KR100539523B1 - apparatus for reserved record in digital TV - Google Patents

Abstract

The reservation recording apparatus of digital TV is to transmit a reservation recording control signal in a vertical blanking interval section by encoding by using an NTSC encoder that can be received from a VTR. Generating a code in the form of a gap data by converting a first control unit for extracting related information, a first external memory for storing the recording related information output from the first control unit, and recording related information output from the first control unit; An NTSC encoder which carries caption data including recording related information generated by the code generator in VBI information, a VBI information extracting unit which extracts VBI information from a signal output from the NTSC encoder; A caption information extractor extracting caption information from the VBI information extractor, and the caption information extractor The second control unit manages the reservation recording information according to the caption information extracted from the second control unit, and a second external memory for storing the reservation recording information output from the second control unit.

Description

Reserved recording device of digital TV (Ｄｉｇｉｔａｌ ＴＶ) {apparatus for reserved record in digital TV}

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to digital TV, and more particularly, to a reservation recording apparatus for digital TV.

Digital broadcasting can provide a better service to the user by transmitting a clear picture quality and sound quality close to the CD level than the conventional analog broadcast.

In addition, information is provided to facilitate the use of the receiver by users without expertise, such as the Electronic Program Guide.

The electronic program guide information is included in resource and subscriber management system (RSMS) data, and the RSMS data includes program specific information (PSI) and additional information.

The PSI information includes PMT, CAT, etc. necessary for performing the basic operation of the receiver. The additional information includes NIT, SDT, TDT, NIT, SDT, TDT, and the like. This is the case with EIT.

Commonly referred to as program guide, users can easily decode and output the information such as PID, start time, broadcaster, program size (by age), type of image (4: 3 or 16: 9) described in the EIT information. To make the receiver available.

Hereinafter, a reservation recording apparatus for a digital TV according to the prior art will be described with reference to the accompanying drawings.

1 is a diagram illustrating a connection configuration between an independent digital receiving apparatus of a digital TV according to the prior art and an analog VTR. A digital decoder 1 for digitally decoding and outputting a received signal, and the digital decoder An NTSC encoder 2 for decoding and outputting the signal decoded in (1) into an NTSC signal, and an analog VTR (3) for storing the NTSC signal decoded in the NTSC encoder (2).

FIG. 2 is a diagram illustrating a connection configuration for reservation recording between a standalone digital receiver and a VTR of a digital TV according to the prior art, and includes a standalone receiver microprocessor that outputs information for recording obtained from an electronic program guide. 11), an external command code processor 12 for transmitting information for recording output from the standalone receiver microprocessor 11 as an infrared signal corresponding thereto, and an infrared ray transmitted from the external command code processor 12. And a VTR light receiver 13 for receiving a signal and outputting a signal corresponding thereto, and a VTR microprocessor 14 for controlling recording according to the signal output from the VTR light receiver 13.

3 is a diagram illustrating a menu example of a standalone digital receiver of a digital TV according to the prior art.

The operation of the reservation recording apparatus of the digital TV according to the related art configured as described above will be described in detail with reference to the accompanying drawings.

First, the digital decoder 1 digitally decodes and outputs a received signal.

The NTSC encoder 2 then decodes the signal decoded by the digital decoder 1 into an NTSC signal and outputs it.

Accordingly, the analog VTR 3 stores the NTSC signal decoded by the NTSC encoder 2.

Meanwhile, when the user inputs the main menu key of the remote controller, as shown in FIG. 3, the main menu screen is displayed.

In this state, when the user selects " 1. Broadcasting guide ", the digital broadcasting receiver decodes the transmitted EIT (Event Information Table) to display the broadcast guide screen, and selects " 3. Classification " Menus are displayed.

The classification allows the user to selectively provide only the type of program guide information preferred by the user.

Here, in the case of domestic satellite broadcasting, the EIT is divided into four types. First, EIT1 including information of a program to be broadcast within 4 hours from the current time, and EIT2 including program information to be broadcast within 8 hours thereafter. Within 12 hours of the time), or EIT containing program information to be broadcast within 60 hours (2.5 days) thereafter (currently within 72 (3 days) time of the current time), and finally program information to be broadcast within 96 hours after EIT3. It consists of EIT4 (within 168 hours (7 days) of current time).

That is, the user may be provided with broadcasting schedule program information within 168 hours (7 days) from the current time.

