WO2019192878A1 - A multiple screen display system with enhanced remote control efficiency - Google Patents

A multiple screen display system with enhanced remote control efficiency Download PDF

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Publication number
WO2019192878A1
WO2019192878A1 PCT/EP2019/057545 EP2019057545W WO2019192878A1 WO 2019192878 A1 WO2019192878 A1 WO 2019192878A1 EP 2019057545 W EP2019057545 W EP 2019057545W WO 2019192878 A1 WO2019192878 A1 WO 2019192878A1
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WO
WIPO (PCT)
Prior art keywords
hdmi
cec
display devices
control module
multiple screen
Prior art date
Application number
PCT/EP2019/057545
Other languages
French (fr)
Inventor
Tugrul HATIPOGLU
Metin DUMAN
Mumun AKSAKAL
Serkan GULER
Senol AYDIN
Ozcan Ekber OZDEMIR
Original Assignee
Arcelik Anonim Sirketi
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
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Application filed by Arcelik Anonim Sirketi filed Critical Arcelik Anonim Sirketi
Publication of WO2019192878A1 publication Critical patent/WO2019192878A1/en

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Classifications

    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G5/00—Control arrangements or circuits for visual indicators common to cathode-ray tube indicators and other visual indicators
    • G09G5/003—Details of a display terminal, the details relating to the control arrangement of the display terminal and to the interfaces thereto
    • G09G5/006—Details of the interface to the display terminal
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
    • G06F3/14—Digital output to display device ; Cooperation and interconnection of the display device with other functional units
    • G06F3/1423—Digital output to display device ; Cooperation and interconnection of the display device with other functional units controlling a plurality of local displays, e.g. CRT and flat panel display
    • G06F3/1446—Digital output to display device ; Cooperation and interconnection of the display device with other functional units controlling a plurality of local displays, e.g. CRT and flat panel display display composed of modules, e.g. video walls
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
    • H04N21/41—Structure of client; Structure of client peripherals
    • H04N21/4104—Peripherals receiving signals from specially adapted client devices
    • H04N21/4122—Peripherals receiving signals from specially adapted client devices additional display device, e.g. video projector
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
    • H04N21/43—Processing of content or additional data, e.g. demultiplexing additional data from a digital video stream; Elementary client operations, e.g. monitoring of home network or synchronising decoder's clock; Client middleware
    • H04N21/436—Interfacing a local distribution network, e.g. communicating with another STB or one or more peripheral devices inside the home
    • H04N21/4363—Adapting the video or multiplex stream to a specific local network, e.g. a IEEE 1394 or Bluetooth® network
    • H04N21/43632—Adapting the video or multiplex stream to a specific local network, e.g. a IEEE 1394 or Bluetooth® network involving a wired protocol, e.g. IEEE 1394
    • H04N21/43635—HDMI
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2370/00—Aspects of data communication
    • G09G2370/06—Consumer Electronics Control, i.e. control of another device by a display or vice versa
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2370/00—Aspects of data communication
    • G09G2370/12—Use of DVI or HDMI protocol in interfaces along the display data pipeline

Definitions

  • the present invention relates to a method facilitating control by means of infrared communication in a multiple screen display system comprising a plurality of display devices connected to a control module processing source files to be displayed on a plurality of display devices.
  • Display devices display images on their screens, and combining a plurality of display devices so as to form a wide-screen display system called a multiple screen setup or a video wall, is a function achievable by simultaneously using a plurality of separate display devices together.
  • the multiple screen setup term implies generating a single screen image by means of a plurality of display devices, from a combined image transmitted from a single video inlet.
  • Multiple screen display systems may generally have 1x4, 2x2, 3x3, 4x4 or much larger screen arrangements.
  • multiple screen display systems are preferred for being able to obtain a larger screen area by changing their arrangement, and a higher pixel intensity per unit cost, and they are advantageous due to production costs of single screens and enable achieving an extraordinary resolution when they are thus combined.
  • Multiple screen display systems are usually utilized at large, open public spaces such as stadiums. Multiple screen display systems are driven by video graphic cards having a plurality of monitor ports, but complex arrangements require special graphic processors that are able to manage large video walls. However, software based multiple screen controllers use computers and network equipment.
  • a separate cable connection is used for each one of the display devices in the system, enabling data communication with a central computer.
  • Video distribution can be performed by various methods.
  • a central video distribution system is used, and each image to be displayed on a single display device is distributed by said central video distribution system.
