LCD module, portable electronic devices and displaying method thereof

• US 8,824,811 B2
• Filed: 03/06/2012
• Issued: 09/02/2014
• Est. Priority Date: 03/06/2012
• Status: Active Grant

• Current Assignee: HTC Corporation
• Original Assignee: HTC Corporation
• Inventors: Huang, Jih-Hsin, Peng, Hsi-Chieh, Lo, Cheng, Yeh, Hsi-Cheng
• Primary Examiner(s): Bayat, Ali
• Application Number:
  US13/413,415
• Publication Number:
  US 20130235054A1
• Time in Patent Office: 910 Days
• Field of Search: 382/232, 382/233, 382/236, 382245-246, 382/250, 382/251, 345/530, 345/545, 345/547
• US Class Current: 382/232
• CPC Class Codes: G09G 2330/022 in absence of operation, e.g. no data being entered during a predetermined time
• CPC Class Codes: G09G 2340/02 Handling of images in compressed format, e.g. JPEG, MPEG
• CPC Class Codes: G09G 2360/18 Use of a frame buffer in a display terminal, inclusive of the display panel
• 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 2370/08 Details of image data interface between the display device controller and the data line driver circuit
• 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

A portable electronic device is provided. The portable electronic device includes a processor for providing encoding data and an LCD module coupled to the processor. The processor includes an encoder for encoding a frame data to generate the encoding data. The LCD module includes a driver and an LCD coupled to the driver. The driver includes a decoder for decoding the encoding data to obtain an image data. The LCD displays the image data.

Claims

1. An LCD module, comprising:

a driver, comprising;

a control unit, receiving encoding data;

a storage unit coupled to the control unit, storing the encoding data; and

a decoder, decoding the encoding data to obtain an image data; and

an LCD coupled to the driver, displaying the image data,

wherein the encoding data is provided by an external processor, and

wherein the control unit further receives state information from the external processor before receiving the encoding data.

2. The LCD module as claimed in claim 1, wherein the control unit selectively transmits the encoding data to the storage unit or the decoder according to the state information.

3. The LCD module as claimed in claim 2, wherein when the state information indicates that the external processor is to enter an idle mode, the control unit transmits the encoding data to the storage unit for storage, and the decoder decodes the encoding data stored in the storage unit to obtain the image data.

4. The LCD module as claimed in claim 3, wherein when the state information indicates that the external processor is operating in a normal mode, the control unit transmits the encoding data to the decoder, and the decoder decodes the encoding data from the control unit to obtain the image data.

5. The LCD module as claimed in claim 1, wherein the storage unit is a random access memory (RAM).

6. A portable electronic device, comprising:

a processor, providing encoding data and comprising;

an encoder, encoding a frame data to generate the encoding data; and

an LCD module coupled to the processor, comprising;

a driver, comprising;

a control unit, receiving the encoding data;

a storage unit coupled to the control unit, storing the encoding data; and

a decoder, decoding the encoding data to obtain an image data; and

an LCD coupled to the driver, displaying the image data,

wherein the control unit further receives state information from the processor before receiving the encoding data.

7. The portable electronic device as claimed in claim 6, wherein the control unit selectively transmits the encoding data to the storage unit or the decoder according to the state information.

8. The portable electronic device as claimed in claim 7, wherein when the state information indicates that the processor is to enter an idle mode, the control unit transmits the encoding data to the storage unit for storage, and the decoder decodes the encoding data stored in the storage unit to obtain the image data.

9. The portable electronic device as claimed in claim 8, wherein when the state information indicates that the external processor is operating in a normal mode, the control unit transmits the encoding data to the decoder, and the decoder decodes the encoding data from the control unit to obtain the image data.

10. The portable electronic device as claimed in claim 6, wherein the storage unit is a random access memory (RAM).

11. A displaying method, comprising:

encoding a frame data stored in a first storage unit to provide encoding data by a processor;

obtaining the encoding data by an LCD module;

storing the encoding data to a second storage unit of the LCD module;

obtaining state information from the processor;

decoding the encoding data stored in the second storage unit by a driver of the LCD module, to obtain an image data when the state information indicates that the processor is to enter an idle mode; and

displaying the image data on an LCD of the LCD module,

wherein the processor enters the idle mode after the encoding data is stored in the second storage unit.

12. The displaying method as claimed in claim 11, wherein a storage capacity of the second storage unit is smaller than a storage capacity of the first storage capacity.

13. The displaying method as claimed in claim 11, wherein the processor and the LCD module are implemented in a portable electronic device, and the second storage unit is a random access memory (RAM).