# US 2019/0174064 A1 · Image capture system, image capturing apparatus, lens unit, control methods therefor, and storage medium > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2019/0174064 A1 - Document ID: US20190174064A1 - Status: Published application - Kind: A1 - Application number: 16/269,038 - Filed: 2019-02-06 - Published: 2019-06-06 - Earliest claimed: 2016-03-23 - Assignees: Canon Kabushiki Kaisha - Applicants: Canon Kabushiki Kaisha - Inventors: Atsushi Sugita - Web page: https://patentgrep.com/patent/US20190174064A1 ## CPC - H04N 23/687: {by shifting the lens or sensor position} - G02B 7/14: adapted to interchange lenses {(G02B7/027 takes precedence)} - G02B 27/646: {compensating for small deviations, e.g. due to vibration or shake (movement of one or more optical elements for control of motion blur in cameras, projectors or printers G03B2205/0007; image stabilisation in cameras peculiar to the presence or use of an electronic image sensor H04N23/68)} - H04N 5/04: Synchronising (for television systems using pulse code modulation H04N7/56) - H04N 23/55: Optical parts specially adapted for electronic image sensors; Mounting thereof - H04N 23/663: for controlling interchangeable camera parts based on electronic image sensor signals - H04N 23/67: Focus control based on electronic image sensor signals - H04N 23/6811: {based on the image signal} - H04N 23/6815: {by distinguishing pan or tilt from motion} - H04N 23/69: Control of means for changing angle of the field of view, e.g. optical zoom objectives or electronic zooming - H04N 23/73: by influencing the exposure time - H04N: PICTORIAL COMMUNICATION, e.g. TELEVISION - G02B: OPTICAL ELEMENTS, SYSTEMS OR APPARATUS ## Abstract An image capturing apparatus is configured to have an interchangeable lens detachably mounted thereto, and is provided with an image capturing unit configured to obtain a captured image, a synchronous signal generation unit configured to generate a synchronous signal for reading out the captured image continuously from the image capturing unit, a communication unit configured to transmit the synchronous signal to the interchangeable lens, and a measurement unit configured to measure a delay time from a timing at which the synchronous signal is generated until a timing at which the communication unit transmits the synchronous signal to the interchangeable lens, the delay time being transmitted to the interchangeable lens by the communication unit together with the synchronous signal. ## Claims ### Claim 1 A lens apparatus capable of being attached to an image capturing apparatus, comprising: at least one processor or circuit configured to operate as: an obtaining unit configured to obtain lens information; a communication unit configured to receive first information corresponding to generation of a synchronous signal of the image capturing apparatus and second information corresponding to time, and to transmit the lens information to the image capturing apparatus; a acquiring unit configured to acquire third information corresponding to a timing at which the receiving unit receives the first information; and a determination unit configured to determine, based on the second information and the third information, fourth information corresponding to time for the obtaining unit to obtain the lens information. ### Claim 2 (depends on 1) The lens apparatus according to claim 1, wherein second information corresponds to the time from a timing at which the synchronous signal is generated to a timing at which the second information is transmitted. ### Claim 3 (depends on 1) The lens apparatus according to claim 1, wherein the communication unit further receives fifth information relating to time for the obtaining unit to obtain the lens information, wherein the determination unit determines the fourth information based on the fifth information. ### Claim 4 (depends on 1) The lens apparatus according to claim 1, wherein at least one processor or circuit is configured to further operate as: an angular velocity detection unit configured to obtain first angular velocity information at which the interchangeable lens moves, wherein the lens information is the first angular velocity information. ### Claim 5 (depends on 4) The lens apparatus according to claim 4, further comprising: a shift lens configured to move in a direction orthogonal to an optical axis of the lens apparatus, wherein the communication unit further receives second angular velocity information, which is angular velocity information of the object based on the first angular velocity information, from the image capturing apparatus, wherein the at least one processor or circuit is configured to further operate as an image stabilization unit configured to perform image stabilization by controlling the shift lens based on the second angular velocity information. ### Claim 6 (depends on 1) The lens apparatus according to claim 1, further comprising: a focusing lens, wherein the at least one processor or circuit is configured to further operate as a position obtaining unit configured to obtain a position of the focusing lens, wherein the lens information is information on the position of the focusing lens. ### Claim 7 (depends on 1) The lens apparatus according to claim 1, further comprising: a zoom lens, wherein the at least one processor or circuit is configured to further operate as a focal length obtaining unit configured to obtain a focal length of the zoom lens, wherein the lens information is information on the focal length. ### Claim 8 An image capture apparatus capable of attaching a lens apparatus, comprising: at least one processor or circuit configured to operate as: an image capturing unit configured to obtain a captured image; a synchronous signal generation unit configured to generate a synchronous signal for reading out the captured image from the image capturing unit; a communication unit configured to transmit first information corresponding to generation of a synchronous signal and second information corresponding to the time from a timing at which the synchronous signal is generated to a timing at which the communication unit transmits the first information to the lens apparatus, and to receive the lens information from the lens apparatus. ### Claim 9 (depends on 8) The image capture apparatus according to claim 8, wherein the lens information is an angular velocity, and wherein at least one processor or circuit is configured to further operate as: a motion vector detection unit configured to detect a motion vector from the captured image read out from the image capturing unit; and an angular velocity calculation unit configured to calculate an angular velocity at which an object moves, based on the motion vector and the lens information received from the lens apparatus. ### Claim 10 (depends on 8) The image capture apparatus according to claim 8 wherein at least one processor or circuit is configured to further operate as a determination unit configured to determine timing for the angular velocity detection unit to obtain the angular velocity, which is the lens information, such that the timing for obtaining the angular velocity coincides with a timing for detecting the motion vector. ### Claim 11 (depends on 8) The image capture apparatus according to claim 8, the lens information is information on the position of the focusing lens. ### Claim 12 (depends on 8) The image capture apparatus according to claim 8, wherein the lens information is information on the focal length. ### Claim 13 (depends on 8) The image capture apparatus according to claim 8, further comprising: a periodic communication determination unit configured to determine, as periodic communication, a plurality of communications to be communicated at a timing of the synchronous signal, and a first communication unit sets the synchronous signal communication to a beginning of the periodic communication and implements the periodic communication. ### Claim 14 A method of controlling a lens apparatus capable of being attached to an image capturing apparatus, comprising: obtaining lens information; receiving first information corresponding to generation of a synchronous signal of the image capturing apparatus and second information corresponding to time, and transmitting the lens information to the image capturing apparatus; acquiring third information corresponding to a timing at which the first information is received in the receiving; and determining, based on the second information and the third information, fourth information corresponding to time for the obtaining. ### Claim 15 A method of controlling an image capture apparatus capable of attaching a lens apparatus, comprising: obtaining a captured image; generating a synchronous signal for reading out the captured image from an image capturing unit; transmitting first information corresponding to generation of a synchronous signal and second information corresponding to the time from a timing at which the synchronous signal is generated to a timing at which the transmitting of the first information to the lens apparatus, and receiving the lens information from the lens apparatus.