KR20090109788A - Method for controlling Display unit can send capture image and display apparatus thereof - Google Patents

Abstract

PURPOSE: A control method of a display device capable of transmitting the captured image and an apparatus using the same are provided to capture the image by simple input and print the image on a paper. CONSTITUTION: A control method of a display device capable of transmitting the captured image is as follows. A display device and printer are connected through the wireless personal area network(S310). The display device includes a capturing image, an input unit, a bluetooth transceiver, and a controller. The image capturing image captures the image outputted in the specific point of time of the image. The input unit transmits the user instruction received from the remote controller from the control.

Description

Method for controlling display unit can send capture image and display apparatus

The present invention relates to a display device for capturing a specific screen from an image displayed as an image and directly transmitting the captured screen to a wirelessly connected printer and a control method thereof.

In the case of display devices, in particular, TVs, SD (standard definition) has been mostly used in the past, but recently TVs are mostly released in HD (high definition). As the picture quality is improved, the clarity is very excellent even when capturing any scene of the broadcast screen displayed on the TV. However, while it was very easy to capture a scene and print it out immediately while playing a video on a PC, it was not used for this purpose on a TV.

Therefore, even if the scene he wanted on TV was only possible to record it and watch it as a movie, it was not possible to change it into a still image or an image and print it immediately.

SUMMARY OF THE INVENTION The present invention has been made to solve the above problems, and an object of the present invention is to provide a display device that supports a function of capturing a specific screen and printing it in real time while watching a broadcast screen.

According to an aspect of the present invention, there is provided a method of controlling a display device, the method including: capturing an image being output by the display device as an image; And transmitting the captured image to an external printer.

The display device and the printer are preferably connected by using a wireless private network (WPAN).

In addition, the wireless private network is preferably Bluetooth.

The capturing may include extracting a frame; Preferably, the method includes converting the extracted frame into a specific image file and editing the converted image file to be suitable for output.

In the frame extracting step, when the TV scanning method is an interlacing method, it is preferable to combine two fields into one frame.

The method may further include storing the captured image in a storage unit.

On the other hand, the display device according to an embodiment of the present invention includes an image capture unit for capturing an image output at a specific time point as an image; An input unit for transmitting a user command received from a remote controller to a control unit; A Bluetooth transceiver for wirelessly connecting to an external printer and transmitting and receiving data; And a control unit for controlling the capture unit to control the capture unit and to transmit the captured image to an external printer through a Bluetooth transceiver.

The image capture unit may include a frame extractor configured to extract a specific frame from a broadcast screen; A converter for converting the extracted frame into a specific image file; And an editing unit for editing the converted specific image file to be optimized for printing.

In addition, it is preferable to further include a storage unit for storing the captured image in the storage unit.

As described above, according to the present invention, when a viewer watching a broadcast on the display device comes to a desired scene, the viewer immediately captures an image with a simple input and transmits it to a wirelessly connected print to print on paper.

Hereinafter, with reference to the drawings will be described the present invention in more detail.

1 is a diagram illustrating a TV 100 and a printer 210 to which the present invention is applicable. As shown in FIG. 1, the TV 100 and the printer 210 are connected to each other through a Bluetooth communication network 200, and are connected to each other so that data can be transmitted therethrough.

The Bluetooth 200 refers to a standard that enables real-time communication in two directions by wirelessly connecting a computer, a mobile terminal, and a home appliance that is located at a short distance, or refers to a product that meets the standard.

This technology has been applied primarily to mobile phones and notebook computers. Applications of mobile phones include wireless headsets, Internet access, intercoms, cordless phones, and phones with multiple functions. In the case of the combined function, it is automatically switched to the wireless telephone mode at home, and can be used as an intercom by connecting to a private switching network in the office. In the case of wireless headsets, you can make or receive calls without removing your phone. It also applies to e-commerce using mobile phones, such as using a vending machine with a mobile phone or automatically paying a fare when riding a subway.

In the case of laptop computers, this could be an Internet connection via a mobile phone. It also enables data exchange between mobile phones and notebook computers. Newly released notebook computers, either PCMCIA cards or USB dongles, may be embedded in the main unit.

Until now, Bluetooth technology has been widely used in mobile phones and computers, but it is not necessarily available only on these devices. Therefore, in the present invention, by embedding the Bluetooth transceiver in each of the TV 100 and the printer 210, it is utilized to transmit and receive image data between the TV 100 and the printer 210.

