Variable battery power output for high resolution display panels

• US 10,444,815 B1
• Filed: 09/18/2018
• Issued: 10/15/2019
• Est. Priority Date: 09/18/2018
• Status: Active Grant

• Current Assignee: Dell Products LP (Dell Technologies Inc.)
• Original Assignee: Dell Products LP (Dell Technologies Inc.)
• Inventors: Sultenfuss, Andrew Thomas, Thompson, Richard Christopher
• Primary Examiner(s): Liang, Dong Hui
• Application Number:
  US16/134,457
• Time in Patent Office: 392 Days
• CPC Class Codes: G02F 1/133611 including means for improving the brightness uniformity
• CPC Class Codes: G06F 1/1635 Details related to the integration of battery packs and other power supplies such as fuel cells or integrated AC adapter
• CPC Class Codes: G06F 1/263 Arrangements for using multiple switchable power supplies, e.g. battery and AC G06F1/30 takes precedence
• CPC Class Codes: G06F 1/3218 of display devices
• CPC Class Codes: G06F 1/3296 by lowering the supply or operating voltage
• CPC Class Codes: G09G 2320/0626 for control of overall brightness
• CPC Class Codes: G09G 2330/02 Details of power systems and of start or stop of display operation
• CPC Class Codes: G09G 2330/021 Power management, e.g. power saving
• CPC Class Codes: G09G 2330/028 Generation of voltages supplied to electrode drivers in a matrix display other than LCD
• CPC Class Codes: G09G 2370/04 Exchange of auxiliary data, i.e. other than image data, between monitor and graphics controller
• CPC Class Codes: G09G 2370/042 for monitor identification
• CPC Class Codes: G09G 3/20 for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
• CPC Class Codes: G09G 3/36 using liquid crystals
• CPC Class Codes: G09G 5/006 Details of the interface to the display terminal specific for a display terminal using a CRT G09G1/167; using a flat panel G09G3/2096; circuits for interfacing with colour displays G09G5/04

Abstract

Systems and methods for supplying electrical power to a display device of an information handling system (IHS) include obtaining characteristics of the display device, including device type, obtaining characteristics of an internal battery of the IHS, including native output voltage, and selecting, based on the obtained characteristics, DC power output by the internal battery (when the display is a standard or HD display) or a DC power output of an external boost control structure coupled to the IHS (when the display is a UHD or QHD display) as the electrical power to be supplied to the display device. The external boost control structure may boost the native voltage of the DC power output by the internal battery to a higher voltage. Electrical power from the selected source is supplied to the display device and electrical power from the internal battery is supplied to other components of the IHS.

Claims

1. An information handling system, comprising:

a display device;

an internal battery;

an interface through which an external boost control structure is coupled to the information handling system;

a processor; and

a non-transitory computer readable memory media storing instructions executable by the processor for;

obtaining first information indicating one or more characteristics of the display device, the first information including a type of the display device;

obtaining second information indicating one or more characteristics of the internal battery, the second information including a native voltage of direct current (DC) power output by the internal battery;

selecting, based on the first and second information, a source of electrical power to be supplied to the display device, the selecting including;

selecting the DC power output by the internal battery as the electrical power to be supplied to the display device;

or

selecting a DC power output of the external boost control structure as the electrical power to be supplied to the display device, the DC power output of the external boost control structure being supplied at a higher voltage than the native voltage of the DC power output by the internal battery;

initiating the supply of electrical power from the selected source of electrical power to the display device; and

initiating the supply of electrical power from the internal battery to one or more components of the information handling system other than the display device.

2. The information handling system of claim 1, wherein the external boost control structure is removably coupled to the information handling system.

3. The information handling system of claim 1, wherein the external boost control structure is implemented in an external charger that further comprises circuitry for charging the internal battery.

4. The information handling system of claim 1, wherein to supply the DC power output at a higher voltage than the native voltage of the DC power output by the internal battery, the external boost control structure is configured to receive electrical power from the internal battery at the native voltage and boost the voltage of the received electrical power to the higher voltage.

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

the type of the display device is an ultra-high-definition liquid crystal display (LCD) device or a quad-high-definition LCD display device; and

selecting the source of electrical power to be supplied to the display device comprises selecting the DC power output of the external boost control structure as the electrical power to be supplied to the display device.

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

the type of the display device is a standard-definition liquid crystal display (LCD) device or a high-definition LCD display device; and

selecting the source of electrical power to be supplied to the display device comprises selecting the DC power output by the internal battery as the electrical power to be supplied to the display device.

