|Publication number||USRE42640 E1|
|Application number||US 12/585,248|
|Publication date||Aug 23, 2011|
|Priority date||Jul 31, 2003|
|Also published as||CN1306798C, CN1581948A, US7268829, US20050024537, US20120019666|
|Publication number||12585248, 585248, US RE42640 E1, US RE42640E1, US-E1-RE42640, USRE42640 E1, USRE42640E1|
|Original Assignee||Samsung Electronics Co., Ltd.|
|Export Citation||BiBTeX, EndNote, RefMan|
|Patent Citations (26), Non-Patent Citations (14), Referenced by (1), Classifications (14), Legal Events (1)|
|External Links: USPTO, USPTO Assignment, Espacenet|
This application claims the benefit of Korean Patent Application No. 2003-53252, filed Jul. 31, 2003, in the Korean Intellectual Property Office, the disclosure of which is incorporated herein by reference.
This application is a broadening reissue application of U.S. Pat. No. 7,268,829, which claims U.S. application Ser. No. 10/833,085, filed with the U.S. Patent Trademark Office on Apr. 28, 2004 and earlier priority benefit to Korean Patent Application No. 10-2003-0053252 filed with the Korean Intellectual Property Office on Jul. 31, 2003, the disclosures of which are incorporated herein by reference.
1. Field of the Invention
The present invention relates to a display apparatus, and more, particularly, to a display apparatus in which a favorite picture display state is optionally and objectively controlled.
2. Description of the Related Art
Generally, a display apparatus such as a TV, a monitor, etc., has to be controlled in a picture display state showing properties such as color, contrast, brightness, color temperature, etc., so as to substantially display the color temperature, the brightness, etc., of a screen as a user wants.
However, because it takes a significant amount of time to control the color temperature of the display apparatus in detail, the conventional display apparatus typically has two to five settings of the color temperature stored in EEPROM (electrically erasable programmable read only memory) on a production line, so that a user can select one among the two to five settings of the color temperature stored in the EEPROM when there is a need to control the color of a screen.
Therefore, the color temperature of the conventional display apparatus is simply selected among the plurality of settings of the color temperature set up on the production line, and cannot be voluntarily controlled as a user wants.
Meanwhile, the color temperature of the display apparatus is typically controlled through control buttons provided on the display apparatus or a separate device. Generally, when a selection button among the control buttons is pressed, the color temperature corresponding to the selection button is directly applied to a current displayed screen. Then, when a setup button among the control buttons is pressed, the color temperature being applied to the current displayed screen is set up as the color temperature for the display device.
When displaying the selected color temperature setting, the screen applied with the selected color temperature is displayed in a full screen, so that there is no reference screen allowing a user to objectively distinguish the currently viewed color temperature from the other possible color temperature settings.
Therefore, a user cannot objectively control the color temperature as desired.
Accordingly, it is an aspect of the present invention to provide a display apparatus in which a favorite picture display state is optionally and objectively controlled referring to a reference screen.
Additional aspects and/or advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.
The foregoing and/or other aspects of the present invention are achieved by providing a display apparatus comprising a display to display a picture; a signal processor to format a video signal to be output to the display; and a controller to output a control signal to the signal processor on the basis of a picture display state controlled through a control screen; wherein the picture display state is set by a user through the control screen, which is displayed concurrently with a plurality of reference screens displaying different values of the picture display state.
According to an aspect of the invention, the control screen may comprise a drag bar having an adjuster, and the picture display state is controlled by dragging the adjuster on the drag bar.
According to an aspect of the invention, the display apparatus may further comprise a user control with which the user controls the picture display state.
According to an aspect of the invention, the picture display state may be a color temperature.
These and/or other aspects and advantages of the present invention will become apparent and more readily appreciated from the following description of the embodiments, taken in conjunction with the accompany drawings of which:
Reference will now be made in detail to the embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the like elements throughout. The embodiments are described below to explain the present invention by referring to the figures.
Further, the display apparatus comprises a user control 60 allowing a user to control the picture display state.