  • An image is appropriately split by the central system.
  • the screens thus combined display as a single unit.
  • the positions on the system of the display devices constituting the multiple screen display system need to be identified.
  • controlling from a single point is advantageous.
  • Being able to independently control the display devices is particularly critical in cases when reconfiguration is required in the planned number of display devices on which the image is to be reflected, and in case of a likely malfunction on one of the display devices.
  • Such control can be managed by rearranging the physical connections of the system or by integrating an external control device to the structure. This makes it difficult for a user to control the multiple screen system and requires technical service assistance.
  • HDMI CEC consumer electronics control
  • controlling through HDMI CEC command packets aims to facilitate said control.
  • HDMI CEC is an HDMI feature designed for the users to command the devices connected through HDMI by using a single remote controller.
  • Remote controllers transmit commands by communication between an infrared transmitter and an infrared receiver provided in the target device. For example, this enables using the remote controller of a display device for controlling a set-top box and/or a DVD player.
  • HDMI CEC enables the devices connected by means of display device HDMI ports to bidirectionally communicate with the display device. Said devices may have some control over the display device, and the display devices may have some control over the other devices.
  • the present invention enables activating infrared receivers of display devices by using HDMI CEC addresses and commands for remotely controlling a plurality of display devices in a multiple screen display system.
  • the display devices are essentially arranged in a matrix structure, enabling a main image to be viewed on the entire matrix structure by displaying certain segments of the main image on the screens according to their physical positions.
  • At least one control module is provided, enabling data transfer through an HDMI CEC interface enabling the display devices to be able to communicate with each other in the system.
  • the HDMI CEC interface is available to all devices connected via an HDMI cable and having CEC characteristics.
  • CEC enhanced devices connected via HDMI cable can be controlled by a single remote controller.
  • the devices connected by HDMI cable are controlled by remote controller.
  • the controller is able to send data and commands by means of interaction between a receiver eye capable of infrared data exchange and a signal transmitter.
  • CEC is a bidirectional communication system in which devices send confirmation messages upon receiving commands, thereby enabling availability of devices.
  • the multiple screen display system further comprises an HDMI multiplexer enabling transmitting HDMI data to all display devices, a receiver eye integrated to each display device, adapted to detect a signal from an infrared controller to enable remote communication, and an HDMI transmission line enabling HDMI data transmission between the display devices.
  • An HDMI port is provided on each display device, enabling data from the HDMI multiplexer to be transmitted to a display device.
  • the HDMI data transmitted to a display device through its HDMI port enables command transmission through HDMI CEC data packets as well as sound and video data transmission to said display device. A command sent from a single source is thus transmitted to a plurality of targets.
  • the control module transmits an HDMI CEC command to the display devices for them to send their CEC addresses.
  • the target display device to which the command is transmitted feeds its CEC address data back to the control module.
  • the control module enables making a CEC address identification by using the received CEC addresses.
  • a control mechanism is predetermined to enable the infrared receiver eyes provided on each display device to switch between an active mode in which they are on, and a passive mode in which they are off, by a separate HDMI CEC control code command generated by the control module.
  • the control module enables executing the step of switching the display device receiver eyes to passive mode upon the predefined HDMI CEC control code being entered to all display devices by means of the HDMI multiplexer.
  • This code may be a given sequence of numbers or letters.
  • This predetermined HDMI CEC control code is transmitted to all display devices via the HDMI multiplexer.
  • the infrared receiver on the device is switched to the passive position, inhibiting its operation.
  • the display devices are thus prevented from being controlled individually, enabling effective control of the entire multiple screen display system.
  • the multiple screen display system comprises a control module enabling activating the receiver eye of a related display device upon the CEC address of any display device being entered together with the HDMI CEC control code.
  • HDMI CEC commands can be transmitted to the control module by means of a device with controller function, or the control module activated by a controller may be enabled to generate such command.
  • the control module sends a CEC address transmission command to all display devices, and the position of a related display device on the system is determined by using the CEC address information reaching the control module by the feedback of each display device sent upon receiving said command.
  • the control module reaches the system consisting of all infrared receiver eyes by the predetermined HDMI CEC control command it sends to switch the display device infrared receiver eyes to passive position, switching them off.
  • the receiver eye is activated of only the device at the CEC address to which the command is sent.
  • an HDMI CEC control command is ‘RC01’
  • the CEC address of a display device in the system is ‘VW13’.
