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EP4055462A1 - Dispositif d'affichage et son procédé d'émission de signaux - Google Patents

Dispositif d'affichage et son procédé d'émission de signaux

Info

Publication number
EP4055462A1
EP4055462A1 EP20797706.7A EP20797706A EP4055462A1 EP 4055462 A1 EP4055462 A1 EP 4055462A1 EP 20797706 A EP20797706 A EP 20797706A EP 4055462 A1 EP4055462 A1 EP 4055462A1
Authority
EP
European Patent Office
Prior art keywords
upstream
display device
input signals
signals
upstream signal
Prior art date
Legal status (The legal status 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 status listed.)
Pending
Application number
EP20797706.7A
Other languages
German (de)
English (en)
Inventor
Angel Chen
Tobias Barl
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Fujitsu Client Computing Ltd
Original Assignee
Fujitsu Client Computing Ltd
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.)
Filing date
Publication date
Application filed by Fujitsu Client Computing Ltd filed Critical Fujitsu Client Computing Ltd
Publication of EP4055462A1 publication Critical patent/EP4055462A1/fr
Pending legal-status Critical Current

Links

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
    • 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
    • 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
    • G09G2370/20—Details of the management of multiple sources of image data
    • 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
    • G09G2370/22—Detection of presence or absence of input display information or of connection or disconnection of a corresponding information source
    • 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
    • G09G2370/24—Keyboard-Video-Mouse [KVM] switch

