jog shuttle wheel usb
Posted April 23, 2010
By admin
jog shuttle wheel usb
jog shuttle controllers
Posted March 15, 2010
By admin
jog shuttle controllers
Video Testing for STB Manufacturers
This paper explores the challenges Video Equipment Manufacturers face when assessing video quality. Assessing video quality ultimately depends on the customer’s reaction on their new display (PC, POD, TV, etc.).
Set-top box (STB) functions are continually advancing, but the customers’ reactions are usually centered on the quality of the picture. So testing is increasing important. The test setup simply stated is
* Start with a known video sequence.
* Decode the processed video sequence.
* Capture the processed video sequence.
* Display a “gold standard” and processed video sequences.
* Bring in experts to subjectively vote.
Complexity arises as
* New Video Processing systems may need new equipment to playback the video sequences.
* The original and processed video sequences should be displayed in random orders.
* Expert viewers are expensive and do not produce repeatable results.
So a need arises to perform quantitative, repeatable objective scoring of the video.
Previous Options
Each vendor builds unique test equipment to verify their new algorithms. So the first job is to debug the test equipment before it can be used to verify a new design. Debugging the test equipment can take as long if not longer than debugging the display equipment.
Easier Solution
To streamline the process, equipment for video quality testing needs to be defined, which can capture, play, and analyze any two video sequences. Further, as new input/output modules are continuously under development, the test equipment should use an open-architecture approach to ease upgradeability.
* Capture video sequences in as many formats as possible.
* Convert all video sequences to user-selectable resolution.
* Translate all video sequences to uncompressed Y’CbCr 4:2:2 or RGB 4:4:4.
* Support 8 and 10-bit data paths with upgradeability to future 12-bit modes.
* Store the video sequences as frames (fields) so that they can be played at any rate.
* Display the video sequences in real time in multiple viewing modes.
* VTR controls – play, shuttle, jog, pause
* Integer-based zoom & pan.
* Apply objective metrics to the video sequences.
* Export pieces of video sequences to further analyze off-line.
* Use a standard operating system so that the operator can run 3rd party analysis applications.
To further simplify the work flow, any video sequence can be played; while capturing another video sequence, thus, combining the video server and capture device into one unit. By doing this, the original source is already inside the test equipment so captured content alignment is easily obtained.
The original and processed video sequences can be displayed – side-by-side, mirrored, or seamless split – on a single display. This eliminates the need to calibrate two separate displays.
ClearView applies various objective metrics to the video sequences, generates graphs, and calculates an objective score. ClearView includes PSNR, Spatial Information and Temporal Information (as proposed in ITU-T P.9210). These metrics are the basis for more sophisticate metrics like VQM, JND, which are being analyzed by organizations like VQEG, VPQM, and SMPTE.
ClearView displays multiple video sequences, even if they are played at different rates (i.e. mobile phone video compared to TV) for the expert viewers; while recording the objective metric scores. While the MOS cannot be repeated, the objective metric can, easily and readily.
Since the system is based on an open, Windows-based architecture, any objective measurement algorithm can be modeled off-line using the stored video sequences.
Benefits
* Repeatable tests, quantitative results, and a streamlined setup.
* Analyze 2 video sequences in real-time up to 1080P.
* Input virtually any file type or capture from any digital or analog source.
* Multiple viewing modes are presented on a single display – no need to calibrate 2 separate Television displays to compare video sequences.
* Integrated uncompressed, high definition Video Server and Capture Device.
* Ability to Play 2 fully uncompressed, HD Streams in Real-Time.
* Hybrid Solution with Integrated Objective Metrics and Subjective Viewing Modes.
Case Examples
In all of the following examples, the tests can be performed using software mockups of the actual hardware unit. ClearView exports video sequences as files and accepts video files as inputs.
A Set-top Box (STB) or Decoder manufacture needs to
* Capture a “Golden” video stream or the results of one of their competitors.
* Capture the output of their unit.
* Visually inspect the “Golden” stream compared to their decoded stream.
* Generate a Score for pass/fail.
Summary
ClearView takes advantage of the high-reliability of today’s off-the-shelf computer platforms. This ensures that products are made with state-of-the-art hardware, while at the same time avoiding the high cost of custom designs.
ClearView provides broadcasters, video researchers, compression developers with the unique ability to capture, play-out, and analyze video sequences. Objective measurements are generated and logged for repeatable tests.
About the Author
Bill Reckwerdt, Vice President Marketing & Business Development
Bill’s extensive career spans 20 years in the digital video and medical imaging industries. He brings to Video Clarity expertise in compression, digital transmission, and video servers.
To contact Bill directly send an email to bill@videoclarity.com or visit our http://www.videoclarity.com
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usb jog wheel
Posted March 13, 2010
By admin
usb jog wheel
Lg U400: Scroll the Wheel and Enjoy…
Meet the latest LG U400, a smooth and stylish 3G mobile phone. The outer look of the phone is enhanced by the sleek and bright 2 inch screen with a jog wheel. Along with its uncompromising look the handset comes with a stunning list of features. Ranging from its high quality music player to 2.0 megapixel camera, the LG U400 gives you an opportunity to redefine the tenets of style. Do you like the hottest DJ scratching feature? If you want to enjoy all the music genres from classical to samba and hip hop to jazz, you are sure going to love the new 3G U400 phone from LG. The built-in media player allows you to enjoy all the music. Use the jog wheel for scratching, which acts in a similar way to that on an iPod, and store as many songs as you can using an additional MicroSD memory card slot.
Grab the special moments with the 2.0 megapixel camera, digital zoom, integrated flash and lots more. Click the button and catch the action in sharp digital video. Get the natural view of what you see with its high TFT display. If you want to add more spice to your dazzling images, connect the handset to a PC via USB port and improve the photos the way you want. The handset also comes with a VGA camera for live two ways video communication often called as video calling. The 3G features have definitely brought a revolution in the mobile world. It provides high speed connectivity so that you can enjoy fast downloading of music, games, video clips and other data with up to 384kbs.
Bring the world a little bit closer with the Internet and video calling features. You can now send text, pictures, voice clips from your own 3G LG U400. Send and receive e-mails, share data, browse the Internet, etc. Use Bluetooth technology for wireless experience and lots more. The user-friendly keypad with jog wheel allows you to navigate all the features and technologies that only need a touch of your finger. There are mobile phone deals available on different UK networks, get the latest 3G LG U400 handset now and start scrolling!
LG U400
About the Author
Caitlin Lucy is the webmaster of http://www.3mobileshop.co.uk and specializing in the different field
of polyphonic ringtones, mobile phone games and mobile phone wallpapers and
,mobile phone, mobile deals, Mobile phone
Pioneer CDJ-400 Effects
shuttle jog usb
Posted January 19, 2010
By admin