GB2610678A - Display device, computer system, method and computer program product - Google Patents

Display device, computer system, method and computer program product Download PDF

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Publication number
GB2610678A
GB2610678A GB2208373.7A GB202208373A GB2610678A GB 2610678 A GB2610678 A GB 2610678A GB 202208373 A GB202208373 A GB 202208373A GB 2610678 A GB2610678 A GB 2610678A
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Prior art keywords
display
user
bit
display device
control information
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GB202208373D0 (en
GB2610678B (en
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Barl Tobias
Wanner David
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Fujitsu Client Computing Ltd
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Fujitsu Client Computing Ltd
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    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F1/00—Details not covered by groups G06F3/00 - G06F13/00 and G06F21/00
    • G06F1/26—Power supply means, e.g. regulation thereof
    • G06F1/32—Means for saving power
    • G06F1/3203—Power management, i.e. event-based initiation of a power-saving mode
    • G06F1/3206—Monitoring of events, devices or parameters that trigger a change in power modality
    • G06F1/3231—Monitoring the presence, absence or movement of users
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F1/00—Details not covered by groups G06F3/00 - G06F13/00 and G06F21/00
    • G06F1/26—Power supply means, e.g. regulation thereof
    • G06F1/32—Means for saving power
    • G06F1/3203—Power management, i.e. event-based initiation of a power-saving mode
    • G06F1/3206—Monitoring of events, devices or parameters that trigger a change in power modality
    • G06F1/3215—Monitoring of peripheral devices
    • G06F1/3218—Monitoring of peripheral devices of display devices
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F1/00—Details not covered by groups G06F3/00 - G06F13/00 and G06F21/00
    • G06F1/26—Power supply means, e.g. regulation thereof
    • G06F1/32—Means for saving power
    • G06F1/3203—Power management, i.e. event-based initiation of a power-saving mode
    • G06F1/3234—Power saving characterised by the action undertaken
    • G06F1/325—Power saving in peripheral device
    • G06F1/3265—Power saving in display device
    • 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
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2330/00—Aspects of power supply; Aspects of display protection and defect management
    • G09G2330/02—Details of power systems and of start or stop of display operation
    • G09G2330/021—Power management, e.g. power saving
    • G09G2330/022—Power management, e.g. power saving in absence of operation, e.g. no data being entered during a predetermined time
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2354/00—Aspects of interface with display user
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
    • Y02D10/00—Energy efficient computing, e.g. low power processors, power management or thermal management

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  • Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • General Engineering & Computer Science (AREA)
  • General Physics & Mathematics (AREA)
  • Human Computer Interaction (AREA)
  • Controls And Circuits For Display Device (AREA)
  • Digital Computer Display Output (AREA)
  • Power Sources (AREA)

Abstract

A display device A has an internal sensor for detecting user presence in a detection area, an interface for receiving control information from another external device, and a controller for controlling an operating state of the display device A (e.g., whether the display A is to be turned off or to a power saving mode) based on whether a user is detected by the sensor and by the external device. The external device may be secondary displays or monitors B, C, D or processor of a computer. The controller changes the display to a power saving mode if user absence is detected by both the sensor of the display device A and the external device B, C, D and changes the display to a normal operating mode if user presence is detected by either the sensor of the display device A or the external device B, C, D. Updated control information is transmitted via the interface to the other device B, C, D if a previous operating state differs from the selected operating state. Control information may be transmitted using Multi-Monitor Sync (MMS) software by changing bit values. This enables devices to synchronise their operating state.

Description

Description
Display device, computer system, method and computer program product The present application relates to a display device and a computer system. In particular, an improved system for detecting the presence of a user is described.
For several generations, certain displays, such as the Fujitsu P-Line models, have been equipped with integrated infrared-based presence or proximity sensors (PS) for reducing power consumption in the absence of the user. The detection angle of these proximity sensors is, as shown in figure 1, relatively narrow (±20' from the perpendicular axis).
If the user moves too far away from the centre of the display, the display may enter power saving mode inadvertenLly. In dual. or -di. scenarios, where one P-Line model (with PS) is extended by one or more mainstream models (13-Line, without PS), this can occur more frequently, as the likelihood of the user sitting centrally in front of a display with a built-in proximity sensor is reduced. Fulitsu's DispleyvlewTM software ensures that the P-Line proximity sensor also switches the B--line monitor into standby mode when the user is absent.
