Charge level display method and apparatus for a battery of an electronic device

• US 5,477,129 A
• Filed: 11/22/1993
• Issued: 12/19/1995
• Est. Priority Date: 11/22/1993
• Status: Expired due to Term

• Current Assignee: NCR Corporation
• Original Assignee: NCR Corporation
• Inventors: Myslinski, Theodore A.
• Primary Examiner(s): Wong, Peter S.
• Assistant Examiner(s): NAPPI, ROBERT E
• Application Number:
  US08/155,662
• Time in Patent Office: 757 Days
• Field of Search: 320/2, 320/43, 320/44, 320/48, 340/636, 324/425, 324/426, 324/427, 324/435
• US Class Current: 340/636.1
• CPC Class Codes: G01R 31/3648 comprising digital calculation means, e.g. for performing an algorithm
• CPC Class Codes: G06F 1/1616 with folding flat displays, e.g. laptop computers or notebooks having a clamshell configuration, with body parts pivoting to an open position around an axis parallel to the plane they define in closed position
• CPC Class Codes: G06F 1/165 the additional display being small, e.g. for presenting status information
• CPC Class Codes: H02J 7/0042 characterised by the mechanical construction
• CPC Class Codes: H02J 7/0048 Detection of remaining charge capacity or state of charge [SOC]
• CPC Class Codes: Y10S 320/21 State of charge of battery

Abstract

A portable computer is positionable between an open condition in which an input device and an output device thereof is exposed to a user of the portable computer, and a closed condition in which the input device and the output device is protectively stowed within the portable computer, and further with the portable computer having an "on" state of operation and an "off" state of operation. The portable computer includes a battery, and a display for indicating charge levels of the battery, wherein the display is visible to the user in the open condition and in the closed condition. The portable computer further includes a mechanism for operating the display when the portable computer is in the "on" state of operation and in the "off" state of operation. Moreover, the display is operated to continuously indicate charge levels during the entire "on" state of operation as well as during the entire "off" state of operation.

Claims

1. A portable computer which is positionable between an open condition in which an input device and an output device are exposed to a user of the portable computer, and a closed condition in which the input device and the output device is protectively stowed within the portable computer, and with the portable computer having an "on" state of operation and an "off" state of operation, comprising:

a battery;

a display for indicating charge levels of said battery, wherein said display is visible to the user in the open condition and in the closed condition; and

means for operating said display when the portable computer is in the "on" state of operation and in the "off" state of operation, wherein said operating means comprises a circuit which polls said battery, recurring at a regular interval of time, during the "off" state of operation of the portable computer in order to determine charge levels of said battery.

2. The portable computer of claim 1, wherein said display continuously indicates charge levels during the entire "off" state of operation.

3. The portable computer of claim 2, wherein said battery is discharging when the portable computer is in the "off" state of operation.

4. A portable computer having an "on" state of operation and an "off" state of operation, comprising:

a battery;

a display for indicating charge levels of said battery; and

means for operating said display when the portable computer is in the "on" state of operation and in the "off" state of operation,

wherein said display continuously indicates the charge levels during the entire "off" state of operation of the portable computer, and

wherein said operating means comprises a circuit which polls said battery, recurring at a regular interval of time, during the "off" state of operation of the portable computer in order to determine the charge levels of said battery.

5. The portable computer of claim 4, further comprising an input device and an output device, wherein the portable computer is positionable between an open condition in which the input device and the output device are exposed to a user of the portable computer, and a closed condition in which the input device and the output device is protectively stowed within the portable computer, and further wherein said display is visible to the user when the portable computer is positioned in the open condition and in the closed condition.

6. The portable computer of claim 4, wherein the battery is discharging when the portable computer is in the "off" state of operation.

7. A method for displaying a charge level of a battery which is coupled to an electronic device to power operation of the electronic device, comprising the steps of:

displaying the charge level of the battery when the electronic device is in an "on" state of operation; and

displaying the charge level of the battery when the electronic device is in an "off" state of operation, wherein the "off" state displaying step comprises the step of displaying the charge level of the battery during the entire "off" state of operation of the electronic device,

wherein the "off" state displaying step further comprises the step of polling the battery, which recurs at a regular interval of time, during the "off" state of operation of the electronic device in order to determine the charge level of the battery.

8. The method of claim 7, wherein the electronic device is a portable computer which has an input device and an output device, and wherein the portable computer is positionable between an open condition in which the input device and the output device are exposed to a user of the portable computer, and a closed condition in which the input device and the output device is protectively stowed within the portable computer, and further wherein said display is visible to the user when the portable computer is positioned in the open condition and in the closed condition.

9. The method of claim 7, wherein the "off" state displaying step occurs during battery discharging.

10. A battery charge level indicator that displays a charge level of a battery which is coupled to an electronic device to power operation of the electronic device, comprising:

a display for indicating the charge level of the battery; and

means for operating said display when the electronic device is in an "on" state of operation and in an "off" state of operation, wherein said operating means comprises a microprocessor which polls said battery, recurring at a regular interval of time, during the "off" state of operation of the electronic device in order to determine the charge level of said battery.

11. The battery charge level indicator of claim 10, wherein the electronic device is a portable computer which has an input device and an output device, and wherein the portable computer is positionable between an open condition in which the input device and the output device are exposed to a user of the portable computer, and a closed condition in which the input device and the output device is protectively stowed within the portable computer, and further wherein said display is visible to the user when the portable computer is positioned in the open condition and in the closed condition.

12. The battery charge level indicator of claim 10, wherein the display continuously indicates the charge level during the entire "off" state of operation.

13. The battery charge level indicator of claim 12, wherein the battery is discharging when said device is in the "off" state of operation.