  • the control module sends ‘RC01’ command
  • all infrared receiver eyes are switched to passive position.
  • all infrared receiver eyes are switched to passive position excluding that of the display device at the ‘VW13’ CEC address, which is switched to active position.
  • a user is thus enabled to remotely control the positions of the display devices in the multiple screen display system.
  • the multiple screen display system comprises a control module enabling activating the receiver eye of related display devices upon the CEC addresses of a plurality of display devices being entered together with the HDMI CEC control code.
  • an HDMI CEC control command is ‘RC01’
  • the CEC addresses of two separate display devices in the system are ‘VW12’ and ’VW13’.
  • the CEC codes of a plurality of display devices in the system are entered together with the HDMI CEC control command, such as ‘RC01-VW12-VW13’
  • infrared receiver eyes of all display devices in the system are switched to passive state excluding those of the display devices at the ‘VW12’ and ‘VW13’ CEC addresses, which are switch to active position. Controller efficiency is thus enhanced by reaching the control of a plurality of display devices in the multiple screen display system.
  • the multiple screen display system comprises a control module started in a start mode in which all infrared receiver eyes are active.
  • the start mode can be defined as the multiple screen display system being operative upon being connected to a power supply. In this mode, all infrared eyes are in active position when the system is initially started by a user. The infrared receiver eyes being in active position enables transmitting the same command to all display devices by using a single infrared transmitter. The entire multiple screen display system can thus be controlled as a single display device.
  • the multiple screen display system comprises a control module enabling reflecting on the screen a menu allowing selecting display devices by a start command sent by means of an infrared remote controller in the start mode, and executing the related operation by processing the selection made via the menu.
  • a start command sent by means of an infrared remote controller in the start mode infrared receiver eyes of all devices are in active position.
  • the control module determines the CEC address information of the related device and sends the HDMI CEC control command.
  • control module if there are activated display devices by an HDMI CEC control command, an additional step can be executed to reflect an image on the screens by segmenting it between only the display device screens whose infrared receiver eyes are turned on. A user can thus remotely control the multiple screen display system.
  • the multiple screen display system comprises a control module enabling during playing a content, switching the system to start mode upon a user sending a command.
  • an image content is enabled to be displayed on the entire system surface by being segmented on the display device screens in the system.
  • the selection screen can be used of the display device desired to be controlled independently.
  • the system can be switched to the start mode upon a user sending a command with a predetermined code to the control module by means of the controller.
  • the display devices are enabled to be controlled independently when desired.
  • a method for executing by means of the HDMI transmission lines formed to enable transmission HDMI data to all display devices by means of an HDMI multiplexer the steps of: the control module sending an HDMI CEC address transmission command to the display devices; feeding the display device CEC addresses back to the control module; identifying and saving the display device positions by means of the received CEC addresses; associating HDMI CEC commands with the identified addresses and transmitting them directly to a device whose CEC address is known; and activating the infrared receiver eye of the display device whose CEC address is entered.
  • Remote controlling efficiency of the multiple screen display system is thus enhanced, enabling controlling it by means of a single controller.
  • the invention enables realizing a multiple screen display system in which collective or independent remote controllability efficiency of display devices in the system is enhanced, providing ease of use.
  • the multiple screen display system comprises a plurality of display devices having a serial data transmission line in between, transmitting an image or a video signal along the transmission line to an adjacent device, at least one control module enabling data transfer by an HDMI CEC interface allowing the display devices to communicate with each other, an HDMI multiplexer enabling transmitting HDMI data to all of the display devices, a receiver eye integrated to each one of the display devices, adapted to detect a signal from an infrared controller to enable remote communication, and an HDMI transmission line enabling data transmission between the display devices.
  • HDMI CEC is a discrete electric signal, independent of the other HDMI signals coming through the same HMDI transmission line. A CEC signal can be transmitted independent of a high speed HDMI signal.
  • This signal allows deactivating the high speed HDMI circuit of a device in sleep mode, but enables waking it by means of the CEC. Since CEC command is directly connected between all HDMI ports of a device, when HDMI CEC transfer is enabled by a single shared BUS (methods of data transfer between control module components and control units) protocol, the CEC command can pass through a device even when it is (not just resting in sleep mode but) fully turned off. By this, data from a control module can be used to wake up and activate fully turned off display devices.
  • the HDMI multiplexer enabling transmitting the HDMI data to all display devices, enables feeding a command or broadcast data sent to the multiple screen display system, simultaneously to all display devices.
