IP Library › Granted Patent US 8,848,008
Granted Patent B2
US 8,848,008 · App. 13/413,283 · Granted Sep 30, 2014

System and method for providing a multi-mode embedded display

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Quick Facts
Patent No.
US 8,848,008
App. No.
13/413,283
Granted
Sep 30, 2014
Kind
B2
Abstract

An information handling system includes a display panel, a panel connector, and a source device. The display panel displays images at different resolutions. The enables display data signals to be sent to the display panel. The source device determines whether an auxiliary channel is present between the source device and the panel connector, operates in a first embedded display operation mode if the auxiliary channel is present, otherwise determines if an enable signal has been received, and operates in a second embedded display operation mode when the enable signal has been received. The source device also communicates the display data signals to the display panel through the panel connector via a same set of pins of the source device during both the first embedded display operation mode and the second embedded display operation mode.

Claims (42)

1. An information handling system comprising:

a display panel to display images at different resolutions;

a panel connector in communication with the display panel, the panel connector to enable display data signals to be sent to the display panel; and

a source device in communication with the panel connector, the source device to determine whether an auxiliary channel is present between the source device and the panel connector, to operate in a first embedded display operation mode if the auxiliary channel is present, otherwise to determine if an enable signal has been received, and to operate in a second embedded display operation mode when the enable signal has been received, wherein the source device communicates the display data signals to the display panel through the panel connector via a same set of pins of the source device during both the first embedded display operation mode and the second embedded display operation mode.

2. The information handling system of claim 1 further comprising:

a level shifter in communication with the source device and the panel connector, the level shifter to boost a voltage of the display data signals from the source device from a swing around zero volts to have a desired top direct current voltage prior to providing the display data signals to the panel connector.

3. The information handling system of claim 1 wherein the source device maps a digital serial interface data channel to a first embedded DisplayPort main link lane of the source device in response to the second embedded display operation mode, and the source device maps a digital serial interface clock signal to a second embedded DisplayPort main link lane of the source device in response to the second embedded display operation mode.

4. The information handling system of claim 1 wherein the first embedded display operation mode is an embedded DisplayPort operational mode, and the second embedded display operation mode is a mobile industry portable interface operation mode.

5. The information handling system of claim 1 wherein the display panel is selected from a group consisting of an embedded DisplayPort display panel and a mobile industry portable interface display panel.

6. The information handling system of claim 1 wherein the enable signal is received on a link that is reserved in the first embedded display operational mode.

7. A method comprising:

determining, at a source device, whether a hot plug detect signal is received from a panel connector;

attempting to complete an auxiliary channel communication when the hot plug detect signal is received;

operating the source device in a first embedded display operation mode when the auxiliary channel communication is completed;

determining whether an enable signal is received from the panel connector when the hot plug detect signal is not received or when the auxiliary channel communication is not completed; and

operating the source device in a second embedded display operation mode when the enable signal is received, wherein the source device communicates display data signals to a display panel via a same set of pins of the source device during both the first embedded display operation mode and the second embedded display operation mode.

8. The method of claim 7 further comprising:

boosting, via a level shifter, a voltage of the display data signals from the source device from a swing around zero volts to have a desired top direct current voltage prior to providing the display data signals to the panel connector.

9. The method of claim 7 further comprising:

mapping a digital serial interface data channel to a first embedded DisplayPort main link lane of the source device in response to the second embedded display operation mode; and

mapping a digital serial interface clock signal to a second embedded DisplayPort main link lane of the source device in response to the second embedded display operation mode.

10. The method of claim 7 wherein the enable signal is received on a link that is reserved in the first embedded display operational mode.

11. The method of claim 7 wherein the first embedded display operation mode is an embedded DisplayPort operational mode, and the second embedded display operation mode is a mobile industry portable interface operation mode.

12. The method of claim 7 wherein the enable signal is received on a link that is reserved in the first embedded display operational mode.

13. The method of claim 7 wherein the display panel is selected from a group consisting of an embedded DisplayPort display panel and a mobile industry portable interface display panel.

14. An information handling system comprising:

a memory; and

a processor to execute instructions stored in the memory to cause the processor to at least:

determine, at a source device, whether a hot plug detect signal is received from a panel connector;

attempt to complete an auxiliary channel communication when the hot plug detect signal is received;

operate the source device in a first embedded display operation mode when the auxiliary channel communication is completed;

determine whether an enable signal is received from the panel connector when the hot plug detect signal is not received or when the auxiliary channel communication is not completed; and

operate the source device in a second embedded display operation mode when the enable signal is received, wherein the source device communicates display data signals to a display panel via a same set of pins of the source device during both the first embedded display operation mode and the second embedded display operation mode.

15. The information handling system of claim 14 wherein the instructions further cause the processor to:

boost, via a level shifter, a voltage of the display data signals from the source device from a swing around zero volts to have a desired top direct current voltage prior to providing the display data signals to the panel connector.

