KR20100071400A - Method for outputting image signal and display system enabling of the method - Google Patents

Method for outputting image signal and display system enabling of the method Download PDF

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Publication number
KR20100071400A
KR20100071400A KR1020080130103A KR20080130103A KR20100071400A KR 20100071400 A KR20100071400 A KR 20100071400A KR 1020080130103 A KR1020080130103 A KR 1020080130103A KR 20080130103 A KR20080130103 A KR 20080130103A KR 20100071400 A KR20100071400 A KR 20100071400A
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KR
South Korea
Prior art keywords
resolution
signal
input signal
determined
synchronization signal
Prior art date
Application number
KR1020080130103A
Other languages
Korean (ko)
Inventor
손재현
Original Assignee
엘지전자 주식회사
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Priority to KR1020080130103A priority Critical patent/KR20100071400A/en
Publication of KR20100071400A publication Critical patent/KR20100071400A/en

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
    • H04N21/43—Processing of content or additional data, e.g. demultiplexing additional data from a digital video stream; Elementary client operations, e.g. monitoring of home network or synchronising decoder's clock; Client middleware
    • H04N21/44—Processing of video elementary streams, e.g. splicing a video clip retrieved from local storage with an incoming video stream or rendering scenes according to encoded video stream scene graphs
    • H04N21/4402—Processing of video elementary streams, e.g. splicing a video clip retrieved from local storage with an incoming video stream or rendering scenes according to encoded video stream scene graphs involving reformatting operations of video signals for household redistribution, storage or real-time display
    • H04N21/440263—Processing of video elementary streams, e.g. splicing a video clip retrieved from local storage with an incoming video stream or rendering scenes according to encoded video stream scene graphs involving reformatting operations of video signals for household redistribution, storage or real-time display by altering the spatial resolution, e.g. for displaying on a connected PDA
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N5/00—Details of television systems
    • H04N5/04—Synchronising
    • H04N5/08—Separation of synchronising signals from picture signals
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N7/00—Television systems
    • H04N7/01—Conversion of standards, e.g. involving analogue television standards or digital television standards processed at pixel level
    • H04N7/0117—Conversion of standards, e.g. involving analogue television standards or digital television standards processed at pixel level involving conversion of the spatial resolution of the incoming video signal

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  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Computer Graphics (AREA)
  • Controls And Circuits For Display Device (AREA)

Abstract

The present invention relates to an image processing method of an image device that classifies the resolution of an input signal using a width value of a horizontal synchronization signal or a vertical synchronization signal, and to an image device employing the method.

Description

TECHNICAL FOR OUTPUTTING IMAGE SIGNAL AND DISPLAY SYSTEM ENABLING OF THE METHOD}

The present invention relates to an image processing method and a video device employing the method, and more particularly, to an image processing method and a method for classifying a resolution of an input signal using a width value of a horizontal synchronization signal or a vertical synchronization signal. It relates to an imaging device.

Today, with the development of imaging technology, the spread of flat panel display devices is becoming more common, and the types of input signals and resolutions of input signals that can be output from flat panel displays are becoming more and more diverse.

Prior art imaging apparatuses, including flat panel display devices, classify the resolution of an input signal and then output an image to match the display output resolution.

By the way, when it is determined that the resolution of the input signal is included in a similar range, there is a problem that the prior art imaging device does not accurately determine the resolution.

For example, when input signals having resolutions of 1024 * 768, 1080 * 768, 1360 * 768, and 1366 * 768 are respectively input, the image apparatus of the prior art does not accurately distinguish the resolution, and judges the resolution to be similar. In addition, by outputting an image by judging the resolution selected by the user, there is a problem in that the resolution of the input signal cannot be properly distinguished.

Accordingly, there is an urgent need to develop a video device capable of providing a high quality image by solving the above problems and accurately outputting the input signal by accurately classifying the resolution of the input signal.

The present invention solves the problems of the prior art as described above, by accurately classifying the resolution of the similar input signal, to perform the image processing according to the resolution to provide a high-quality image and an image using the method It is an object to provide a device.

In addition, the present invention provides an image processing method and an image apparatus employing the method that can provide a high-quality image by performing the image processing by accurately classifying the resolution while reducing the amount of calculation required to determine the resolution of the input signal For other purposes.