Hereinafter, the TV 100 illustrated in FIG. 1 will be described in detail with reference to FIG. 2. FIG. 2 is a detailed block diagram of the TV 100 shown in FIG.

As shown in FIG. 2, the TV 100 includes a broadcast receiver 110, a broadcast processor 120, a display information generator 130, an output unit 140, an input unit 150, a storage unit 160, The image capture unit 170, the controller 180 and the Bluetooth transceiver 190 is provided.

The broadcast receiving unit 110 tunes and demodulates any one of broadcasts wirelessly received through the air.

The broadcast processor 120 performs signal processing on the broadcast signal output from the broadcast receiver 110. The broadcast signal processed by the broadcast processor 120 is applied to the display information generator 130 and added to the video to be displayed on the display.

The display information generation unit 130 processes the image to be added to the broadcast signal by the control unit 180, which will be described below.

The output unit 140 outputs the broadcast signal output from the broadcast processor 120 and the signal output from the display information generator 130 and provides the same to the user. Specifically, the processed broadcast signal is output through a display or output to an external display (eg, an external TV) connected through an external output terminal.

The input unit 150 transmits a user command received from the remote controller to the controller 180, and the controller 180 controls the overall operation of the TV 100 according to the user command received from the input unit 150.

The storage unit 160 is a storage medium that stores programs, data, and information necessary for the controller 180 to control the operation of the TV 100 to be described later.

The image capture unit 170 captures an image output at a specific time point as an image under the control of the controller 180.

The image capture unit 170 is composed of a frame extractor 172, a converter 174, and an editor 176.

The frame extractor 172 extracts only a specific frame from the broadcast screen, and the converter 174 converts the extracted frame into a specific image file format, for example, a bitmap format. The editor 176 edits the converted bitmap file to be optimized for printing. A detailed description of the image capture unit 170 will be described later in detail with reference to FIG. 3.

The controller 180 controls the broadcast receiver 110, the broadcast processor 120, and the display information generator 130 so that a broadcast according to a user command is received and displayed on the screen.

In particular, in the present invention, when the user inputs a command to print the screen through the input unit 150, the controller 180 controls the image capture unit 170 to convert the image into an image file, and then again the Bluetooth transceiver It transmits to the printer 210 connected to the outside through the 190. Detailed description thereof will be described below with reference to FIG. 3.

Under the control of the controller 180, the Bluetooth transceiver 190 transmits various files, and more particularly, the image file to a printer connected wirelessly.

3 is a flowchart provided to explain a process of wirelessly transmitting a screen captured by the TV 100 to the printer 210 according to an embodiment of the present invention.

The first TV 100 is connected to the printer 210 by the Bluetooth communication method (S310). As described above with reference to FIG. 2, the TV 100 according to the present embodiment has a built-in Bluetooth transceiver 190, and the printer 210 has a built-in Bluetooth transceiver 215. Wireless connection is possible between the liver. The wireless connection with the printer 210 may be performed when a specific event is made or when a specific command is input. However, when the TV 100 is turned on, the printer 100 searches for a printer having a Bluetooth transceiver within the communication range. It is desirable to make a connection.

After that, the TV 100 displays an image (S320). At this time, the video may be a broadcast screen transmitted from a broadcasting station, or may be a video input from an external AV device such as a DVD.

When the user watches the broadcast on the TV 100 and the scene he / she wants, the user inputs a print button (S330). That is, when a favorite celebrity comes out and wants to print the figure of the celebrity, or an important article in the news comes out and wants to see in detail. For reference, the print button may be a key provided separately on the remote control, and a method of selecting among OSD menus on the TV screen may be selected.

When the print button is input (S330-Y), the image capture unit 170 of the TV 100 captures the displayed image (S340).

4 is a flow chart for explaining in detail the capture step, step S340.

At the start of capture, it is first checked whether the video is interlaced or progressive (S341).

In general TV broadcasting, when displaying one image regardless of whether it is NTSC or PAL, only half of the horizontal line is displayed in one image frame. This is called interlacing. In other words, the interlacing method divides one frame into two fields and alternately displays images on the screen. In the case of NTSC system of 480 lines (exactly 487 valid lines for 525 lines), one frame is divided into two fields divided into 240 lines, and these 240 lines are alternately displayed every 1/60 seconds. It is displayed (480 / 60i). In the case of this type of screen, a black line is shown in the middle when capturing a specific scene, and thus preprocessing is required.

