[go: up one dir, main page]
More Web Proxy on the site http://driver.im/

KR930007267A - Buffer control device in subband coding - Google Patents

Buffer control device in subband coding Download PDF

Info

Publication number
KR930007267A
KR930007267A KR1019910016300A KR910016300A KR930007267A KR 930007267 A KR930007267 A KR 930007267A KR 1019910016300 A KR1019910016300 A KR 1019910016300A KR 910016300 A KR910016300 A KR 910016300A KR 930007267 A KR930007267 A KR 930007267A
Authority
KR
South Korea
Prior art keywords
band
signal
data
buffer control
frequency band
Prior art date
Application number
KR1019910016300A
Other languages
Korean (ko)
Inventor
유병구
Original Assignee
이헌조
주식회사 금성사
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 이헌조, 주식회사 금성사 filed Critical 이헌조
Priority to KR1019910016300A priority Critical patent/KR930007267A/en
Publication of KR930007267A publication Critical patent/KR930007267A/en

Links

Landscapes

  • Compression, Expansion, Code Conversion, And Decoders (AREA)

Abstract

본 발명은 디지탈 영상신호를 압축하고 고정의 비트율로 압축된 데이타를 유지, 전송시키는 버퍼콘트롤장치에 관한 것으로, 압축된 영상신호를 채널용량을 초과하지 않도록 제어하여 채널로 전송하는 것을 요지로 한다.The present invention relates to a buffer control apparatus for compressing a digital video signal and maintaining and transmitting compressed data at a fixed bit rate. The present invention is directed to controlling a compressed video signal not to exceed a channel capacity and transmitting the same to a channel.

따라서 본 발명은 서브밴드 코딩을 통해 입력영상신호를 복수개의 주파수 대역으로 분할한 후 부호화하고, 복수개의 대역신호 중 인간의 시각적 특성관점에서 중요한 대역신호의 우선순위에 따라 채널용량에 맞추어 전송할 대역신호들을 선택하는 것을 요지로 한다.Accordingly, the present invention divides an input video signal into a plurality of frequency bands through subband coding and encodes the signal, and transmits a band signal according to channel capacity in accordance with the priority of a band signal important in view of human visual characteristics among the plurality of band signals. The point is to choose them.

또한 본 발명은 영상압축 시스템에서 서브밴드 코딩을 사용하영 영상신호를 부호화한 후 채널용량에 맞추어 전송하는 것을 용도로 한다.In addition, the present invention is to use the sub-band coding in the video compression system to encode the video signal and then transmit according to the channel capacity.

Description

서브밴드 코딩에서의 버퍼콘트롤 장치Buffer control device in subband coding

본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음Since this is an open matter, no full text was included.

제2도는 본 발명 버퍼콘트롤장치의 블럭도.2 is a block diagram of a buffer control apparatus of the present invention.

제3도는 본 발명 버퍼콘트롤 장치의 4개 주파수 대역 분할에 대한 개략도.3 is a schematic diagram of four frequency band divisions of the present invention.

제4도는 본 발명 버퍼콘트롤장치의 16개 주파수 대역분할에 대한 개략도.4 is a schematic diagram of sixteen frequency band divisions of the present invention.

제5도는 본 발명 버퍼콘트롤장치에 있어서, 대역부호화기 A의 상세 블럭도.5 is a detailed block diagram of a band encoder A in the buffer control apparatus of the present invention.

제6도는 본 발명 버퍼콘트롤장치에 있어서, 대역부호화기 B의 상세 블럭도.6 is a detailed block diagram of a band encoder B in the buffer control apparatus of the present invention.

Claims (2)