An image processing method of an image apparatus according to an embodiment of the present invention may include determining a width value of a horizontal synchronizing signal or a vertical synchronizing signal of the input terminal when an input signal is input from an input terminal; Determining the resolution of the input signal by using the determined width value of the horizontal synchronization signal or the vertical synchronization signal; Image processing the input signal according to the determined resolution; And outputting the image processed input signal.

According to another embodiment of the present invention, a video apparatus includes: a scaler configured to determine a width value of a horizontal sync signal or a vertical sync signal of an input terminal when an input signal is input from an input terminal; A resolution determination module that determines the resolution of the input signal by using the determined width value of the horizontal synchronization signal or the vertical synchronization signal; And an output unit configured to image-process the input signal according to the determined resolution and output the image-processed input signal.

The present invention has the effect of accurately classifying the resolution of the input signal using the horizontal sync signal or the vertical sync signal width value of the input signal, thereby providing a high quality image by performing image processing suitable for the resolution.

In addition, the present invention has the effect of providing a high-quality image by reducing the amount of computation required to determine the resolution of the input signal, performing image processing by accurately classifying the resolution.

Hereinafter, an image processing method of an image device and an image device according to the method will be described in detail with reference to the accompanying drawings.

1 is a diagram illustrating a process of determining a resolution of an input signal in an image device of the present invention.

Referring to FIG. 1, in step S101, an image device receives an input signal from an input terminal.

In this case, the input terminal is a terminal that can be connected to a video device, and may include one or more of a digital television (DTV), a digital versatile disc (DVD) player, and an HDMI (high definition multimedia interface) input terminal. It includes all the terminals that can be connected to the input means transmitted from the video device.

In operation S102, the image apparatus includes one of a horizontal synchronizing signal frequency, a vertical synchronizing signal frequency, and a vertical syncronizing signal total line of the input signal. After determining the above values, the determined values are compared with the register values recorded in the predetermined table to search for the same value.

The predetermined table is a means for recording and maintaining data for determining the resolution of the input signal, and may be stored in a data storage medium. The table includes a horizontal synchronizing signal frequency, a vertical synchronizing signal frequency, a vertical syncronizing signal total line, a horizontal synchronizing signal, or a vertical signal corresponding to each resolution. The width value of the synchronization signal can be stored in advance.

One embodiment of such a resolution table is illustrated in FIG. 4 and will be described later.

In operation S103, the video apparatus determines whether the resolution corresponding to the input signal is present in the table.

When the resolution of the input signal is determined as a result of the determination in step S103, the image device processes the input signal according to the determined resolution in step S107, and then outputs the image processed input signal.

If the resolution corresponding to the input signal is not determined as a result of step S103, the video apparatus determines a width value of a horizontal sync signal or a vertical sync signal of the input signal in step S104.

3 is a diagram illustrating an embodiment of determining a width value of a horizontal sync signal or a vertical sync signal of an input signal according to the present invention. Referring to FIG. 3, an image device according to an exemplary embodiment may measure a width value 301 of a horizontal sync signal or a vertical sync signal of an input signal.

The imaging apparatus determines the resolution of the input signal in step S105 by searching the table for the width value of the horizontal synchronizing signal or the vertical synchronizing signal.

If the resolution of the input signal is determined as a result of the determination in step S105, in step S107 the image device processes the input signal according to the determined resolution, and then outputs the image processed input signal.

If the resolution of the input signal is not determined as a result of the determination in step S105, the imaging apparatus applies the resolution set by the user in step S106, and after processing the input signal according to the resolution applied in step S107, And outputs the image processed input signal.

2 is a flowchart illustrating a process of determining a resolution of an input signal in detail according to an embodiment of the present invention.

Referring to FIG. 2, in step S201, an image device according to an embodiment of the present invention may include a horizontal synchronizing signal frequency, a vertical synchronizing signal frequency, and a vertical synchronizing signal of an input signal. After determining one or more values of the vertical synchronizing signal total lines, the determined values are compared with the register values recorded in a predetermined table.

As a result of the comparison search, if the correct resolution is not determined, in step S202, the image apparatus may display the horizontal synchronizing signal frequency, the vertical synchronizing signal frequency, and the number of lines of the vertical synchronizing signal. One or more of vertical synchronizing signal total lines returns similar resolution information.

