CN118215955A - Information processing system and information processing method - Google Patents

Abstract

The present technology relates to an information processing system and an information processing method for displaying an image without generating scanning stripes. A display unit is divided into a plurality of partitions, and pixels included in the partitions are driven by switching the driven pixels by switching the lines to be scanned among the plurality of lines. At this time, any one of the direction of the scanning and the order of the lines to be scanned is different.

Description

Information processing system and information processing method

Technical Field

The present technology relates to an information processing system and an information processing method, and more particularly, to an information processing system and an information processing method that prevent a display image from generating scan stripes.

Background

Patent document 1 discloses a display device in which one pixel is caused to emit light a plurality of times in one frame period in an active PWM driving method in a display panel.

Prior art literature

Patent literature

Patent document 1: international publication No. 2018/164105

Disclosure of Invention

Technical problem to be solved by the invention

For example, in a passive LED display, light emission of pixels is repeated by repeating scanning during one frame of a displayed image, and when a moving image is displayed, a stripe (scanning stripe) may be generated by scanning in synchronization with the moving image.

The present technology has been made in view of such a situation, and does not cause a scan line in a display image.

Technical scheme for solving technical problems

The information processing system of the present technology includes: a display unit; and a plurality of drivers provided corresponding to each of a plurality of partitions dividing the display unit, the plurality of drivers driving pixels included in the partition by switching pixels to be driven by switching lines to be scanned among a plurality of lines, the plurality of drivers including drivers different from any one of an orientation of the scanning and an order of the lines to be scanned.

The information processing method of the present technology is an information processing method of an information processing system having: a display unit; and a plurality of drivers provided corresponding to each of a plurality of partitions dividing the display section, the plurality of drivers driving pixels included in the partition by switching the pixels to be driven by switching the lines to be scanned among the plurality of lines, the plurality of drivers driving the pixels included in the partition in such a manner that any one of an orientation of the scanning and an order of the lines to be scanned is different.

In the present technology, a display section is divided into a plurality of partitions, and pixels included in the partitions are driven by switching the pixels to be driven by switching the lines to be scanned among the plurality of lines. At this time, any one of the orientation of the scanning and the order of the lines in which the scanning is performed is different.

Drawings

Fig. 1 is a diagram describing a configuration example of a display system of the present disclosure.

Fig. 2 is a diagram describing a configuration example of the video wall controller and the display unit of fig. 1.

Fig. 3 is a diagram describing a configuration example of the LED array.

Fig. 4 is a diagram describing a screen composition of a video wall.

Fig. 5 is a diagram describing a configuration related to display control of the cabinet.

Fig. 6 is a diagram illustrating a configuration of an LED array (driver coverage).

Fig. 7 is a diagram describing conventional scanning control of an LED array by an LED driver.

Fig. 8 is a diagram describing a technical problem of conventional scan control.

Fig. 9 is a block diagram showing a configuration example for performing scan setting of each driver coverage (LED array) in the wall.

Fig. 10 is a diagram describing a first mode of scanning control of the LED array.

Fig. 11 is a diagram describing a second mode of scanning control of the LED array.

Fig. 12 is a diagram describing a third mode of scanning control of the LED array.

Fig. 13 is a diagram describing a fourth mode of scanning control of the LED array.

Fig. 14 is a diagram showing a configuration example of the module.

Fig. 15 is a diagram describing a case where conventional scan control is applied to the module of fig. 14.

Fig. 16 is a diagram describing a case of applying the second mode or the third mode of the scan control to the module of fig. 14.

Fig. 17 is a diagram describing a case of applying the fourth mode of the scan control to the module of fig. 14.

Fig. 18 is a flowchart illustrating a process procedure of switching the orientation of scanning when the third mode of scanning control is applied to the module of fig. 14.

Fig. 19 is a diagram illustrating data of a scanning direction setting table.

Fig. 20 is a diagram showing a case where the scanning direction is changed based on the data of the scanning direction setting table of fig. 19.

Fig. 21 is a flowchart illustrating a process procedure regarding the order of switching the light emitting lines when the fourth mode of the scan control is applied to the module of fig. 14.

Fig. 22 is a diagram illustrating data of a scan order (light emission line order) setting table.

Detailed Description

Embodiments of the present technology are described below with reference to the accompanying drawings.

Implementation of a display System to which the present technology is applied

The present disclosure relates to a technology applicable to a direct-view LED (LIGHT EMITTING Diode) display. In the present disclosure, as an embodiment of a display to which the present technology is applied, a direct-view LED display to which the present technology is applied is described.

The display system 11 of fig. 1 displays video content on a large display configured by a plurality of display units arranged in a tiled fashion.

In more detail, the display system 11 is constituted by a PC (personal computer) 30, a video server 31, a video wall controller 32, and a video wall 33.

The PC (personal computer) 30 is a general-purpose computer, accepts an operation input from a user, and supplies a command corresponding to the operation content to the video wall controller 32. The PC30 is mainly used to control the video wall controller 32. The processing in the PC30 may be performed by the video wall controller 32, or the video wall controller 32 may be provided with an input unit for performing an operation input by a user.

The video server 31 is configured by, for example, a server computer or the like, and supplies video signal data (video data representing a video displayed on a display) of video content or the like to the video wall controller 32. The device for supplying video data to the video wall controller 32 may be a video camera or any type of player, in addition to a server computer.

The video wall controller 32 operates in accordance with a command supplied from the PC30, and distributes and displays the video data from the video server 31 to the display units 51-1 to 51-n (n is the number of display units) constituting the video wall 33.

Note that, when it is not necessary to separately distinguish between the display units 51-1 to 51-n, it is simply referred to as the display unit 51. The display unit 51 is a device that controls the display of each of a plurality of partition portions called a Cabinet (Cabinet) 202, which will be described later, constituting a screen of the video wall 33, and is also called a display Cabinet or a Cabinet.

As shown in the upper right of fig. 1, the video wall 33 is configured by arranging the display units 51-1 to 51-n, which are constituted by LEDs and whose pixels are arranged in an array, in a flat shape, and the images displayed by the respective display units 51 are combined in a flat shape, so that one image is displayed as the entire video wall 33.

The video wall controller 32 performs predetermined signal processing on the video data supplied from the video server 31, and distributes and supplies the video data according to the arrangement of the display units 51-1 to 51-n, controls the respective displays of the display units 51-1 to 51-n, and controls the video wall 33 as a whole to display one image.

The video wall controller 32 and the video wall 33 may be integrally formed, or may be integrally formed as a display device (information processing system). In this specification, a system refers to a collection of a plurality of components (devices, modules (components), etc.), whether or not all the components are in the same housing. Thus, a plurality of devices which are accommodated in different housings and connected via a network, and one device which accommodates a plurality of modules in one housing are all systems.

Detailed construction of video wall controller and display Unit

Next, a detailed configuration example of the video wall controller 32 and the display unit 51 will be described with reference to fig. 2.

The video wall controller 32 is provided with a LAN (Local Area Network ) terminal 71, an HDMI (High Definition Multimedia Interface, high-definition multimedia Interface) (registered trademark) terminal 72A, DP (Display Port, port) terminal 72B, DVI (Digital Visual Interface, digital video Interface) terminal 72C, SDI (SERIAL DIGITAL INTERFACE ) terminal 72D, a network IF (Interface) 75, an MPU (Micro Processor Unit, micro processing unit) 76, a signal input IF77, a signal processing section 78, a DRAM (Dynamic Random Access Memory ) 79, a signal distribution section 80, and output IF81-1 to output IF81-n.

