Talk:PXL2000

message: The text says: "The PXL scanned its 120 by 90 CCD fifteen times a second, meaning that it processed 162000 pixels per second ignoring recovery time; the CCD clocks actually ran at approximately 180kHz. It ran its tape approximately nine times faster than an audio cassette, giving approximately 160kHz of useful bandwidth. This meant that, assuming the tape behaved at specification, it would record only half of the information scanned out of the CCD."
I am not aware of the special properties of this format. However, as an audio and video signal processing professional I see the following problems with this text:
If you are running data at a clock of 180 kHz, you actually need (slightly over) half the bandwidth to store that information, i.e. 90 kHz. However, if an FM signal is to be stored to the tape, it would be very interesting to know both the center frequency, bandwidth and standard deviation of that signal, as they all effect the required medium bandwidth (e.g. FM radio has an audio bandwidth of 15 kHz, but it still requires 200 kHz RF bandwidth). Without that information, we really cannot tell much about the relationship between available bandwidth and how well we can store the CCD signal.
As I don't have the answers (only impertinent questions), I will not change the main page. However, I would like to see the last quoted sentence removed, because bandwidth and "pixel" rate do _not_ have such cause and effect as explained in the article. For the same reason the conclusions drawn in the following sentence don't make much sense to me: "With this in mind, the PXL ASIC applied fairly heavy analogue filtering to the video signal to smooth it on exit from the CCD, then pre-emphasize it, offsetting the disproportionate loss of higher frequencies." While I certainly do believe that lots of filtering is needed between the CCD and tape, and while tape bandwidth is certainly a key reason for filtering, there isn't necessarily a "disproportionate loss of higher frequencies". 120 pixels just isn't very much to begin with and signal processing principles dictate that you have to filter it heavily if you don't want to end up with a pixellated image.
Kind regards, RealLeo 11:09, 3 December 2007 (UTC)
thread_title:  Possible problems with frequency calculations 

message: I noticed that this article, albeit being titled PXL-2000, has been revised by someone here on Wikipedia to refer to the camera throughout the article as a "KiddieCorder".  To the best of my knowledge, the term "KiddieCorder" was never an official name for the camera (only a colloquial "nickname" for it), and it was never referred to as such by Fisher-Price, in their advertising or elsewhere.
So, I've changed the article back to its earlier state to refer it back to its proper name of PXL-2000...
misternuvistor (talk) 19:49, 14 November 2009 (UTC)
thread_title:  KiddieCorder????? 

message: --  Despayre  tête-à-tête 08:15, 1 May 2012 (UTC)
thread_title:  Copyedit done 

message: I know these cameras were sold in the UK, because I remember them being advertised on TV at the time - but the article talks a lot about technical details which would presumably only apply to America. Does anyone know anything about the UK version of the PXL2000? The RF modulator would need to be different for a start, and presumably the frame rate and resolution would have been different to better match UK standards? 86.178.172.67 (talk) 14:25, 20 June 2015 (UTC)
thread_title:  UK version? 

message: "PXL2000" is a redirect to "PXL-2000"; "PXL-2000" is the article, and it begins with the words "The PXL-2000":  this is the opposite of how it should be.  The article should be at "PXL2000", "PXL-2000" should be a redirect, and the first words should be "The PXL2000".  The hyphenated spelling is an error:  just look at the photo of the camera, which has no hyphen in its logo; the instruction manual confirms this, spelling it "PXL2000" not only in the logo, but also in the body text (e.g., "Your PXL2000 is the latest in lightweight, portable video technology", on page 3, where the same, non-hyphenated spelling also occurs six other times).
I'm requesting a move through Wikipedia:Requested moves
— President Lethe (talk) 00:59, 16 March 2021 (UTC)
thread_title:  Erroneous redirect