KR20080045581A - Display apparatus and control method thereof - Google Patents

Abstract

A display device and its control method are provided to reduce an error that may be generated in determining a broadcast type. A signal receiving unit(10) receives a broadcast signal. A signal processing unit(20) processes the broadcast signal. A user select unit(40) receives a select signal of at least one broadcast type among a plurality of broadcast types. When the broadcast signal is received via the signal receiving unit, a controller(60) checks whether a reception broadcast type of the received broadcast signal is a selected broadcast type for which the selected signal has been inputted from the user select unit. If the reception broadcast type is one of the selected broadcast types, the controller controls the signal processing unit to process the received broadcast signal based on the selected broadcast type.

Description

DISPLAY APPARATUS AND CONTROL METHOD THEREOF}

1 is a control block diagram of a display apparatus according to the present embodiment,

2 is a flowchart illustrating a control process of the display apparatus according to the present embodiment.

Explanation of symbols on the main parts of the drawings

10: signal receiver 20: signal processor

30: display unit 40: user input unit

50: UI generation unit 60: control unit

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a display apparatus and a control method thereof, and more particularly, to a display apparatus for processing a broadcast signal according to a broadcast method in which a broadcast signal is received and a control method thereof.

In general, a display device such as a TV receives a video signal containing a predetermined video from a broadcasting station or a connected external device, processes it, and displays the same.

In particular, the broadcast signal may be transmitted through any one of various broadcast methods, for example, the united states National Television Systems Committee (NTSC) method, Phase Alternation by Line (PAL) method, and Sequence Couleur Memoire (SECA) method. Each broadcasting method has a different standard such as a scanning player, a field frequency, and a color signal modulation method. In more detail, it may be classified into NTSC-M, PAL-B, PAL-D, PAL-M, PAL-N, SECAM-L, and SECAM-K. For reference, Korea adopts NTSC-M broadcasting method.

If the display device receives a broadcast signal due to channel switching, input mode switching, or the like, the display apparatus checks the specification of the received broadcast signal to determine a broadcast method. That is, the number of lines of the broadcast signal is checked first, and if the scan player is 625 lines (50 Hz), it is determined that the PAL broadcast method is used. Then, any one of PAL-B, PAL-G, PAL-I, PAL-D, PAL-K, PAL-M, PAL-N, and PAL-Nc included in the PAL broadcast method is determined. The broadcast signal is processed and displayed according to the determined broadcast method.

In this way, the display apparatus must accurately determine and process the broadcast method of the received broadcast signal among the plurality of broadcast methods. Therefore, the display apparatus takes a long time to determine and process the broadcast method of the broadcast signal.

In particular, in the Central and South America region where the PAM-M system and the NTSC-M system coexist, it is difficult to determine the broadcasting method, which takes about 1200 msec to 2000 msec.

In addition, in the case of a display device supporting world wide, an algorithm for determining a received broadcasting method is continuously used. This is a disadvantage in that it may take a relatively long time to process and display a broadcast signal in an area where only two or three broadcast methods are supported.

Accordingly, an object of the present invention is to provide a display apparatus and a method of controlling the broadcast method of the received broadcast signal by comparing the broadcast method selected by the user to reduce the time required to determine the broadcast method. It is.

According to the present invention, there is provided a display apparatus comprising: a signal receiving unit for receiving a broadcast signal; A signal processor which processes the broadcast signal; A user input unit configured to receive a selection signal of at least one broadcast method among a plurality of broadcast methods; When the broadcast signal is received through the signal receiver, it is determined whether the received broadcast method of the received broadcast signal is a selective broadcast method in which a selection signal is input from the user input unit, and the received broadcast method is one of the selective broadcast methods. In any case, the display apparatus may include a controller configured to control the signal processor to process the received broadcast signal based on the selective broadcast method.

Here, the display unit; Further comprising a UI generator; Preferably, the controller controls the UI generating unit to generate a broadcasting method selection menu for receiving a selection signal of at least one broadcasting method from among the plurality of broadcasting methods and to display the broadcasting method selection menu.