The LAN (Local Area Network ) terminal 71 is, for example, a connection terminal such as a LAN cable, and realizes communication with a Personal Computer (PC) 30 operated by a user and supplying a control command or the like corresponding to the operation content to the video wall controller 32 via the LAN, and supplies the input control command or the like to the MPU76 via the network IF 75.

The LAN terminal 71 may be physically connected to a wired LAN cable, or may be connected by a so-called wireless LAN, which is realized by wireless communication.

The MPU76 receives input of a control command supplied from the PC30 via the LAN terminal 71 and the network IF75, and supplies a control signal corresponding to the received control command to the signal processing section 78. The MPU76 controls not only the signal processing section 78 but also the signal input IF77 and the signal distributing section 80.

The HDMI terminal 72A, DP terminal 72B, DVI terminal 72C and the SDI terminal 72D are input terminals for video data, and are connected to, for example, a server computer functioning as the video server 31, and data composed of video signals is supplied to the signal processing unit 78 via the signal input IF 77.

In fig. 2, although an example is shown in which the video server 31 and the HDMI terminal 72A are connected, the HDMI terminal 72A, DP, the terminal 72B, DVI, and the SDI terminal 72C are different in specification only, and basically have the same function, and therefore, any one of them is selected and connected as needed.

The signal processing unit 78 adjusts the magnification/reduction ratio, color temperature, contrast, brightness, white balance, and the like of the image supplied as the image data via the signal input IF77 in accordance with the control signal supplied from the MPU76, and supplies the adjusted image data to the signal distribution unit 80. At this time, the signal processing section 78 expands the video data using the connected DRAM79 as necessary, performs signal processing based on the control signal, and supplies the signal processing result to the signal distribution section 80.

The signal distribution unit 80 distributes the video data subjected to the signal processing supplied from the signal processing unit 78, and individually distributes the video data to the display units 51-1 to 51-n via the outputs IF81-1 to 81-n. Depending on the size of the video wall 33 formed by the display unit 51, some of the outputs IF81-1 to IF81-n are not used. The MPU76 determines an output IF to be used among the outputs IF81-1 to 81-n based on the size of the video wall 33, and calculates the range of video data allocated to the output IF to be used and supplies the calculation result thereof to the signal allocation section 80. The signal distribution section 80 distributes the image data to the output IF to be used among the output IF81-1 to the output IF81-n based on the calculation result from the MPU 76.

The display unit 51 includes a driver control unit 91 and an LED block 92.

The driver control unit 91 supplies image data for controlling the light emission of the LEDs constituting the LED arrays 122-1 to 122-M to the plurality of LED drivers 121-1 to 121-M (M is the number of LED drivers) constituting the LED block 92.

More specifically, the driver control unit 91 includes a signal input IF111, a signal processing unit 112, a DRAM113, and outputs IF114-1 to 114-M.

The signal input IF111 receives an input of video data supplied from the video wall controller 32, and supplies the received input to the signal processing unit 112.

The signal processing unit 112 performs correction of the color or brightness of each display unit 51 based on the video data supplied from the signal input IF111, generates data for setting the light emission intensities of the LEDs constituting the LED arrays 122-1 to 122-M, and distributes the LED drivers 121-1 to 121-M supplied to the LED block 92 via the outputs IF114-1 to 114-M.

More specifically, the video data also includes information such as the length of the blanking time specified in the general standard. Accordingly, the signal processing unit 112 generates data for setting the number of lines (Scan lines ), the number of times of repeated light emission between one frame period (the number of times of repeated scanning), and the light emission intensity of each LED constituting the LED arrays 122-1 to 122-M, taking into consideration the information such as the length of the blanking time included in the video data, and distributes the data to be supplied to the LED drivers 121-1 to 121-M of the LED block 92 via the outputs IF114-1 to 114-M.

The LED block 92 includes LED drivers 121-1 to 121-M and LED arrays 122-1 to 122-M. The LED block is also referred to as an LED module.

The LED drivers 121-1 to 121-M perform PWM (Pulse Width Modulation ) control of the light emission of the LEDs 141 arranged in an array form corresponding to the LED arrays 122-1 to 122-M based on the data for setting the light emission intensity of the LEDs 141 included in the image data supplied from the driver control section 91.

Constituent example of LED array

Next, a configuration example of the LED array 122 will be described with reference to fig. 3. Fig. 3 shows a configuration example of the LED array 122 in the passive matrix driving type LED driving wiring. Accordingly, the LEDs 141 of the LED array 122 are controlled to emit light in a passive matrix driving manner.

In the LED array 122 of fig. 3, the Common Cathode type or Common Anode type LEDs 141 are arranged in an array, and each LED141 is connected to a Sig line (luminance control line) routed in the up-down direction and a Scan line (row selection line) routed in the left-right direction.

In the LED array 122 of fig. 3, when Scan line1 is set to a predetermined fixed potential and turned ON, a current is supplied from Sig line to the LEDs, and the LED array turns into a light emitting operation. Note that, as the predetermined fixed potential, gnd=0v potential is general, but not limited thereto.

Screen construction of video wall

Fig. 4 is a diagram describing the screen configuration of the video wall 33. In fig. 4a, a wall 201 represents a screen (display section, display panel) constituted by the video wall 33 of fig. 1, and represents the entire screen on which an image supplied as image data from the video server 31 to the video wall controller 32 is displayed. The wall 201 is also a range of the arrangement of the LEDs 141 (light emitting elements) constituting the screen of the video wall 33. The screen of the wall 201 is not limited to a specific shape, for example, a shape having a plane along which it is flat, curved, or bent, and a shape having a substantially quadrangular (rectangular) outline. The wall 201 is constituted by a plurality of detachable cabinets 202 arranged in the up-down, left-right direction. It should be noted that the screen of the wall 201 may be any shape.

Fig. 4 (B) is a diagram showing any one of the plurality of cabinets 202 constituting the wall 201 of fig. 4 (a) in an enlarged manner. Cabinet 202 represents a partition of the screen of wall 201 that is controlled for display by the various display units 51-1 through 51-n of fig. 1. The screen (partition) of each cabinet 202 is not limited to a specific shape, and has a quadrilateral shape in outline. The cabinets 202 may be physically separated from each other, and are detachably attached to a support body, not shown, in a predetermined arrangement, for example, to form a wall 201. The cabinet 202 is formed by arranging a plurality of modules 203 in the up-down, left-right direction.

Fig. 4 (C) is a diagram illustrating a part of any one of the plurality of modules 203 constituting the cabinet 202 of fig. 4 (B) with enlargement. The module 203 represents a partition in which a plurality of LED arrays 122 (and LED drivers 121) mounted on one substrate and integrated are arranged in a screen (partition) of the cabinet 202. The screen (partition) of each module 203 is not limited to a specific shape, and has a quadrilateral shape in outline. The modules 203 are physically separated from each other by separation of the substrate on which the LED array 122 is mounted. For example, in the manufacturing process, the plurality of LED arrays 122 are mounted on respective substrates corresponding to the respective modules 203 in an up-down-left-right direction, and the respective substrates are fixed to a support body, not shown, in a predetermined arrangement, so that the cabinet 202 is configured. One LED array 122 is constituted by a plurality of LEDs 141 (LED elements) controlled by one LED driver 121. If a partition on the screen where one LED array 122 is arranged is referred to as a driver coverage 204 (or a region of a driver), the module 203 is configured by arranging a plurality of driver coverage 204 in the up-down-left-right direction.