A corresponding method, a control software and a system are disclosed in 17.7 10 2017 103 922 E3. _As disclosed Therein, a display device with a built-in presence sensor serves as a master display device controlling the state of one or more -2 -slave displays, which may or may no have a built-in presence sensor.
In the future, proximity sensors will be introduced in other. models, such as the Fujitsu B-Line display models. This means that without further intervention, every display will go into power-saving mode individually, depending on the presence of the user or based on a sensor from one pre-defined main display.
In accordance with a first aspect, a display device is disclosed which comprises a sensor for detecting the presence of a user in a detection area, at least one interface for receiving control information from at least one external device, in particular another display device or a processing device of a computer, and at least one controller. The controller is configured to control a power saving state of the display device based at least on a first user detection status obtained from the sensor and at least one auxiliary control information received via the at least one interface, wherein the at least one auxiliary control information indicates a second user detection status obtained from the external device.
In accordance with a second aspect, a computer system is disclosed that comprises a processing device of a computer and at least two display devices according to the first aspect, connected to each other and/or to the processing device via at least one interface.
According to other aspects, a method for determining an operating state of a device, in particular a display device, -3 -and a computer program product for synchronizing at least one display setting are disclosed.
The inventors have recognized that the presen:_e of additional presence or proximity sensors offers the opportunity for further improving user presence detection. This can be achieved by taking account of the detection results of multiple displays. Using additional control information from an external device, in particular an additional display with a proximity sensor, reduces the number of unwanted standby situations. This means that user presence detection becomes better with each additional The invention is described in further detail hereafter by reference to different exemplary embodiments and scenarios.
Figure 1 shows a display device with a built-in proxa.mity sensor.
Figure 2 shows a flowchart nf a firct method for synchronizing a power saving. state.
Figure 3 shows a flowchart of a second method for synchronizing a power saving state.
Figures 4 to 6 show difierent scenarios according to a first design of a computer system.
Figure 7 shows a second design of a computer system.
Figures 8 to 10 show. GUI visualizations of different scenarios and computer systems. -4 -
Solutions for synchronizing certain display settings in a multi-screen scenario are known from the prior art. However, as detailed below, these alone are insufficient to synchronize and control sensor-based energy management options.
For successful, distributed synchronization of an operating state, it is particularly advantageous if a device distinguishes between an internally determined status and an externally determined status.
Figure 2 shows a flowchart a inerhoci for synchronizing a power saving state, in particular a display device with a built-in proximity sensor, as shown in Figure 1.
In a step Si, an internal user detection status is identified by means of a device-internal first sensor. In particular, the first user detection status indicates whether a user was detected in a detection area of a built-in proximity sensor within a predetermined time span, for example, five seconds.
In a step S2, an externally determined user detection status is identified. For this purpose, in the exemplary embodiment, a control information received via a device interface is evaluated, which indicates a corresponding operating state determined by another device, which was determined by the other device on the basis of at least one second sensor.
In a step 53, a first predetermined operating state is selected, in particular a power saving mode, if both the first user detection status and the second user detection status indicate that no user presence has been detected. For -5 -example, if no user is present at all, the display device is turned off or the screen is darkened.
In an alternative step 54, a second predetermined operating state is selected, in particular a normal operating mode, if the internal user detection status or the external user detection status indicates that a user presence has been detected. In the event that a user is detected in front of at least one display device linked to the current display device, the display devices will remain switched on.
In a further, optional step 35, an updated control information is transmitted via a device interface to the other device if a previous operating state differs from the selected operating state. This enables other devices, in particular other display devices, to be informed of the change in operating state detected by the current display device and to change their own operating state synchronously if necessary.
The following describes a specific imblervehtation of the method described above on the basis of the Multi-Monitor Sync (?MS) technology and the use of manufacturer-specific virtual control panels (VCP), which can be carried out autonomously by the controllers of the participating displays if required.
