VisionMOS mDVR2
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The VM-A008 advanced micro Digital Video Recorder (mDVR2) is one of the world’s smallest single-board multimedia recorders. It has a fully reengineered system that uses the best features of our original mDVR, while reducing the size, power and cost and increasing capability. It is capable of fully stand alone operation or a subsystem in an embedded system. The recording can be done either from a digital video input stream, analog composite (NTSC) video, or optional image sensor. A rich set of interfaces enable a number of configurations for power, control, media storage and display.

One primary feature of the mDVR2 is the H.264 CODEC. The recording is typically stored on an integrated SD card with up to a 32 Gbyte capacity. The system can record in high resolution D1 or standard VGA at 30 frames per second. A multimedia playback system is enabled on board with a digital display port as well as NTSC analog outputs.

As a subsystem the mDVR2 has an extensive set of commands that can operate the system remotely from a microcontroller. This machine interface is capable of controlling all functions of the system, in addition they can generate key feedback that is useful for system interaction. Smart power and media storage controls also allow a microcontroller options on how to manage system resources.

As a stand-alone system a full set of buttons and graphical user interface are available when connected to a display. These functions include video and still image recording, color management, media and port control, and image playback functions.   

 

Features

 

Architecture

The mDVR2 is a highly integrated single-board media computer. It has primary connections compatible with our original mDVR system, making it a direct replacement, and the area is 30% smaller. It combines an advanced multimedia processor, high performance DDR2 memory, and removable media storage. The system has a large number of advanced software features that make its use as embedded or stand alone elegant.

The system may optionally use either digital or composite analog NTSC (D1 or standard definition) video as an input source. Video recording with AAC audio is done in H.264 Xvid format. High quality full resolution recording is done in this advanced format.

Typical video capture is done efficiently with memory filling at a typical rate of about 1GB / hour. A variety of command features enable the user or embedded system to throttle I/P/B frames, compression and frame rate to modify the storage capacity requirements. SD or SDHC media cards up to 32G bytes may be used to store media.

The system has many interface features, designed to accomplish a wide range of potential systems tasks. Commands to control record, playback, user options and power modes are available in button form or via remote control interfaces. Some customization of GUI, user buttons, display options, camera input source and remote commands is also available through VisionMOS consulting services.

  

System Use

 

Ideal use of the mDVR2 is as a portable consumer electronic media recorder.  This very lightweight (< 0.75 oz) system is ideal for integration into compact, mobile, and concealed devices. The system could easily be adapted as an in-line recording system of live video, or as a playback source for pre-recorded material.  Typically the system is used as a subsystem in an existing platform, and may be controlled via a microcontroller through a standard UART command set.  A number of user control options are possible, and may be customized for a specific system use.

 

Output from the system is available through a variety of interfaces.  It can be supplied directly through NTSC analog, direct LCD which can be integrated, or digital output port (YUV) data bus.

 

The mDVR2 has been adapted by customers into existing camera functions including digital binoculars, security systems, vehicle control and other military COTS and industrial systems.  The mDVR2 can be used to enhance an existing platform, be the basis of a new development, or act as a stand alone platform.

 

Availability

 

The mDVR2 platform can be customized by VisionMOS to meet your needs, or is available off the shelf in a number of standard configurations.  The mDVR2 is in pre-production now.