The signal processor 30 includes a video decoder to process an ordinary video signal, an ADC (analog to digital converter) to process a digital video signal, and a scaler to adapt the video signal processed by the video decoder and the ADC to the display 20.
The video decoder receives a video signal such as NTSC (national television standard committee)—TV, VHS (video home system)—video, etc., and separates the video signal into a Y component, as a brightness signal, and R-Y and B-Y components as chrominance signals. Here, the R-Y and B-Y components are converted into RGB (red, green, blue) signals for color. Hereinafter, the brightness signal (Y) and the chrominance signals (R-Y and B-Y), output from the video decoder, will be represented as a YCbCr signal.
The ADC is employed to process a video signal for a DVD (digital versatile disk) or an HDTV (high definition television), and outputs a video signal including the brightness signal (Y) and the chrominance signals (R-Y and B-Y). Hereinafter, the brightness signal (Y) and the chrominance signals (R-Y and B-Y), output from the ADC, will be represented as a YPbPr signal.
The scaler adapts the YCbCr and YPbPr signals to a vertical frequency, resolution (the number of pixels), a screen ratio (16:9, 4:3), etc., of the display 20, and, at the same time, converts the YCbCr and YPbPr signals into a digital RGB signal by calculating the YCbCr and YPbPr signals through a computing mechanism according to the signal formats.
The controller 40 offers a control screen allowing a user to set up the picture display state, and the plurality of reference screens employed as a reference when the picture display state is controlled.
The control screen and the plurality of reference screens are previously stored in a setup screen storage 50 of the controller 40. Here, the setup screen storage 50 includes an EEPROM or a flash memory.
As shown in
Here, the reference screens 10a through 10d are invariable screens applied with predetermined color temperatures, and the control screen 11 is a variable screen varying in the color temperature corresponding to the selection of the user.
It is preferable, though not necessary, that the reference screens 10a through 10d and the control screen 11 have pictures allowing the user to easily distinguish a difference in the color temperature. A landscape, a man, a building, gradation, and the like are a few suitable possibilities for the pictures of the reference screens 10a through 10d and the control screen 11. Further, the pictures are provided corresponding to each of the possible color temperature settings.
In this embodiment, four invariable screens 10a, 10b, 10c, and 10d, with respective color temperatures of 6,500° K, 9,500° K, 13,000° K, and 25,000° K. are illustrated as the refer screens. This is merely an example of possible reference screens, and is not intended to limit this embodiment of the present invention to these values. Alternately, the number of the reference screens may be more or less than four.
The plurality of reference screens allows a user to objectively distinguish a favorite color temperature from among the possible color temperature settings when a user wants to set up the color temperature.
Here, the invariable screens preferably have all the same pictures to allow a user to distinguish the difference in the color temperature, but the invariable screens may have different pictures from each other. Also, it should be appreciated that the reference screens 10a through 10d may have a different picture than the control screen 11.
The controller 40 (refer to
The control screen 11 may include a drag bar 12 having an adjuster 12a capable of being dragged. Here, the drag bar 12 represents the whole color temperature that the display apparatus according to this embodiment of the present invention can display. In this embodiment, the color temperature ranges from 6,000K to 30,000° K.
As the adjuster 12a of the drag bar 12 is dragged, the control screen 11 is changed to the color temperature corresponding to the position of the adjuster 12a on the drag bar 12.
That is, when a user makes the setup screen 10 be displayed on the display 20 in order to control the color temperature, the controller 40 determines where the adjuster 12a is positioned on the drag bar 12. Subsequently, the controller 40 outputs the control signal to the signal processor 30 on the basis of the controlled color temperature corresponding to the position of the adjuster 12a, and then the signal processor 30 applies the controlled color temperature to only the control screen 11 of the display 20.
Further, when a user sets up the controlled color temperature as the color temperature for the display device by using a predetermined setup button, the controller 40 receives a setup signal corresponding to the setup button. Subsequently, the controller 40 outputs the control signal corresponding to the controlled color temperature applied to only the control screen 11 to the signal processor 30. Then, the signal processor 30 applies the setup color temperature being applied to only the control screen 11 to the video signal for a full screen of the display 20.
