Abstract: A projection display device includes an optical modulation element configured to modulate light outputting from a light source, and a projection unit configured to project light modulated by the optical modulation element on a projection screen. The projection display device includes an element control unit that controls the optical modulation element to display a test pattern image, an acquiring unit that acquires an image obtained by capturing the test pattern image from an image capture element that captures the test pattern image projected on the projection screen, and an adjusting unit that adjusts an image projected on the projection screen on the basis of the capture image acquired by the acquiring unit. The element control unit controls the optical modulation element such that a guidance image that guides focus adjustment of the image projected on the projection screen is displayed.

Abstract: A projection display device includes an optical modulation element configured to modulate light outputting from a light source, and a projection unit configured to project light modulated by the optical modulation element on a projection screen. The projection display device includes an element control unit that controls the optical modulation element to display a test pattern image, an acquiring unit that acquires an image obtained by capturing the test pattern image from an image capture element that captures the test pattern image projected on the projection screen, and an adjusting unit that adjusts an image projected on the projection screen on the basis of the capture image acquired by the acquiring unit. The element control unit controls the optical modulation element such that a guidance image that guides focus adjustment of the image projected on the projection screen is displayed.

Abstract: A projection-type image display apparatus includes an imaging light generation portion which generates imaging light, a housing which stores the imaging light generation portion, and a passage region provided in the housing, through which the imaging light emitted from the imaging light generation portion passes. The housing has a movable portion of which dimension in at least one direction varies, and the passage region is stored in the housing by means of the movable portion while imaging light is not projected.

Abstract: A projection type video display has a sensor which includes an image pick up device to take a projected image and the projection type video display projects an adjustment image to automatically implement the focus adjustment and the keystone distortion correction on the basis of output of the sensor.

Abstract: A projection type video display apparatus in which a display device transmits light emitted from a light source to project a video written into the display device is characterized by comprising person detection means for detecting a person who exists within a projected video area, and control means for changing the state of the projected video when the person detection means detects the person.

Abstract: A projection type video display apparatus in which a display device transmits light emitted from a light source to project a video written into the display device is characterized by comprising person detection means for detecting a person who exists within a projected video area, and control means for changing the state of the projected video when the person detection means detects the person.

Abstract: A projection type video display has a sensor which includes an image pick up device to take a projected image and the projection type video display projects an adjustment image to automatically implement the focus adjustment and the keystone distortion correction on the basis of output of the sensor.

Abstract: A central control system that monitors and remotely controls one or more terminal devices which may be part of an apparatus such as an imaging machine. Each terminal device communicates with the central control system at a predetermined time and relays the operational conditions of the apparatus to which it is associated. Relayed conditions may include information such as the number of imaging operations performed in a period of time. The central control system controls each of the terminal devices in accordance with the information transmitted from each of the terminal devices. The central control system supervises incoming transmissions from the terminal devices and detects when a terminal device has not communicated at its predetermined time. When this condition arises, the identity of the non-reporting terminal, as well as the predetermined time it was to have contacted the central control system, are displayed at the central control system.

Abstract: A centralized control system capable of remote controlling terminal devices such as a copying machine or automatic vending machine by using communication lines. The system displays information identifying the terminal devices which have not transmitted the information to a central unit after predetermined time. Further, the system is provided with a back-up power source for backing up a memory storing the information to be transmitted and an IC for clocking the present time. The information stored in the memory is to be transmitted when the power is supplied again in the case where the transmission has not been carried out at the predetermined time because the power source for the terminal device was shut off. Moreover, the system judges, in the case where an image forming apparatus is adapted as a terminal device, whether the image forming apparatus has recovered from trouble condition to normal condition by judging whether a copy paper is actually discharged.

Abstract: A control apparatus according to the present invention is a control apparatus collecting data related to copying machines and communicating with a centralized control unit on the basis of the data collected, including a communication device for calling the centralized control unit, a determination device for determining that connection with the centralized control device can not be made in spite of the fact that the communication device is activated, a setting device for setting a retransmission time on the basis of a random number in a predetermined time period in response to a determination output of the determination device, a timer device for counting the present time, and a control device for having the communication device call the centralized control unit again when the present time becomes the retransmission time.