The controller may control the signal processor to process the broadcast signal in a broadcast manner set as a default when the reception broadcast method is not a selective broadcast method in which a selection signal is input from the user input unit.

In addition, the broadcast method of the broadcast signal that can be received through the signal receiver preferably includes at least one of NTSC, PAL, SECAM.

As well as further comprising a storage; The controller may store the selection broadcast method corresponding to the selection signal input from the user input unit in the storage unit.

On the other hand, the object is, according to the present invention, in the control method of the display device, generating and displaying a broadcast method selection menu for receiving a selection signal of at least one broadcast method of a plurality of broadcast methods receiving a broadcast signal; Wow; Receiving a selection signal of a broadcasting method through the broadcasting method selecting menu; When the broadcast signal is received, determining whether the received broadcast method of the received broadcast signal is the selected selective broadcast method; If the reception broadcast method is any one of the selective broadcast method, the method may be achieved by a control method of the display apparatus, including processing the broadcast signal based on the selective broadcast method.

Here, when the reception broadcast method is not the selection broadcast method in which the selection signal is input, it is preferable to process the broadcast signal as a broadcast method set as a default.

In addition, the broadcast method capable of receiving the broadcast signal may include at least one of NTSC, PAL, SECAM.

The receiving of the selection signal of the broadcast method may further include storing the selection broadcast method corresponding to the input selection signal.

Hereinafter, with reference to the accompanying drawings will be described an embodiment of the present invention;

1 is a control block diagram of a display apparatus according to the present invention. As shown in FIG. 1, the display apparatus includes a signal receiving unit 10, a signal processing unit 20, a display unit 30, a user input unit 40, a UI generating unit 50, and a storage unit ( 70 and a control unit 60.

The signal receiver 10 according to the present embodiment includes a tuner unit (not shown) for receiving a broadcast signal. Here, the tuner unit (not shown) may be implemented with one or more tuners, a demodulator, a decoder, a mux, etc. to demodulate the tuned signal.

Then, a broadcast signal having a frequency band corresponding to the tuning control signal of the controller 60, which will be described later, is tuned. The broadcast signal of the tuned channel is received in the form of a packetized transport stream by time division multiplexing a video signal, an audio signal, and various data.

For example, in the case of a digital broadcast signal, the demodulator outputs the received broadcast signal in the form of a transport stream through a VSB demodulation process and an error correction process. In this case, the tuner unit (not shown) may include an analog tuner and a digital tuner, respectively, and may use a multi tuner capable of receiving both an analog broadcast signal and a digital broadcast signal.

The signal processor 20 processes the broadcast signal input from the signal receiver 10 under the control of the controller 60 to be described later, and provides the signal to be displayed on the display unit 30.

In addition, the signal processor 20 may add various functions corresponding to the format of the input video signal. For example, an A / D converting function, a digital decoding function, and a digital video signal and / or an analog video signal for converting input video signals of various formats into digital video signals of a predetermined format are output to the display unit 30. It may include a scaling function for adjusting a vertical frequency, a resolution, an aspect ratio, etc. according to a standard, and a predetermined format conversion function.

The display unit 30 displays a broadcast signal processed by the signal processor 20, and may be implemented in various types such as digital light processing (DLP), liquid crystal display (LCD), plasma display panel (PDP), and the like. .

The user input unit 40 is for inputting a selection signal of at least one broadcast method among a plurality of broadcast methods through which a broadcast signal can be transmitted, a menu key provided on a remote controller or a casing to input a selection signal, and key manipulation It may include a key signal generator for generating a key signal corresponding to the. In addition, the user input unit 40 may further include a numeric key for selecting a channel, a direction key, and a function key for selecting a function provided in the display apparatus.

