# US 5,710,950 A · Automatic exposure cameras with improved aperture stop signal > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 5,710,950 A - Document ID: US5710950A - Status: Granted - Kind: A - Application number: 08/497,712 - Filed: 1995-06-30 - Granted: 1998-01-20 - Earliest claimed: 1994-09-07 - Assignees: Nikon Corporation - Inventors: Toshiaki Hozumi - Web page: https://patentgrep.com/patent/US5710950A ## CPC - G03B 7/095: for control of aperture - G03B: APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR (optical parts of such apparatus G02B; photosensitive materials or processes for photographic purposes G03C; apparatus for processing exposed photographic materials G03D) ## Abstract An automatic exposure camera having a continuous shooting capability includes a signal generator generating signals in accordance with the operation of an aperture, a measuring unit counting the signals generated by the signal generator for a specified period of time and a storage unit storing the signals generated by the measuring unit. During continuous shooting operations, an initial picture taking operation is controlled in accordance with the signals generated according to the operation of the aperture, and subsequent picture taking operations are controlled in accordance with the signals generated according to the operation of the aperture within a specified period of time during the initial picture taking operation and which are stored in the storage unit. Additionally provided is a method for controlling the aperture operations of an automatic exposure camera having a continuous shooting mode of operation. The method includes, but is not limited to, generating signals in accordance with the operation of an aperture of the camera, counting the signals over a specified period of time and storing the generated signals so that during continuous shooting operations, an initial picture taking operation is controlled by signals generated in accordance with the operation of the aperture, and subsequent picture taking operations are controlled by signals generated according to the operation of the aperture within a specified period of time during the initial picture taking operation and which are stored during the storing step. ## Claims ### Claim 1 An automatic exposure camera having an aperture and a continuous shooting capability, comprising: a drive unit to drive the aperture; a signal pulse generator generating signal pulses in accordance with the motion of the aperture; a measuring unit counting the signal pulses generated by the signal pulse generator for a specified period of time; a storage unit storing the signal pulses counted by the measuring unit; and a controller, which during continuous shooting, controls an initial picture taking operation in accordance with the signal pulses generated according to the operation of the aperture, and controls subsequent picture taking operations in accordance with the signal pulses generated according to the aperture operation within the specified period of time during the initial picture taking operation and which are stored in the storage unit. ### Claim 2 (depends on 1) The automatic exposure camera of claim 1, wherein the storage unit cancels stored signal pulses from the storage unit when continuous shooting is stopped. ### Claim 3 (depends on 1) The automatic exposure camera of claim 1, wherein the controller controls the subsequent picture taking operations based on particular aperture settings corresponding to the initial picture taking operation and determined by the signal pulses stored in the storage unit. ### Claim 4 (depends on 1) The automatic exposure camera of claim 1, wherein the controller controls each subsequent picture taking operation after controlling said initial picture taking operation by the operation of the aperture corresponding to its immediately preceding picture taking operation. ### Claim 5 (depends on 1) The automatic exposure camera of claim 1, further comprising an aperture setting device to set the aperture for a particular picture taking operation independently of a previously set aperture starting position. ### Claim 6 (depends on 1) The automatic exposure camera of claim 1, wherein the signal pulse generator further comprises: a light emitter; and a photointerrupter including a slit-disk, the signal pulses being generated in accordance with the light emitted through the slits of the slit-disk by the light emitter, the signal pulses being counted by the measuring unit. ### Claim 7 (depends on 1) The automatic exposure camera of claim 1, wherein the measuring unit includes an adder circuit for counting the number of signal pulses generated by the signal pulse generator. ### Claim 8 (depends on 1) The automatic exposure camera of claim 1, wherein the storage unit is a random access memory (RAM) unit. ### Claim 9 (depends on 8) The automatic exposure camera of claim 8, wherein the random access memory unit (RAM) stores at least one number corresponding to a particular aperture setting. ### Claim 10 An automatic exposure camera having an aperture and a continuous shooting capability, comprising: a drive unit to drive the aperture; an aperture value unit to determine an aperture setting for the aperture; a signal pulse generator generating signal pulses in accordance with the motion of the aperture; a measuring unit counting the signal pulses generated by the signal pulse generator for a specified period of time; a storage unit storing the signal pulses generated by the signal pulse generator; and a controller, which during continuous shooting, controls an initial aperture operation based on the signal pulses generated by the signal pulse generator and the aperture setting, and controls subsequent aperture operations based on the signal pulses stored by the storage unit. ### Claim 11 A method for controlling aperture operations in an automatic exposure camera having a continuous shooting mode of operation, the method comprising the steps of: generating signal pulses in accordance with the operation of an aperture of the camera; counting the signal pulses generated during the generating step for a specified period of time; storing the generated signal pulses; and during continuous shooting operations of the camera, controlling an initial picture taking operation in accordance with the generation of signal pulses according to the aperture operation, and controlling subsequent picture taking operations in accordance with signal pulses generated according to the aperture operation within the specified period of time during the initial picture taking operation and which have been stored during the storing step. ### Claim 12 An automatic exposure camera having continuous shooting capability to allow for continuous photographic operations, comprising: an aperture having a particular opening size corresponding to a set of parameters related to a first photographic operation; and an aperture drive device to drive the aperture and to realize high-speed continuous shooting by setting the aperture opening size for a second photographic operation without returning the aperture to an initial aperture starting position, and to drive the aperture based on shutter priority during subsequent aperture operations of the continuous shooting. ### Claim 13 (depends on 12) The automatic exposure camera of claim 12, wherein the aperture drive device controls the second picture taking operation based on particular aperture settings corresponding to the first picture taking operation. ### Claim 14 (depends on 12) The automatic exposure camera of claim 12, wherein the aperture drive device controls each photographic operation by the operation of the aperture opening size corresponding to an immediately preceding photographic operation. ### Claim 15 (depends on 12) The automatic exposure camera of claim 12, wherein the aperture drive device controls the setting of the aperture opening size for a particular photographic operation independently of a previously set aperture opening size.