# US 5,703,638 A · Image pickup apparatus for moving image photographing or for still image photographing > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 5,703,638 A - Document ID: US5703638A - Status: Granted - Kind: A - Application number: 08/351,740 - Filed: 1994-12-08 - Granted: 1997-12-30 - Earliest claimed: 1991-09-25 - Assignees: Canon Kabushiki Kaisha - Inventors: Seiya Ohta; Kitahiro Kaneda; Hirofumi Takei; Taeko Tanaka - Web page: https://patentgrep.com/patent/US5703638A ## CPC - H04N 1/212: {Motion video recording combined with still video recording (television signal recording H04N5/76)} - H04N 5/772: {the recording apparatus and the television camera being placed in the same enclosure} - H04N 23/673: {based on contrast or high frequency components of image signals, e.g. hill climbing method} - H04N 23/70: Circuitry for compensating brightness variation in the scene - H04N 5/78266: {using more than one track for the recording of one television field or frame, i.e. segmented recording} - H04N 9/8042: {involving data reduction} - H04N: PICTORIAL COMMUNICATION, e.g. TELEVISION ## Abstract An image pickup apparatus capable of performing shooting action control appositely to each of different modes of shooting such as moving image shooting and still image shooting includes an instructing part for selectively instructing the apparatus to perform moving image shooting or still image shooting, and a control part for variably setting control characteristics for various control actions such as backlight correction control, white balance control, automatic focusing control, shutter speed control, etc., according to the instruction of the instructing part. ## Claims ### Claim 1 An image pickup apparatus comprising: a) image pickup means for converting image light obtained from an object into an electrical signal; b) instructing means for giving an instruction for moving image shooting or for still image shooting; c) driving-control means for driving-control over the moving image shooting and the still image shooting with predetermined different control characteristics, said driving-control means having focus control means; d) setting means for setting the different control characteristics of said focus control means according to the instruction of said instruction means; and e) control means for controlling said setting means to change said control characteristics of said focus control means according to the shooting mode set by said setting means and for executing a still image shooting operation after stopping said focus control means if focus control means is being driven when an instruction for still image shooting is made by said instruction means. ### Claim 2 (depends on 1) An apparatus according to claim 1, wherein said driving-control means includes automatic focusing control means. ### Claim 3 (depends on 1) An apparatus according to claim 1, wherein said driving-control means includes white balance control means. ### Claim 4 (depends on 1) An apparatus according to claim 1, wherein said driving-control means includes backlight correction control means. ### Claim 5 (depends on 1) An apparatus according to claim 1, wherein said driving-control means includes shutter speed control means. ### Claim 6 (depends on 1) An apparatus according to claim 1, wherein said image pickup means includes a CCD. ### Claim 7 (depends on 1) An apparatus according to claim 1, wherein said driving-control means includes a microcomputer. ### Claim 8 An electronic apparatus comprising: a) driving-control means for driving and controlling a focus adjusting system with different focus control characteristics according to whether said apparatus is in a still image photographing mode or a moving image photographing mode; b) switching means for switching between said still image photographing mode and said moving image photographing mode; setting means for variably setting said focus control characteristics in association with the switching of said switching means; and control means for executing a still image photographing operation after stopping said focus adjusting system if said focus adjusting system is being driven when an instruction for still photographing is made. ### Claim 9 (depends on 8) An apparatus according to claim 8, wherein said focus control characteristic includes a response characteristic of said focus adjusting means and the response characteristic of said focus adjusting system in said still image photographing mode is faster than in said moving image photographing mode. ### Claim 10 (depends on 8) An apparatus according to claim 8, wherein said control characteristic for said moving image photographing mode includes inhibition of an operation of said controlled system. ### Claim 11 (depends on 8) An apparatus according to claim 8, wherein said focus adjusting system includes an optical lens used for automatic focusing. ### Claim 12 (depends on 8) An apparatus according to claim 8 further comprising white balance control means for compensating white balance in an image signal. ### Claim 13 (depends on 8) An apparatus according to claim 8, further comprising display means for displaying the mode selected by said switching means in association with the switching of said switching means. ### Claim 14 An image recording apparatus having a moving image recording function and a still image recording function, comprising: focusing means for performing automatic focus adjustment control; operation means for giving an instruction to allow or inhibit an action of said focusing means and for designating a start timing for moving image recording or still image recording and for executing a still image recording operation after stopping said focusing means if focusing means is being driven when an instruction for still image recording is made; and recording means for recording the moving image and the still image on a recording medium according to an operation of said operation means. ### Claim 15 (depends on 14) An apparatus according to claim 14, wherein said operation means includes a trigger switch, and wherein said operation means is arranged to give the instruction to allow or inhibit the action of said focusing means according to a state of said trigger switch being operated with an open state, a half-pushed state or a fully pushed state. ### Claim 16 A recording image pickup apparatus capable of performing both moving image shooting and still image shooting, comprising: means for giving an instruction for commencement of the still image shooting and having a trigger switch being selectively operated with an open state, a half pushed state or a fully pushed state; detecting means for detecting information on an aperture value and information on an image pickup gain; and control means for controlling a shutter speed to a faster speed when the mode is changed from a first mode for effecting the moving image shooting to a second mode for effecting still image shooting on the basis of the instruction for commencement of the still image shooting and an output of said detecting means; said control means sets the first mode in the case of said trigger switch being not pushed, and calculating the shutter speed in the case of said trigger switch being in the half pushed state in said first mode, and executing a still image shooting operation when said trigger switch is in the fully pushed state.