Mar 06, 2019 atm-opcode-buffer - Operation Code Buffer access library; atm-screens - ATM Screens service (parsing, binding images etc.) atm-screentext - library for updating on-screen text; atm-state-levels - a helper service to work with ATM state logical levels.
Electron-atmA simple free open-source ATM emulator, written from scratch using ES6 JavaScript, jQuery and framework.The project is not maintained since the Febrary of 2018 as I'm not working with the ATM acquiring systems anymore and not using the app in my day-to-day job since then. I'm not going to fix the bugs and/or implement new features. However, any pull requests are still welcome. Also, if anybody would like to pick up the project and become its maintainer, just drop me an to discuss the ownership transfer.Profile selection on application start:ATM tab:States tab:Financial Institutions tab:Cards management tab:To UseWindows and MacOS build installers may be downloaded from.You may also build the app from sources.
To do this, you'll need and (which comes with ) installed on your computer. From the command line. # Clone this repositorygit clone Go into the repository cd electron-atm# Install dependenciesnpm install# Check the test casesnpm test # Run the appnpm start Reasons of why this application was developedSome reasons for the appearance of this application are described.
Jitter of a Program Clock Reference (PCR) in a transport stream of an Moving Picture Experts Group (MPEG) signal transmitted over Asynchronous Transfer Mode (ATM) system is reduced by correcting PCR to PCR−(T−δ) if PCR−STC T−δ−Δ is true and (PCR−STC)0, correcting PCR to PCR+(T−δ) if PCR−STC T−δ−Δ is true and (PCR−STC)T−δ−Δ is false. The program clock reference received is represented by PCR, a system time clock at the time when the program clock reference is received is represented by STC, a period of a transport stream packet at an output terminal of an MPEG encoder is represented by T, a packet transmission time of the transport stream packet at an input terminal of the apparatus is represented by δ, and a tolerable range is represented by Δ. 0-11-14Slattery et al.34222000-09-05Anderson et al.30061999-09-28Maturi et al.31141999-03-09Moon35431998-08-04Cloutier34971998-06-30Block et al.38411997-09-16Haskell et al.7-07-29Davenport et al.7-07-29Allen33881997-06-17Wodhead et al.7-03-18Huizer33421995-11-14Logston et al.31371995-11-14Zdepski4-02-15Haskell et al.39781993-11-09Fleischer et al.
CA229-01-22EP4-01-05Timing recovery for variable bit-rate video on asynchronous transfer mode (ATM) networks.EP7-10-15Method and apparatus for measuring the jitter of a video program clock reference signal in an MPEG-2 transport streamEP4-10-31100/100A combined intraframe and interframe transform coding method.JP0766814JP08149428TRANSMITTING DEVICE AND RECEIVING DEVICEJP8168052JP8321836JP0099215JP0964874JP9116563WOA11995-07-20TIME STAMP CORRECTION IN ATM NETWORKJPH091-05-02JPH0-01-10JPH083-12-03JPH081-06-25JPH081-06-07JPH09-03-07JPH07-03-10. What is claimed is:1. BACKGROUND OF THE INVENTION1.
Field of the InventionThe present invention relates to a method and apparatus for reducing a jitter of a program clock reference of an MPEG signal transmitted according to MPEG (Moving Picture Experts Group) over ATM (Asynchronous Transfer Mode) system. The present invention also relates to an MPEG decoder having the apparatus for reducing the jitter of a program clock reference of an MPEG signal transmitted according to MPEG over ATM system.2. Description of the Related ArtIn the MPEG 2 system standard which is an storage/transmission standard of moving pictures, STC (System Time Clock) is used in an encoder for encoding audio and video signals into code and a decoder for decoding code into audio and video signals.
The decoder starts its decoding operation using code in a main buffer and outputs decoded data to a reorder buffer at the time when STC becomes the same as DTS (Decoding Time Stamp) which corresponds to the codes in the main buffer. Further, the decoder outputs the decoded data in the reorder buffer at the time when STC becomes the same as PTS (Presentation Time Stamp) which corresponds to the decoded data. SCR (System Clock Reference) and PCR (Program Clock Reference) are defined as a time stamp for synchronizing STC of the decoder with STC of the encoder. The transmission interval of PCR must be set to 100 msec or less according to MEPG 2 standard.Further, in MPEG 2 system, a transport stream (TS) is known as one of transmission streams. The transport stream consist of packets having a fixed length of 188 bytes, and such construction is adapted on the assumption that transmission is performed over ATM system or through digital broadcast system. A payload or adaptation field is allocated to a portion other than a packet header of the transport stream packet. The adaptation field has a function for transmitting information such as PCR and the like and a stuffing function.A system for transmitting a signal of MPEG 2 over ATM is known as MPEG over ATM.
![Atm Atm](/uploads/1/2/5/5/125504908/693329143.jpg)
When a transport stream is transmitted over ATM, the transport stream is sent to AAL (ATM Adaptation Layer) to be processed into an ATM cell. An AAL 1 cell, an AAL 2 cell, and an AAL 5 cell are selected as the ATM cell.
For the processing a transport stream into an ATM cell, there may be considered a case where one transport stream packet is processed into five AAL 5 cells, a case where two transport stream packets are processed into eight AAL 5 cells and a case where three transport stream packets are processed into twelve AAL 5 cells.