News tagged with digital signals
3-D, after-the-fact focus image sensors invented
(PhysOrg.com) -- At the heart of digital photography is a chip called an image sensor that captures a map of the intensity of the light as it comes through the lens and converts it to an electronic signal.
Apr 03, 2012 |
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Fujitsu develops innovative anti-distortion technology to cut energy use by two-thirds
Fujitsu today announced the development of a digital signal processing algorithm to compensate for waveform distortion in long-haul transmission systems of over several hundreds of kilometers. This, in turn, ...
Mar 09, 2012 |
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Record-speed wireless data bridge demonstrated: Takes high-speed communications the 'last mile'
A team of researchers in Germany has created a new way to overcome many of the issues associated with bringing high-speed digital communications across challenging terrain and into remote areas, commonly referred to as the ...
Feb 27, 2012 |
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High-speed CMOS sensors provide better images
Conventional CMOS image sensors are not suitable for low-light applications such as fluorescence, since large pixels arranged in a matrix do not support high readout speeds. A new optoelectronic component ...
Jan 03, 2012 |
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TV channel squeeze proposed to pay for tax cuts
(AP) -- Call it the Great Channel Squeeze.
Dec 16, 2011 |
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Fujitsu develops high-performance distortion-compensation circuit
Fujitsu announced their development of a digital signal processing algorithm to compensate for waveform distortions in signals transmitted by fiber-optic cables in long-haul transmission systems of 100 km ...
Sep 29, 2011 |
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Japan goes digital after turning off analogue TV
Japan on Sunday shifted to digital terrestrial broadcasting, switching off its analogue television network in all areas except those worst hit by the March 11 earthquake and tsunami, the government said.
Jul 25, 2011 |
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Wireless 'breadcrumbs' that won’t become toast when baked... or soggy when hosed
When Hansel and Gretel ventured into the forest, they left a trail of breadcrumbs to find their way home. In today's world, cellular phones, Global Positioning System (GPS), WiFi, and Bluetooth are the digital ...
Jun 16, 2011 |
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Mobile digital TV poised for big moves in 2011
Rabbit ears on a mobile phone? Well, not exactly, but broadcasters and gadget manufacturers are working to beam live television to portable devices.
Dec 22, 2010 |
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Freescale introduces low-cost, full-featured evaluation board for StarCore-based SC3850 DSPs
Freescale Semiconductor has introduced a low-cost evaluation module for the MSC815x and MSC825x family of programmable digital signal processors (DSPs) intended for medical, aerospace, defense and test/measurement applications.
Oct 29, 2010 |
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FCC to open up vacant TV airwaves for broadband
(AP) -- A new flavor of Wi-Fi, with longer range and wall-piercing power, could show up in wireless gadgets a year from now if the Federal Communications Commission works out the last details of new spectrum ...
Sep 13, 2010 |
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Free local TV soon to be available on cell phones
(AP) -- The prospect of watching live, local TV shows on mobile phones and other portable devices is getting closer. Manufacturers this week are showing off gadgets can receive a new type of digital TV transmissions.
Jan 06, 2010 |
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Explained: The Discrete Fourier Transform
(PhysOrg.com) -- In 1811, Joseph Fourier, the 43-year-old prefect of the French district of Isčre, entered a competition in heat research sponsored by the French Academy of Sciences. The paper he submitted ...
Nov 25, 2009 |
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Don't change that channel: DTV woes still abound
(AP) -- Think the digital TV transition is over? Not quite. Many viewers have found that they can't pick up certain stations after the switch, even with the right TVs or converter boxes. The stations are still trying to ...
Sep 18, 2009 |
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European research's bit part in Ben Hur Live?
(PhysOrg.com) -- Technology developed by European researchers is helping the stage production of Ben Hur Live in London's O2 arena.
Sep 17, 2009 |
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Digital signal
The term digital signal is used to refer to more than one concept. It can refer to discrete-time signals that have a discrete number of levels, for example a sampled and quantified analog signal, or to the continuous-time waveform signals in a digital system, representing a bit-stream. In the first case, a signal that is generated by means of a digital modulation method is considered as converted to an analog signal, while it is considered as a digital signal in the second case.
For more information about Digital signal, read the full article at
Wikipedia.
This text uses material from Wikipedia and is available under the GNU Free Documentation License.