16. The information handling system of claim 14 wherein the instructions further cause the processor to:

map a digital serial interface data channel to a first embedded DisplayPort main link lane of the source device in response to the second embedded display operation mode; and

map a digital serial interface clock signal to a second embedded DisplayPort main link lane of the source device in response to the second embedded display operation mode.

17. The information handling system of claim 14 wherein the enable signal is received on a link that is reserved in the first embedded display operational mode.

18. The information handling system of claim 14 wherein the first embedded display operation mode is an embedded DisplayPort operational mode, and the second embedded display operation mode is a mobile industry portable interface operation mode.

19. The information handling system of claim 14 wherein the enable signal is received on a link that is reserved in the first embedded display operational mode.

20. The information handling system of claim 14 wherein the display panel is selected from a group consisting of an embedded DisplayPort display panel and a mobile industry portable interface display panel.

Assignments (15)
RELEASE OF SECURITY INTEREST IN PATENTS PREVIOUSLY RECORDED AT REEL/FRAME (053546/0001) Recorded Jun 23, 2022
From: THE BANK OF NEW YORK MELLON TRUST COMPANY, N.A., AS NOTES COLLATERAL AGENT
To: DELL MARKETING L.P. (ON BEHALF OF ITSELF AND AS SUCCESSOR-IN-INTEREST TO CREDANT TECHNOLOGIES, INC.); DELL INTERNATIONAL L.L.C.; DELL PRODUCTS L.P.; DELL USA L.P.; EMC CORPORATION; DELL MARKETING CORPORATION (SUCCESSOR-IN-INTEREST TO FORCE10 NETWORKS, INC. AND WYSE TECHNOLOGY L.L.C.); EMC IP HOLDING COMPANY LLC
Reel/Frame 071642/0001 →
RELEASE OF SECURITY INTEREST IN PATENTS PREVIOUSLY RECORDED AT REEL/FRAME (045455/0001) Recorded May 20, 2022
From: THE BANK OF NEW YORK MELLON TRUST COMPANY, N.A., AS NOTES COLLATERAL AGENT
To: DELL MARKETING CORPORATION (SUCCESSOR-IN-INTEREST TO ASAP SOFTWARE EXPRESS, INC.); DELL MARKETING L.P. (ON BEHALF OF ITSELF AND AS SUCCESSOR-IN-INTEREST TO CREDANT TECHNOLOGIES, INC.); DELL USA L.P.; DELL INTERNATIONAL L.L.C.; DELL PRODUCTS L.P.; DELL MARKETING CORPORATION (SUCCESSOR-IN-INTEREST TO FORCE10 NETWORKS, INC. AND WYSE TECHNOLOGY L.L.C.); EMC CORPORATION (ON BEHALF OF ITSELF AND AS SUCCESSOR-IN-INTEREST TO MAGINATICS LLC); EMC IP HOLDING COMPANY LLC (ON BEHALF OF ITSELF AND AS SUCCESSOR-IN-INTEREST TO MOZY, INC.); SCALEIO LLC
Reel/Frame 061753/0001 →
RELEASE OF SECURITY INTEREST IN PATENTS PREVIOUSLY RECORDED AT REEL/FRAME (040136/0001) Recorded Apr 26, 2022
From: THE BANK OF NEW YORK MELLON TRUST COMPANY, N.A., AS NOTES COLLATERAL AGENT
To: DELL MARKETING CORPORATION (SUCCESSOR-IN-INTEREST TO ASAP SOFTWARE EXPRESS, INC.); DELL MARKETING L.P. (ON BEHALF OF ITSELF AND AS SUCCESSOR-IN-INTEREST TO CREDANT TECHNOLOGIES, INC.); DELL USA L.P.; DELL INTERNATIONAL L.L.C.; DELL PRODUCTS L.P.; DELL MARKETING CORPORATION (SUCCESSOR-IN-INTEREST TO FORCE10 NETWORKS, INC. AND WYSE TECHNOLOGY L.L.C.); EMC CORPORATION (ON BEHALF OF ITSELF AND AS SUCCESSOR-IN-INTEREST TO MAGINATICS LLC); EMC IP HOLDING COMPANY LLC (ON BEHALF OF ITSELF AND AS SUCCESSOR-IN-INTEREST TO MOZY, INC.); SCALEIO LLC
Reel/Frame 061324/0001 →
RELEASE OF SECURITY INTEREST Recorded Nov 3, 2021
