Charging indication apparatus and method thereof

• US 9,293,933 B2
• Filed: 06/06/2014
• Issued: 03/22/2016
• Est. Priority Date: 01/08/2014
• Status: Active Grant

• Current Assignee: Acer, Inc.
• Original Assignee: Acer, Inc.
• Inventors: Li, Po-Yu, Juan, Kuan-Chi, Tsai, Meng-Chieh, Yin, Chih-Chieh
• Primary Examiner(s): Lau, Hoi
• Application Number:
  US14/297,653
• Publication Number:
  US 20150194037A1
• Time in Patent Office: 655 Days
• Field of Search: 340/636.2, 340/636.17, 340/14.67, 340/455, 320/103, 320/108, 345/211, 345/102
• US Class Current: 1/1
• CPC Class Codes: G09G 2330/021 Power management, e.g. power saving
• CPC Class Codes: G09G 3/3406 Control of illumination source illumination devices structurally associated with liquid crystal cells G02F1/1336
• CPC Class Codes: H02J 7/0048 Detection of remaining charge capacity or state of charge [SOC]

Abstract

A charging indication apparatus and a method thereof are provided. A switching signal for controlling an operation frequency of a power conversion circuit is divided to obtain a divided frequency signal, and according to the divided frequency signal, a backlight module is controlled to emit a backlight source serving as a charging indication signal.

Claims

1. A charging indication apparatus, suitable for an electronic apparatus, comprising:

a backlight module;

a frequency dividing unit, dividing a switching signal for controlling an operation frequency of a power conversion circuit to generate a divided frequency signal; and

a backlight controller, coupled to the backlight module and the frequency dividing unit and controlling the backlight module to emit a backlight source serving as a charging indication signal according to the divided frequency signal.

2. The charging indication apparatus according to claim 1, wherein

the backlight module comprises:

a plurality of light emitting diode (LED) units; and

the backlight controller comprises;

a driving unit, coupled to the LED units and driving the LED units to emit the backlight source; and

a plurality of switches, disposed on connection routes of the LED units being connected with the driving unit, wherein conduction states of the switches are controlled by the divided frequency signal.

3. The charging indication apparatus according to claim 2, wherein the divided frequency signal comprises a plurality of sub divided frequency signals, and the sub divided frequency signals respectively have different frequencies.

4. The charging indication apparatus according to claim 1, further comprising:

a liquid crystal display (LCD) panel; and

a timing sequence controller, coupled to the frequency dividing unit and the LCD panel and controlling the LCD panel to display a default view according to the divided frequency signal.

5. The charging indication apparatus according to claim 4, wherein the default view is a monochromatic view.

6. The charging indication apparatus according to claim 1, wherein the frequency dividing unit is a counter.

7. A charging indication method of a charging indication apparatus, suitable for an electronic apparatus, the method comprising:

dividing a switching signal for controlling an operation frequency of a power conversion circuit to generate a divided frequency signal; and

controlling a backlight module of the electronic apparatus to emit a backlight source serving as a charging indication signal according to the divided frequency signal.

8. The method according to claim 7, wherein the backlight module comprises a plurality of LED units, and the step of controlling the backlight module of the electronic apparatus to emit the backlight source according to the divided frequency signal comprises:

controlling the LED units to respectively emit in different emitting frequencies according to the divided frequency signal.

9. The method according to claim 7 wherein the backlight module comprises a plurality of LED units, and the step of controlling the backlight module of the electronic apparatus to emit the backlight source according to the divided frequency signal comprises:

controlling a portion of the LED units to emit according to the divided frequency signal.

10. The method according to claim 7, further comprising:

controlling an LCD panel of the electronic apparatus to display a default view according to the divided frequency signal.

11. The method according to claim 10, wherein the default view is a monochromatic view.