Television set

• US 8,310,599 B2
• Filed: 08/05/2008
• Issued: 11/13/2012
• Est. Priority Date: 08/08/2007
• Status: Active Grant

• Current Assignee: Renesas Electronics Corporation
• Original Assignee: Renesas Electronics Corporation
• Inventors: Hashimoto, Yoshiharu
• Primary Examiner(s): Kumar, Pankaj
• Assistant Examiner(s): MENGESHA, MULUGETA A
• Application Number:
  US12/222,219
• Publication Number:
  US 20090185082A1
• Time in Patent Office: 1,561 Days
• Field of Search: 348/705, 348/706, 348/792, 348/555, 348/558, 348/739
• US Class Current: 348/705
• 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,

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,

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, and

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.

2. 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 the polarity of the 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.

3. 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 the polarity of the 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.

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

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

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

7. The television set according to claim 1, wherein the first video signal comprises a digital video signal,

wherein, when a copy control signal is added to said digital video signal to indicate a limitation of a number of times of a copy, said television set body section displays said digital video signal on said display panel in the second drive system, and

wherein, when the copy control signal is not added to said digital video signal, the television set body section displays said digital video signal on said display panel in the first drive system.

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

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

10. The television set according to claim 8, further comprising:

an operation section configured to be operated by a user,

wherein, 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, said television set body section switches from the second drive system to the first drive system to display the second video signal in the first drive system, and

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

11. 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.

12. The television set according to claim 1, wherein a pixel of said pixels comprises:

a TFT element;

a pixel electrode; and

a common electrode opposite to said pixel electrode, and

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

17. The television set according to claim 1, wherein the first drive system is pre-selected to drive the first video signal supplied to the first input terminal.

18. The television set according to claim 17, wherein, when the first drive system is de-selected from driving the first video signal, the second drive system is selected to drive the first video signal.

19. The television set according to claim 1, wherein the data lines are driven in a 1F inversion drive and the scan lines are driven using to an interlace drive.

20. The television set according to claim 1, wherein the drive lines are driven using a 1F inversion drive in a first display mode and the drive lines are driven using a 1H inversion drive in a second display mode.

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

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

wherein said display panel comprises pixels arranged at intersections of scan lines and data lines,

wherein said displaying the 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, and

wherein said displaying the 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.

14. The method according to claim 13, further comprising:

interlace-scanning scan lines, of the display panel, in the second drive system; and

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

15. The method according to claim 13, further comprising:

interlace-scanning scan lines, of the display panel, in the second drive system; and

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

16. The method according to claim 13, wherein a drive frequency of the second drive system is higher than a drive frequency of the first drive system.