From: CREDIT SUISSE AG, CAYMAN ISLANDS BRANCH
To: DELL USA L.P.; ASAP SOFTWARE EXPRESS, INC.; AVENTAIL LLC; CREDANT TECHNOLOGIES, INC.; DELL INTERNATIONAL, L.L.C.; DELL MARKETING L.P.; DELL PRODUCTS L.P.; DELL SOFTWARE INC.; DELL SYSTEMS CORPORATION; EMC CORPORATION; EMC IP HOLDING COMPANY LLC; FORCE10 NETWORKS, INC.; MAGINATICS LLC; MOZY, INC.; SCALEIO LLC; WYSE TECHNOLOGY L.L.C.
Reel/Frame 058216/0001 →
SECURITY AGREEMENT Recorded Apr 22, 2020
From: CREDANT TECHNOLOGIES INC.; DELL INTERNATIONAL L.L.C.; DELL MARKETING L.P.; DELL PRODUCTS L.P.; DELL USA L.P.; EMC CORPORATION; FORCE10 NETWORKS, INC.; WYSE TECHNOLOGY L.L.C.; EMC IP HOLDING COMPANY LLC
To: THE BANK OF NEW YORK MELLON TRUST COMPANY, N.A.
Reel/Frame 053546/0001 →
SECURITY AGREEMENT Recorded Mar 21, 2019
From: CREDANT TECHNOLOGIES, INC.; DELL INTERNATIONAL L.L.C.; DELL MARKETING L.P.; DELL PRODUCTS L.P.; DELL USA L.P.; EMC CORPORATION; FORCE10 NETWORKS, INC.; WYSE TECHNOLOGY L.L.C.; EMC IP HOLDING COMPANY LLC
To: THE BANK OF NEW YORK MELLON TRUST COMPANY, N.A.
Reel/Frame 049452/0223 →
SECURITY AGREEMENT Recorded Sep 21, 2016
From: ASAP SOFTWARE EXPRESS, INC.; AVENTAIL LLC; CREDANT TECHNOLOGIES, INC.; DELL USA L.P.; DELL INTERNATIONAL L.L.C.; DELL MARKETING L.P.; DELL PRODUCTS L.P.; DELL SOFTWARE INC.; DELL SYSTEMS CORPORATION; EMC CORPORATION; EMC IP HOLDING COMPANY LLC; FORCE10 NETWORKS, INC.; MAGINATICS LLC; MOZY, INC.; SCALEIO LLC; SPANNING CLOUD APPS LLC; WYSE TECHNOLOGY L.L.C.
To: CREDIT SUISSE AG, CAYMAN ISLANDS BRANCH, AS COLLATERAL AGENT
Reel/Frame 040134/0001 →
SECURITY AGREEMENT Recorded Sep 21, 2016
From: ASAP SOFTWARE EXPRESS, INC.; AVENTAIL LLC; CREDANT TECHNOLOGIES, INC.; DELL USA L.P.; DELL INTERNATIONAL L.L.C.; DELL MARKETING L.P.; DELL PRODUCTS L.P.; DELL SOFTWARE INC.; DELL SYSTEMS CORPORATION; EMC CORPORATION; EMC IP HOLDING COMPANY LLC; FORCE10 NETWORKS, INC.; MAGINATICS LLC; MOZY, INC.; SCALEIO LLC; SPANNING CLOUD APPS LLC; WYSE TECHNOLOGY L.L.C.
To: THE BANK OF NEW YORK MELLON TRUST COMPANY, N.A., AS NOTES COLLATERAL AGENT
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RELEASE OF REEL 034591 FRAME 0391 (TL) Recorded Sep 14, 2016
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RELEASE OF REEL 034590 FRAME 0731 (NOTE) Recorded Sep 14, 2016
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RELEASE OF REEL 034590 FRAME 0696 (ABL) Recorded Sep 13, 2016
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SUPPLEMENT TO PATENT SECURITY AGREEMENT (TERM LOAN) Recorded Dec 10, 2014
From: DELL PRODUCTS L.P.; DELL SOFTWARE INC.; FORCE10 NETWORKS, INC.; WYSE TECHNOLOGY L.L.C.
To: BANK OF AMERICA, N.A., AS COLLATERAL AGENT
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SUPPLEMENT TO PATENT SECURITY AGREEMENT (NOTES) Recorded Dec 10, 2014
From: DELL PRODUCTS L.P.; DELL SOFTWARE INC.; FORCE10 NETWORKS, INC.; WYSE TECHNOLOGY L.L.C.
To: THE BANK OF NEW YORK MELLON TRUST COMPANY, N.A., AS NOTES COLLATERAL AGENT
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SUPPLEMENT TO PATENT SECURITY AGREEMENT (ABL) Recorded Dec 10, 2014
From: DELL PRODUCTS L.P.; DELL SOFTWARE INC.; FORCE10 NETWORKS, INC.; WYSE TECHNOLOGY L.L.C.
To: BANK OF AMERICA, N.A., AS ADMINISTRATIVE AGENT
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ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Mar 13, 2012
From: MONTAG, BRUCE C.
To: DELL PRODUCTS, LP
Reel/Frame 027854/0190 →