Definitions

  • the invention pertains to a display device and corresponding method implemented for switching upstream signals within a display device to an upstream signal interface of the display device.
  • some displays or display devices come with integrated signal interface hubs, e.g. USB hubs, providing at least two upstream ports (e.g. lx USB Type B port, lx USB Type C port) to support the legacy system and new system at the same time.
  • upstream ports e.g. lx USB Type B port, lx USB Type C port
  • OSD on-screen display
  • the object of the present invention is to describe a display device and corresponding method implemented for switching upstream signals within a display device to an upstream signal interface of the display device which overcomes the above-mentioned disadvantages.
  • the display device provides at least one input signal interface for receiving input signals from an input signal source.
  • the input signal source hereto is connected to the display device via the at least one input signal interface.
  • the input signal source is for example given by an external device connected to the display device.
  • the display device provides two input signal interfaces. These two input signal interfaces may be configured so as to receive input signals of a same type or standard or to receive input signals of at least two different types or standards.
  • the input signals comprise one or a combination of video, image, sound or data signals from an external source.
  • the display device provides at least two upstream signal interfaces for exchanging upstream signals.
  • the display device may be configured so as to provide at least two upstream signal interfaces for exchanging upstream signals depending on the input signals.
  • Each upstream signal interface can be configured as input and/or output signal interface to receive and/or provide input and/or output signals respectively.
  • upstream signals may comprise one or a combination of input signals and/or output signals of the kind explained above.
  • At least one upstream signal interface may be configured as output signal interface providing output signals, in particular data signals, in particular KVM (Keyboard Video Mouse) data signals. Additionally or alternatively, at least one upstream signal interface may be configured as input signal interface receiving input signals, in particular one or a combination of video, image, sound or data signals from an external source.
  • output signal interface providing output signals, in particular data signals, in particular KVM (Keyboard Video Mouse) data signals.
  • KVM Keyboard Video Mouse
  • at least one upstream signal interface may be configured as input signal interface receiving input signals, in particular one or a combination of video, image, sound or data signals from an external source.
  • the display device may be configured such that at least one of the at least two upstream signal interfaces is a signal interface for combined exchange of output signals and input signals of the kind explained above.
  • the display device is configured to automatically detect a connection to one or more external devices on at least one of the upstream signal interfaces and to automatically switch the upstream signals to one or more of the upstream signal interfaces depending on the received input signals and/or depending on a detection of a connection to one or more external devices on at least one of the upstream signal interfaces.
  • the display device is configured to automatically switch the upstream signals to one or more of the upstream signal interfaces at which a connection to one or more external devices is detected.
  • the display device provides triggering of an automated switching of the upstream signals to said interface at which one or more external devices are detected.
  • the display device is configured to automatically switch the upstream signals from a first upstream signal interface at which an external devices is connected to a second upstream signal interface, after a connection to one or more external devices at the second upstream signal interface has been detected. Therefore, manual switching of the upstream signal to the second upstream signal interface at which one or more external devices are connected is superfluous after connecting one or more external device to said second interface.
  • the upstream signal is provided to the most recently connected external devices via the corresponding upstream signal interface, automatically .
  • the at least two upstream signal interfaces comprise different interfaces, in particular a first interface according to the USB Type B Standard and a second interface according to the USB Type C Standard.
  • different upstream interface standards can be operated and used.
  • the USB Type B Standard allows data transmission.
  • the USB Type C Standard additionally to data transmission, also allows power supply and a video signal transmission between the display device and the external device. Therefore, the USB Type C Standard can work as an upstream interface for exchanging video signals and data signals in the form of input signals and output signals of the kinds mentioned above at the same time.
  • the display device is configured to receive input signals of at least two different types or standards, in particular first input signals according to the HDMI or DisplayPort Standard and second input signals according to the USB Type C Standard, in particular second input signals comprising DisplayPort over USB Type C.
  • different input interface standards can be operated and used.
  • an upstream signal interface according to USB Type C Standard further connections via input signal interfaces become superfluous.
  • an interface according to USB Type C Standard upstream signals comprising one or a combination of input signals and output signals can be transmitted (at the same time).
  • the display device is configured to memorize the last used type of input signals and to automatically switch to input signals of the last used type, in particular, if besides the input signals of the last used type also input signals of at least one different type are received at the same time. Therefore, manual switching of the input signal to the most recently used input signal interface becomes superfluous. Furthermore, the display device allows an automated switching of the input signal to the most recently used input signal interface. In an embodiment, the display device is configured to provide a user controlled swap function for swapping between input signals of at least two different types or standards and/or for swapping upstream signals between at least two upstream signal interfaces depending on the received input signals and/or depending on a detection of a connection to external devices on the at least two upstream signal interfaces. This allows a user to easily change or correct the automatic selection of signal interfaces.
  • the swap function is provided by a push-button actuation function, in particular actuation of a push-button over a predetermined time, for example 2 or more than 2 seconds.
  • a push-button actuation function in particular actuation of a push-button over a predetermined time, for example 2 or more than 2 seconds.
  • the display device is a computer monitor.
  • a method for switching upstream signals within a display device to an upstream signal interface of the display device comprises : receiving input signals from an input signal source connected to the display device via at least one input signal interface, providing upstream signals (for example depending on the input signals), automatically detecting a connection to one or more external devices on at least one of at least two upstream signal interfaces of the display device, and automatically switching the upstream signals to one or more of the upstream signal interfaces depending on the received input signals and/or depending on a detection of a connection to one or more external device on at least one of the upstream signal interfaces.
  • the method may be applied to a display device as it is described above.
  • Each upstream signal interface can be configured as input and/or output signal interface to receive and/or provide input and/or output signals of the kinds described above respectively.
  • upstream signals may comprise one or a combination of input signals and/or output signals of the kind explained above.
  • At least one upstream signal interface may be configured as output signal interface providing output signals, in particular data signals, in particular KVM (Keyboard Video Mouse) data signals.
  • KVM Keyboard Video Mouse
  • At least one upstream signal interface may be configured as input signal interface receiving input signals, in particular one or a combination of video, image, sound or data signals from an external source.
  • a further method additionally comprises automatically switching the upstream signals to one or more of the upstream signal interfaces at which a connection to one or more external devices is detected. Therefore, manual switching of the upstream signal to the upstream signal interface at which one or more external devices are connected is superfluous after connecting one or more external device to said interface .