  • the receiver eye adapted to detect a signal from the infrared controller to enable remote communication with the display devices, is integrated on each one of the display devices.
  • a separate receiver eye may be provided in the system for controlling the entire multiple screen display system.
  • An HDMI transmission line is formed in the multiple screen display system, enabling HDMI data transmission between the display devices.
  • HDMI CEC enables bidirectional data transfer.
  • the multiple screen display system of the invention comprises a control module enabling executing the steps of
  • control module is enabled to identify the HDMI data transmission lines.
  • a control code is defined in the control module to control the operational functions of the receiver eyes.
  • the control code can be transmitted through all HDMI data transmission lines to the display devices via HDMI CEC.
  • the command generated by the control module is transmitted to all display devices along all HDMI data transmission lines by means of the HDMI multiplexer.
  • the command defined in the control module enables switching a display device receiver eye to passive mode upon entering the HDMI CEC control code.
  • the multiple screen display system comprises a control module enabling activating the receiver eye of a related display device upon the CEC address of any display device being entered together with the HDMI CEC control code.
  • HDMI CEC enables bidirectional data transfer.
  • the HDMI CEC command enables the display devices to send their CEC addresses, these CEC addresses are used to make a CEC address identification to determine the positions of the display devices in the display system, and the control module is thus enabled to identify the HDMI data transmission lines.
  • the CEC package containing the HDMI CEC control code together with the address information of the display device whose receiver eye is desired to be activated is transmitted to all display devices by means of the HDMI multiplexer.
  • the receiver eyes of the display devices which receive the HDMI CEC control code are switched to passive position.
  • the receiver eye of the display device whose CEC address is entered along with the control code is activated. This enables independent control of display devices in the multiple screen display system.
  • the multiple screen display system comprises a control module enabling activating the receiver eye of related display devices upon the CEC addresses of a plurality of display devices being entered together with the HDMI CEC control code.
  • the CEC package containing the HDMI CEC control code together with the address information of the display devices whose receiver eyes are desired to be activated, is transmitted to all display devices by means of the HDMI multiplexer.
  • the receiver eyes of the display devices which receive the HDMI CEC control code are switched to passive position.
  • the receiver eyes of the display devices whose CEC address is entered along with the control code are activated.
  • the multiple screen display system comprises a control module started in a start mode in which all receiver eyes are active.
  • device control is enabled by communication with an infrared receiver.
  • the multiple screen display system comprises a control module enabling reflecting on the screen a menu allowing selecting display devices by a start command sent by means of an infrared remote controller in the start mode, and executing the related operation by processing the selection made via the menu. Execution of user preferences are facilitated by reflecting this menu to the screen in the start mode and enabling executing the related operation by processing the selection made via the menu.
  • the multiple screen display system comprises a control module enabling switching the system to start mode during playing a content upon a user sending a command to the control module.
  • a control module enabling switching the system to start mode during playing a content upon a user sending a command to the control module.
  • a method for executing by means of the HDMI transmission lines formed to enable transmission HDMI data to all display devices by means of an HDMI multiplexer, the steps of, the control module sending HDMI CEC address transmission command to the display devices; feeding the display device CEC addresses back to the control module; identifying and saving the display device positions by means of the received CEC addresses; associating HDMI CEC commands with the identified addresses and transmitting them directly to a device whose CEC address is known; and activating the infrared receiver eye of the display device whose CEC address is entered.
  • infrared receivers of display devices are enabled to be activated and disabled by using HDMI CEC address and commands for remotely controlling a plurality of display devices.
  • the display devices are enabled to perform effective data communication.

Abstract

The present invention relates to a remote controlling method in which infrared communication is enhanced in a multiple screen display system comprising a plurality of display devices connected to a control module processing source files to be displayed on a plurality of display devices.

Description

A MULTIPLE SCREEN DISPLAY SYSTEM WITH ENHANCED REMOTE CONTROL EFFICIENCY
The present invention relates to a method facilitating control by means of infrared communication in a multiple screen display system comprising a plurality of display devices connected to a control module processing source files to be displayed on a plurality of display devices.
Display devices display images on their screens, and combining a plurality of display devices so as to form a wide-screen display system called a multiple screen setup or a video wall, is a function achievable by simultaneously using a plurality of separate display devices together. In general, the multiple screen setup term implies generating a single screen image by means of a plurality of display devices, from a combined image transmitted from a single video inlet. Multiple screen display systems may generally have 1x4, 2x2, 3x3, 4x4 or much larger screen arrangements.