In operation S303, the image apparatus determines a resolution at which the width values of the horizontal synchronization signal or the vertical synchronization signal are the same among the returned resolutions, and sets the resolution of the input signal.

For example, the image apparatus may set 1024 * 768, which is a resolution at which the width values of the horizontal synchronization signals match, among the returned 1024 * 768, 1280 * 768, and 1360 * 768 resolutions as the resolution of the input signal.

When the pseudo resolution value is returned and the resolution that the width value of the vertical synchronization signal or the horizontal synchronization signal coincides is determined, the amount of computation required for resolution determination may be reduced.

4 is a diagram illustrating a resolution table according to an embodiment of the present invention. Referring to FIG. 4, a resolution table according to an embodiment of the present invention may store respective data values as register values 401 and 402 in response to signals of each resolution.

For example, the resolution table may include a horizontal sync signal frequency, a vertical sync signal frequency, and a vertical sync signal total line as a register value 401. Can record

In addition, the width value of the horizontal synchronizing signal or the vertical synchronizing signal may be stored as the register value 402.

After determining the horizontal sync signal frequency, the vertical sync signal frequency, and the total number of vertical sync signals of the input signal, the imaging apparatus searches the table to determine the resolution of the input signal. In addition, after determining the width value of the horizontal synchronization signal or the vertical synchronization signal of the input signal, the table may be searched to accurately determine the resolution of the corresponding input signal.

For example, the image apparatus measures the width value of the vertical synchronization signal of the input signal to 0.084 msec, and then retrieves it from the table to determine that the resolution of the input signal is 1024 * 768.

Therefore, the present invention accurately distinguishes input signal resolutions having a similar resolution range, thereby providing an image of high quality by performing image processing suitable for the resolution.

5 is a block diagram showing the configuration of a video device according to an embodiment of the present invention. Referring to FIG. 5, an image device according to an embodiment of the present invention includes a scaler 501, a resolution determination module 502, and an output unit 503.

When the input signal is input from the input terminal, the scaler 501 determines the width value of the horizontal synchronizing signal or the vertical synchronizing signal of the input terminal.

The resolution determining module 502 determines the resolution of the input signal using the determined width value of the horizontal synchronization signal or the vertical synchronization signal.

At this time, the resolution determination module 502 may determine the resolution corresponding to the input signal by comparing the width value of the determined horizontal synchronization signal or vertical synchronization signal with a register value recorded in a predetermined table.

At this time, the resolution determination module 502 determines one or more values of the frequency of the horizontal synchronization signal of the input signal, the frequency of the vertical synchronization signal, the number of vertical lines, and then compares the determined value with a register value recorded in a predetermined table. In comparison, when the resolution corresponding to the input signal is determined and the resolution corresponding to the input signal is not determined, the width value of the vertical synchronization signal or the vertical synchronization signal may be determined.

In addition, the resolution determining module 502 determines one or more values of the frequency of the horizontal synchronizing signal of the input signal, the frequency of the vertical synchronizing signal, and the number of vertical lines, and then stores the determined value and the register value recorded in a predetermined table. The resolution corresponding to the input signal may be searched for, and the resolution corresponding to the width value of the vertical synchronization signal or the horizontal synchronization signal may be determined as the resolution of the input signal.

In addition, when the resolution corresponding to the input signal is not determined, the resolution determining module 502 may determine the resolution of the input signal using the resolution set by the user.

The output unit 503 performs image processing on the input signal according to the determined resolution, and outputs the image processed input signal.

The image apparatus according to the present invention has been described so far, and since the technical contents described in the above embodiments may be applied to the image apparatus of FIG. 5, the detailed description thereof will be omitted below.

As described above, the present invention has been described by way of limited embodiments and drawings, but the present invention is not limited to the above-described embodiments, which can be variously modified and modified by those skilled in the art to which the present invention pertains. Modifications are possible. Accordingly, the spirit of the present invention should be understood only by the claims set forth below, and all equivalent or equivalent modifications thereof will belong to the scope of the present invention.

1 is a diagram illustrating a process of determining a resolution of an input signal in an image device of the present invention.

2 is a flowchart illustrating a process of determining a resolution of an input signal in detail according to an embodiment of the present invention.

