KR100310045B1 - Digital tv system for storing video data - Google Patents

Digital tv system for storing video data Download PDF

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Publication number
KR100310045B1
KR100310045B1 KR1019980011308A KR19980011308A KR100310045B1 KR 100310045 B1 KR100310045 B1 KR 100310045B1 KR 1019980011308 A KR1019980011308 A KR 1019980011308A KR 19980011308 A KR19980011308 A KR 19980011308A KR 100310045 B1 KR100310045 B1 KR 100310045B1
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South Korea
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memory
digital
image data
decoder
output terminal
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KR1019980011308A
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Korean (ko)
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KR19990076382A (en
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이갑근
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윤종용
삼성전자 주식회사
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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
    • H04N21/433—Content storage operation, e.g. storage operation in response to a pause request, caching operations
    • H04N21/4334—Recording operations
    • 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
    • H04N21/41—Structure of client; Structure of client peripherals
    • H04N21/4104—Peripherals receiving signals from specially adapted client devices
    • H04N21/4113—PC
    • 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
    • H04N21/41—Structure of client; Structure of client peripherals
    • H04N21/4104—Peripherals receiving signals from specially adapted client devices
    • H04N21/4117—Peripherals receiving signals from specially adapted client devices for generating hard copies of the content, e.g. printer, electronic paper
    • 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
    • H04N21/41—Structure of client; Structure of client peripherals
    • H04N21/426—Internal components of the client ; Characteristics thereof
    • H04N21/42692—Internal components of the client ; Characteristics thereof for reading from or writing on a volatile storage medium, e.g. Random Access Memory [RAM]

Abstract

PURPOSE: A digital TV system is provided to store a specific picture and to transfer the video data to an external device via an external input/output terminal. CONSTITUTION: A digital TV system comprises a channel decoder(11) for decoding the broadcast signals to the state before modulation, a T/S(Transport Stream) decoder(12) for separating video, audio, and extra data multiplexed in the decoded signals, a format converter(13) for converting the format of the decoded data into a predetermined display format, a first memory(16) for storing the video data of a picture from the format converter, a second memory(18) for storing the video data applied from the channel decoder, the T/S decoder, and the first memory, and a host processor(17) having an external input/output terminal for data transmission and reception and for controlling the output of the video data stored in the first and second memories to an external device via the input/output terminal.

Description

화상데이타의 저장이 가능한 디지탈ＴＶ시스템Digital TV system capable of storing image data

본 발명은 일반방송과 고화질(HD; High Definition)방송이 가능한 디지탈TV시스템에 관한 것으로, 특히 외부 입출력단자를 통해 특정 화면을 저장하거나 프린트할 수 있는 디지탈TV시스템에 관한 것이다.The present invention relates to a digital TV system capable of general broadcasting and high definition (HD) broadcasting, and more particularly, to a digital TV system capable of storing or printing a specific screen through an external input / output terminal.

최근 디지탈 추세에 맞추어 고화질(HD)의 디지탈 방송이 곧 개시될 예정이다. 이 디지탈방송은 현재 통상적인 NTSC, PAL, SECAM등의 일반방송과 함께 곧 이루어질 것이다. 그래서, 일반방송과 디지탈방송을 하나의 셋트에서 수신하여 시청할 수 있는 TV시스템이 제시되었다.In line with recent digital trends, high-definition (HD) digital broadcasting will soon begin. This digital broadcast will soon be accompanied by general broadcasts such as NTSC, PAL and SECAM. Thus, a TV system that can receive and watch a general broadcast and a digital broadcast in one set has been proposed.

일반적인 디지탈TV시스템은 수신되는 방송신호에 실린 채널디코딩후, 디코딩된 신호에 혼합되어 있는 영상데이타, 음성데이타 및 기타데이타를 분리하여 기설정된 디스플레이규격에 맞게 포맷 변환하여 디스플레이한다.A general digital TV system separates video data, audio data, and other data mixed in a decoded signal after channel decoding on a received broadcast signal, and converts the data according to a predetermined display standard for display.