Fig. 4 (D) is a diagram showing any one of the plurality of driver coverage areas 204 (LED arrays 122) constituting the module 203 of fig. 4 (C) in an enlarged manner. The driver coverage 204 (LED array 122) has the following composition: the LEDs 141 (141R, 141G, 141B) of a plurality of pixel amounts are arranged along a line of a predetermined line direction (for example, left-right direction), and the LEDs 141 of a plurality of lines are arranged along a scanning direction (for example, up-down direction) perpendicular to the line direction. The LED141 of each pixel is composed of three LEDs 141R, LED G and 141B that emit light of each color wavelength of RGB. The LEDs 141R, LED G and 141B are drawn on the drawing according to different density, and the RGB LEDs 141R, LED G and 141B of one pixel are arranged along the line direction. However, the arrangement of the RGB LEDs 141R, LED G and 141B of one pixel is not limited to the arrangement along the line direction, and may be arranged close to each other, and the RGB LEDs 141R, LED G and 141B are considered to be arranged on the same line. When the LED141R, LED G and the LED141B are not distinguished, they are simply referred to as the LED141. If one luminance control wiring (Sig line of fig. 3) that transmits a control signal for controlling the light emission of the LEDs 141 arranged in the scanning direction is taken as a Channel (CH), there is a channel number (CH number) of 3×pixel number in the line direction (left-right direction). The driver coverage area 204 (LED array 122) is constituted by a plurality of LEDs 141 controlled by one LED driver 121 being arrayed in the line direction and the scanning direction. The line direction is the arrangement direction of the LEDs 141 connected to the same line selection wiring among the plurality of line selection wirings (Scan lines) in fig. 3, and the scanning direction is the direction perpendicular to the line direction. When the row selection wirings are provided along the up-down direction and the LEDs 141 connected to the same row selection wiring are arranged along the up-down direction, the line direction is the up-down direction and the scanning direction is the left-right direction. The line direction and the scanning direction may be either the up-down direction or the left-right direction, and the line direction and the scanning direction may be changed according to the wiring on the substrate or according to the direction in which the substrate on which the LED array 122 is mounted is provided to the screen.

Structural example of cabinet

Fig. 5 is a diagram describing a configuration related to display control of the cabinet 202 of fig. 4. In fig. 5, video data (video source) representing a video displayed on the wall 201 is supplied to the video wall controller 32 shown in fig. 1. The video wall controller 32 generates video data representing a video displayed on each cabinet 202 based on the supplied video data. The video wall controller 32 supplies the generated image data of each cabinet 202 to the display unit 51 corresponding to the respective cabinet 202. The image displayed on each cabinet 202 corresponds to the partition of each cabinet 202 obtained when the entire image displayed on the wall 201 is divided into the partitions of each cabinet 202.

If one cabinet 202 is focused, as shown in the lower part of fig. 5, the display unit 51 corresponding to the focused cabinet 202 has a signal processing substrate 251 and a plurality of modules 203-1 to 203-L (L is the number of modules 203 in the cabinet 202). A circuit that executes the processing of the driver control section 91 including the signal processing section 112 of fig. 2 is mounted on the signal processing substrate 251. The modules 203-1 to 203-L have a plurality of LED drivers 121-1 to 121-D and LED arrays 122-1 to 122-D (D is the number of LED arrays 122 constituting the module 203), respectively. The modules 203-1 to 203-L correspond to the module 203 of fig. 4, respectively. The LED arrays 122-1 to 122-D are mounted on the substrate corresponding to the module 203 of fig. 4, and are a plurality of LED arrays 122 constituting the screen of the module 203. The LED drivers 121-1 to 121-D are mounted on the substrate corresponding to the module 203 of fig. 4, and control the LED drivers 121 of the respective LED arrays 122-1 to 122-D. In fig. 2, the LED drivers 121-1 to 121-D and the LED arrays 122-1 to 122-D correspond to the D LED drivers 121 mounted on the same substrate and the D LED arrays 122 controlled by the LED drivers 121-1 to 121-M and the LED arrays 122-1 to 122-M in the LED block 92.

The signal processing board 251 (signal processing section 112) generates video data representing video displayed on each of the modules 203-1 to 203-L based on the video data supplied from the video wall controller 32. The signal processing section 112 supplies the generated image data of each of the modules 203-1 to 203-L to the respective modules 203-1 to 203-L.

The images displayed on the respective modules 203-1 to 203-L are images corresponding to the partitions of the respective modules 203-1 to 203-L obtained when the images displayed on the cabinet 202 are divided into the partitions of the respective modules 203-1 to 203-L. The images displayed on the respective modules 203-1 to 203-L are composed of the images displayed on the respective partitions of the LED arrays 122-1 to 122-D (the respective driver coverage areas 204) of the respective modules 203-1 to 203-L. The image data supplied from the signal processing substrate 251 to the modules 203-1 to 203-L includes image data representing an image of each of the LED arrays 122-1 to 122-D constituting the respective modules 203-1 to 203-L. Image data representing an image of each of the LED arrays 122-1 to 122-D is supplied to the LED drivers 121-1 to 121-D corresponding to the LED arrays 122-1 to 122-D, respectively. The image data supplied to the LED drivers 121-1 to 121-D are, for example, data representing the light emission intensity of each LED 141.

The LED drivers 121-1 to 121-D of the respective modules 203-1 to 203-L control the light emission of the respective LED arrays 122-1 to 122-D based on the image data supplied from the signal processing substrate 251, respectively.

Scanning control of LED array

Fig. 6 is a diagram illustrating the configuration of one LED array 122 (driver coverage 204). The LED array 122 in fig. 6 is an enlarged view of the LED array 122 shown in fig. 5 (D), and portions corresponding to the LED array 122 shown in fig. 5 (D) are denoted by the same reference numerals, and detailed description thereof is omitted.

In fig. 6, the LED array 122 (driver coverage 204) arranges a plurality of pixels of RGB LEDs 141R, LED G and 141B in the line direction (left-right direction) and the scanning direction (up-down direction), and RGB constitutes one pixel. Assuming that the LEDs 141R, LED G and 141B of the same pixel are arranged on the same line, the LED array 122 has the LEDs 141 of the number of channels (CH number) three times the number of pixels in the line direction, and the LEDs 141 of the same number of lines (the number of 1 to N lines) as the number of pixels in the scanning direction in the line direction.

The LED driver 121 that controls the light emission of the LED array 122 scans the LED array 122, and controls the on/off of the light emission of each LED141 of the LED array 122. In the scanning of the LED array 122, the LED driver 121 switches the lines to be controlled at predetermined intervals (at every line control time) in order from the first line to the nth line, for example. The LED driver 121 controls the light emission time of the LED141 of each channel of the line to be controlled based on the video data supplied from the signal processing unit 112. Specifically, the control of the light emission time refers to the control of the ratio of the time to turn on the light emission to the time to turn off the light emission between the on-line control times. Each LED driver 121 repeats such scanning of the LED array 122 a plurality of times between one frame period, which is a time interval for updating the image data supplied to the LED driver 121.