3 is a diagram illustrating an embodiment of determining a width value of a horizontal synchronizing signal or a vertical synchronizing signal of an input signal according to the present invention;

4 is a diagram illustrating a resolution table according to an embodiment of the present invention.

5 is a block diagram showing the configuration of a video device according to an embodiment of the present invention.

<Explanation of symbols for the main parts of the drawings>

501: scaler

502: resolution determination module

503: output unit

Claims (10)

Determining a width value of a horizontal synchronizing signal or a vertical synchronizing signal of the input signal when an input signal is input from an input terminal; Determining the resolution of the input signal by using the determined width value of the horizontal synchronization signal or the vertical synchronization signal; Image processing the input signal according to the determined resolution; And Outputting the image processed input signal Image processing method of a video device comprising a. The method of claim 1, Determining the resolution of the input signal by using the determined width value of the horizontal synchronization signal or the vertical synchronization signal, Determining the resolution corresponding to the input signal by comparing the width value of the determined horizontal synchronization signal or vertical synchronization signal with a register value recorded in a predetermined table; Image processing method of a video device comprising a. The method of claim 2, Determining the resolution of the input signal by using the determined width value of the horizontal synchronization signal or the vertical synchronization signal, After determining one or more of the frequency of the horizontal synchronizing signal of the input signal, the frequency of the vertical synchronizing signal, the number of vertical lines, and comparing the determined value with a register value recorded in a predetermined table, the resolution corresponding to the input signal. Determining; And Determining the width value of the vertical synchronization signal or the vertical synchronization signal when the resolution corresponding to the input signal is not determined as a result of the determination; Image processing method of a video device comprising a. The method of claim 2, Determining the resolution of the input signal by using the determined width value of the horizontal synchronization signal or the vertical synchronization signal, Determining one or more values of the frequency of the horizontal synchronization signal of the input signal, the frequency of the vertical synchronization signal, and the number of vertical lines, and then searching for a similar resolution by comparing the determined value with a register value recorded in a predetermined table; And Determining a resolution corresponding to the width value of the vertical synchronization signal or the horizontal synchronization signal as the resolution of the input signal among the searched resolutions; Image processing method of a video device comprising a. The method of claim 2, If the resolution corresponding to the input signal is not determined, determining the resolution of the input signal using the resolution set by the user Image processing method of a video device further comprising a. A scaler for determining a width value of a horizontal synchronizing signal or a vertical synchronizing signal of the input terminal when an input signal is input from an input terminal; A resolution determination module that determines the resolution of the input signal using the determined horizontal synchronization signal or the vertical synchronization signal width value; And An output unit configured to image-process the input signal according to the determined resolution and output the image-processed input signal Imaging device comprising a. The method of claim 6, The resolution determination module, And determining the resolution corresponding to the input signal by comparing the width value of the determined horizontal synchronization signal or vertical synchronization signal with a register value recorded in a predetermined table. The method of claim 7, wherein The resolution determination module, After determining one or more of the frequency of the horizontal synchronizing signal of the input signal, the frequency of the vertical synchronizing signal, the number of vertical lines, and comparing the determined value with a register value recorded in a predetermined table, the resolution corresponding to the input signal. And determine the width value of the vertical synchronization signal or the vertical synchronization signal when the resolution corresponding to the input signal is not determined. The method of claim 7, wherein The resolution determination module, After determining one or more of the frequency of the horizontal synchronizing signal of the input signal, the frequency of the vertical synchronizing signal, the number of vertical lines, and comparing the determined value with a register value recorded in a predetermined table to search for a similar resolution. And a resolution corresponding to the width value of the vertical synchronization signal or the horizontal synchronization signal among the searched resolutions as the resolution of the input signal. The method of claim 7, wherein And when the resolution corresponding to the input signal is not determined, the resolution determining module determines the resolution of the input signal using the resolution set by the user.
KR1020080130103A 2008-12-19 2008-12-19 Method for outputting image signal and display system enabling of the method KR20100071400A (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11893712B2 (en) 2019-07-11 2024-02-06 Samsung Electronics Co., Ltd. Electronic device and control method thereof

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11893712B2 (en) 2019-07-11 2024-02-06 Samsung Electronics Co., Ltd. Electronic device and control method thereof

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