Progressive scanning, on the other hand, displays a 480-line image every 1/30 second, giving you a complete image of the entire frame, so you can convert a particular scene directly into an image.

Therefore, if the currently output image is an interlacing method (S341-Y), the frame extracting unit 172 in the image capturing unit 170 combines the two fields and extracts them into one frame (S342).

On the other hand, if it is not the interlacing method (S341-N), that is, the progressive method, the frame extractor 172 in the image capturing unit 170 extracts the frame directly from the field (S343).

Thereafter, the converter 172 converts the frame into a specific image file, for example, an image of a bitmap file format (S344).

Then, the editing unit 176 edits the image so as to be output well (S345). For example, editing may be performed such as color correction, cropping to a size suitable for A4 paper size, or reduction or enlargement of an image.

3, the captured image is stored in the storage unit 160 in the form of an image file (S350).

The control unit transmits the image captured in step S340 to the printer connected in step S310 through the Bluetooth transceiver 190 (S360). If there is no printer connected, the captured image is stored only in the storage unit 160, and a message indicating that there is no printer may be transmitted to the printer at that time when the printer is connected in the future.

When the image is transmitted to the printer in step S360, the printer 210 outputs the received image (S370). Recently, it is possible to directly output data from a memory card or a digital camera without a printer connected to a PC, etc. Also, it is also possible for a person skilled in the art to directly output an image transmitted via Bluetooth.

Bluetooth mentioned in this embodiment corresponds to an example as a wireless personal area network. Therefore, the present invention is not limited to Bluetooth, and any wireless communication network other than Bluetooth may be used, in particular, wireless private networks such as IrDA, UWB, ZigBee, and the like.

In addition, in the present embodiment, it is referred to convert to a bitmap file in step S344, but the bitmap is also just an embodiment for convenience of description, and various image file formats are possible even if the bitmap is not. For example, image files such as JPEG (Joint Photographic Expert Ground), GIF (Graphics Interchange Format), PNG (Portable Network Graphics) can be anything.

In addition, although the preferred embodiment of the present invention has been shown and described above, the present invention is not limited to the specific embodiments described above, but the technical field to which the invention belongs without departing from the spirit of the invention claimed in the claims. Of course, various modifications can be made by those skilled in the art, and these modifications should not be individually understood from the technical spirit or the prospect of the present invention.

1 is a view showing a TV and a printer to which the present invention is applicable;

FIG. 2 is a detailed block diagram of the TV shown in FIG. 1;

3 is a flowchart provided to explain a process of wirelessly transmitting a screen captured by a TV to a printer according to an embodiment of the present invention; and

4 is a flowchart for describing the capture step of FIG. 3 again in detail.

Explanation of symbols on the main parts of the drawings

100: TV 110: broadcast receiver

120: broadcast processing unit 130: display information generation unit

140: output unit 150: input unit

160: storage unit 170: image capture unit

172: frame extraction unit 174: converter unit

176: editing unit 180: control unit

190: Bluetooth transceiver

Claims (9)

Capturing an image being output by the display device as an image; And And transmitting the captured image to an external printer. The method of claim 1, And the display apparatus and the printer are connected by using a wireless private network (WPAN). The method of claim 2, The control method of the display apparatus, characterized in that the wireless private network is Bluetooth. The method of claim 1, The capturing step Extracting a frame; Converting the extracted frames into specific image files, and And editing the converted image file to be suitable for output. The method of claim 4, wherein The frame extraction step If the scanning method of the TV is an interlacing method, the control method of the display device, characterized in that to combine the two fields into a frame. The method of claim 1, And storing the captured image in a storage unit. An image capture unit for capturing an image output at a specific time point as an image; An input unit for transmitting a user command received from a remote controller to a control unit; A Bluetooth transceiver for wirelessly connecting to an external printer and transmitting and receiving data; And And a control unit controlling the capture unit to control the capture unit and to transmit the captured image to an external printer through a Bluetooth transceiver, when the user command to print is transmitted from the input unit. The method of claim 7, wherein The image capture unit A frame extracting unit which extracts a specific frame from the broadcast screen; A converter for converting the extracted frame into a specific image file; And And an editing unit to edit the converted specific image file to be optimized for printing. The method of claim 7, wherein And a storage unit which stores the captured image in a storage unit.

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