  • a further method additionally comprises automatically switching the upstream signals from a first upstream signal interface at which an external devices is connected to a second upstream signal interface, after a connection to one or more external devices at the second upstream signal interface has been detected. Therefore, manual switching of the upstream signal to the second upstream signal interface at which one or more external devices are connected is superfluous after connecting one or more external devices to said second interface.
  • the upstream signal is provided to the most recently connected external devices via the corresponding upstream signal interface, automatically.
  • the at least two upstream signal interfaces comprise different interfaces, in particular a first interface according to the USB Type B Standard and a second interface according to the USB Type C Standard.
  • a further method additionally comprises receiving input signals of at least two different types or standards, in particular first input signals according to the HDMI or DisplayPort Standard and second input signals according to the USB Type C Standard, in particular second input signals comprising DisplayPort over USB Type C.
  • a further method additionally comprises memorizing the last used type of input signals and automatically switching to input signals of the last used type, in particular, if besides the input signals of the last used type also input signals of at least one different type are received at the same time. Therefore, manual switching of the input signal to the most recently used input signal interface becomes superfluous .
  • a further method additionally comprises providing a user controlled swap function for swapping between input signals of at least two different types or standards and/or for swapping upstream signals between at least two upstream signal interfaces depending on the received input signals and/or depending on a detection of a connection to external devices on the at least two upstream signal interfaces. This allows a user to easily change or correct the automatic selection of signal interfaces.
  • the swap function is provided by a push-button actuation function, in particular actuation of a push-button over a predetermined time, for example 2 or more than 2 seconds.
  • a push-button actuation function in particular actuation of a push-button over a predetermined time, for example 2 or more than 2 seconds.
  • the display device is a computer monitor.
  • several types of display devices such as TV screens, beamers, etc. can be used.
  • USB Type C standard interfaces which can support a display device or display or video signal transmission (kind of input signals), data transmission (kind of input and/or output signals) and power supply with only one cable
  • an intuitive operation mode for a user is described wherein the sources for a display signal and data transmission are switched automatically and the display signal and data transmission are switched automatically and more easily.
  • An automatic display signal detection mechanism and the characteristics of USB Type C standard technology are utilized to set or determine the proper priority or correct settings for a user scenario.
  • a smart and/or quick access button is available for a user to switch a display signal and a USB upstream port at the same time when two active sources are used simultaneously or alternately.
  • An exemplary display device comprises several ports for the connection of external devices.
  • a keyboard, a mouse and a headset can be connected to the display device via different ports.
  • Another port for example provides an interface for Ethernet connection.
  • Further ports provide interfaces for input signals via HDMI or DP technology, for upstream signals (data signals) via USB Type B standard technology and for upstream signals (data signals and/or video signals) via USB Type C technology.
  • Figure 1 Schematic illustration of an implicit KVM application for a DP/HDMI source
  • FIG. 2 Schematic illustration of an implicit KVM application for a USB Type C source
  • Figure 3a Schematic illustration of an implicit KVM application for a latest plugged source
  • Figure 3b Schematic illustration of an implicit KVM application for a different latest plugged source
  • FIG. 4 Schematic illustration of an implicit KVM one touch solution
  • FIG. 5 Switch flowchart of the KVM system.
  • Implicit KVM application for a DP/HDMI source In figure 1 a scenario is illustrated in which an external device 1A, in particular a notebook, is connected to the display device 2, which here exemplarily is a computer monitor.
  • the external device 1A is connected to the computer monitor 2 via an USB Type B interface 3 and a DP/HDMI interface 4.
  • the display device 2 will automatically switch to a USB Type B upstream port once it detects the USB Type B port is connected together with the active DP/HDMI input source.
  • Another port/interface 5 for USB Type C is not used in this scenario.
  • FIG 2 a scenario is illustrated in which an external device IB, for example a notebook, is connected to the computer monitor 2.
  • the external device IB is connected to the computer monitor 2 via an USB Type C interface 5.
  • the display device 2 will automatically switch to a USB Type C upstream port once it detects the USB Type C port is connected together with the active DP Altmode (alternative mode) signal via USB Type C connection.
  • the other port/interface 4 (see explanations to figure 1 above) is not used in this scenario.
  • Implicit KVM application for a latest plugged source
  • USB Type C upstream When an USB Type C upstream is currently active (see device IB on interface 5 in figure 3a) and a second electrical device 1A gets plugged to the USB Type B upstream port, the display device 2 will automatically switch to the USB Type B upstream interface 3 connected to device 1A and optionally to the DP/HDMI interface 4 also connected to device 1A as demonstrated in figure 3a.
  • USB Type B upstream when a USB Type B upstream is currently active (see device 1A on interface 3 in figure 3b), optionally together with the DP/HDMI interface 4 also connected to device 1A as demonstrated in figure 3a, and a second electrical device IB gets plugged to the USB Type C upstream port, the display device 2 will automatically switch to the USB Type C upstream interface 5 connected to device IB, optionally together with the active DP Altmode (alternative mode) signal via USB Type C connection as demonstrated in figure 3b.
  • DP/HDMI interface 4 also connected to device 1A as demonstrated in figure 3a
  • the display device 2 will automatically switch to the USB Type C upstream interface 5 connected to device IB, optionally together with the active DP Altmode (alternative mode) signal via USB Type C connection as demonstrated in figure 3b.
  • Table 1 below shows the possible scenarios for combinations of USB Cable (upstream) and current input connections.
  • the display device 2 When, for example, a HDMI/DP input signal is currently active and a second electrical device IB gets plugged to the USB Type C port, the display device 2 will automatically switch to the USB Type C input signal and choose the USB Type C interface for data upstream.
  • the display device 2 After the display device 2 has exemplarily switched from a combined USB Type B interface 3 and DP/HDMI interface 4 connection to a USB Type C interface 5 connection or vice versa, the display device 2 in one exemplary implementation memorizes the latest user preferred input source, here for example the DP/HDMI source. Once there are two different active KVM sources alive (USB Type C with integrated DP Altmode signal and USB Type B with DP/HDMI signal), the user can easily switch between the different systems by pressing a button "Swap inputs". The display device 2 will then automatically switch the input signal source and the KVM upstream source.
  • the connected external devices are a notebook (via USB Type C connection) and an external hard drive (via USB Type B and DP/HDMI connection).
  • USB Type B respectively DP/HDMI and USB Type C
  • user can quickly execute the "Swap Inputs" function to switch the input ports of the display signal and/or the USB upstream interfaces by pressing said button for 2 seconds, for example.
  • Table 2 shows the current input and following input source when pressing the "Swap inputs" button in different scenarios .
  • Table 2 shows the current input and following input source when pressing the "Swap inputs" button in different scenarios .
  • the "Swap inputs" function is for example only available when at least two USB upstream connections are active or available.
  • the KVM system remembers the previous input source when "Swap inputs" is triggered. Thus, the system only swaps between the two mentioned input sources.
  • the flowchart in figure 5 shows possible switching scenarios of the present example.
  • the KVM system checks, whether a USB cable is connected to a port. If no USB connection is detected, the system continues checking.
  • the system detects the type of USB connection.
  • USB upstream port USB-B
  • USB-C USB-C
  • USB upstream port USB-B
  • USB-C USB-C
  • USB upstream port USB-B

