Method of displaying digital broadcasting signals through a digital broadcasting receiver and a display device

• US 6,714,253 B2
• Filed: 03/06/2001
• Issued: 03/30/2004
• Est. Priority Date: 03/06/2000
• Status: Active Grant

• Current Assignee: LG Electronics, Inc. (LG Corporation)
• Original Assignee: LG Electronics, Inc. (LG Corporation)
• Inventors: Kim, Eun Joo, Cho, Teag Il, Lee, Choon
• Primary Examiner(s): Kostak, Victor R.
• Application Number:
  US09/799,077
• Publication Number:
  US 20010019365A1
• Time in Patent Office: 1,120 Days
• Field of Search: 348/554-558, 348/445, 348/734, 348/441, 348/553, 725/38
• US Class Current: 348/556
• CPC Class Codes: H04N 21/426 Internal components of the client ; Characteristics thereof H04N5/44 takes precedence
• CPC Class Codes: H04N 21/43632 involving a wired protocol, e.g. IEEE 1394 high-speed IEEE 1394 serial bus H04L12/40052
• CPC Class Codes: H04N 21/440218 by transcoding between formats or standards, e.g. from MPEG-2 to MPEG-4 conversion of standards in analogue television systems H04N7/01
• CPC Class Codes: H04N 21/440272 for performing aspect ratio conversion
• CPC Class Codes: H04N 21/44231 Monitoring of peripheral device or external card, e.g. to detect processing problems in a handheld device or the failure of an external recording device configuring of peripheral devices in general G06F9/4411; reporting information sensed by appliance or service execution status of appliance services in a home automation network H04L12/2823; monitoring the status of connected device in data switched networks H04L43/0817
• 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 7/0122 the input and the output signals having different aspect ratios

Abstract

A method of displaying a digital broadcasting signal using a digital broadcasting receiver and a digital display device is disclosed. In the present invention, information on a display mode of the display device is communicated to the digital broadcasting receiver through a bi-directional communication line. As a result, the digital broadcasting receiver can process the input digital broadcasting signal according to the display mode. Thus, the digital broadcasting signal can be displayed in an optimum display mode through the digital display device. Accordingly, the received digital broadcasting signal can be displayed in diverse formats and in an optimum condition.

Claims

1. A method of displaying a broadcasting signal using a digital broadcasting receiver and a display device, comprising:

(a) connecting the digital broadcasting receiver to the display device with a bi-directional communication line;

(b) transmitting, from the display device to the digital broadcasting receiver, the information on the display mode of the display device through the bi-directional communication line;

(c) processing, at the digital broadcasting receiver, an input broadcasting signal in accordance with the display mode of the display device and generating information regarding the processed broadcasting signal;

(d) transmitting, from the digital broadcasting receiver to the display device, the information regarding the processed broadcasting signal through the bi-directional communication line;

(e) transmitting, from the digital broadcasting receiver to the display device, the processed broadcasting signal; and

(f) determining, at the display device, an optimum display mode using the information regarding the processed broadcasting signal and displaying the processed broadcasting signal in the optimum display mode.

2. A method of claim 1, wherein in (b), the display mode includes information on a resolution, scanning type, and aspect ratio.

3. A method of claim 1, wherein in (c), the information regarding the processed broadcasting signal includes the resolution, scanning type, aspect ratio, aspect ratio change information, enable or disable information of the aspect ratio change information, and custom information.

4. A method of claim 1, wherein the information on the display mode is a data field including one bit representing an aspect ratio, one bit representing a scanning type, one bit representing a resolution, and one bit representing an automatic display mode change.

5. A method of claim 4, wherein the aspect ratio is either of 16:

9 or 4;

3, the scanning type is either interlace or progressive, and the resolution is either high definition or standard definition.

6. A method of claim 1, wherein the information regarding the processed broadcasting signal is a data field including one bit representing an aspect ratio, one bit representing a scanning type, one bit representing a resolution, one bit representing an automatic display mode change, one bit representing a custom information, three bits representing an aspect ratio change information, and one bit representing enable/disable information of the aspect ratio change.