Thereafter, when the user inputs the setting key of the remote controller in the user guide screen state, detailed information (start time, grade, type of image, etc.) corresponding to the same is displayed.

In the conventional recording system of the digital TV according to the prior art, not only the information required for recording generated from a separate processing device is easily lost due to reflection and control signals such as a remote controller of another device. In order to prevent such a loss, it is inconvenient to maintain a separate control device close to the VTR receiver and a problem of fixing the position of the external processing device.

Accordingly, the present invention has been made to solve the above problems, the digital TV to transmit the reserved recording control signal in the vertical blanking interval (Vertical Blanking Interval) by encoding by using the NTSC encoder that can be received in the VTR ( It is an object of the present invention to provide a reservation recording device of a digital TV).

Features of a reservation recording apparatus of a digital TV according to the present invention for achieving the above object, the first control unit for extracting the recording-related information from the program guide information, and the recording-related output from the first control unit A caption including a first external memory for storing information, a code generator for converting the recording-related information output from the first control unit to generate a code in the form of gap data, and recording-related information generated by the code generator. An NTSC encoder for loading data into VBI information, a VBI information extractor for extracting VBI information from a signal output from the NTSC encoder, a caption information extractor for extracting caption information from the VBI information extractor, A second control unit which manages the reserved recording information according to the caption information extracted by the caption information extracting unit, and the output from the second control unit; There is composed by a second external memory for storing information about recorded.

Hereinafter, a preferred embodiment of a reservation recording apparatus for a digital TV according to the present invention will be described with reference to the accompanying drawings.

4 is a diagram illustrating an embodiment of a reservation recording apparatus for digital TV according to the present invention. The first control unit 101 extracts recording related information from program guide information, and the first control unit 101. A first external memory 102 for storing the recording related information outputted from the control unit), a code generator 103 for converting the recording related information outputted from the first control unit 101, and generating a code in the form of gap data; And an NTSC encoder (104) for loading caption data including recording related information generated by the code generator (103) into VBI information, and extracting VBI information from a signal output from the NTSC encoder (104). The reserved recording information according to the VBI information extracting unit 105, the caption information extracting unit 106 for extracting caption information from the VBI information extracting unit 105, and the caption information extracted by the caption information extracting unit 106. 2nd to manage It consists of a fisherman 107, the second controller 107, a second external memory 108 for storing the reservation-recording information at the output.

5 is a diagram showing an example of the configuration of a caption data line used in the present invention, FIG. 6 is a diagram showing the structure of caption data used in the present invention, FIG. 7 is a diagram showing a domestic television subtitle code table, and FIG. 8 is a flowchart illustrating a reservation recording process of the independent digital receiver of FIG. 4, and FIG. 9 is a flowchart illustrating the VTR reservation recording process of FIG. 4.

The operation of the reserved recording apparatus of the digital TV according to the present invention configured as described above will be described in detail with reference to the accompanying drawings.

First, when a user selects "detailed information" in the program guide as shown in FIG. 3, selects a program to schedule recording, inputs a setting key of the remote controller, and selects a "scheduled recording" command. 1 The controller 101 determines whether or not the reservation program is reserved, notifies that the reservation recording is set when the corresponding program is already set for reservation recording, and returns to the "detailed information" screen (S1 to S4).

If it is determined that the corresponding program reservation recording setting is not made, the first control unit 101 stores the reservation recording related information in the first external memory 102 and outputs it (S6).

The reservation recording related information is a start time, an end time, and channel information of a corresponding progmae.

The code generator 103 then converts the recording related information output from the first controller 101 to generate a code in the form of caption data as shown in FIGS. 5 and 6.

5 shows that a line containing caption data information has a color signal located after a subcarrier, and then clock synchronization and byte synchronization for synchronization are transmitted, and two bytes of data are located at the second half of the line. Indicates that the lower byte is transmitted in sequence from the byte.

In this case, the code generating unit 103 uses " 1C20h " as the " reserved recording " control code and " 1C21h " as " 1C20h " which is not used in the domestic television subtitle code table for transmitting caption information as shown in FIG. Cancel "control code.

Accordingly, the NTSC encoder 104 drives VTR by outputting caption data including the recording related information generated by the code generator 103 in the VBI information (S7).

On the other hand, if the user selects to cancel the reservation recording in the "detailed information" screen state, the first control unit 101 outputs the reservation recording cancellation information of the corresponding program (S5).