Essentially, multiple screen display systems are preferred for being able to obtain a larger screen area by changing their arrangement, and a higher pixel intensity per unit cost, and they are advantageous due to production costs of single screens and enable achieving an extraordinary resolution when they are thus combined.
Multiple screen display systems are usually utilized at large, open public spaces such as stadiums. Multiple screen display systems are driven by video graphic cards having a plurality of monitor ports, but complex arrangements require special graphic processors that are able to manage large video walls. However, software based multiple screen controllers use computers and network equipment.
In multiple screen applications, a separate cable connection is used for each one of the display devices in the system, enabling data communication with a central computer.
Video distribution can be performed by various methods. In one of such methods, a central video distribution system is used, and each image to be displayed on a single display device is distributed by said central video distribution system. An image is appropriately split by the central system. Although they are independent of each other, the screens thus combined display as a single unit. In order to segment the image appropriately, the positions on the system of the display devices constituting the multiple screen display system, need to be identified. In such systems constituted by a plurality of display devices, controlling from a single point is advantageous. Being able to independently control the display devices is particularly critical in cases when reconfiguration is required in the planned number of display devices on which the image is to be reflected, and in case of a likely malfunction on one of the display devices. Such control can be managed by rearranging the physical connections of the system or by integrating an external control device to the structure. This makes it difficult for a user to control the multiple screen system and requires technical service assistance.
In multiple screen systems in which video and sound data transmission infrastructure is constituted by HDMI (high definition multimedia interface), controlling through HDMI CEC (consumer electronics control) command packets aims to facilitate said control. HDMI CEC is an HDMI feature designed for the users to command the devices connected through HDMI by using a single remote controller. Remote controllers transmit commands by communication between an infrared transmitter and an infrared receiver provided in the target device. For example, this enables using the remote controller of a display device for controlling a set-top box and/or a DVD player. HDMI CEC enables the devices connected by means of display device HDMI ports to bidirectionally communicate with the display device. Said devices may have some control over the display device, and the display devices may have some control over the other devices.
State of the art United States patent document no. US7786304 describes a packet generation method in a wireless HDMI media. Accordingly, sound and/or image data and control data can be transmitted through a single channel on HDMI.
State of the art United States patent document no. US7624166 describes a method of communication between devices by a single remote controller interacting with an external control unit for controlling a plurality of devices.
The present invention enables activating infrared receivers of display devices by using HDMI CEC addresses and commands for remotely controlling a plurality of display devices in a multiple screen display system.
In the multiple screen display system realized to achieve the aim of the present invention and disclosed in the first claim and the dependent claims, the display devices are essentially arranged in a matrix structure, enabling a main image to be viewed on the entire matrix structure by displaying certain segments of the main image on the screens according to their physical positions. At least one control module is provided, enabling data transfer through an HDMI CEC interface enabling the display devices to be able to communicate with each other in the system. The HDMI CEC interface is available to all devices connected via an HDMI cable and having CEC characteristics. CEC enhanced devices connected via HDMI cable can be controlled by a single remote controller. The devices connected by HDMI cable are controlled by remote controller. The controller is able to send data and commands by means of interaction between a receiver eye capable of infrared data exchange and a signal transmitter. CEC is a bidirectional communication system in which devices send confirmation messages upon receiving commands, thereby enabling availability of devices. The multiple screen display system further comprises an HDMI multiplexer enabling transmitting HDMI data to all display devices, a receiver eye integrated to each display device, adapted to detect a signal from an infrared controller to enable remote communication, and an HDMI transmission line enabling HDMI data transmission between the display devices. An HDMI port is provided on each display device, enabling data from the HDMI multiplexer to be transmitted to a display device. The HDMI data transmitted to a display device through its HDMI port, enables command transmission through HDMI CEC data packets as well as sound and video data transmission to said display device. A command sent from a single source is thus transmitted to a plurality of targets.