The UI generator 50 may generate a broadcast method selection menu for selecting at least one broadcast method from among a plurality of broadcast methods under the control of the controller 60, and may be implemented as an OSD generator. In addition, the UI generator 50 may be included in the signal processor 20 for processing the received broadcast signal.

The storage unit 70 stores the selective broadcast method input from the user input unit and may be implemented as an internal ROM, a flash memory, an S-Ram, or the like. In addition, the storage unit 70 may store a default broadcast scheme and a broadcast scheme decoded by the signal processor. Here, the default broadcast method may be stored differently for each region.

The controller 60 processes the broadcast signal by selecting a broadcast method and determining whether the received broadcast method is a selected broadcast method selected by a user when the broadcast signal is received, and may be implemented by a controller such as a CPU or a microcomputer. have.

In detail, when the broadcast method selection function for selecting a broadcast method is selected from the user input unit 40, the controller 60 generates a broadcast method selection menu for selecting at least one of a plurality of broadcast methods. 50).

Here, the broadcast method includes not only the NTSC method, PAL method, SECAM method, but also NTSC-M, PAL-B, PAL-D, PAL-M, PAL-N, SECAM-L, SECAM-K, and the like. Therefore, the broadcast method selection menu generated by the UI generator 50 may include the above-described types of broadcast methods.

When the selection signal of at least one broadcast method among the broadcast method selection menus is input through the user input unit 40, the controller 60 may store the broadcast method in which the selection signal is input, in the memory 70.

Here, the control unit 60 may include only the broadcast method that can be received in the region in the broadcast method selection menu, so that the user can select from among the broadcast method that can be received.

In addition, when a broadcast signal is received, the controller 60 selects a broadcast method (hereinafter, referred to as a 'receive broadcast method') of the received broadcast signal from the user input unit 40, and a broadcast method (hereinafter, 'selected'). Broadcasting system '). In this case, the controller 60 may determine the broadcast signal using a standard such as a scan player, a field frequency, a color signal modulation scheme, and the like.

In other words, the control unit 60 compares the standard of the received broadcast signal with the standard of the selective broadcast method in which the selection signal is input from the user input unit 40, and the received broadcast method of the received broadcast signal is any one of the selective broadcast method. Determine whether or not. If the reception broadcast method is any one of the selective broadcast method, the signal processing unit 20 is controlled to process the broadcast signal by the selective broadcast method.

On the other hand, when the reception broadcast method is not the selective broadcast method, the control unit 60 cannot determine what the reception broadcast method is. Therefore, the signal processor 20 is controlled to process the broadcast signal by the default broadcast method set as the default in the storage unit 70.

For example, it is assumed that the PAL-N method and the NTSC-M method are selected from the user input unit 40. When the broadcast signal is received, the controller 60 checks the scan player of the received broadcast signal. The PAL-N syringe has 625 lines and the NTSC-M syringe has 525 lines. Therefore, if the scan player of the received broadcast signal is 525 lines, the controller 60 determines that the received broadcast method is the NTSC-M method and processes the broadcast signal.

If the reception broadcast method is compared with the PAL-N method, which is the selective broadcast method, and the NTSC-M method, and the received broadcast method is not the selective broadcast method, the received broadcast signal is stored in the storage unit 70. Control to process by default broadcasting.

In this way, since at least one broadcast method is selected from a plurality of broadcast methods by the user and the broadcast method of the received broadcast signal is determined by comparing with the selected broadcast method, the time required for determining the broadcast method is shortened. In addition, since the process of determining the broadcast method is simplified, the time until the received broadcast signal is displayed can be shortened.

In addition, an error that may occur in a process of determining a broadcasting method may be reduced.

The control method of the display apparatus according to the embodiment of the present invention described above will be described using the flowchart of FIG. 2.

As shown in FIG. 2, the controller 60 controls the UI generator 50 to generate and display a menu for selecting at least one broadcast method from among a plurality of broadcast methods (S1).

When a broadcast method is selected from the user input unit 40 (S3), the controller 60 determines whether a broadcast signal has been received (S5).

