Television set

• US 20090185082A1
• Filed: 08/05/2008
• Published: 07/23/2009
• Est. Priority Date: 08/08/2007
• Status: Active Grant

• Current Assignee: Renesas Electronics Corporation
• Original Assignee: NEC Electronics Corporation (Renesas Electronics Corporation)
• Inventors: Hashimoto, Yoshiharu
• Granted Patent: US 8,310,599 B2
• Time in Patent Office: Days
• US Class Current: 348/739
• CPC Class Codes: G09G 2320/0247 Flicker reduction other than flicker reduction circuits used for single beam cathode-ray tubes
• CPC Class Codes: G09G 3/3614 Control of polarity reversal in general

Abstract

A television set includes a television set body section which has a display panel in which pixels are arranged at intersections of scan lines and data lines in a matrix; and first and second input terminals provided for the television set body section. A first video signal is displayed on the display panel in a first drive system when the first video signal supplied to the first input terminal is selected. A second video signal is displayed on the display panel in a second drive system when the second video signal supplied to the second input terminal is selected.

Claims

1. A television set comprising:

a television set body section which has a display panel in which pixels are arranged at intersections of scan lines and data lines in a matrix; and

first and second input terminals provided for said television set body section,

wherein a first video signal is displayed on said display panel in a first drive system when the first video signal supplied to said first input terminal is selected, and

wherein a second video signal is displayed on said display panel in a second drive system when the second video signal supplied to said second input terminal is selected.

2. The television set according to claim 1, wherein said television set body section scans said scan lines in order in the first drive system and inverts a polarity of a display signal supplied to said data lines as the first video signal for every horizontal synchronization period and for every frame period.

3. The television set according to claim 1, wherein said television set body section scans said scan lines in order in the second drive system and inverts a polarity of a display signal supplied to said data lines as the second video signal for every frame period.

4. The television set according to claim 1, wherein said television set body section interlace-scans said scan lines in the second drive system and inverts a polarity of a display signal supplied to said data lines as the second video signal when a field is changed from an odd-numbered field to an even-numbered field.

5. The television set according to claim 1, wherein said television set body section interlace-scans said scan lines in the second drive system and inverts a polarity of a display signal supplied to said data lines as the second video signal when a field is changed from an even-numbered field to an odd-numbered field.

6. The television set according to claim 1, wherein a drive frequency in the second drive system is higher than that of the first drive system.

7. The television set according to claim 1, wherein the first video signal is supplied from a personal computer.

8. The television set according to claim 1, wherein the first video signal is supplied from a recording apparatus of a still image.

9. The television set according to claim 1, wherein the first video signal is a digital video signal, and

said television set body section displays said digital video signal on said display panel in the second dive system, when a copy control signal is added to said digital video signal to indicate a limitation of a number of times of a copy, and displays said digital video signal on said display panel in the first drive system, when the copy control signal is not added to said digital vide signal.

10. The television set according to claim 1, wherein the second video signal is a television set broadcasting signal.

11. The television set according to claim 1, wherein the second video signal is supplied from a recording apparatus of a moving image.

12. The television set according to claim 10, further comprising:

an operation section operated by a user,

wherein said television set body section switches from the second drive system to the first drive system to display the second vide signal in the first drive system when a temporary stop signal is inputted from said operation section to temporarily stop the display of the second video signal on said display panel, and switches from the first drive system to the second drive system to display the second vide signal in the second drive system when a release signal is inputted from said operation section to release the temporary stop signal.

13. The television set according to claim 1, wherein said pixels are alternately connected for every one or two data lines to the data lines adjacent to each other in said display panel.

14. The television set according to claim 1, wherein said pixel contains a TFT element, a pixel electrode, and a common electrode opposite to said pixel electrode, and

a fixed voltage is supplied to said common electrode, and polarity of a display signal supplied to the adjacent data lines different from each other.

15. A method of displaying a display signal on a display panel in a television set, comprising:

displaying a first video signal as the display signal on said display panel in a first drive system when the first video signal supplied to a first input terminal is selected; and

displaying a second video signal as the display signal on said display panel in a second drive system when the second video signal supplied to a second input terminal is selected.

16. The method according to claim 15, wherein said display panel has pixels arranged at intersections of scan lines and data lines, and

said displaying a first video signal comprises:

scanning said scan lines in order in the first drive system; and

inverting a polarity of the display signal supplied to said data lines as the first video signal for every horizontal synchronization period and for every frame period.

17. The method according to claim 15, wherein said display panel has pixels arranged at intersections of scan lines and data lines, and

said displaying a second video signal comprises:

scanning said scan lines in order in the second drive system; and

inverting a polarity of the display signal supplied to said data lines as the second video signal for every frame period.

18. The method according to claim 15, further comprising:

interlace-scanning said scan lines in the second drive system; and

inverting a polarity of a display signal supplied to said data lines as the second video signal when a field is changed from an odd-numbered field to an even-numbered field.

19. The method according to claim 15, further comprising:

interlace-scanning said scan lines in the second drive system; and

inverting a polarity of a display signal supplied to said data lines as the second video signal when a field is changed from an even-numbered field to an odd-numbered field.

20. The method according to claim 15, wherein a drive frequency in the second drive system is higher than that of the first drive system.