The DigiStream- provides a very cost effective and portable solution for Transmitting or Receiving Transport Stream /
MPEG2 Stream. Can be used for testing and Interfacing
to “SPI interfaced” equipment. It operates via PC USB
port giving the flexibility of being used with Desktop PC or
Laptop PC and ease of interfacing. Its performance
matches most of the stand-alone equipments or PC card
based systems in the market and provides additional functionalities. Believed to be the first USB based SPI
transport streamer.

In addition to the SPI-LVDS interface DigiStream- provides a
SPI - TTL. This allows for developers to test various units with
TTL TS interface. Easy to install and develop applications.

• Key Specifications and Features
  
  - Interface Standard SPI-LVDS (Bidirectional)
  - TTL proprietary (Bidirectional)
  - Streams MPEG-2 Transport Stream via SPI-LVDS port and/or SPI-TTL port
  - Streaming Software Development Kit (SSDK) (optional)
  - Receiving Software Development Kit (RSDK) (optional)
  - Interface to PC Desktop / Laptop via USB port
  - Variable or fixed data rate selectable
  - Configurable data rate up to 192 Mbit/s –supports HDTV
  - Adjustable output clock (Auto/Manual)
  - User-friendly User Interface for streaming MPEG2 / TS streams
  - Standards supported are ATSC & DVB (Software Options)
  

  up

• The package contains
  
  1. In the CD
  - Stream Player software
  - Windows 2000/2003/XP drivers
  - Streaming Software Development Kit (SSDK)
  - Examples of SDK-API usage programs for customer Application development.
  
  2. USB cable
  
  3. DigiStream- unit
  

  up

• Main Parameters

• SPI Port Interface
  
  

• Applications
  
  - Digital Broadcast Test Platform
  - Interfaces to LVDS-PSI equipments to function as receiver or transmitter
  - Interface to modulators to set up DTV broadcast.
  - Production Test Rigs; Interfaces to Tuner modules (DUT)
  - Use 2 PCs with 2 DigiStream- to perform iTV application verifications
  - Settop Box evaluation and Test
  - …lots more

Application Scenarios:

• PC Specification
  
  - Port: USB 2.0
  - Processor Speed > 1 GHz
  

  up

• DVB / ATSC Transport Stream and MPEG2
  
  Transport Stream (TS) for the world broadcast standards ATSC and DVB is based upon
  MPEG-2 video and their corresponding audio standards.
  MPEG-2 standard specifies the compression techniques used for packing video and audio
  for storage and transmission.
  ATSC and DVB standards also define how TS are transmitted through various transmission
  mediums; cable (C), satellite (S) and terrestrial (T) channels.
  TS define the format for packaging data for transmitting and receiving in digital channel.
  This may include such details as system information, program guide, scrambling information etc.
  Several interface standards are defined to convey the TS data over the medium. Synchronous
  Parallel Interface using Low Voltage Differential Signals (SPI-LVDS) defined to support medium
  distance communications, using 25-pin type D connector shown in Fig 1.
  
  
  
  
  

  up

DigiStreamAlpha Version 2