Solution 1: Hardware-based synchronization (MMS) The aim is also to sync the PS behaviour in addition to simple settings. Synchronizing PS behaviour is more challenging than normal settings because it needs to implement a certain logic. If 4 displays are supported, the -6 -resulting matrix would look as follows, where 0 stands for "User present" and 1 for "User absent": Individual PS Synced PS Display Display Display Display A and B A B c D and C and
D
0 0 0 0 0 0 0 0 1 0 0 0 1 0 0 0 0 1 1 0 0 1 0 0 0 0 1 0 1 0 0 1 1 0 0 0 1 1 1 0 1 0 0 0 0 1 0 0 1 0 1 0 1 0 0 1 0 1 1 0 1 1 0 0 0 1 1 0 1 0 1 1 1 0 0 1 1 1 1 1 Unfortunately, with known hardware solutions such as MMS, there is no central controller that collects information from all four proximity sensors and manages the behaviour based on the calculation of all sensor data. Each display comprises and acts as its own controller -the scaler IC -which can only communicate with those displays directly before and after it in a daisy chain configuration, e.g. via a DisplayPort connection.
To address this issue, three individual PS bits are established: -7 - -Bit a: (No VCP) "Internal PS Detection" (changes to 1 if the user is absent for > 5 seconds) -Bit b: (VCP supports read/write) "External PS detection" (this one is used for MMS) -Bit c: (VCP supports read-only access) "Calculated PS detection" Bit c is always relevant for the PS behaviour (e.g. initiating a power saving mode) of the displays.
Bit b is used for status communication via MMS.
In the event of a state change of bit a, each display must transfer the value of bit a to bit c.
In the event of a change in bit b, each display must calculate: Bit a A bit b = bit c (AND gate) AND gate (A) Input Output a ID a AND b ^ ^ 0 0, 0 0 0 In both cases, if bit c does not equal bit b, the value of bit b will be overwritten with the value of bit c.
The method is shown in the flowchart according to Figure 3.
Example scenario: The user comes back from a coffee break. Four displays A to D are connected via daisy chain, as shown in Figure 4.
While the user is absent, the initial situation is as follows: Display A Display B Display C Display D Bit a 1 1 1 1 Bit b 1 1 1 1 Bit c 1 1 1 1 Display status User absent User absent User absent User absent The user then returns and sits in front of display A. Display A recognizes a state change of bit a.
Display A Display B Display C Display D Bit a 1 4 0 1 1 1 Bit b 1 1 1 1 Bit c 1 1 1 1 Display status User absent User absent User absent User absent Bit a of display A is now 0, so that bit c will be changed to the same value.
Display A Display B Display C Display D Bit a 0 1 1 1 Bit b 1 1 1 1 Bit c 1 4 0 1 1 1 Display status User present User absent User absent User absent Bit c (0) of display A does not equal bit b (1), so that bit b will assume the value of bit c (0).
Display A Display B Display C Display D Bit a 0 1 1 1 Bit b 1 4 0 1 1 1 Bit c 0 1 1 1 Display status User present User absent User absent User absent Because bit b of display A has changed, MMS is triggered to synchronize the value with the next display in the chain (display B).
Display A Display B Display C Display D Bit a 0 1 1 1 Bit b 0 1 4 0 1 1 Bit c 0 1 1 1 Display status User present User absent User absent User absent Display B recognizes a state change of bit b, calculates bit a (1) A bit b (0) -bit c (0).
In accordance with the MMS principle, display B informs display A and display C of the value of bit B. Display A Display B Display C Display D Bit a 0 1 1 1 Bit b 0 0 1 4 0 1 Bit c 0 1 4 0 1 1 Display status User present User present User absent User absent -10 -Bit c (0) of display B is equal to bit b (0), so bit b will not change. As bit b (0) of display A is already 0, the MMS signal also does not change anything for display A. Display C and display D follow the same procedure as display B Display A Display B Display C Display D Bit a 0 1 1 1 Bit b 0 0 0 0 Bit c 0 0 0 0 Display status User present User present User present User present Now all displays are aware that the user is present, even if the sensors of displays B, C and D report that the user is absent. All displays remain active.
Follow-up scenario: The user moves from display A to display B as shown in Figure 5.
Display A and display B will recognize a change of state of bit a.
Display A Display B Display C Display D Bit a 0 4 1 140 1 1 Bit b 0 0 0 0 Bite 0 0 0 0 Display status User present User present User present User present Display A transfers the value of bit a to bit C. Display B transfers the value of bit a to bit c.