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Computer Hardware Design (AREA)
  • General Physics & Mathematics (AREA)
  • Theoretical Computer Science (AREA)
  • Controls And Circuits For Display Device (AREA)

Abstract

L'invention concerne un dispositif d'affichage et un procédé correspondant mis en œuvre pour recevoir des signaux d'entrée d'une source de signal d'entrée connectée au dispositif d'affichage par l'intermédiaire d'au moins une interface de signal d'entrée, fournir des signaux amont en fonction des signaux d'entrée, détecter automatiquement une connexion à un ou plusieurs dispositifs externes sur au moins l'une d'au moins deux interfaces de signal amont du dispositif d'affichage, et commuter automatiquement les signaux amont vers une ou plusieurs des interfaces de signaux amont en fonction des signaux d'entrée reçus et/ou en fonction d'une détection d'une connexion à un ou plusieurs dispositifs externes sur au moins l'une des interfaces de signaux amont.
EP20797706.7A 2019-11-05 2020-10-23 Dispositif d'affichage et son procédé d'émission de signaux Pending EP4055462A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102019129786 2019-11-05
PCT/EP2020/079912 WO2021089344A1 (fr) 2019-11-05 2020-10-23 Dispositif d'affichage et son procédé d'émission de signaux

Publications (1)

Publication Number Publication Date
EP4055462A1 true EP4055462A1 (fr) 2022-09-14

Family

ID=73030094

Family Applications (1)

Application Number Title Priority Date Filing Date
EP20797706.7A Pending EP4055462A1 (fr) 2019-11-05 2020-10-23 Dispositif d'affichage et son procédé d'émission de signaux

Country Status (3)

Country Link
EP (1) EP4055462A1 (fr)
JP (1) JP2023500122A (fr)
WO (1) WO2021089344A1 (fr)

Citations (2)

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US20150113181A1 (en) * 2013-10-18 2015-04-23 Dell Products, Lp Seamless Switching of USB Devices Connected to a Monitor Hub
US20160005378A1 (en) * 2013-03-04 2016-01-07 Masatoshi Abe Display device and display method

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Publication number Priority date Publication date Assignee Title
US20070241990A1 (en) * 2006-04-14 2007-10-18 Smith Douglas L Method for automatically switching video sources to a display device
EP2252923A4 (fr) * 2008-03-08 2013-06-05 Hewlett Packard Co Moniteur informatique à commutateur kvm intégré
US20100161871A1 (en) * 2008-12-22 2010-06-24 Musa Ibrahim Kakish Computer
US20100180055A1 (en) * 2009-01-13 2010-07-15 Lyon Geoff M Monitor sharing system
US20120083208A1 (en) * 2010-09-30 2012-04-05 Apple Inc. Wireless accessory device pairing transfer between multiple host devices
KR20160032838A (ko) * 2014-09-17 2016-03-25 박상민 다중 모니터 제어 시스템

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20160005378A1 (en) * 2013-03-04 2016-01-07 Masatoshi Abe Display device and display method
US20150113181A1 (en) * 2013-10-18 2015-04-23 Dell Products, Lp Seamless Switching of USB Devices Connected to a Monitor Hub

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See also references of WO2021089344A1 *

Also Published As

Publication number Publication date
WO2021089344A1 (fr) 2021-05-14
JP2023500122A (ja) 2023-01-04

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