In the multiple screen display system of the invention, the control module transmits an HDMI CEC command to the display devices for them to send their CEC addresses. In response, the target display device to which the command is transmitted, feeds its CEC address data back to the control module. The control module enables making a CEC address identification by using the received CEC addresses. A control mechanism is predetermined to enable the infrared receiver eyes provided on each display device to switch between an active mode in which they are on, and a passive mode in which they are off, by a separate HDMI CEC control code command generated by the control module. The control module enables executing the step of switching the display device receiver eyes to passive mode upon the predefined HDMI CEC control code being entered to all display devices by means of the HDMI multiplexer. This code may be a given sequence of numbers or letters. This predetermined HDMI CEC control code, is transmitted to all display devices via the HDMI multiplexer. When a display device receives this command, the infrared receiver on the device is switched to the passive position, inhibiting its operation. The display devices are thus prevented from being controlled individually, enabling effective control of the entire multiple screen display system.
In an embodiment of the invention, the multiple screen display system comprises a control module enabling activating the receiver eye of a related display device upon the CEC address of any display device being entered together with the HDMI CEC control code. HDMI CEC commands can be transmitted to the control module by means of a device with controller function, or the control module activated by a controller may be enabled to generate such command. The control module sends a CEC address transmission command to all display devices, and the position of a related display device on the system is determined by using the CEC address information reaching the control module by the feedback of each display device sent upon receiving said command. The control module reaches the system consisting of all infrared receiver eyes by the predetermined HDMI CEC control command it sends to switch the display device infrared receiver eyes to passive position, switching them off. By the command sent to the display devices through combining the HDMI CEC control command and a CEC address, the receiver eye is activated of only the device at the CEC address to which the command is sent. For example, let's assume that an HDMI CEC control command is ‘RC01’, and the CEC address of a display device in the system is ‘VW13’. When the control module sends ‘RC01’ command, all infrared receiver eyes are switched to passive position. Whereas, when ‘RC01-VW13’ command is entered, all infrared receiver eyes are switched to passive position excluding that of the display device at the ‘VW13’ CEC address, which is switched to active position. A user is thus enabled to remotely control the positions of the display devices in the multiple screen display system.
In another embodiment of the invention, the multiple screen display system comprises a control module enabling activating the receiver eye of related display devices upon the CEC addresses of a plurality of display devices being entered together with the HDMI CEC control code. For example, let's assume that an HDMI CEC control command is ‘RC01’, and the CEC addresses of two separate display devices in the system are ‘VW12’ and ’VW13’. When the CEC codes of a plurality of display devices in the system are entered together with the HDMI CEC control command, such as ‘RC01-VW12-VW13’, infrared receiver eyes of all display devices in the system are switched to passive state excluding those of the display devices at the ‘VW12’ and ‘VW13’ CEC addresses, which are switch to active position. Controller efficiency is thus enhanced by reaching the control of a plurality of display devices in the multiple screen display system.
In another embodiment of the invention, the multiple screen display system comprises a control module started in a start mode in which all infrared receiver eyes are active. The start mode can be defined as the multiple screen display system being operative upon being connected to a power supply. In this mode, all infrared eyes are in active position when the system is initially started by a user. The infrared receiver eyes being in active position enables transmitting the same command to all display devices by using a single infrared transmitter. The entire multiple screen display system can thus be controlled as a single display device.
In another embodiment of the invention, the multiple screen display system comprises a control module enabling reflecting on the screen a menu allowing selecting display devices by a start command sent by means of an infrared remote controller in the start mode, and executing the related operation by processing the selection made via the menu. In the start mode, infrared receiver eyes of all devices are in active position. By means of the identical start command sent to all of the display devices via the controller, a user is enabled to select the display devices desired to be controlled individually on the system through a selection menu of the control module segmented into images so as to be reflected as a whole on the entire surface of screens of the multiple screen display system. Upon selection of the display device, the control module determines the CEC address information of the related device and sends the HDMI CEC control command. This enables activating and remotely controlling any device on the system or display devices of a desired number and at desired positions. As a further function of the control module, if there are activated display devices by an HDMI CEC control command, an additional step can be executed to reflect an image on the screens by segmenting it between only the display device screens whose infrared receiver eyes are turned on. A user can thus remotely control the multiple screen display system.
In an embodiment of the invention, the multiple screen display system comprises a control module enabling during playing a content, switching the system to start mode upon a user sending a command. In the multiple screen display system, an image content is enabled to be displayed on the entire system surface by being segmented on the display device screens in the system. By switching to start mode, the selection screen can be used of the display device desired to be controlled independently. When the need arises to adjust one of the display devices on the system or when it is desired to display an image by segmenting it on a surface smaller than the entire system, the system can be switched to the start mode upon a user sending a command with a predetermined code to the control module by means of the controller. By this, the display devices are enabled to be controlled independently when desired.