본 발명의 목적은 외와같은 디지탈TV시스템에서 특정화면을 저장하고, 외부 입출력단자를 통해 영상데이타를 외부 기기로 전송할 수 있는 디지탈TV시스템을 제공함에 있다.An object of the present invention is to provide a digital TV system capable of storing a specific screen in a digital TV system such as the outside and transmitting image data to an external device through an external input / output terminal.

도 1은 본 발명에 적용된 디지탈TV시스템을 나타내는 블록도.1 is a block diagram showing a digital TV system applied to the present invention.

※ 도면의 주요 부분에 대한 부호의 설명※ Explanation of codes for main parts of drawing

11 : 채널디코더 12 : T/S디코더11: Channel decoder 12: T / S decoder

13 : 포맷 변환기 14 : OSGM13: format converter 14: OSGM

15 : 디스플레이부 16, 18 : 메모리15: display unit 16, 18: memory

17 : 호스트 프로세서17: host processor

위와같은 목적을 달성하기 위한 본 발명의 특징은 디지털TV시스템에 있어서, 방송신호를 채널디코딩하여 변조되기 이전 상태로 복원하는 채널디코더, 복조된 신호에 다중화되어 있는 영상, 음성 및 기타데이타를 분리하는 T/S디코더, 복원된 영상데이타를 미리 정해진 디스플레이규격으로 포맷 변환하는 포맷 변환기, 상기 포맷변환기로부터 한 화면의 영상데이타가 인가될때마다 이를 저장하는 제 1메모리, 상기 채널디코더와 상기 T/S디코더와 상기 제 1메모리로부터 인가되는 영상데이타를 저장하는 제 2메모리 및 외부기기와 데이터의 송/수신이 가능한 외부 입출력단자를 구비하며, 입출력단자를 통해 외부기기로 상기 제 1메모리 및 상기 제 2메모리에 저장된 영상데이타를 출력하도록 제어하는 호스트 프로세서를 구비하는 디지털TV시스템에 있다.A feature of the present invention for achieving the above object is in the digital TV system, a channel decoder for restoring the broadcast signal to a state before being modulated by decoding the broadcast signal, separating the video, audio and other data multiplexed on the demodulated signal A T / S decoder, a format converter for converting the restored image data into a predetermined display standard, a first memory for storing image data of one screen from the format converter, the channel decoder and the T / S decoder. And a second memory for storing image data applied from the first memory, and an external input / output terminal capable of transmitting / receiving data with an external device, and the first memory and the second memory to an external device through an input / output terminal. There is provided a digital TV system having a host processor for controlling to output the image data stored in.

이하 첨부된 도면을 참조하여 본 발명의 바람직한 일 실시예를 상세히 설명하겠다.Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.

도 1은 본 발명이 적용된 디지탈TV시스템의 구성도이다. 도 1에 나타낸 디지탈TV시스템은 디지탈 방송신호를 수신시청할 수 있는 일반적인 디지탈TV시스템의 구성을 모두 포함하면서, 방송신호를 입력받는 채널디코더(11)와, 선택된 채널에 해당하는 방송신호로부터 영상데이타를 분리하는 T/S디코더(Transport Stream Decoder)(12)를 구비한다. 또한, T/S디코더(12)에 의해 분리된 영상데이타를 인가받아 미리 설정된 디스플레이 규격에 맞게 포맷 변환하는 포맷변환기(13), 포맷 변환된 영상신호에 그래픽(graphics) 내지 문자등의 OSD정보를 삽입하는 OSGM(On Screen Graphics Mixer)(14) 및 디스플레이부(15)를 구비한다. 한편, 각 구성의 동작을 전반적으로 제어하는 호스트 프로세서(17)를 구비하며, 이 호스트 프로세서(17)에는 메모리들(16,18)이 연결된다. 그리고, 호스트 프로세서(17)는 외부 입출력단자를 구비하고 있어, 이러한 입출력단자를 통해 컴퓨터, 프린터 등의 연결이 가능하다.1 is a block diagram of a digital TV system to which the present invention is applied. The digital TV system shown in FIG. 1 includes all the configurations of a general digital TV system capable of receiving and receiving digital broadcast signals, and receives video data from a channel decoder 11 receiving a broadcast signal and a broadcast signal corresponding to a selected channel. A separate T / S decoder (Transport Stream Decoder) 12 is provided. In addition, the format converter 13 receives the image data separated by the T / S decoder 12 and converts the format according to a preset display standard, and displays the OSD information such as graphics or characters in the format converted image signal. An on-screen graphics mixer (OSGM) 14 and a display unit 15 to be inserted are provided. On the other hand, a host processor 17 for controlling the overall operation of each component is provided, the memory (16, 18) is connected to the host processor (17). In addition, the host processor 17 includes an external input / output terminal, so that a computer, a printer, or the like can be connected through the input / output terminal.

