Image display device in digital TV

• US 7,839,452 B2
• Filed: 04/18/2007
• Issued: 11/23/2010
• Est. Priority Date: 08/08/2000
• Status: Expired due to Term

• Current Assignee: LG Electronics, Inc. (LG Corporation)
• Original Assignee: LG Electronics, Inc. (LG Corporation)
• Inventors: Choi, Seung Jong
• Primary Examiner(s): Natnael; Paulos M
• Application Number:
  US11/785,524
• Publication Number:
  US 20070247552A1
• Time in Patent Office: 1,315 Days
• Field of Search: 348/569, 348/555, 348563-565, 348/667, 348/441, 348/458, 348/459, 710/70, 710/68, 375/240.1, 375/240.12, 382/248, 382/218, 382/233
• US Class Current: 348/441
• CPC Class Codes: G06T 3/40 Scaling of whole images or parts thereof, e.g. expanding or contracting
• CPC Class Codes: G09G 2340/02 Handling of images in compressed format, e.g. JPEG, MPEG
• CPC Class Codes: G09G 2340/125 wherein one of the images is motion video
• CPC Class Codes: G09G 2360/02 Graphics controller able to handle multiple formats, e.g. input or output formats
• CPC Class Codes: G09G 5/005 Adapting incoming signals to the display format of the display terminal
• CPC Class Codes: H04N 21/426 Internal components of the client ; Characteristics thereof H04N5/44 takes precedence
• CPC Class Codes: H04N 21/4355 involving reformatting operations of additional data, e.g. HTML pages on a television screen optimising the visualization of content for information retrieval from the Internet G06F16/9577; adaptation of message content in packet-switching networks H04L51/066; media handling at the source in data packet switching networks H04L65/764
• CPC Class Codes: H04N 21/4358 for generating different versions, e.g. for different peripheral devices
• CPC Class Codes: H04N 21/4621 Controlling the complexity of the content stream or additional data, e.g. lowering the resolution or bit-rate of the video stream for a mobile client with a small screen arrangements for using the results of monitoring on user's side in broadcast systems H04H60/65; flow control in packet networks H04L47/10
• CPC Class Codes: H04N 21/4858 for modifying screen layout parameters, e.g. fonts, size of the windows
• CPC Class Codes: H04N 5/46 for receiving on more than one standard at will deflecting circuits of multi-standard receivers H04N3/27

Abstract

Disclosed is an image display device in a digital TV that is capable of carrying out the conversion into various kinds of resolution by using single bit map data in the digital TV. The image display device includes: a data processing part for executing bit map conversion, compression, restoration and format-conversion for text data; a memory for storing the bit map data obtained according to the bit map conversion and compression in the data processing part and image data inputted from an arbitrary receiving part, the receiving part receiving one of digital image data and analog image data; an image outputting part for reading the image data from the memory; and a display processing part for mixing the image data read from the image outputting part and the bit map data converted in format from the data processing part. Therefore, the image display device according to the present invention can convert text data in such a manner as to correspond with various resolution, carry out the compression for bit map data, thereby reducing the memory space, and support text data of an HTML format, thereby providing the image with the text data of various shapes.

Claims

1. A digital television having a display, comprising:

a receiving part configured to receive at least one of digital image data and analog image data;

a data processing part configured to execute bit map conversion and format-conversion for text data to be displayed on the display;

a memory configured to store the bit map data obtained according to the bit map conversion in the data processing part and image data inputted from an arbitrary receiving part;

an image outputting part configured to read image data from the memory; and

a display processing part configured to mix image data read from the image outputting part and the bit map data converted in format by the data processing part.

2. The digital television as defined in claim 1, wherein the data processing part comprises a bit map converter configured to determine whether the text data is the bit map data and that converts the text data into the bit map data, based upon the determined result, and a bit map compressor configured to compress the bit map data by using compression coding.

3. The digital television as defined in claim 2, wherein the data processing part further comprises a bit map decompressor configured to read the compressed bit map data from the memory to thereby restore the read data to its original bit map data, and a format converter configured to convert the format of the decompressed bit map data to correspond with display resolution.

4. The digital television as defined in claim 3, wherein the format converter adjusts the resolution by integrating real number times to either a horizontal direction or a vertical direction of decompressed bit map data.

5. The digital television as defined in claim 2, wherein the bit map converter converts the text data into the bit map data, if it is determined that the text data is not the bit map data.

6. The digital television as defined in claim 2, wherein the bit map converter bypasses the text data, if it is determined that the text data is the bit map data.

7. The digital television as defined in claim 2, wherein the predetermined compression coding is a run-length compression coding.

8. The digital television as defined in claim 1, wherein the text data is at least one among HTML data, DHTML data, XML data, SGML data and bit map data.

9. The digital television as defined in claim 1, wherein the memory stores first bit map data or second bit map data.

10. The digital television as defined in claim 1, wherein the conversion of the text data is carried out by using either first bit map data or second bit map data.

11. The digital television as defined in claim 1, wherein the display displays different resolution images.

12. A digital television having a data processing device and a display, comprising:

a bit map converter configured to determine whether text data to be displayed on the display is bit map data and to convert the text data into bit map data;

a bit map compressor configured to compress the bit map data by using compression coding;

a bit map decompressor configured to read the compressed bit map data from a memory for restoring read data to its original bit map data; and

a format converter configured to convert the format of the decompressed bit map data to correspond with display resolution.

13. The digital television as defined in claim 12, wherein the text data is at least one among HTML data, DHTML data, XML data, SGML data and bit map data.

14. The digital television as defined in claim 12, wherein the bit map converter converts the text data into bit map data if it is determined that the text data is not bit map data.

15. The digital television as defined in claim 12, wherein the bit map converter bypasses the text data if it is determined that the text data is bit map data.

16. The digital television as defined in claim 12, wherein the predetermined compression coding is a run-length compression coding.

17. The digital television as defined in claim 12, wherein the conversion of the text data is carried out by using either first bit map data or second bit map data previously stored in the memory.

18. The digital television as defined in claim 12, wherein the format converter adjusts the resolution by integrating real number times by either the horizontal direction or the vertical directions of the decompressed bit map data.

19. The digital television as defined in claim 12, wherein the display displays different resolution images.

20. A digital television having a data processing device and a display, comprising:

a bit map converter configured to determine whether text data to be displayed on the display is bit map data and configured to convert the text data into bit map data;

a format converter configured to convert the format of the decompressed bit map data to correspond with display resolution;

a bit map compressor configured to compress the bit map data by using compression coding; and

a bit map decompressor configured to read the compressed bit map data from a memory for restoring the read data back to its original bit map data.

21. The digital television as defined in claim 20, wherein the conversion of the text data is carried out by using either first bit map data or second bit map data previously stored in the memory.

22. The digital television as defined in claim 20, wherein the format converter adjusts the resolution by integrating real number times to either the horizontal direction or the vertical direction of the decompressed bit map data.

23. The digital television as defined in claim 20, wherein the display displays different resolution images.