Canon Kabushiki Kaisha

Motohisa Ito

Daisuke Shiraishi

Koji Aoki

Yoshiyuki Takagi

A memory controller configured to control a dynamic random access memory (DRAM) includes a first control circuit and a second control circuit. The first control circuit is configured to store a request received by the memory controller in a first storage circuit, and select a request from all requests stored in the first storage circuit. The second control circuit is configured to store the request selected by the first control circuit in a second storage circuit, reorder requests stored in the second storage circuit, generate a DRAM command, and issue the DRAM command to the DRAM. The first control circuit is configured to select the request based on target banks and target pages of the requests stored in the second storage circuit, and a state of a bank or page of the DRAM.

Memory controller to process requests for DRAM, control method for memory controller, and storage medium

A memory controller that is formed to be able to issue a first write command for writing data of a predetermined length into a DRAM and a second write command for writing data which is less than the predetermined length in the DRAM is provided. The memory controller comprises a deciding unit configured to decide an issuance order of a request stored in the storage unit. In a period from the issuance of a preceding DRAM command until a second write command targeting the same bank as the preceding DRAM command is issued, if another DRAM command targeting a bank different from the bank targeted by the preceding DRAM command can be issued, the deciding unit will decide the issuance order so that the other DRAM command that can be issued will be issued before the second write command.

Memory controller and memory control method that decides an order of issuing dram commands based on whether a command has a penalty period

A memory controller is able to issue a first write command for writing data of a predetermined length into a DRAM and a second write command for writing data which is less than the predetermined length in the DRAM. The memory controller includes a deciding unit configured to decide an issuance order of one or more requests stored in a storage unit. In a period from the issuance of a preceding DRAM command until a second write command targeting the same bank as the preceding DRAM command is issued, if another DRAM command targeting a bank different from the bank targeted by the preceding DRAM command can be issued, the deciding unit will decide the issuance order so that the other DRAM command that can be issued will be issued before the second write command.

DRAM access technique to reduce latency due to write command length

An image displaying apparatus comprises a first light source section and a second light source section each configured to be able to change a percentage of a radiation luminous flux, and a controlling unit configured to control the first light source section and the second light source section such that the percentage of the radiation luminous flux obtained by combining together the radiation luminous flux from the first light source section and the radiation luminous flux from the second light source section continuously changes.

Image displaying apparatus, controlling method thereof, and program

A projected image including at least an image of an overlapping region, on which a first video and a second video are superimposed, is obtained. A correction value for each unit region is determined based on the projected image and an image of a corresponding region in the first video. The corresponding region corresponds to the overlapping region, and the unit region is divided from the overlapping region. Projection-position adjustment based on the correction value is applied to the first video in each unit region.

Image processing apparatus, image processing method, and projection apparatus

A projection apparatus for projecting a plurality of stereoscopic images such that portions thereof overlap each other and displaying one stereoscopic image, the apparatus includes a projection unit adapted to project an indicator that is an image for adjusting a stereoscopic degree corresponding to a parallax between a projected left image and a projected right image, in an overlapping region where the plurality of stereoscopic images overlap each other; a detection unit adapted to detect a parallax between an indicator in the left image and an indicator in the right image based on a captured image of a projected indicator; and an adjustment unit adapted to adjust stereoscopic degrees of the plurality of stereoscopic images by an adjustment amount that is determined based on the detected parallax.

Projection apparatus and method for controlling the same, and a computer-readable storage medium

This invention provides a technique capable of efficiently setting a projector. A display instruction to display the setting window of at least one of a plurality of projectors is accepted. If a predetermined area on a multi-projection area in which the setting window of the projector is displayed crosses display areas of a plurality of second projectors of the plurality of projectors, each of the plurality of second projectors displays a partial image of the setting window in response to acceptance of the display instruction.

Display control apparatus and display control method

An image display apparatus projects a first image by using a light source constituted by a plurality of point light sources, performs lighting in a unit of lighting formed from at least one point light source of the plurality of point light sources, and controls, in the unit of lighting, lighting in an overlapped area between the first image and a second image projected from another image display apparatus so as to equalize luminances in the overlapped area and a non-overlapped area when the second image is a solid black frame.

Image display apparatus, method of controlling the same, and non-transitory computer-readable storage medium

A management apparatus for managing a production apparatus that executes a plurality of processes in accordance with a production plan detects an amount of a release-forgotten memory area that is kept allocated on a memory of the production apparatus by each process even after completion of the process. The management apparatus determines an amount of remaining memory based on the detected amount of the release-forgotten memory area and retrieves a process executable with the amount of remaining memory. The management apparatus determines a process to be executed next in accordance with either a result of the retrieval executed based on the detected amount of the release-forgotten memory area or the production plan and controls the production apparatus to execute the determined process.

Determining executable processes based on a size of detected release-forgotten memory area and selecting a next process that achieves a highest production quantity

An image display apparatus having a display screen configured of a plurality of pixels includes a measurement unit adapted to measure a distribution of light amount when the display screen carries out a display, a detection unit adapted to detect a display problem region in the display screen based on an imbalance in the display screen of the distribution of the measured light amount when a uniform image is displayed in the display screen, and a correction unit adapted to perform correction on an image signal that is to be displayed in the display screen so as to suppress the influence of the display problem region on the display. The correction unit includes an expected value calculation unit, a difference value calculation unit adapted to calculate a difference value between an expected value of a distribution of light amount and a measured value of a distribution of light amount when an image based on the image signal corrected by the correction unit is displayed in the display screen, and a correction amount calculation unit adapted to calculate a correction amount for the display problem region detected by the detection unit based on the difference value.

Image display apparatus, control method thereof, and computer-readable storage medium

An image processing apparatus and its method which easily change the definition of pixel attribute in an image processing unit even if the image processing unit has been realized by hardware such as a semiconductor integrated circuit. The image processing apparatus inputs image data and first pixel information indicating information on a pixel of the image data. A first selectorselects predetermined bits from the first pixel information and generates second pixel information. A second selectorselects one of the plural third pixel information stored in a register filebased on the second pixel information and outputs the selected third pixel information as fourth pixel information. A decoderdetermines a pixel attribute based on the fourth pixel information. Then, image processing is performed on the image data based on the determined pixel attribute. At this time, the selection bits by the first selector and the data stored in the register fileare variable.

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Chiba, Japan

Motohisa Ito