도 1에서, 채널디코더(11)는 방송신호를 채널디코딩하여 변조되기 이전 상태로 복원한다. 이 복원된 신호는 호스트 프로세서(17) 및 T/S디코더(12)로 출력된다. T/S디코더(12)는 복조된 신호에 다중화되어 있는 영상, 음성 및 기타데이타를 분리하여 호스트 프로세서(17) 및 포맷 변환기(13)로 출력한다. 포맷 변환기(13)는 복원된 영상데이타를 미리 정해진 디스플레이 규격으로 포맷 변환하여 제 1메모리(16) 및 OSGM(14)에 공급한다. 제 1메모리(16)는 호스트 프로세서(17)의 제어하에 인가되는 영상데이타를 압축하지 않고 그대로 저장한다. 한편, 호스트 프로세서(17)는 채널디코더(11) 및 T/S디코더(12)로부터 압축된 영상신호를 입력받아 제 2메모리(18)에 저장한다. 또한, 제 1메모리(16)에 저장된 데이터를 입력받아 저장가능하다. OSGM(14)은 그래픽 또는 문자등의 OSD정보를 CRT상의 원하는 화면위치에 나타낼 수 있도록 OSD정보를 포맷 변환기(13)로부터 공급되는 영상데이타 내에 삽입하여 디스플레이부(15)로 출력한다.In FIG. 1, the channel decoder 11 channel-decodes a broadcast signal to restore a state before it is modulated. The recovered signal is output to the host processor 17 and the T / S decoder 12. The T / S decoder 12 separates the video, audio, and other data multiplexed into the demodulated signal and outputs them to the host processor 17 and the format converter 13. The format converter 13 converts the restored image data into a predetermined display standard and supplies the converted image data to the first memory 16 and the OSGM 14. The first memory 16 stores the image data applied under the control of the host processor 17 without being compressed. The host processor 17 receives the compressed video signals from the channel decoder 11 and the T / S decoder 12 and stores them in the second memory 18. In addition, data stored in the first memory 16 may be received and stored. The OSGM 14 inserts the OSD information into the image data supplied from the format converter 13 and outputs it to the display unit 15 so that OSD information such as graphics or characters can be displayed at a desired screen position on the CRT.

디지털TV를 시청하는 도중 특정 화면을 저장하고자 할 경우, 호스트 프로세서(17)는 저장선택신호를 외부로부터 인가받는다. 호스트 프로세서(17)는 한 화면(프레임)에 대한 데이터를 제 1메모리(16)로부터 읽어내어 제 2메모리(18)에 저장한다. 또한, 호스트 프로세서(17)는 외부 입출력단자를 통해 연결된 컴퓨터 등으로 영상데이타를 전송할 수 있다. 한편, 호스트 프로세서(17)는 채널 디코더(11) 또는 T/S디코더(12)로부터 인가되는 영상데이타를 제 2메모리(18)에 저장한다. 이런 경우, 제 2메모리(18)는 압축된 영상데이타를 저장하므로 데이터저장용량이 적은 메모리를 사용할 수 있다.When the user wants to store a specific screen while watching digital TV, the host processor 17 receives a storage selection signal from the outside. The host processor 17 reads data for one screen (frame) from the first memory 16 and stores the data in the second memory 18. In addition, the host processor 17 may transmit image data to a computer connected through an external input / output terminal. The host processor 17 stores image data applied from the channel decoder 11 or the T / S decoder 12 in the second memory 18. In this case, since the second memory 18 stores compressed image data, a memory having a small data storage capacity can be used.