When the broadcast signal is received, the controller 60 determines whether the received broadcast method in which the broadcast signal is received is one of the selective broadcast method (S7). At this time, the control unit 60 compares the specifications of the received broadcast signal with the specifications of the selection broadcast method corresponding to the selection signal input from the user input unit 40 to determine what the reception broadcast method is.

As a result of the determination in step S7, if the reception broadcast method is any one of the selective broadcast method, the signal processor 20 is controlled to process the received broadcast signal in the selective broadcast method (S9).

As a result of the determination in step S7, if the reception broadcast method is not the selective broadcast method, since it is not possible to determine what the reception broadcast method is, the signal processor 20 is controlled to process the received broadcast signal as the broadcast method set as a default ( S11).

In this way, since at least one broadcast method is selected from a plurality of broadcast methods by the user and the broadcast method of the received broadcast signal is determined by comparing with the selected broadcast method, the time required for determining the broadcast method is shortened. In addition, since the process of determining the broadcast method is simplified, the time until the received broadcast signal is displayed can be shortened.

In addition, an error that may occur in a process of determining a broadcasting method may be reduced.

Although some embodiments of the invention have been shown and described, it will be apparent to those skilled in the art that modifications may be made to the embodiment without departing from the spirit or spirit of the invention. . It is intended that the scope of the invention be defined by the claims appended hereto and their equivalents.

As described above, according to the present invention, since a user receives at least one broadcast method from among a plurality of broadcast methods, and compares the broadcast method of the received broadcast signal with the selected broadcast method, it is necessary to determine the broadcast method. Provided are a display device and a method of controlling the same, which can reduce time.

In addition, a display apparatus and a method of controlling the same are provided to reduce an error that may occur in a process of determining a broadcasting method.

Claims (9)

In the display device, A signal receiver which receives a broadcast signal; A signal processor which processes the broadcast signal; A user input unit configured to receive a selection signal of at least one broadcast method among a plurality of broadcast methods; When the broadcast signal is received through the signal receiver, it is determined whether the received broadcast method of the received broadcast signal is a selective broadcast method in which a selection signal is input from the user input unit, and the received broadcast method is one of the selective broadcast methods. The display apparatus of claim 1, further comprising a controller configured to control the signal processor to process the received broadcast signal based on the selective broadcast method. The method of claim 1, A display unit; Further comprising a UI generator; And the control unit controls the UI generating unit to generate a broadcasting method selection menu for receiving a selection signal of at least one broadcasting method among the plurality of broadcasting methods and display the broadcasting method selection menu on the display unit. The method of claim 2, And the control unit controls the signal processing unit to process the broadcast signal in a broadcast method set as a default when the reception broadcast method is not a selective broadcast method in which a selection signal is input from the user input unit. The method of claim 3, And a broadcast method of broadcast signal receivable through the signal receiver includes at least one of NTSC, PAL, and SECAM. The method of claim 1, Further comprising a storage; And the control unit stores the selection broadcast method corresponding to the selection signal input from the user input unit in the storage unit. In the control method of the display device, Generating and displaying a broadcast method selection menu for receiving a selection signal of at least one broadcast method among a plurality of broadcast methods in which a broadcast signal is received; Receiving a selection signal of a broadcasting method through the broadcasting method selecting menu; When the broadcast signal is received, determining whether the received broadcast method of the received broadcast signal is the selected selective broadcast method; And if the received broadcast method is any one of the selective broadcast method, processing the broadcast signal based on the selective broadcast method. The method of claim 6, And when the reception broadcast method is not a selective broadcast method in which a selection signal is input, processing the broadcast signal using a broadcast method set as a default. The method of claim 7, wherein The broadcast method for receiving the broadcast signal is a control method of the display device, characterized in that it comprises at least one of NTSC, PAL, SECAM. The method of claim 6, Receiving the selection signal of the broadcast method, And storing the selected broadcast method corresponding to the input selection signal.

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