Display A Display B Display C Display D Bit a 1 0 1 1 Bit b 0 0 0 0 Bite 0 4 1 0 -no change 0 0 Display status User absent User present User present User present Bit c (1) of display A does not equal bit b (0), so that bit b will assume the value of bit c (1).
Bit c (0) of display B equals bit b (0), so bit b will not change.
Display A Display B Display C Display D Bit a 1 0 1 1 Bit b 0 4 1 0 0 0 Bite 1 0 0 0 Display status User absent User present User present User present Because bit b of display A has changed, MMS is triggered to synchronize the value to that of the next display in the chain (display B).
Display A Display B Display C Display D Bit a 1 0 1 1 Bit b 1 0 4 1 0 0 Bite 1 0 0 0 Display status User absent User present User present User present Display B recognizes a state change of bit b, calculates bit a (0) A bit b (1) = bit c (0).
-12 -Bit c (0) of display B does not equal bit b (1), so bit b will change to 0.
Display A Display B Display C Display D Bit a 1 0 1 1 Bit b 1 1 4 0 0 0 Bit c 1 0 0 0 Display status User absent User present User present User present In accordance with the MMS principle, display B informs display A and display C of the value of bit b (0).
Display A Display B Display C Display D Bit a 1 0 1 1 Bit b 1 4 0 0 0 0 Bit c 1 0 0 0 Display status User absent User present User present User present Display A recognizes a state change of bit b, calculates bit a (1) A bit b (0) = bit c (0).
Display A Display B Display C Display D Bit a 1 0 1 1 Bit b 0 0 0 0 Bit c 1 4 0 0 0 0 Display status User present User present User present User present Bit c (0) of display A equals bit b (0), so bit b will not change.
-13 -All displays are aware of the presence of the user. The absence detection of display A has been corrected by the presence detection of display B. Follow-up scenario: The user leaves the workstation for lunch as shown in Figure 6.
Display B recognizes a state change of bit a.
Display A Display B Display C Display D Bit a 1 0 4 1 1 1 Bit b 0 0 0 0 Bite 0 0 0 0 Display status User present User present User present User present Bit a of display B is now 1, so that bit c will also assumo this value.
Display A Display B Display C Display D Bit a 1 1 1 1 Bit b 0 0 0 0 Bite 0 0 4 1 0 0 Display status User present User absent User present User present Bit c (1) of display B does not equal bit b (0), so that bit b assumes the value of bit c (1).
Display A Display B Display C Display D Bit a 1 1 1 1 Bit b 0 0 4 1 0 0 Bite 0 1 0 0 -14 -Display User User absent User User status present present present In accordance with the MMS principle, display B informs display A and display C of the value of bit b.
Display C will inform display D about the value of bit b.
Display A Display B Display C Display D Bit a 1 1 1 1 Bit b 0 4 1 1 0 4 1 0 4 1 Bit c 0 1 0 0 Display status User present User absent User present User present Displays A, C and D recognize a state change of bit b, calculate bit a (1) A bit b (1) = bit c (1).
Display A Display B Display C Display D Bit a 1 1 1 1 Bit b 1 1 1 1 Bit c 041 1 0 4 1 0 4 1 Display status User absent User absent User absent User absent The user's absence is now synchronized across all displays. As a result, all displays switch synchronously into a power saving mode. For example, each of the displays starts to reduce the brightness by 1% per second until it reaches a predetermined, minimum brightness.
Solution 2: Software-based synchronization (DisplayView) -15 -Additionally or alternatively, it may be advantageous to use a software component such as Fujitsu's DisplayView software, which runs on a computer connected to the displays to synchronize the PS behaviour in non-daisy chain configurations or in mixed scenarios.
Example scenario: The user comes back from the coffee break. Four displays A to D are individually connected to the system as shown in Figure 7.
While the user is absent, the initial situation is as follows: Display A Display B Display C Display D Bit a 1 1 1 1 Bit b 1 1 1 1 Bit c 1 1 1 1 Display status User absent User absent User absent User absent The user then returns and sits in front of display A. Display A recognizes a state change of bit a.