디지탈TV시스템의 특정 화면을 프린트하고자 할 경우, 호스트 프로세서(17)는 프린트선택신호를 인가받는다. 호스트 프로세서(17)는 제 1메모리(16)에서 한 화면(프레임)의 데이터를 읽어 프린터의 포맷에 맞는 신호로 데이터를 변환한다. 그리고, 외부 입출력단자를 통해 프린터로 출력한다.When the specific screen of the digital TV system is to be printed, the host processor 17 receives a print selection signal. The host processor 17 reads data of one screen (frame) from the first memory 16 and converts the data into a signal suitable for the format of the printer. Then, it outputs to a printer through an external input / output terminal.

상술한 바와같이, 본 발명은 DTV시스템의 메모리를 이용하여 원하는 화면을 저장하고 외부 입출력단자를 통해 원하는 화면을 컴퓨터 등으로 나중에 볼 수도 있고, 원하는 장면을 프린트할 수 있는 효과가 있다.As described above, the present invention can store the desired screen using the memory of the DTV system and later view the desired screen through a computer or the like through an external input / output terminal, and the desired scene can be printed.

Claims (2)

디지털TV시스템에 있어서, 방송신호를 채널디코딩하여 변조되기 이전 상태로 복원하는 채널디코더; 복조된 신호에 다중화되어 있는 영상, 음성 및 기타데이터를 분리하는 T/S디코더; 복원된 영상데이타를 미리 정해진 디스플레이규격으로 포맷 변환하는 포맷 변환기; 상기 포맷변화기로부터 한 화면의 영상데이타가 인가될때마다 이를 저장하는 제 1메모리; 상기 채널디코더와 상기 T/S디코더와 상기 제 1메모리로부터 인가되는 영상데이타를 저장하는 제 2메모리; 및 외부기기와 데이터의 송/수신이 가능한 외부 입출력단자를 구비하며, 입출력단자를 통해 외부기기로 상기 제 1메모리 및 상기 제 2메모리에 저장된 영상데이타를 출력하도록 제어하는 호스트 프로세서를 구비하는 디지털TV시스템.A digital TV system, comprising: a channel decoder for channel decoding a broadcast signal and restoring a state before it is modulated; A T / S decoder for separating video, audio, and other data multiplexed on the demodulated signal; A format converter for converting the restored image data into a predetermined display standard; A first memory for storing image data of one screen from the format changer whenever it is applied; A second memory for storing image data applied from the channel decoder, the T / S decoder and the first memory; And an external input / output terminal capable of transmitting / receiving data with an external device, and having a host processor controlling output of image data stored in the first memory and the second memory to an external device through the input / output terminal. system. 제1항에 있어서, 상기 호스트 프로세서는 화면저장선택신호를 외부로부터 인가받으면, 소정 기간동안 보존이 가능하도록 상기 제 1메모리로부터 현재 화면에 대한 영상데이터를 읽어내어 상기 제 2메모리에 저장되도록 제어하는 것을 특징으로 하는 디지탈TV시스템The display apparatus of claim 1, wherein when the screen storage selection signal is received from an external device, the host processor controls to read image data of the current screen from the first memory and store the image data in the second memory so that the screen storage selection signal can be stored for a predetermined period of time. Digital TV system, characterized in that
KR1019980011308A 1998-03-31 1998-03-31 Digital tv system for storing video data KR100310045B1 (en)

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KR910013533A (en) * 1989-12-22 1991-08-08 경상현 Initialization pattern combining circuit for detecting stuck-open fault of COMS PLA circuit
KR950034144A (en) * 1994-05-23 1995-12-26 배순훈 Editing device of TV receiver
KR19980085972A (en) * 1997-05-30 1998-12-05 배순훈 Television receiver with image storage function

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