7. The information handling system of claim 1, wherein the instructions are further executable by the processor for:

determining, based on the first and second information, the higher voltage at which the DC power output of the external boost control structure is supplied to the display device.

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

the higher voltage at which the DC power output of the external boost control structure is supplied to the display device is lower than an operating voltage of the display device; and

the display device comprises an internal boost structure configured to boost the higher voltage at which the DC power output of the external boost control structure is supplied to the display device to the operating voltage of the display device.

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

the second information further includes at least one of a battery temperature, a battery state, number of cells, a battery topology, a battery state-of-charge, a battery state of health, a battery age, and a battery size; and

the first information further includes at least one of a display panel type, a display panel operation state, a backlight setting, a brightness setting, a resolution setting, and a number of display panels.

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

the information handling system further comprises a data store; and

at least some of the first information and the second information is obtained from the data store.

11. A method for supplying electrical power to a display device of an information handling system, comprising:

obtaining first information indicating one or more characteristics of the display device, the first information including a type of the display device;

obtaining second information indicating one or more characteristics of an internal battery of the information handling system, the second information including a native voltage of direct current (DC) power output by the internal battery;

selecting, based on the first and second information, a source of electrical power to be supplied to the display device, the selecting including;

selecting the DC power output by the internal battery as the electrical power to be supplied to the display device;

or

selecting a DC power output of an external boost control structure coupled to the information handling system as the electrical power to be supplied to the display device, the DC power output of the external boost control structure being at a higher voltage than the native voltage of the DC power output by the internal battery;

supplying electrical power from the selected source of electrical power to the display device; and

supplying electrical power from the internal battery to one or more components of the information handling system other than the display device.

12. The method of claim 11, further comprising:

receiving, by the external boost control structure from the internal battery, DC power at the native voltage of the DC power output by the internal battery; and

boosting, by the external boost control structure, the native voltage of the DC power output by the internal battery to the higher voltage.

13. The method of claim 11, wherein:

the type of the display device is an ultra-high-definition liquid crystal display (LCD) device or a quad-high-definition LCD display device; and

selecting the source of electrical power to be supplied to the display device comprises selecting the DC power output of the external boost control structure as the electrical power to be supplied to the display device.

14. The method of claim 11, wherein:

the type of the display device is a standard-definition liquid crystal display (LCD) device or a high-definition LCD display device; and

selecting the source of electrical power to be supplied to the display device comprises selecting the DC power output by the internal battery as the electrical power to be supplied to the display device.

15. The method of claim 11, further comprising:

determining, based on the first and second information, the higher voltage at which the DC power output of the external boost control structure is supplied to the display device.

16. The method of claim 11, wherein:

the higher voltage at which the DC power output of the external boost control structure is supplied to the display device is lower than an operating voltage of the display device; and

the method further comprises boosting the higher voltage at which the DC power output of the external boost control structure is supplied to the display device to the operating voltage of the display device.

17. The method of claim 11, wherein at least some of the first information or the second information is obtained from a data store of the information handling system.

18. A non-transitory computer readable memory media storing instructions executable by a processor for:

obtaining first information indicating one or more characteristics of a display device of an information handling system, the first information including a type of the display device;

obtaining second information indicating one or more characteristics of an internal battery of the information handling system, the second information including a native voltage of direct current (DC) power output by the internal battery;

selecting, based on the first and second information, a source of electrical power to be supplied to the display device, the selecting including;

selecting the DC power output by the internal battery as the electrical power to be supplied to the display device;

or

selecting a DC power output of an external boost control structure coupled to the information handling system as the electrical power to be supplied to the display device, the DC power output of the external boost control structure being at a higher voltage than the native voltage of the DC power output by the internal battery;

initiating the supply of electrical power from the selected source of electrical power to the display device; and

initiating the supply of electrical power from the internal battery to one or more components of the information handling system other than the display device.

19. The non-transitory computer readable memory media of claim 18, wherein:

when the type of the display device is an ultra-high-definition liquid crystal display (LCD) device or a quad-high-definition LCD display device, selecting the source of electrical power to be supplied to the display device comprises selecting the DC power output of the external boost control structure as the electrical power to be supplied to the display device; and

when the type of the display device is a standard-definition liquid crystal display (LCD) device or a high-definition LCD display device, selecting the source of electrical power to be supplied to the display device comprises selecting the DC power output by the internal battery as the electrical power to be supplied to the display device.

20. The non-transitory computer readable memory media of claim 18, wherein the instructions are further executable by the processor for:

determining, based on the first and second information, the higher voltage at which the DC power output of the external boost control structure is supplied to the display device.