< Conventional scan control >

Fig. 7 is a diagram describing conventional scanning control of the LED array 122 by the LED driver 121. In the upper diagram of fig. 7, the horizontal axis represents time. When the frame rate of the image data supplied to the video wall controller 32 is 60FPS, the image data supplied from the signal processing section 112 (see fig. 2) to the LED driver 121 is updated every 1/60 second, the update time point is 60Hz, and the period (one frame period) thereof is 1/60 second. The period of 60Hz shown on the horizontal axis represents the time length (1/60 second) of the amount of one frame period. In the normal scanning state, the LED driver 121 repeats the scanning of the LED array 122 a plurality of times during one frame period (1/60 second) from the start of updating the video data from the signal processing section 112 to the next update. The LED driver 121 controls the light emission time of each LED141 of the line to be controlled (the light emission time of each LED141 in the line control time) at each scanning. Thus, the LED array 122 is controlled such that the light emission intensity of each LED141 between one frame period becomes the light emission intensity corresponding to the video data supplied to the LED driver 121.

In the lower diagram of fig. 7, the partitions of the respective driver coverage areas 204 (the respective LED arrays 122) in a part of the screen of the wall 201 are shown, and the scanning directions (scanning orientations) of the LED arrays 122 by the LED drivers 121 in the respective driver coverage areas 204 are shown by arrows. According to this, the substrate on which the LED array 122 (and the LED driver 121) is mounted is arranged such that the line direction is the up-down direction and the scanning direction is the left-right direction. The leftward arrow shown by the partition of each driver coverage area 204 (each LED array 122) indicates that the scanning direction is leftward when the LED driver 121 controlling the LED array 122 of each driver coverage area 204 performs the conventional scanning control. The conventional scan control is control for sequentially switching the lines to be controlled from the first line to the nth line (N is the number of lines) of the LED array 122, and the scanning direction is the direction in which the lines to be controlled are switched. In this way, when the scanning orientation of all driver coverage areas 204 (each LED array 122) is uniform and scanned synchronously, a technical problem as described in fig. 8 may arise.

In the present specification, the scanning direction refers to a direction in which the plurality of lines of the LED array 122 are arranged, and indicates a direction perpendicular to the line direction. One scanning direction includes two opposite orientations. For example, the case where the scanning direction is the up-down direction includes the up-down and up-down cases. The case where the scanning direction is the left-right direction includes the case of left and right. The scanning direction indicates the direction in which the line to be controlled is switched with respect to the multiple lines of the LED array 122. For example, in the LED array 122 in which the line direction is the up-down direction, when the line to be controlled is sequentially switched from the line at the upper end to the line at the lower end, the scanning direction is downward. When the line to be controlled is sequentially switched from the lower line to the upper line, the scanning direction is upward. Thus, in the LED arrays 122 whose line directions are the same, there are two scanning orientations opposite to each other. Even the LED arrays 122 having the same scanning direction may have different scanning directions. In the LED arrays 122 whose scanning directions are different, their scanning orientations are different. In the scanning control of the LED array 122, there is no scanning direction except for the case where the lines to be controlled are sequentially switched from the line at one end to the line at the other end. In the present specification, when referring to the direction of scanning, it means the scanning direction and the direction in the scanning direction, for example, when referring to the direction of scanning to be different, it means any one of the case where the scanning direction is different and the case where the scanning direction is the same and the direction in the scanning direction is different.

Technical problem of conventional scan control

Fig. 8 is a diagram describing a technical problem of conventional scan control. A in fig. 8 is an example of video content supplied to the video wall controller 32. The image of a in fig. 8 includes an image of a person moving in the same direction as the scanning direction of each driver coverage area 204 (each LED array 122). In contrast, B in fig. 8 is an example of the video content a in fig. 8 supplied to the video wall controller 32 when the video is displayed on the screen of the video wall 33, that is, on the wall 201. In the image B of fig. 8, streaks (scan streaks) are generated in the image of the person moving upward in the same direction as the scanning direction of each driver coverage 204 (each LED array 122). In this way, if an image or the like of an object moving in the same direction with respect to the scanning direction of each driver coverage area 204 (each LED array 122) is included in the image, scan streaks may occur in these images when the image is displayed on the wall 201. Likewise, if a viewer viewing an image displayed on the wall 201 moves the neck or eyes in the same orientation relative to the scan, then the scan fringes may be seen. The reason for this is that, since the scanning directions of the driver coverage areas 204 (the LED arrays 122) in the screen of the wall 201 are identical, when an image moving in the same direction as the scanning directions is included in the image, or when the line of sight of the viewer moves in the same direction as the scanning directions, the scanning of all the driver coverage areas 204 (the LED arrays 122) may be synchronized with the movement of the moving image or the line of sight of the viewer.

In the present technique, the orientation and the like of the scanning of each driver coverage area 204 (LED array 122) are not matched with the peripheral portion so that the scanning of each driver coverage area 204 (LED array 122) is not synchronized with the movement of the moving image or line of sight in a wide continuous area on the screen of the wall 201.

Setting of scanning of driver coverage area 204 (LED array 122)

Fig. 9 is a block diagram showing a configuration example for setting scanning of each driver coverage area 204 (122 array 122) in the wall 201. In fig. 9, the LED drivers 121-1 to 121-D and the LED arrays 122-1 to 122-D of the modules 203 represent a plurality of LED drivers 121 and a plurality of LED arrays 122 mounted on a substrate corresponding to any one of the plurality of modules 203 constituting the cabinet 202. The cabinet 202 (display unit 51) represents one cabinet 202 including the module 203 in the figure among the plurality of cabinets 202 (display unit 51) constituting the wall 201. The setting of the scanning-related information such as the scanning direction of the respective LED arrays 122-1 to 122-D and the order of the lines to be controlled during scanning can be performed by setting control data for the LED drivers 121-1 to 121-D that control the LED arrays 122-1 to 122-D, respectively.

In setting control data for the LED drivers 121-1 to 121-D, when the video wall controller 32 has a CPU (Central Processing Unit ) 301, the CPU301 generates control data for the respective LED drivers 121-1 to 121-D. The CPU301 may be the MPU76 in fig. 2, and the CPU301 may acquire control data from the PC30 in fig. 1, for example. The CPU301 transmits the generated control data to the IF substrate 321 of the display unit 51 (cabinet 202) connected via the control bus. The IF substrate 321 transmits control data for the respective LED drivers 121-1 to 121-D transmitted from the CPU301 of the video wall controller 32 to the LED drivers 121-1 to 121-D connected through the control bus. Thus, control data related to scanning is set in each of the LED drivers 121-1 to 121-D, and each of the LED drivers 121-1 to 121-D controls scanning of each of the LED arrays 122-1 to 122-D in accordance with the set control data. When the scanning direction of the LED array 122 cannot be changed in setting the control data of the LED driver 121, the scanning direction of the LED array 122 can be set or changed at the time of manufacture or the like, depending on the orientation of the wiring pattern on the substrate on which the LED array 122 is mounted (the arrangement direction of the LEDs 141 connected to the same row selection wiring), or depending on the direction in which the substrate on which the LED array 122 is mounted is provided to the cabinet 202.