Display A Display B Display C Display D Bit a 1 4 0 1 1 1 Bit b 1 1 1 1 Bit c 1 1 1 1 Display status User absent User absent User absent User absent Bit a of display A is now 0, so that bit c will also assume this value.
Display A Display B Display C Display D -16 -Bit a 0 1 1 1 Bit b 1 1 1 1 Bit c 1 4 0 1 1 1 Display status User present User absent User absent User absent Bit c (0) of display A does not equal bit b (1), so that bit b will assume the value of bit c (0).
DisplayView recognizes the change of bit c, applies the logic detailed above to determine a synchronized PS status, and changes bit b for all displays.
Display A Display B Display C Display D Bit a 0 1 1 1 Bit b 1 4 0 1 4 0 1 4 0 1 4 0 Bit c 0 1 1 1 Display status User present User absent User absent User absent Displays B, C and D recognize a state change of bit b, calculate bit a (1) A bit b (0) = bit c (0).
Display A Display B Display C Display D Bit a 0 1 1 1 Bit b 0 0 0 0 Bit c 0 1 4 0 1 4 0 1 4 0 Display status User present User present User present User present With the help of DisplayView, the user presence is now synchronized across all displays without MMS.
-17 -Solution 3: Combined hardware-(MMS) and software(DisplayView) based synchronization If the two above solutions are combined, it can be difficult to know which displays need to be synchronized via MMS and which displays need to he synchronized via DisplayView.
For this purpose, two new VCP codes can be established within the manufacturer-defined range of the VCP code table.
Example:
VCP Code: Presence Sensor Synchronization (PSS) Ox00: MMS of the presence sensor is switched off Ox01: MMS of the presence sensor is switched on VCP Code: Sync verifier value Can contain a 2-byte hex value from Ox00 to OxFF. The default value for the displays is Ox00. The value will be synchronized via MMS, but does not affect the display settings. The purpose is for DisplayView to write a random value (except Ox00) into it to see which displays are synchronized with each other.
Procedure: During display initialization, the DisplayView software running on the computer can check the PSS status of each display. For all displays with PSS status Ox01, it will write a random value from Ox01 to OxPF into the Sync verifier VCP code of one display and read the value from all other displays. Those displays which will have the same Sync verifier value are confirmed to be synchronized by MMS.
-18 -DisplayView will visually indicate those displays which are synced by MMS via a lock icon placed between them.
In the scenario below, DisplayView will not need to handle synchronization, as all displays which have the PSS capability are already synced internally. A possible GUI visualization of this scenario is shown in Figure 8. In the example described, the rightmost monitor (B24-9 WE) does not have a built-in presence sensor, and therefore does not need to be involved in syncing.
As an option, the monitor B24-9 WE is controlled by DisplayView in accordance with the method described in DE 10 2017 103 922 B3. The combination of the left-hand three displays 92410 WE, P2110 WE CAN and B2410 WE together performs the role of master and the right-hand display B24-9 WE performs the role of slave.
In the scenario below, DisplayView will need to handle the syncing between the daisy-chain concatenation of displays 1 and 2 and the daisy-chain concatenation of displays 3 and 4. The dotted line in the GUI visualization as shown in Figure 9, which indicates the syncing, has no lock icon indicating the MMS capability.
In the scenario below, DisplayView will need to handle the syncing between all displays. The dotted line in the GUI visualization as shown in Figure 10 shows that these displays will need to and can be synchronized, but the missing lock icon indicates the missing MMS capability.
-19 -The invention has been illustrated above using different exemplary embodiments, computer system configurations and scenarios. Of course, other exemplary embodiments, computer system configurations and scenarios are also possible, in which the detection results of proximity sensors of at least two different devices are identified and combined in order to determine an operating state of a device, as shown in the claims.

Claims (15)

  1. -20 -Patent clams 1. Display device, comprising: - a sensor for detecting the presence of a user in a detection area; - at least one interface for receiving control information from at least one external device, in particular another display device or a processing device of a computer, and - at least one controller configured to control a power saving state of the display device based at least on a first user detection status obtained from the sensor and at least one auxiliary control information received via the at least one interface, wherein the at least one auxiliary control information indicates a second user detection status obtained from the external device.