The code generator 103 then converts the reservation recording cancellation information output from the first controller 101 to generate a code in the form of gap data.

Accordingly, the NTSC encoder 104 loads the reserved recording cancellation information of the program generated by the code generator 103 into the VBI information.

Then, the VBI information extractor 105 in the analog VTR extracts the VBI information from the signal output from the NTSC encoder 104 in the independent digital receiver, searches for the existence of the reserved recording information, and then does not have the reserved recording information. If only general caption code information exists, the VBI information extracting unit 105 is extracted and output to the caption information extracting unit 106 (ST1).

If there is the reservation recording information as a result of the search, the second control unit 107 outputs a reservation recording or cancellation control code corresponding to the reservation recording information and a start time and an end time of the general data form.

Accordingly, the caption information extracting unit 106 extracts and outputs general caption code information from the VBI information extracted from the VBI information extracting unit 105 (ST2).

Then, the second control unit 107 searches the signal output from the VBI information extraction unit 105 to determine whether it is a reserved recording or a reserved recording cancellation signal, and if it is reserved recording information, stores it in the second external memory 108. Compare the start time of the scheduled recording program with the time of the internal counter (ST3 to ST5).

If the comparison result is the same, the second control unit 107 controls to start recording of the reserved recording program, drives the VTR to store the reserved recording program, and if not, waits (ST6, ST7).

Thereafter, the second control unit 107 compares the start of the reserved program and the internal time of the recording to control recording of the reserved program to the VTR if it is not the same, and if so, controls the VTR to complete the recording (ST9). .

On the other hand, if the search result of the caption information reserved recording cancellation information, the second control unit 107 controls to delete the start and end start information stored in the second memory 108.

Subsequently, the caption information extracting unit 106 searches whether the reserved recording information exists in the VBI information extracted from the VBI information extracting unit 105 and repeats the above-described process according to the search result.

In addition, when the user selects a program that the user wants to schedule recording and cuts off the power of the independent digital receiving apparatus, the first controller 101 compares the time information using the internal counter with the start time of the scheduled recording scheduled program. The channel information of the reserved program is read out from 102, and the program signal is controlled to be output to the analog VTR.

As described above, in the reservation recording apparatus of a digital TV according to the present invention, a reservation recording control signal is transmitted in a vertical blanking interval by encoding using an NTSC encoder that can be received in a VTR. By doing so, it is possible to minimize an error in the reservation recording process that occurred when a separate external device is used.

In addition, in the reserved recording apparatus of the digital TV according to the present invention, since a small amount of information is transmitted in order to make a reservation recording, reservation recording related information also uses an unused code among caption information that is conventionally used. There is also the effect that no additional circuitry is required for the device and the VTR.

1 is a diagram illustrating a connection configuration between an independent digital receiver and an analog VTR of a digital TV according to the related art.

FIG. 2 is a diagram illustrating a connection configuration for reservation recording between a standalone digital receiver and a VTR of a digital TV according to the related art.

3 is a diagram illustrating a menu example of a standalone digital receiver of a digital TV according to the prior art;

4 is a diagram showing an embodiment of a reservation recording apparatus for digital TV according to the present invention;

5 is a diagram showing an example of the configuration of a caption data line used in the present invention;

6 is a diagram showing the structure of caption data used in the present invention;

7 is a diagram showing a domestic television subtitle code table.

FIG. 8 is a flowchart illustrating a reserved recording process of the standalone digital receiving device of FIG. 4.

9 is a flowchart showing the VTR reserved recording process of FIG. 4.

Explanation of symbols for main parts of the drawings

101: first control unit 102: first external memory

103: code generator 104: NTSC encoder

105: VBI information extraction unit 106: caption information extraction unit

107: second control unit 108: second external memory

Claims (1)

A first control unit which extracts recording related information from program guide information; A first external memory for storing the recording related information output from the first controller; A code generator for converting recording related information output from the first controller to generate a code in the form of gap data; An NTSC encoder which carries caption data including recording related information generated by the code generator in VBI information; A VBI information extraction unit for extracting VBI information from the signal output from the NTSC encoder; A caption information extraction unit for extracting caption information from the VBI information extraction unit; A second control unit managing reserved recording information according to the caption information extracted by the caption information extracting unit; And a second external memory configured to store the reserved recording information output from the second control unit.