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_hm
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Fairchild CCD 143A
_hm   11/26/2013 6:51:11 PM
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I remember doing qualification and life test of Faichild CCD143A. It was wonderful to do it and get 20m resolutiion image from low earth orbit satellite.

Susequently it was more powerfull CCDs and now it is microwave remote sensing.

 

junko.yoshida
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imaging in space
junko.yoshida   11/27/2013 12:52:06 PM
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Thanks for this good article. I was reminded of something similar when I was covering a show in Yokohama, Japan last week.

I saw NEC's image compression algorithm, called StarPixel at the show. It was apparently adopted by the Japan Aerospace Exploration Agency (JAXA) for use in the Venus Climate Orbiter AKATSUKI a few years ago.

I was told that while it took 60 seconds for JPEG 2000 to do lossless compression on a very large image file, it took StarPixel one second. Various constraints working in the space certainly give opportunities for developments of new technologies.

junko.yoshida
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Re: imaging in space
junko.yoshida   11/27/2013 12:53:48 PM
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And here's the link to the show -- ET2013 -- I covered in which StarPixel is mentioned:

http://www.eetimes.com/document.asp?doc_id=1320193&cid=SM_ELE_EET_Edit

_hm
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CCD for physical research like spectrometer
_hm   11/28/2013 7:26:55 PM
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I am also interested in knowing current state of CCD imagers for physical research application like spectrmeters working at 20Kelvin.

 

Charles.Desassure
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CMOS...
Charles.Desassure   11/29/2013 2:54:20 PM
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Thanks for this artilce.  I agree with everything in this article except the year of 1969.  I believe that 1968 was the year that laid down the groundwork to ensure that we were successful in 1969.  The first was that re-application of hardware developed for Apollo. This was the approach proposed for the Apollo Applications Program (AAP), which had been endorsed by President Lyndon B. Johnson in 1964-1965. Once again, wonderful article.

AZskibum
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Re: CMOS...
AZskibum   11/30/2013 11:46:10 PM
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I don't think anyone misses those old image orthicon tubes. Thank goodness for both CCD and CMOS image sensors!

betajet
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Greetings over your Orthocon Tube
betajet   12/1/2013 2:22:54 PM
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I miss the quality of some of the programs that were shot using orthocon tubes.  I only occasionally watch 21st Century television, and it becomes clear within seconds that I'm "not the target demographic".

Much more amusing to see Ernie Kovacs as Percy Dovetonsils, poet laureate, saying "Greetings over your Orthocon Tiube" with that wonderfully silly voice and glasses.



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As data rates begin to move beyond 25 Gbps channels, new problems arise. Getting to 50 Gbps channels might not be possible with the traditional NRZ (2-level) signaling. PAM4 lets data rates double with only a small increase in channel bandwidth by sending two bits per symbol. But, it brings new measurement and analysis problems. Signal integrity sage Ransom Stephens will explain how PAM4 differs from NRZ and what to expect in design, measurement, and signal analysis.

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