First mode of scanning control of LED array

Fig. 10 is a diagram describing a first mode of scanning control of the LED array 122. In fig. 10, the area of each driver coverage 204 (each LED array 122) in the screen of the wall 201 and the orientation of the scanning performed by the LED driver 121 on each driver coverage 204 (each LED array 122) are illustrated within the range of a part of the wall 201.

According to this, the orientations of the scans are the upward, downward, leftward, and rightward driver coverage areas 204 coexist, and the scans are performed in such a manner that the orientations of the scans of the driver coverage areas 204 adjacent to each other obliquely at least up and down, left and right are different, that is, the orientations of the scans of the surrounding driver coverage areas 204 are different with respect to the orientations of the scans of the respective driver coverage areas 204. Thus, when a moving image is displayed on the screen of the wall 201, the scanning of each driver coverage area 204 (LED array 122) is synchronized with the moving image in a continuous area over a wide range, and the generation of scanning streaks is suppressed. Likewise, generation of the scanning streaks due to synchronization of scanning with movement of the line of sight of the viewer is also suppressed, but the case of suppressing the generation of the scanning streaks due to movement of the line of sight of the viewer will be omitted below.

In the general display unit 51, the scanning direction of each driver coverage area 204 is uniform in the horizontal direction or the vertical direction, and the scanning direction may not be changed during setting of the control data of the LED driver 121. In this case, as described above, with respect to the general display unit 51, the scanning direction of each driver coverage area 204 can be made to exist in a mixture of the up-down direction and the left-right direction by partially changing the orientation of the wiring pattern on the substrate on which the LED array 122 is mounted (the arrangement direction of the LEDs 141 connected to the same row selection wiring), or providing the cabinet 202 with the direction of the substrate on which the LED array 122 is mounted.

The partition of each driver coverage area 204 (each LED array 122) shown in fig. 10 may represent a partition of the module 203, and the orientation of the scan of all driver coverage areas 204 (LED arrays 122) included in the same module 203 may be the orientation shown by the arrow.

Second mode of scanning control of LED array

Fig. 11 is a diagram describing a second mode of scanning control of the LED array 122. In fig. 11, the area of each driver coverage 204 (each LED array 122) in the screen of the wall 201 and the orientation of the scanning performed by the LED driver 121 on each driver coverage 204 (each LED array 122) are illustrated within the range of a part of the wall 201.

According to this, the scanning directions of all the driver coverage areas 204 are unified as the left-right directions, and the scanning directions exist in a mixture of left and right directions. The scanning is performed such that the directions of the scans of the driver coverage areas 204 adjacent to each other at least up and down and left and right are different, that is, such that the directions of the scans of the driver coverage areas 204 juxtaposed in the left and right directions are different from each other, and such that the directions of the scans of the driver coverage areas 204 juxtaposed in the up and down directions are different from each other. Thus, when a moving image is displayed on the screen of the wall 201, the scanning of each driver coverage area 204 (LED array 122) is synchronized with the moving image in a continuous area over a wide range, and the generation of scanning streaks is suppressed.

In fig. 11, the left arrow may be changed to the upward arrow, and the right arrow may be changed to the downward arrow, so that the scanning directions of the respective driver coverage areas 204 are mixed up and down.

The partition of each driver coverage area 204 (each LED array 122) shown in fig. 11 may represent a partition of the module 203, and the orientation of the scan of all driver coverage areas 204 (LED arrays 122) included in the same module 203 may be the orientation shown by the arrow.

Third mode of scanning control of LED array

Fig. 12 is a diagram describing a third mode of scanning control of the LED array 122. In fig. 12, the area of each driver coverage area 204 (each LED array 122) in the screen of the wall 201 and the orientation of the scanning performed by the LED driver 121 on each driver coverage area 204 (each LED array 122) are illustrated within the range of a part of the wall 201. The a-frame and the B-frame of fig. 12 represent that the direction of scanning is alternately switched from the a-frame to the B-frame or from the B-frame to the a-frame at a predetermined period. The period for switching between the a frame and the B frame may be one frame period (e.g., 1/60 second) or longer or shorter than the period.

According to this, in the same manner as in the second embodiment of fig. 11, the scanning direction is uniform in all the driver coverage areas 204, and the scanning directions are mixed in the left and right directions regardless of the a frame or the B frame. The scanning is performed such that at least the directions of the scans of the driver coverage areas 204 adjacent to each other up and down and left and right are different, that is, such that the directions of the scans of the driver coverage areas 204 juxtaposed in the left and right directions are different from each other and the directions of the scans of the driver coverage areas 204 juxtaposed in the up and down directions are different from each other to the left and right.

When switching from a frame to B frame or vice versa, the orientation of the scan of each driver coverage area 204 is reversed. Thus, when a moving image is displayed on the screen of the wall 201, the second method further reduces scanning of each driver coverage area 204 (LED array 122) in a continuous area over a wide range as compared with the case where the moving image is synchronized, and generation of scanning streaks is suppressed.

In fig. 12, the left arrow may be changed to the upward arrow, and the right arrow may be changed to the downward arrow, so that the scanning directions of the respective driver coverage areas 204 are mixed up and down.

The partition of each driver coverage area 204 (each LED array 122) shown in fig. 12 may represent a partition of the module 203, and the orientation of the scan of all driver coverage areas 204 (LED arrays 122) included in the same module 203 may be the orientation shown by the arrow.

Fourth aspect of scanning control of LED array

Fig. 13 is a diagram describing a fourth mode of scanning control of the LED array 122. The a to E tables (data) of fig. 13 show the order of lines as control targets when they scan when focusing on one driver coverage area 204 (LED array 122). The order of the lines (referred to as light-emitting lines) as control targets is switched every predetermined time as in the a to E tables of fig. 13. The time interval for switching the order of the light emitting lines may be, for example, one frame period or other time intervals.

In the table a of fig. 13, the light emitting lines are switched in the order of the first line, the second line, the third line, the fourth line, and the fifth line in accordance with the line numbers shown in the order from the table. The number of lines of the LED array 122 is 5, and line numbers 1 to 5 are given in order from the line at the end (the uppermost line). After a predetermined time has elapsed, as shown in table B of fig. 13, the light emitting line is switched to the order of the fifth line, the fourth line, the third line, the second line, and the first line. Thus, the LED driver 121 switches the order of the lines as the control targets at the time of scanning to the order shown in the tables a to E of fig. 13 every time a predetermined time elapses. After switching to the order shown in the E table of fig. 13, the LED driver 121 may further switch to the order shown in other tables, or may repeatedly switch to the order shown in the a to E tables of fig. 13. Such a table (data) for determining the order of the light-emitting lines is individually set for each LED driver 121 (each driver coverage area 204), and the order of the light-emitting lines shown in each table (data) is randomly determined.

Accordingly, the scanning is performed such that the order of the light emission lines at the time of scanning of each driver coverage area 204 (each LED array 122) is different from the surrounding area, and also different in time. Thus, when a moving image is displayed on the screen of the wall 201, the scanning of each driver coverage area 204 (LED array 122) is synchronized with the moving image in a continuous area over a wide range, and the generation of scanning streaks is suppressed.

