|VizionWare Introduces Active Digital HDMI Interconnects|
|Home Theater News Cables News|
|Written by AVRev.com|
|Tuesday, 29 August 2006|
VizionWare, a new Texas-based audio and video digital interconnect manufacturer, has created advanced digital interconnects. The company's award-winning digital technology delivers numerous advances leading to improvements to HDMI digital cables and adapters. These advances and improvements overcome the limitations of passive, analog HDMI cables, enhancing transmission between the source and sink cable ends, lowering EMI radiation and interference with other wired and wireless connections, while delivering theater quality signals from the source to the display independent of cable length.
“The HDMI cables on the market today are typically either passive analog or pseudo-digital; both unable to adequately support today’s advanced video resolutions, particularly at longer cable lengths,” said Larry Woodson, President/CEO of VizionWare. “VizionWare’s Hi-Wirez technology delivers a clear path via reach-independent interconnects that are higher performance and easier to install than existing cabling solutions. They have been designed for the most demanding high definition video applications and have been developed with a lot of input and guidance from both custom residential and commercial installers.”
Image Enhancing Circuitry
Existing cables, lacking this circuitry, have attributes that lead to poor signal amplitude and phase dispersion throughout the cable. This causes signal loss in the cable limiting both reach as well as quality of the delivered image. VizionWare technology boosts the higher noise-susceptible frequencies. This minimizes signal loss in the cable, maintains the proper signaling levels, and allows for longer, lighter and more cost-effective cables, while delivering theater quality signals to the display.
Unlike other cable solutions, VizionWare cables utilize signal balancing circuit techniques to provide unsurpassed viewing clarity. This circuitry balances the spectral response of the cables which inherently have a non-linear response to different frequencies. This balancing of the non-linear response eliminates the “pixelization” effect and reach limitation inherent in existing cable technology.
DSP and Innovative Manufacturing Techniques
VizionWare's products make use of a digital signal processing technique that is added to the cable assembly through an innovative and uniquely developed manufacturing process. Through the use of this technology the detrimental impact of incoming signals and data on subsequent signals and data is reduced, providing for a richer viewing experience whether with short, intermediate or longer reach cables.
Enhanced Transmission Technology
Current passive, analog solutions create imaging problems between the Source and Sink cable ends. To overcome these problems, VizionWare's patented cabling technology minimizes signal coupling into shielded structures, as well as device impedance mismatches, both of which are common in existing passive cables. The signaling schemes presently used in existing HDMI / DVI cabling technology only sink current to one half of the true and complement differential pair at any one time, leading to common mode radiation and load differences in the cable assembly, which results in delivered images of poor fidelity. VizionWare's signaling technology corrects this mismatch between the source and sink currents, further reducing EMI within the assembly. VizionWare technology also minimizes package-based EMI and pad ring noise. The benefits of these improvements are higher quality images delivered over longer distances at resolutions up to and including 1080p.
Optimal Spectral Diffusion
VizionWare implements advanced coding techniques to reduce the considerable spectral energy induced by horizontal synchronizing ("HSYNC") and vertical synchronizing ("VSYNC") coding symbols. Through the use of Optimal Spectral Diffusion, VizionWare products achieve dramatic decreases in EMI and EMI emissions, without adding jitter to the signal. This reduces interference with other wireless and RF technologies, enhances EMC, and further enhances the delivered image versus alternative cabling. VizionWare technology allows for unprecedented bi-directional performance in an active cable assembly. The intended direction of the channel will be determined by the nature of the pixel clock itself and will allow the cable to determine the appropriate direction of the transmission. A fully bi-directional cable with active technology will be able to identify the source and display devices on either end of the cable with no input required from the user.
VizionWare’s first products are a family of active digital HDMI interconnects, dubbed Hi-Wirez. They will be available in 1 meter, 2 meter, 5 meter, 7 meter and 10 meter lengths, and will be introduced at the CEDIA EXPO being held in Denver, CO from September 14-17, 2006. A complete line of DVI interconnects as well as HDMI and DVI adapters will also be available by the end of the year.
Source: Press Release