In another embodiment of the invention, a method is provided for executing by means of the HDMI transmission lines formed to enable transmission HDMI data to all display devices by means of an HDMI multiplexer the steps of: the control module sending an HDMI CEC address transmission command to the display devices; feeding the display device CEC addresses back to the control module; identifying and saving the display device positions by means of the received CEC addresses; associating HDMI CEC commands with the identified addresses and transmitting them directly to a device whose CEC address is known; and activating the infrared receiver eye of the display device whose CEC address is entered. Remote controlling efficiency of the multiple screen display system is thus enhanced, enabling controlling it by means of a single controller.
The invention enables realizing a multiple screen display system in which collective or independent remote controllability efficiency of display devices in the system is enhanced, providing ease of use.
The multiple screen display system comprises a plurality of display devices having a serial data transmission line in between, transmitting an image or a video signal along the transmission line to an adjacent device, at least one control module enabling data transfer by an HDMI CEC interface allowing the display devices to communicate with each other, an HDMI multiplexer enabling transmitting HDMI data to all of the display devices, a receiver eye integrated to each one of the display devices, adapted to detect a signal from an infrared controller to enable remote communication, and an HDMI transmission line enabling data transmission between the display devices. HDMI CEC is a discrete electric signal, independent of the other HDMI signals coming through the same HMDI transmission line. A CEC signal can be transmitted independent of a high speed HDMI signal. This signal allows deactivating the high speed HDMI circuit of a device in sleep mode, but enables waking it by means of the CEC. Since CEC command is directly connected between all HDMI ports of a device, when HDMI CEC transfer is enabled by a single shared BUS (methods of data transfer between control module components and control units) protocol, the CEC command can pass through a device even when it is (not just resting in sleep mode but) fully turned off. By this, data from a control module can be used to wake up and activate fully turned off display devices. The HDMI multiplexer enabling transmitting the HDMI data to all display devices, enables feeding a command or broadcast data sent to the multiple screen display system, simultaneously to all display devices. The receiver eye adapted to detect a signal from the infrared controller to enable remote communication with the display devices, is integrated on each one of the display devices. A separate receiver eye may be provided in the system for controlling the entire multiple screen display system. An HDMI transmission line is formed in the multiple screen display system, enabling HDMI data transmission between the display devices. HDMI CEC enables bidirectional data transfer.
The multiple screen display system of the invention comprises a control module enabling executing the steps of
- sending the display devices’ CEC addresses by HDMI CEC command,
- making CEC address identification of the related display devices by means of the positions of the received CEC addresses,
- passivating the display device receiver eyes upon a predefined HDMI CEC control code being entered to all display devices by means of the HDMI multiplexer.
By this, the control module is enabled to identify the HDMI data transmission lines. A control code is defined in the control module to control the operational functions of the receiver eyes. The control code can be transmitted through all HDMI data transmission lines to the display devices via HDMI CEC. The command generated by the control module is transmitted to all display devices along all HDMI data transmission lines by means of the HDMI multiplexer. The command defined in the control module enables switching a display device receiver eye to passive mode upon entering the HDMI CEC control code. By this, the entire system can be controlled from a single source instead of controlling individual display devices in the multiple screen display system.
In an embodiment of the invention, the multiple screen display system comprises a control module enabling activating the receiver eye of a related display device upon the CEC address of any display device being entered together with the HDMI CEC control code. HDMI CEC enables bidirectional data transfer. The HDMI CEC command enables the display devices to send their CEC addresses, these CEC addresses are used to make a CEC address identification to determine the positions of the display devices in the display system, and the control module is thus enabled to identify the HDMI data transmission lines. The CEC package containing the HDMI CEC control code together with the address information of the display device whose receiver eye is desired to be activated, is transmitted to all display devices by means of the HDMI multiplexer. The receiver eyes of the display devices which receive the HDMI CEC control code are switched to passive position. The receiver eye of the display device whose CEC address is entered along with the control code, is activated. This enables independent control of display devices in the multiple screen display system.
In another embodiment of the invention, the multiple screen display system comprises a control module enabling activating the receiver eye of related display devices upon the CEC addresses of a plurality of display devices being entered together with the HDMI CEC control code. The CEC package containing the HDMI CEC control code together with the address information of the display devices whose receiver eyes are desired to be activated, is transmitted to all display devices by means of the HDMI multiplexer. The receiver eyes of the display devices which receive the HDMI CEC control code are switched to passive position. The receiver eyes of the display devices whose CEC address is entered along with the control code, are activated. By this, a plurality of display devices are combined and are enabled to be controlled collectively so as to form a screen with varying matrix structures in the multiple screen display system.