In the fourth embodiment, the scanning direction of each driver coverage area 204 (each LED array 122) may be only the left-right direction, only the up-down direction, or both the left-right direction and the up-down direction. The order of the light emitting lines may be set not for each LED driver 121 (each driver coverage area 204) but for each module 203.

Application example of the second to fourth modes of scanning control of LED array

Next, a second to fourth aspects of the scanning control of the LED array 122 will be described, taking as an example a case where the present invention is applied to a wall 201 configured by the following modules 203. Fig. 14 is a diagram showing an exemplary configuration of any one module 203 among the plurality of modules 203 constituting the wall 201 (cabinet 202). The module 203 of fig. 14 includes four drive coverage areas 204-1 through 204-4. The partition of one driver coverage 204 is constituted by one LED array 122 and is scan-controlled by one LED driver 121, and thus the driver coverage 204-1 to 204-4 is an area that is scan-controlled by four LED drivers 121. In addition, these four LED drivers 121 are identified as drivers 1 through 4, and driver coverage areas 204-1 through 204-4 are also referred to as the area of driver 1, the area of driver 2, the area of driver 3, and the area of driver 4, respectively.

In fig. 14, the LED array 122 arranged in the region of each of the drivers 1 to 4 has 5 lines in which the vertical direction is the line direction, and the horizontal direction is the scanning direction. The lines at the left end of the 5 lines are marked with line numbers 1 to 5 in order from the line at the left end, for example, the line with line number n is called n line or n-th line.

Application example of conventional scan control

Fig. 15 is a diagram describing a case where conventional scan control is applied to the module 203 of fig. 14. A to F of fig. 15 show the positions of the light-emitting lines in the areas (driver coverage areas 204-1 to 204-4) of the respective drivers 1 to 4 of the module 203 in the conventional scan control every line control time. The light-emitting line is indicated by a line hatched with oblique lines.

When scanning is started, as shown in a of fig. 15, the light-emitting line in the area of each driver 1 to 4 (driver coverage area 204-1 to 204-4) is the first line at the left end. When the light emitting lines are switched over by the line control time, as shown in B of fig. 15, the light emitting lines in the areas (driver coverage areas 204-1 to 204-4) of the respective drivers 1 to 4 become second lines. Further, when the light emitting lines are switched over by the line control time, as shown in C of fig. 15, the light emitting lines in the areas (driver coverage areas 204-1 to 204-4) of the respective drivers 1 to 4 become third lines. Further, when the light emitting lines are switched over by the line control time, as shown in D of fig. 15, the light emitting lines in the areas (driver coverage areas 204-1 to 204-4) of the respective drivers 1 to 4 become fourth lines. Further, when the light emitting lines are switched over by the line control time, as shown in E of fig. 15, the light emitting lines in the areas (driver coverage areas 204-1 to 204-4) of the respective drivers 1 to 4 become fifth lines. Further, when the line control time elapses to shift to the next scan, as shown in F of fig. 15, the light emitting lines in the areas (driver coverage areas 204-1 to 204-4) of the respective drivers 1 to 4 return to the first line.

According to this, in the conventional scan control, the directions of the scans in the areas (the driver coverage areas 204-1 to 204-4) of the respective drivers 1 to 4 of the module 203 are all the same rightward, so that the areas where the images moving rightward are synchronized with the scans are large, and the possibility of generating the scan streaks is high.

Application example of the second or third mode of scanning control

Fig. 16 is a diagram describing a case of applying the second mode or the third mode of the scan control to the module 230 of fig. 14. A to F of fig. 16 show the positions of the light-emitting lines in the areas (driver coverage areas 204-1 and 204-4) of the respective drivers 1 to 4 of the module 203 in the second mode or the third mode of the scan control (at the time of the state of the a frame of fig. 12) every line control time. The light-emitting line is indicated by a line hatched with oblique lines.

When scanning is started, as shown in a of fig. 16, the light-emitting lines in the areas of the drivers 1 and 4 (driver coverage areas 204-1 and 204-4) are the first lines at the left end. The light-emitting lines in the areas of drivers 2 and 3 (driver coverage areas 204-2 and 204-3) are the fifth line at the right end.

When the light emitting lines are switched over by the line control time, as shown in B of fig. 16, the light emitting lines in the areas of the drivers 1 and 4 (the driver coverage areas 204-1 and 204-4) become the second lines. The light emitting lines in the areas of the drivers 2 and 3 (driver coverage areas 204-2 and 204-3) become fourth lines.

Further, when the light emitting lines are switched over by the line control time, as shown in C of fig. 16, the light emitting lines in the areas of the drivers 1 and 4 (the driver coverage areas 204-1 and 204-4) become third lines. The light emitting lines in the areas of the drivers 2 and 3 (driver coverage areas 204-2 and 204-3) become third lines.

Further, when the light emitting lines are switched over by the line control time, as shown in D of fig. 16, the light emitting lines in the areas of the drivers 1 and 4 (the driver coverage areas 204-1 and 204-4) become fourth lines. The light emitting lines in the areas of the drivers 2 and 3 (driver coverage areas 204-2 and 204-3) become the second lines.

Further, when the light emitting lines are switched over by the line control time, as shown in E of fig. 16, the light emitting lines in the areas of the drivers 1 and 4 (the driver coverage areas 204-1 and 204-4) become fifth lines. The light emitting lines in the areas of the drivers 2 and 3 (driver coverage areas 204-2 and 204-3) become the first lines.

Further, when the line control time passes to shift to the next scan, as shown in F of fig. 16, the light emitting lines in the areas of the drivers 1 and 4 (the driver coverage areas 204-1 and 204-4) return to the first line at the left end. The light emitting lines in the areas of drivers 2 and 3 (driver coverage areas 204-2 and 204-3) return to the fifth line at the right end.

According to this, in the conventional scan control, the directions of the scans in the areas (the driver coverage areas 204-1 to 204-4) of the respective drivers 1 to 4 of the module 203 are divided into right and left, and thus the area where the image moving right or left and the scan may be synchronized becomes half that in the conventional scan control, the generation of the scan streaks is suppressed.

Even when the scanning direction in the area (the driver coverage area 204-1 to 204-4) of each driver 1 to 4 of the module 203 is the up-down direction, the generation of the scanning streaks is suppressed by applying the second or third mode of the scanning control as in the case of fig. 16.

Application example of fourth mode of scanning control

Fig. 17 is a diagram describing a case of applying the fourth mode of scan control to the module 203 of fig. 14. A to F of fig. 17 show the positions of the light-emitting lines in the areas (driver coverage areas 204-1 to 204-4) of the respective drivers 1 to 4 of the module 203 in the fourth aspect of the scan control every line control time. The light-emitting line is indicated by a line hatched with oblique lines.

When scanning is started, as shown in a of fig. 17, the light-emitting line in the area of the driver 1 (driver coverage 204-1) is the first line at the left end. The light-emitting line in the area of the driver 2 (driver coverage 204-2) is a fourth line. The light-emitting line in the area of the driver 3 (driver coverage 204-3) is a third line. The light-emitting line in the area of the driver 4 (driver coverage 204-4) is the fifth line at the right end.

When the light emitting line is switched by the line control time, as shown in B of fig. 17, the light emitting line in the area of the driver 1 (driver coverage 204-1) becomes the second line. The light emitting line in the area of the driver 2 (driver coverage 204-2) becomes the first line. The light emitting line in the area of the driver 3 (driver coverage 204-3) becomes the first line. The light emitting line in the area of the driver 4 (driver coverage 204-4) becomes the third line.