  2. 2. Display device according to Claim 1, wherein the controller is configured to change into a power savi.nq mode if the first user detection status and the second user detection status indicate that no user presence was detected, and to change into a normal operating mode if the first user detection status or the second user detection status indicate that a user presence was detected.
  3. 3. Display device according to Claim 1 or 2, wherein the controller is further configured to transmit an updated auxiliary control information to the at least one external device if the power saving state of the display device changes.
  4. 4. Display device according to Claim 3, wherein the controller is configured to transmit the updated auxiliary control information to the at least one external device if -21 -the first or second user detection status changes and the second user detection status does not match the power saving state of the display device as determined by the controller based on the first user detection status and the second user detection status.
  5. 5. Display device according to any one of Claims 1 to 4, wherein the controller uses at least three status bits for controlling the power saving state, wherein - a first status bit (a) indicates whether a user presence has been detected by the sensor within a predetermined period of time; - a second status bit (b) indicates whether a user presence is signalled by or to another display device; and - a third status bit (c) indicates whether the display device is currently in a power saving state; wherein - the state of the second status bit (b) is synchronized with the external device.
  6. 6. Computer system comprising: - a processing device of a computer and - at least two display devices according to any one of Claims 1 to 5, which are connected to each other and/or to the processing device via the at least one interface.
  7. 7. Computer system according to Claim 6, wherein the at least two display devices are connected to each other via a direct connection, in particular a DisplayPort connection, and a first display device generates the auxiliary control information for a second display or vice versa.
  8. 8. Computer system according to Claim 7, wherein the auxiliary control information is synchronized between the -22 -first and the second monitor by means of Multi-Monitor Sync, MMS.
  9. 9. Computer system according to Claim 6, wherein the at least two display devices are coupled with each other indirectly via the processing device, in particular via two DisplayPort, HDMI, DVI, USB-C or VGA connections, and a software component executed by the processing device synchronizes the auxiliary control information between the two or more display devices, in particular requesting said information from a first display and supplying it to a second display or vice versa.
  10. 10. Computer system according to any one of Claims 6 to 9, wherein the processing device and/or the at least two display devices are configured to synchronize at least one display setting between the at least two display devices, wherein the at least one synchronized display setting comprises the auxiliary control information.
  11. 11. Computer system according to Claim 10, wherein the processing device is configured to identify whether the at least two display devices synchronize the at least one display setting among one another, and to transfer the at least one display setting to at least one further display device which does not synchronize the at least one display setting with the first display device.
  12. 12. Method for determining an operating state of a device, in particular a display device, having the following steps: -identifying (Si) an internal user detection status using a device-internal first sensor; -23 - - identifying (52) an external user detection status by means of a control information received via a device interface, wherein the control information indicates an operating state of another device, which state has been determined by the other device on the basis of at least one second sensor; - selecting (53) a first predetermined operating state, in particular a power saving mode, if both the first user detection status and the second user detection status indicate that no user presence has been detected; and - selecting (54) a second predetermined operating state, in particular a normal operating mode, if the internal user detection status or the external user detection status indicate that a user presence has been detected.
  13. 13. Method according to Claim 12, having the additional step: - if a previous operating state differs from the selected operating state, transferring (55) an updated control information via the device interface to the other device.
  14. 14. Computer program product for synchronizing at least one display setting, in particular a status bit (b), which indicates whether a user presence has been detected by a display device, wherein the computer program product, when executed by a data processing device, performs the following steps: - identifying which display devices of a plurality of display devices connected to the data processing device synchronize display settings with each other; - monitoring at least one selected display setting of a first display device of the plurality of display devices; - if a value of the monitored display setting changes, transferring the changed value to at least one further -24 -display device of the plurality of display devices that does not synchronize its display settings with the first display device.
  15. 15. Computer program product according to Claim 14, wherein in the identifying step the computer program product writes a value selected by the computer program product into a register of the first display device and checks whether corresponding registers of the other display devices assume the selected value.
GB2208373.7A 2021-07-06 2022-06-08 Display device, computer system, method and computer program product Active GB2610678B (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102021117438 2021-07-06
DE102021125249.0A DE102021125249B3 (en) 2021-07-06 2021-09-29 Display device, computer system, method and computer program product

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GB202208373D0 GB202208373D0 (en) 2022-07-20
GB2610678A true GB2610678A (en) 2023-03-15
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