7. A method of claim 6, wherein the aspect ratio is either of 16:

9 or 4;

3;

the scanning type is either interlace or progressive;

the resolution is either high definition or standard definition;

the aspect ratio change information is one of pan/scan, letter box, crop, wide, spectacle, zooming, normal, and squeeze; and

the custom bit is a processing information of the processed broadcasting signal.

8. A method of claim 1, wherein in (f), determining the optimum mode by searching from a lookup table for a display mode that matches the information of the processed broadcasting signal.

9. A method of claim 8, wherein the lockup table includes information on a plurality of display modes transmitted from the digital broadcasting receiver to the display device and corresponding display modes of the display device.

10. A method of claim 9, wherein the information on the plurality of display modes includes resolution, aspect ratio, and aspect ratio change information.

11. A method of claim 1, wherein (e) comprises:

connecting the digital broadcasting receiver to the display device with a transmission line; and

transmitting, from the digital broadcasting receiver to the display device, the processed broadcasting signal through the transmission line.

12. A method of displaying a broadcasting signal using a digital broadcasting receiver and a display device, comprising:

(a) connecting the digital broadcasting receiver to the display device with a transmission line;

(b) processing, at the digital broadcasting receiver, input broadcasting signal and inserting information regarding the processed broadcasting signal onto the processed broadcasting signal;

(c) transmitting, from the digital broadcasting receiver to the display device, the processed broadcasting signal with the inserted information regarding the processed broadcasting signal through the transmission line;

(d) extracting, at the display device, the information regarding the processed broadcasting signal and determining an optimum display mode using the extracted information regarding the processed broadcasting signal; and

(e) displaying the processed broadcasting signal in the optimum display mode.

13. A method of claim 12, wherein in (b), the processed broadcasting signal is an analog broadcasting signal and inserting the information on the analog broadcasting signal among the scanning lines of the analog broadcasting signal.

14. A method of claim 12, wherein in (b), the information regarding the processed broadcasting signal includes an aspect ratio, a scanning type, a resolution, an aspect ratio change information, an enable/disable information of the aspect ratio change information, and a custom information.

15. A method of claim 12, wherein in (b), the information regarding the processed broadcasting signal is a data field including one bit representing an aspect ratio, one bit representing a scanning type, one bit representing a resolution, one bit representing an automatic display mode change, one bit representing a custom information, three bits representing an aspect ratio change information, and one bit representing enable/disable information of the aspect ratio change.

16. A method of claim 12, wherein in (d), determining the optimum mode by searching from a lookup table for a display mode that matches the information of the processed broadcasting signal.

17. A method of claim 16, wherein the lookup table includes information on a plurality of display modes transmitted from the digital broadcasting receiver to the display device and corresponding display modes of the display device.

18. A method of displaying a broadcasting signal using a digital broadcasting receiver and a display device, comprising:

(a) determining whether the digital broadcasting receiver is connected to the display device;

(b) determining whether the connection is uni-directional or bi-directional if the digital broadcasting receiver is connected to the display device;

(c) processing, at the digital broadcasting receiver, input broadcasting signal and inserting information regarding the processed broadcasting signal to the processed broadcasting signal, if the connection is uni-directional and transmitting to the display device the processed broadcasting signal with the inserted information regarding the processed broadcasting signal;

(d) extracting, at the display device, the information regarding the processed broadcasting signal and determining an optimum display mode using the extracted information regarding the processed broadcasting signal, if the connection is uni-directional;

(e) transmitting, from the display device to the digital broadcasting receiver, the information on the display mode of the display device if the connection is bi-directional;

(f) processing, at the digital broadcasting receiver, an input broadcasting signal in accordance with the display mode of the display device, generating information regarding the processed broadcasting signal, and transmitting to the display device the processed broadcasting signal with the information regarding the processed broadcasting signal, if the connection is bi-directional;

(g) determining, at the display device, an optimum display mode using the information regarding the processed broadcasting signal, if the connection is bi-directional; and

(h) displaying the processed broadcasting signal in the optimum display mode.

19. A method of claim 18, wherein determining the optimum mode by searching from a lookup table for a display mode that matches the information of the processed broadcasting signal.