Further, when the light emitting line is switched by the line control time, as shown in C of fig. 17, the light emitting line in the area of the driver 1 (driver coverage 204-1) becomes the third line. The light emitting line in the area of the driver 2 (driver coverage 204-2) becomes the fifth line. The light emitting line in the area of the driver 3 (driver coverage 204-3) becomes the fourth line. The light emitting line in the area of the driver 4 (driver coverage 204-4) becomes the first line.

Further, when the light emitting line is switched over by the line control time, as shown in D of fig. 17, the light emitting line in the area of the driver 1 (driver coverage 204-1) becomes the fourth line. The light emitting line in the area of the driver 2 (driver coverage 204-2) becomes the second line. The light emitting line in the area of the driver 3 (driver coverage 204-3) becomes the second line. The light emitting line in the area of the driver 4 (driver coverage 204-4) becomes the fourth line.

Further, when the light emitting line is switched over by the line control time, as shown in E of fig. 17, the light emitting line in the area of the driver 1 (driver coverage 204-1) becomes the fifth line. The light emitting line in the area of the driver 2 (driver coverage 204-2) becomes the third line. The light emitting line in the area of the driver 3 (driver coverage 204-3) becomes the fifth line. The light emitting line in the area of the driver 4 (driver coverage 204-4) becomes the second line.

Further, when the line control time elapses to shift to the next scan, as shown in F of fig. 17, the light emitting line in the area of the driver 1 (driver coverage 204-1) returns to the first line at the left end. The light emitting lines in the area of the driver 2 (driver coverage 204-2) return to the fourth line. The light emitting lines in the area of the driver 3 (driver coverage 204-3) return to the third line. The light emitting line in the area of the driver 4 (driver coverage 204-4) returns to the fifth line at the right end. When data indicating the order of the light emitting lines is switched, the position of the light emitting line in F of fig. 17 is different from the position of the light emitting line in a of fig. 17.

According to this, in the conventional scan control, the orientations of the scans in the areas (the driver coverage areas 204-1 to 204-4) of the respective drivers 1 to 4 of the module 203 are also randomly changed during one scan, respectively, so that there is no area where the moving image and the scan may be synchronized, suppressing the generation of scan streaks.

Switching process of scanning orientation in the third mode of scanning control

Fig. 18 is a flowchart illustrating a processing procedure concerning the switching of the orientation of scanning when the third mode of scanning control is applied to the module 203 of fig. 14. In this flowchart, the scanning direction of the area (the driver coverage areas 204-1 to 204-4) of each driver 1 to 4 of the module 203 of fig. 14 is set to be the up-down direction. In addition, in the description of the present flowchart, attention is paid to only one module 203.

In step S1, the CPU301 of the video wall controller 32 of fig. 9 transmits control data to the respective drivers 1 to 4 of the module 203 to perform initial scan setting. Thus, initial settings related to scan control, such as the direction of scanning in the region of each driver 1 to 4, the number of repetitions of scanning between one frame period, and the like, are performed. The process proceeds from step S1 to step S2.

In step S2, the CPU301 determines whether or not the image displayed on the wall 201 is in the vertical blanking time. When negative in step S2, the process repeats step S2. When affirmative in step S2, the process advances to step S3.

In step S3, the CPU301 increments the value of the counter by 1. The value of the counter is 0 or 1, and when the value of the counter is 1, the value becomes 0 after adding 1. The process advances to step S4.

In step S4, the CPU301 transmits control data to the drivers 1 to 4 of the module 203, and performs scan setting according to the value of the counter. In the scan setting, the CPU301 refers to data of a scan direction setting table as in fig. 19, for example. The orientation of the scan set for each driver 1 to 4 is shown for the value (0 or 1) of the counter in the data of the scan direction setting table. The CPU301 acquires the orientation of the scan of each of the drivers 1 to 4 corresponding to the value of the counter from the data of the scan direction setting table, and sets the acquired orientation of the scan for each of the drivers 1 to 4. Thus, the scanning direction of the area of each driver 1 to 4 is changed to the direction indicated by the data of the scanning direction setting table according to the value of the counter. The process returns from step S4 to step S2, and steps S2 to S4 are repeated. Thus, the value of the counter is changed for each frame period, and thus the scanning direction of the area of each driver 1 to 4 is changed for each frame period. Fig. 20 shows the scanning direction of the area of each driver 1 to 4 when the scanning direction is changed according to the data of the scanning direction setting table of fig. 19. When the value of the counter is 0, the orientation of the scanning of the areas of the drivers 1 and 4 becomes upward, and the orientation of the scanning of the areas of the drivers 2 and 3 becomes downward. When the value of the counter is 1, the orientation of the scanning of the areas of the drivers 1 and 4 becomes downward, and the orientation of the scanning of the areas of the drivers 2 and 3 becomes upward. The value of the counter is alternately switched between 0 and 1 in one frame period, and thus the scanning direction of the area of each driver 1 to 4 is reversed in one frame period.

The switching process of the order of the light emitting lines in the fourth aspect of the scanning control

Fig. 21 is a flowchart illustrating a processing procedure concerning sequential switching of light emitting lines when the fourth mode of scan control is applied to the module 203 of fig. 14. In the description of the present flowchart, attention is paid to only one module 203.

In step S11, the CPU301 of the video wall controller 32 of fig. 9 transmits control data to the respective drivers 1 to 4 of the module 203 to perform initial scan setting. Thus, the order of the light emitting lines at the time of scanning in the area of each driver 1 to 4, the number of repetitions of scanning during one frame period, and the like are initially set in relation to the scanning control. The process proceeds from step S11 to step S12.

In step S12, the CPU301 determines whether or not the image displayed on the wall 201 is in the horizontal blanking time. When negative in step S12, the process repeats step S12. When affirmative in step S12, the process advances to step S13.

In step S13, the CPU301 increments the value of the counter by 1. The counter has a value of 0 to 3, and when the counter has a value of 3, the value becomes 0 after adding 1. The process advances to step S14.

In step S14, the CPU301 transmits control data to the drivers 1 to 4 of the module 203, and performs scan setting according to the value of the counter. In the scan setting, the CPU301 refers to data of a scan order (light emission line order) setting table as in fig. 22, for example. The order of the light emitting lines set for the respective drivers 1 to 4 is shown for the value (0, 1, 2, or 3) of the counter in the data of the scan order setting table. The CPU301 acquires the order of the light-emitting lines of the respective drivers 1 to 4 corresponding to the value of the counter from the data of the scan order setting table, and sets the acquired order of the light-emitting lines for the respective drivers 1 to 4. Thus, at the time of area scanning by each of the drivers 1 to 4, the order of the light emitting lines is changed to the order indicated by the data of the scanning order setting table according to the value of the counter. The process returns from step S14 to step S12, and steps S12 to S14 are repeated. Thus, the value of the counter is changed for each horizontal scanning period of the displayed image, and thus the order of the light-emitting lines of the areas of the respective drivers 1 to 4 is changed for each horizontal scanning period.

The present technique may be constructed as follows.