디지탈 영상신호를 복수개의 주파수 대역으로 분할하는 대역분할기(1)와, 상기 복수개의 주파수 대역신호중 최저주파수 대역신호를 DPCM부호화하여 차신호를 출력시키는 대역신호부호화기 A(2)와, 최저주파수 대역신호를 제외한 나머지 대역신호를 PCM화하고 양자화시켜 제로가 아닌 값만을 출력시키는 대역신호부호화기 B(4)와, 차신호를 가변길이의 코드로 바꾸어 주며 신호의 위치정보를 부호화하는 가변길이부호화기(3),(5)와, 채널로 전송할 데이타를 일시적으로 저장하는 버퍼(6)와, 인간의 시각특성을 고려하여 중요한 대역신호로부터 우선순위에 따라 채널용량을 초과하지 않도록 전송할 대역신호들을 선택하고, 선택된 대역신호로부터 부호화되어 상기 버퍼(6)에 저장된 데이타를 출력시키는 전송대역선택기(7)로 구성하여 된 것을 특징으로 하는 서브밴드 코딩에서의 버퍼콘트롤장치.A band splitter (1) for dividing the digital video signal into a plurality of frequency bands, a band signal encoder (A) (2) for outputting a difference signal by DPCM encoding the lowest frequency band signal among the plurality of frequency band signals, and the lowest frequency band signal A band signal encoder B (4) which PCMizes and quantizes the remaining band signals except for and outputs only non-zero values, and a variable length encoder (3) converting the difference signal into a variable length code and encoding position information of the signal. (5), a buffer (6) for temporarily storing data to be transmitted to the channel, and the band signals to be transmitted so as not to exceed the channel capacity according to the priority from the important band signals in consideration of human visual characteristics, and selected Characterized in that it comprises a transmission band selector (7) for outputting data stored in the buffer (6) encoded from the band signal. The buffer control unit in the bracket band coding. 제1항에 있어서, 저송대역선택기(7)는 저주파대역(B1)부터 고주파대역(BN)까지 부호화하여 얻은 데이타량(BN)을 총기록데이타량(목표값)과 비교하여, 데이타량(BN)이 목표값보다 클 경우는 데이타량(BN)을 한개씩 줄이어 최종적으로 목표값보다 큰 시점에서 데이타량(BN)을 전송하는 대역으로 선택하는 것을 특징으로 하는 서브밴드 코팅에서의 버퍼콘트롤장치.The method of claim 1, as compared to jeosong band selector (7) is a low frequency band (B 1), amount of data obtained by coding from to a high frequency band (B N), (B N), the total recording data amount (target value), the data If the amount of (B N) is greater than the target value, the data amount (B N) for one by one line, followed finally in a large point than the target value, the data amount (B N) a sub-band coating, characterized in that the transmission band selected for the Buffer control device ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.※ Note: The disclosure is based on the initial application.
KR1019910016300A 1991-09-18 1991-09-18 Buffer control device in subband coding KR930007267A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1019910016300A KR930007267A (en) 1991-09-18 1991-09-18 Buffer control device in subband coding

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1019910016300A KR930007267A (en) 1991-09-18 1991-09-18 Buffer control device in subband coding

Publications (1)

Publication Number Publication Date
KR930007267A true KR930007267A (en) 1993-04-22

Family

ID=67433386

Family Applications (1)

Application Number Title Priority Date Filing Date
KR1019910016300A KR930007267A (en) 1991-09-18 1991-09-18 Buffer control device in subband coding

Country Status (1)

Country Link
KR (1) KR930007267A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10621899B2 (en) 2016-10-12 2020-04-14 Samsung Electronics Co., Ltd. Display apparatus and method of controlling thereof

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10621899B2 (en) 2016-10-12 2020-04-14 Samsung Electronics Co., Ltd. Display apparatus and method of controlling thereof

Similar Documents

Publication Publication Date Title
KR970701984A (en) Buffer management in variable bit-rate compression systems
JP2661985B2 (en) Digital video signal encoding device and corresponding decoding device
EP0409248A2 (en) Signal encoding apparatus
KR960006761B1 (en) Transform coding & decoding method incorporating adpatively selecting transform method
DE69225100D1 (en) Reduction of additional information in the case of subband coding methods
KR970060176A (en) Encoding device, encoding method, transmission device, transmission method and recording medium
KR960036786A (en) Video signal coding device
MY122320A (en) Constant bitrate real-time lossless audio encoding and decoding by moving excess data amounts
AU3531695A (en) Encoding and decoding of a wideband digital information signal
KR940023242A (en) Adaptive Compression of Digital Video Data
CN1153365C (en) Transfer system adopting different coding principle
KR930024306A (en) Data compression stretching device
KR930007106A (en) Encoding system
KR940023044A (en) Apparatus for recording and / or playing or transmitting and / or receiving compressed data
KR950002473A (en) Adaptive Quantization Method and Apparatus
RU94046112A (en) METHOD FOR REDUCING THE DATA NUMBER WHEN TRANSMITTING AND / OR ACCUMULATING DIGITAL SIGNALS COMING FROM MULTIPLE RELATED CHANNELS
JPH0773249B2 (en) Speech encoding / decoding transmission method
KR960013079A (en) Image information encoding / decoding device to secure minimum compression rate and limit data rate
KR930007267A (en) Buffer control device in subband coding
US4957688A (en) System for the transmission of video signals with adaptive code word allocation, and also a transmitter and a receiver suitable for the system
KR960009723A (en) Transmitter and Receiver of Video Signal Transceiver System with Low Data Rate
KR100210378B1 (en) A layered video encoder using dct
KR970009387A (en) Image Coding System Using Adaptive Vector Quantization
KR100203640B1 (en) Encoding path control apparatus for image encoding with parallel processing
JPH01158825A (en) Adaptive type coding control system

Legal Events

Date Code Title Description
A201 Request for examination
E902 Notification of reason for refusal
E601 Decision to refuse application