# US 8,540,378 B2 · Projector and control method of projector > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 8,540,378 B2 - Document ID: US8540378B2 - Status: Granted - Kind: B2 - Application number: 13/032,994 - Filed: 2011-02-23 - Published: 2011-09-08 - Granted: 2013-09-24 - Earliest claimed: 2011-02-23 - Assignees: Seiko Epson Corporation - Applicants: Shunji Maruyama - Inventors: Shunji Maruyama - Web page: https://patentgrep.com/patent/US8540378B2 ## CPC - G03B 21/142: {Adjusting of projection optics} - G03B 3/12: adapted for remote control - G03B 21/147: {Optical correction of image distortions, e.g. keystone} - H04N 9/3185: {Geometric adjustment, e.g. keystone or convergence (optical or mechanical adjustment of convergence H04N9/317; using scanning means H04N3/22; optical or mechanical adjustments of projectors not peculiar to the presence of an electronic spatial light modulator G03B21/14)} - H04N 21/42204: {User interfaces specially adapted for controlling a client device through a remote control device; Remote control devices therefor (constructive details of casings for the remote control device H01H9/0235; user interfaces for controlling a tuning device of a television receiver through a remote control H03J9/00; remote control of peripheral devices connected to a television receiver through the remote control device of the television receiver H04B1/205)} - 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) - H04N: PICTORIAL COMMUNICATION, e.g. TELEVISION ## Abstract A projector includes: a lens position control unit which controls a projection position of an image by shifting a projection lens; a signal receiving unit which receives a position control start signal to start position control and a lens shift signal from a remote controller; a direction conversion memory unit which stores direction conversion information corresponding to the lens shift signal as information for performing a predetermined conversion of the shift direction of the projection lens; a shift direction converting unit which converts the shift direction of the projection lens based on the direction conversion information; a menu display unit which displays a direction conversion menu screen through which the direction conversion information is inputted; and a control unit which allows the menu display unit to display the direction conversion menu screen when a predetermined condition is satisfied at the time of reception of the position control start signal. ## Claims ### Claim 1 A projector controllable by remote operation using a remote controller, comprising: a lens position control unit which controls a projection position of an image by shifting a projection lens; a signal receiving unit which receives a position control start signal for allowing the lens position control unit to start position control and a lens shift signal for specifying a shift direction and shifting the projection lens in the specified shift direction based on input from the remote controller, the shift direction being perpendicular to an axis of the projection lens; a direction conversion memory unit which stores direction conversion information corresponding to the lens shift signal received by the signal receiving unit as information for performing a predetermined conversion of the shift direction of the projection lens, the direction conversion information being based on user input of a normal position or a suspended position of the projector; a shift direction converting unit which converts the shift direction of the projection lens based on the direction conversion information stored in the direction conversion memory unit; a menu display unit which displays a direction conversion menu screen through which the direction conversion information is inputted; and a control unit which allows the menu display unit to display the direction conversion menu screen when a predetermined condition is satisfied at the time of reception of the position control start signal by the signal receiving unit. ### Claim 2 (depends on 1) The projector according to claim 1, wherein the direction conversion information stored in the direction conversion memory unit for performing the predetermined conversion is information indicating whether the shift direction of the projection lens is reversed or not. ### Claim 3 (depends on 1) The projector according to claim 1, further comprising: an installation position memory unit which stores either a normal position corresponding to a condition that the projector main body is placed in a predetermined standard position or a suspended position corresponding to a condition that the projector main body is placed upside down as installation position information of the projector main body, wherein the predetermined condition is a condition in which the current installation position information currently stored in the installation position memory unit is different from the previous installation position information stored in the installation position memory unit at the time of previous reception of the position control start signal. ### Claim 4 (depends on 2) The projector according to claim 2, further comprising: an installation position memory unit which stores either a normal position corresponding to a condition that the projector main body is placed in a predetermined standard position or a suspended position corresponding to a condition that the projector main body is placed upside down as installation position information of the projector main body, wherein the predetermined condition corresponds to a setting in which the installation position information stored in the installation position memory unit is set at the normal position with the direction conversion information of the direction conversion memory unit set at reverse, or a setting in which the installation position information stored in the installation position memory unit is set at the suspended position with the direction conversion information of the direction conversion memory unit set at non-reverse. ### Claim 5 (depends on 1) The projector according to claim 1, wherein the lens shift signal includes the position control start signal. ### Claim 6 (depends on 1) The projector according to claim 1, wherein the direction conversion menu screen includes the direction reverse information which is highlighted according to the current installation mode. ### Claim 7 A control method of a projector that is controllable by remote operation using a remote controller and includes a lens position control unit which controls a projection position of an image by shifting a projection lens, a signal receiving unit which receives a position control start signal for allowing the lens position control unit to start position control from the remote controller, and a lens shift signal for specifying a shift direction and shifting the projection lens in the specified shift direction based on input from the remote controller, the shift direction being perpendicular to an axis of the projection lens, a direction conversion memory unit which stores direction conversion information corresponding to the lens shift signal received by the signal receiving unit as information for performing a predetermined conversion of the shift direction of the projection lens, a shift direction converting unit which converts the shift direction of the projection lens based on the direction conversion information stored in the direction conversion memory unit, and a menu display unit which displays a direction conversion menu screen through which the direction conversion information is inputted, the method comprising: allowing the signal receiving unit to receive the position control start signal from the remote controller; determining whether a predetermined condition is satisfied when the position control start signal is received; and allowing the menu display unit to display the direction conversion menu screen when it is determined that the predetermined condition is satisfied, and receiving user input of a normal position or a suspended position of the projector. ### Claim 8 (depends on 7) The control method according to claim 7, wherein the direction conversion information stored in the direction conversion memory unit for performing the predetermined conversion is information indicating whether the shift direction of the projection lens is reversed or not. ### Claim 9 (depends on 7) The control method according to claim 7, the projector further including an installation position memory unit which stores either a normal position corresponding to a condition that the projector main body is placed in a predetermined standard position or a suspended position corresponding to a condition that the projector main body is placed upside down as installation position information of the projector main body, wherein the predetermined condition is a condition in which the current installation position information currently stored in the installation position memory unit is different from the previous installation position information stored in the installation position memory unit at the time of previous reception of the position control start signal. ### Claim 10 (depends on 8) The control method according to claim 8, the projector further including an installation position memory unit which stores either a normal position corresponding to a condition that the projector main body is placed in a predetermined standard position or a suspended position corresponding to a condition that the projector main body is placed upside down as installation position information of the projector main body, wherein the predetermined condition corresponds to a setting in which the installation position information stored in the installation position memory unit is set at the normal position with the direction conversion information of the direction conversion memory unit set at reverse, or a setting in which the installation position information stored in the installation position memory unit is set at the suspended position with the direction conversion information of the direction conversion memory unit set at non-reverse. ### Claim 11 (depends on 7) The control method according to claim 7, wherein the lens shift signal includes the position control start signal. ### Claim 12 (depends on 7) The control method according to claim 7, wherein the direction conversion menu screen includes the direction reverse information which is highlighted according to the current installation mode.