(1) An information processing system, comprising:

a display unit; and

A plurality of drivers provided corresponding to each of a plurality of partitions dividing the display section, the plurality of drivers driving pixels included in the partition by switching the pixels to be driven by switching the line to be scanned among a plurality of lines,

The plurality of drivers includes drivers that differ in any of the orientations of the scans and the orders of the lines in which the scans are performed.

(2) The information processing system according to (1), wherein,

The orientation of the scanning of the driver is set according to a wiring connected to the pixel.

(3) The information processing system according to (1), wherein,

The scanning direction of the driver is set according to the arrangement direction of the substrate on which the driver and the pixels are mounted with respect to the display section at the time of manufacture.

(4) The information processing system according to any one of (1) to (3), wherein,

The orientation of the scanning of the driver or the order of the lines in which the scanning is performed is set according to data supplied to the driver.

(5) The information processing system according to any one of (1) to (4), wherein,

The orientations of the scans of the drivers corresponding to the partitions adjacent to each other are different.

(6) The information processing system according to any one of (1) to (5), wherein,

The orientations of the scans of the drivers corresponding to the partitions adjacent to each other are opposite orientations.

(7) The information processing system according to any one of (1) to (6), wherein,

The driver changes the scanning direction every predetermined time.

(8) The information processing system according to any one of (1) to (4), wherein,

The driver randomly sets the order of the lines in which the scans are performed.

(9) The information processing system according to any one of (1) to (4) and (8), wherein,

The driver changes the order of the lines to be scanned every predetermined time.

(10) The information processing system according to any one of (1) to (9), wherein,

The display part is composed of a plurality of detachable cabinets.

(11) The information processing system according to (10), wherein,

The cabinet is composed of a plurality of modules which can be separated in units of a substrate on which a plurality of pixels are mounted in an aligned manner.

(12) The information processing system according to (11), wherein,

The partition is a partition of each of the modules,

A corresponding plurality of the drivers is provided for each of the partitions.

(13) The information processing system according to (12), wherein,

Among the plurality of drivers, the scan of the driver corresponding to the same partition is oriented the same.

(14) The information processing system according to any one of (11) to (13), wherein,

The pixels are provided as light-emitting elements,

The module is constituted by a plurality of light emitting element arrays driven by a plurality of drivers.

(15) The information processing system according to (14), wherein,

The partition is a partition of each of the light emitting element arrays.

(16) The information processing system according to any one of (10) to (15), which is provided with a controller that acquires an image displayed on the display portion, divides the image displayed on each of the plurality of cabinets, and supplies the divided image to each of the plurality of cabinets.

(17) The information processing system according to (16), wherein,

The controller supplies data for setting an orientation of the scanning by the driver or an order of the lines for performing the scanning to the driver.

(18) The information processing system according to any one of (1) to (17), wherein,

The display unit is configured by arranging a plurality of light emitting element arrays each of which is configured by a plurality of light emitting elements that emit light for each pixel,

The driver drives the light emitting element array by a passive matrix driving manner.

(19) An information processing method of an information processing system, the information processing system having:

a display unit; and

A plurality of the drivers of the plurality of the drivers,

The plurality of drivers are provided corresponding to each of a plurality of partitions dividing the display section, the plurality of drivers drive pixels included in the partitions by switching the pixels to be driven by switching the line to be scanned among a plurality of lines,

The plurality of drivers drive pixels included in the partition in a manner different from any one of an orientation of the scanning and an order of the lines in which the scanning is performed.

(20) The information processing method according to (19), wherein,

The drivers corresponding to the partitions adjacent to each other make the scanning direction opposite.

[ Reference numerals description ]

11: A display system; 31: a video server; 32: a video wall controller; 33: a video wall; 51: a display unit; 78: a signal processing section; 80: a signal distribution unit; 91: a driver control unit; 92: an LED block; 112: a signal processing section; 121: an LED driver; 141: an LED;201: a wall; 202: a cabinet; 203: a module; 204: drive coverage; 251: a signal processing substrate; 301: a CPU;321: an IF substrate.

Claims (20)

1. An information processing system, comprising:

a display unit; and

A plurality of drivers provided corresponding to each of a plurality of partitions dividing the display section, the plurality of drivers driving pixels included in the partition by switching the pixels to be driven by switching the line to be scanned among a plurality of lines,

The plurality of drivers includes drivers that differ in any of the orientations of the scans and the orders of the lines in which the scans are performed.

2. The information handling system of claim 1, wherein,

The orientation of the scanning of the driver is set according to a wiring connected to the pixel.

3. The information handling system of claim 1, wherein,

The scanning direction of the driver is set according to the arrangement direction of the substrate on which the driver and the pixels are mounted with respect to the display section at the time of manufacture.

4. The information handling system of claim 1, wherein,

The orientation of the scanning of the driver or the order of the lines in which the scanning is performed is set according to data supplied to the driver.

5. The information handling system of claim 1, wherein,

The orientations of the scans of the drivers corresponding to the partitions adjacent to each other are different.

6. The information handling system of claim 1, wherein,

The orientations of the scans of the drivers corresponding to the partitions adjacent to each other are opposite orientations.

7. The information handling system of claim 1, wherein,

The driver changes the scanning direction according to the time lapse.

8. The information handling system of claim 1, wherein,

The driver randomly sets the order of the lines in which the scans are performed.

9. The information handling system of claim 1, wherein,

The driver changes the order of the lines for the scanning according to the time lapse.

10. The information handling system of claim 1, wherein,

The display part is composed of a plurality of detachable cabinets.

11. The information handling system of claim 10, wherein,

The cabinet is composed of a plurality of modules which can be separated in units of a substrate on which a plurality of pixels are mounted in an aligned manner.

12. The information handling system of claim 11, wherein,

The partition is a partition according to the module,

A corresponding plurality of the drivers is provided for each of the partitions.

13. The information handling system of claim 12, wherein,

Among the plurality of drivers, the scan of the driver corresponding to the same partition is oriented the same.

14. The information handling system of claim 11, wherein,

The pixels are provided as light-emitting elements,

The module is constituted by a plurality of light emitting element arrays driven by a plurality of drivers.

15. The information handling system of claim 14, wherein,

The partition is a partition according to the light emitting element array.

16. The information handling system of claim 10, wherein,

The information processing system includes a controller that acquires an image displayed on the display unit, divides the image displayed on each of the plurality of cabinets, and supplies the divided image to each of the plurality of cabinets.

17. The information handling system of claim 16, wherein,

The controller supplies data for setting an orientation of the scanning by the driver or an order of the lines for performing the scanning to the driver.

18. The information handling system of claim 1, wherein,

The display unit is configured by arranging a plurality of light emitting element arrays each of which is configured by a plurality of light emitting elements that emit light for each pixel,

The driver drives the light emitting element array by a passive matrix driving manner.

19. An information processing method of an information processing system, the information processing system having:

a display unit; and

A plurality of the drivers of the plurality of the drivers,

The plurality of drivers are provided corresponding to each of a plurality of partitions dividing the display section, the plurality of drivers drive pixels included in the partitions by switching the pixels to be driven by switching the line to be scanned among a plurality of lines,

The plurality of drivers drive pixels included in the partition in a manner different from any one of an orientation of the scanning and an order of the lines in which the scanning is performed.

20. The information processing method according to claim 19, wherein,

The drivers corresponding to the partitions adjacent to each other make the scanning direction opposite.