Here, the controlled color temperature being applied to only the control screen 11 may be temporarily stored in a memory (not shown) provided in the controller 40 while being controlled. The controlled color temperature stored in the memory can be read and outputted to the signal processor 30 while being set up.
Further, to get more enhanced definition, the color temperature can be controlled through a lookup table having control factors such as an RGB gamma value, a color tone, a gain, a cut-off, brightness, etc., according to the color temperature.
In this case, the signal processor 30 can make the setup color temperature be not applied to a video signal that is irrelevant to the color temperature, e.g., a video signal corresponding to a skin tone or RGB primary colors.
The user control 60 may include a user interface having a function key to display the setup screen 10 on the display 20, and a drag key to drag the adjuster 12a on the control screen 11.
Further, the user control 60 is preferably, though not necessarily, achieved by an OSD (on screen display) button provided on the display apparatus, or a remote control.
The OSD button or the remote control has the function keys to stop displaying a picture based on a received video signal on the display 20 and to display the previously stored setup screen 10 so as to allow a user to set up the color temperature. Further, the drag key to control the color temperature can be implemented by existing direction keys.
In this embodiment, the color temperature is exemplarily described as the picture display state, but the embodiment is not limited to color temperature. Alternatively, any controllable picture display state, such as color, contrast, brightness, etc., can be set up with reference to the reference screens according to the picture display states as described above.
With this configuration, a user can optionally and objectively set up a favorite picture display with reference to the reference screens.
As described above, the present invention provides a display apparatus in which a favorite screen display state is optionally and objectively controlled referring to a reference screen.
Although a few embodiments of the present invention have been shown and described, it would be appreciated by those skilled in the art that changes may be made in these embodiment without departing from the principles and spirit of the invention, the scope of which is defined in the claims and their equivalents.
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|1||Chinese Office Action For Related Application, Issued Jun. 9, 2006.|
|2||Japanese Publication No. 10-341358, published Dec. 22, 1998, is generally related to "Picture Quality Adjusting System".|
|3||Japanese Publication No. 6-253327, published Sep. 9, 1994, is generally related to "Display Apparatus".|
|4||Japanese Publication No. 8-163582, published Jun. 21, 1996, is generally related to "Color Temperature Adjusting Apparatus for Color Brown Tube".|
|5||Korean Office Action for 10-2003-0053252.|
|6||Korean Office Action issued Jan. 20, 2006.|
|7||Korean Publication No. 1998-4302, published Mar. 30, 1998, is generally related to "Color Curve Control Circuit and Method".|
|8||Korean Publication No. 1999-26076, published Apr. 15, 1999, is generally related to "Automatic Color Switching and Storing Method for Monitor".|
|9||Korean Publication No. 1999-74284, published Oct. 5, 1999, is generally related to "Color Temperature Control Apparatus for Image Displaying Device".|
|10||Korean Publication No. 2002-79348, published Oct. 19, 2002, is generally related to "User Preferable Color Temperature Converting Method and Apparatus for Image Displaying Device".|
|11||U.S. Appl. No. 10/833,085, filed Apr. 28, 2004, Jin-bog Kim, Samsung Electronics Co., Ltd.|
|12||U.S. Notice of Allowance and Allowability, mailed May 1, 2007, issued in corresponding U.S. Appl. No. 10/833,085.|
|13||U.S. Patent Office Action, mailed Aug. 6, 2007, issued in corresponding U.S. Appl. No. 10/833,085.|
|14||U.S. Patent Office Action, mailed Oct. 31, 2006, issued in corresponding U.S. Appl. No. 10/833,085.|
|Citing Patent||Filing date||Publication date||Applicant||Title|
|US20120019666 *||Jan 26, 2012||Samsung Electronics Co., Ltd.||Display apparatus|
|U.S. Classification||348/564, 715/764, 345/634, 345/156|
|International Classification||H04N9/74, G09G5/30, G09G5/06, H04N9/73, H04N9/64, H04N9/30, H04N5/445, G06F3/14|