In another embodiment of the invention, the multiple screen display system comprises a control module started in a start mode in which all receiver eyes are active. In structures with independent display devices, device control is enabled by communication with an infrared receiver. By this, all independent display devices in the system are enabled to be controlled and users are presented with an option to select by disabling controls of desired display devices.
In another embodiment of the invention, the multiple screen display system comprises a control module enabling reflecting on the screen a menu allowing selecting display devices by a start command sent by means of an infrared remote controller in the start mode, and executing the related operation by processing the selection made via the menu. Execution of user preferences are facilitated by reflecting this menu to the screen in the start mode and enabling executing the related operation by processing the selection made via the menu.
In another embodiment of the invention, the multiple screen display system comprises a control module enabling switching the system to start mode during playing a content upon a user sending a command to the control module. When a user has formed a screen system customized for the content being displayed, in order for the user to be able to switch to adaptable preferences such as switching to a different screen setup upon changing the content, repeated customizations of the display device controls are enabled by the option of switching back to the start mode.
In another embodiment of the invention, a method is provided for executing by means of the HDMI transmission lines formed to enable transmission HDMI data to all display devices by means of an HDMI multiplexer, the steps of, the control module sending HDMI CEC address transmission command to the display devices; feeding the display device CEC addresses back to the control module; identifying and saving the display device positions by means of the received CEC addresses; associating HDMI CEC commands with the identified addresses and transmitting them directly to a device whose CEC address is known; and activating the infrared receiver eye of the display device whose CEC address is entered. By this, a user can select the screen size on which the content is to be reflected, thereby providing ease of use by customizing the displaying manner.
In the multiple screen display system of the present invention, infrared receivers of display devices are enabled to be activated and disabled by using HDMI CEC address and commands for remotely controlling a plurality of display devices. Thus, the display devices are enabled to perform effective data communication.

Claims (7)

  1. A multiple screen display system comprising a plurality of display devices having a serial data transmission line in between, transmitting an image or a video signal along the transmission line to an adjacent device, at least one control module enabling data transfer by an HDMI CEC interface allowing the display devices to communicate with each other, an HDMI multiplexer enabling transmitting HDMI data to all of the display devices, a receiver eye integrated to each one of the display devices, adapted to detect a signal from an infrared controller in order to enable remote communication, and an HDMI transmission line enabling data transmission between the display devices, characterized by the control module enabling executing the steps of
    - sending the display devices’ CEC addresses by HDMI CEC command,
    - making CEC address identification by means of the positions of the received CEC addresses,
    - passivating the display device receiver eyes upon a predefined HDMI CEC control code being entered to all display devices by means of the HDMI multiplexer.
  2. A multiple screen display system according to claim 1, characterized by the control module enabling activating the receiver eye of a related display device upon the CEC address of any display device being entered together with the HDMI CEC control code.
  3. A multiple screen display system according to any one of the preceding claims, characterized by the control module enabling activating the receiver eye of related display devices upon the CEC addresses of a plurality of display devices being entered together with the HDMI CEC control code.
  4. A multiple screen display system according to any one of the preceding claims, characterized by the control module started with a start mode in which all receiver eyes are active.
  5. A multiple screen display system according to claim 4, characterized by the control module enabling reflecting on the screen a menu allowing selecting display devices by a start command sent by means of an infrared remote controller in the start mode, and executing the related operation by processing the selection made via the menu.
  6. A multiple screen display system according to claim 4 or 5, characterized by the control module enabling during playing a content, switching the system to start mode upon a user sending a command.
  7. A method for executing by means of the HDMI transmission lines formed to enable transmission HDMI data to all display devices by means of an HDMI multiplexer, the steps of, the control module sending HDMI CEC address transmission command to the display devices; feeding the display device CEC addresses back to the control module; identifying and saving the display device positions by means of the received CEC addresses; associating HDMI CEC commands with the identified addresses and transmitting them directly to a device whose CEC address is known; and activating the receiver eye of the display device whose CEC address is entered.
PCT/EP2019/057545 2018-04-02 2019-03-26 A multiple screen display system with enhanced remote control efficiency WO2019192878A1 (en)

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