executed. After second process is completed, the microcomputer is restarted and, after it discriminates the completion of the second process, the third process is executed. In this way, since the first and third processes based on the program control are executed in a time-serial manner, they are no longer adversely influenced by the second process. Furthermore, when the microcomputer is restarted, the third process is executed after it discriminates the completion of the second process. Therefore, even if the program control is interrupted, the computer program control sequence can be executed.
Abstract:
A flash device for photography includes a DC/DC converter for boosting a DC power source voltage and applying a voltage to a main capacitor for supplying an energy for driving a flashlight tube. The converter has control means operative in response to the trigger operation by a start operating switch to detect any reduction in the charging current of the main capacitor and stop said operation. The flash device is provided with another switch means for enabling the operation of the converter independently of the start operating switch. Said another switch means is operative to operate the converter until the charging voltage of the main capacitor reaches a sufficient value to drive the flashlight tube.
Abstract:
An image recording apparatus records image files on a recording medium. The image recording apparatus automatically selects disused files and automatically deletes them at the appropriate timing. A storage device acquires an image file from, e.g., an imaging component or an external terminal and records the image file together with time information on a recording medium. A controller monitors the recording area of the recording medium and automatically deletes image files for which the time information is old in accordance with the monitored usage status of the recording area.
Abstract:
An information magnetic recording apparatus according to the present invention has: a magnetic recording head that magnetically records on a film; a magnetic recording signal conversion device that converts information to a magnetic recording signal; a head driving circuit that drives the magnetic recording head based on the magnetic recording signal that is outputted from the magnetic recording signal conversion device; and a temperature detection circuit that detects a temperature around the head driving circuit and determines whether or not the temperature is abnormal. And the magnetic recording signal conversion device stops outputting the magnetic recording signal if the temperature detection circuit detects that the temperature is abnormal.
Abstract:
An information processing device configured to conserve power consumption of the battery. The device uses a recording medium with a magnetic recording unit. A power source supplies power to at least one assembly, which retrieves and/or records information on the recording medium. The power is supplied to retrieve and/or record information only when the respective assembly is in operation. The device can be a camera using film as the magnetic recording medium.