JPS6150935U - - Google Patents

Description

[Brief explanation of the drawing]

FIG. 1 is a block diagram showing an embodiment of the pre-memory lock device according to the present invention, FIG. 2 is a circuit diagram showing an embodiment of the pre-memory lock device according to the present invention, and FIG. 3 is a block diagram showing an embodiment of the pre-memory lock device according to the present invention. FIG. 7 is another circuit diagram showing an embodiment of the memory lock device. [Explanation of symbols of main parts] Pre-memory lock device...A1-1, A1-2, A1-3, A1-4
, A1-5, A1-6, S1.

Amendment September 13, 1986 The scope of claims for utility model registration is amended as follows.

[Scope of Claim for Utility Model Registration] One power source, a photometric circuit that generates a photometric output according to the brightness of the subject, an analog storage element that stores the photometric output , and at least an input value stored in the analog memory that performs exposure. A control circuit, an electromagnetic release device including an electromagnetic member that performs a release operation when energized by the power supply caused by a release operation, and a semiconductor element that electrically connects the photometric circuit and the analog storage element. It includes a switching circuit and a mechanical switch that opens and closes in conjunction with the operation of the diaphragm mechanism or mirror mechanism caused by the release operation, and the operation of the switch controls the switching circuit at least before the start of exposure to store the memory in the analog storage element. a memory lock device that holds the camera and releases it after the exposure is completed; and a memory lock device that operates before the electromagnetic release device is activated due to the release operation and until the end of the exposure and after the memory retention operation of the memory lock device starts. The pre-memory lock device includes a timer circuit for counting a certain period of time, and a pre-memory lock device for controlling the switching circuit to hold the memory in the analog storage element while the timer circuit is counting time.
Camera with memory lock device.

Claims (1)

[Claim for Utility Model Registration] One power source, a photometric circuit that generates a photometric output according to the subject brightness, an analog memory element that stores the photometric output, and at least the memory of the analog memory element that is retained before the start of exposure. An electromagnetic release that includes a memory lock circuit that releases the lock after exposure is completed, a circuit that controls exposure by inputting at least a stored value in analog memory, and an electromagnetic member that performs a release operation when energized from this power supply caused by a release operation. an automatic exposure control camera having an automatic exposure control device, comprising a switching means provided between the photometric circuit and the analog storage element, for cutting off an output signal of the photometric circuit transmitted to the analog storage element; A camera having a pre-memory lock device, further comprising a pre-memory lock device that operates the switching means to hold the memory in the analog storage element in advance by operating the switching means before energizing the electromagnetic member by a release operation.