 Password security method |
| To prevent this, an object of the present invention is to provide a password security system for a ... |
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| Reduced-memory reverberation simulator in a sound synthesizer |
| In accordance with the present invention, a sound or music synthesizer includes a reverberation ... |
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| Combined deemphasis circuit and noise blanker |
| It is therefore an object of the invention to provide a noise reduction circuit to an FM radio for ... |
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| Audio signal transmission system |
| It is therefore an object of the present invention to provide an audio signal transmission system ... |
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| Active speaker system and components therefor |
| Each speaker enclosure contains at least a pair of amplifiers and an electronic crossover network ... |
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| Snap-in attachment for ear defender cup |
| According to the present invention a detachable snap-in attachment is defined in which the sliding ... |
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| Time variant analog signal switching apparatus including switching transient avoidance |
| An objective of the subject invention is to avoid the generation of spurious voltage transients ... |
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| Signal processing system and method for digitally mixing a plurality of analog input signals |
| In one illustrative embodiment of the invention, a signal processing system is provided, receiving ... |
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| Single-chip audio system power reduction circuitry and methods |
| A single chip audio system includes a bus interface, digital to analog converters, analog mixer, ... |
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| Mixing, coding and decoding devices and methods |
| It is therefore a primary object of the present invention to provide a mixing device and a mixing ... |
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System for controlling the exposure in a camera
| Details |
Inventors: Schickedanz, Willi;
Assignee: Canon, Inc. (Tokyo, JP)
Primary Examiner: Gonzales; John
Assistant Examiner: Perkey; William B.
Attorney, Agent or Firm: Gross; Karl H.
A pick-up system includes means for recognizing the displacement of objects to be photographed relative to the optical reproduction plane. The shutter of the pick-up system is actuated according to the relative motion of said objects. In a pick-up system comprising a variable diaphragm and a replaceable film of a special sensitivity, e.g. in an automatic camera, the shutter speed, being a function of the relative motion of the objects, determines the aperture of the diaphragm with respect to the sensitivity of the film. |
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DETAILED DESCRIPTION Accordingly, it is a general object of the present invention to overcome the disadvantages of the prior art.
More particularly, it is an object of the present invention to provide an improved fully-automatic system which does not have the disadvantages of the fully-automatic systems known from the prior art.
Another object of the invention is to make the operation of an automatic camera more flexible by providing two primary values (i.
e.
brightness and motion) for controlling the shutter and the diaphragm, instead of only one value (i.
e.
brightness).
A further object of the present invention is to incorporate the shutter and diaphragm control system in a camera comprising an automatic range determining and distance adjusting device, thereby making use of the same photoelectric elements.
Another object of the invention is to provide an automatic shutter and diaphragm control which is not limited to conventional cameras, but is also applicable to cameras with electrostatic reproduction systems or to cameras making instant photographs or to cameras comprising residual light amplifiers.
A concomitant object of the invention is to provide a shutter control for cameras using photo-sensitive means, the sensitivity of which is not dependent on the duration of the illumination.
A further object of the present invention is to operate the control system with electronic means, and more particularly with a programmable micro-processor.
An additional object of the invention is to provide a system which is compatible with all types of conventional semi-automatic or fully-automatic exposure control devices.
Yet a further object of the invention is to add the new system to well-known other systems in such a manner that it is possible to connect it to or disconnect it from such known systems.
In keeping with these objects, and with still others which will become apparent hereinafter, one feature of the invention resides in a system comprising means for checking the image field to be photographed for objects moving in the image field, means for metering the amount of movement of such objects in the image field, means for selecting the shutter speed as a function of the metered amount of movement, and means for operating the camera shutter in accordance with the selected shutter speed
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Audio Signal Processing 
