Definition of a 1080p ccd

[Jan Crittenden livingston]

Michael,

A 1/3″ 1080 X1920 cip would have no low light capability and no dynamic range. In geneal it would be a bad idea at best. It is a progressive chip set, the DSP captures the signal as a 1080P/60 signal. Then based on how you have the camera set up to record, it wil down convert or cross convert to that format.

As I said before it is a progressive chip set.

Thanks,

Jan

Jan Crittenden Livingston
Product Manager, DVCPRO, DVCPRO50, AG-DVX100
Panasonic Broadcast & TV Systems

[Graeme Nattress]

That’s part of what this forum is about!

Graeme

– http://www.nattress.com – Film Effects and Standards Conversion for FCP

[Toke]

[Michael Brennan] “So it isn’t a 1920 x 1080 60p ccd?
Is it a 60i interlace chip?
Is use of the term “captured” in the above context have an engineering basis, I haven’t heard it used in this way before?”

“Captured” means here that the camera will produce 1920x1080p picture for further processing.
Single chips have lesser resolution, but they are aligned to each other by using spatial offset aka. pixel shift. We’ve been discussing about this with Jan (and thanks Jan for this incredible amount of attention we are getting) in another thread.

As for ccd’s being all progressive or some interlaced, I understand that usually when we talk about ccd’s we mean the whole camerahead consisting of the ccd’s and ad-converter and dsp after them.

I think that the ccd chip alone could be interlaced in a theory, because all ccd types (FF, FT & IT) have a serial register at the end where one horizontal line at a time is transferred. Ccd could be designed to tranfer only every other line to this register or the register could just disregard every other line. However, to my logics, it would be just simplier to build ccd to transfer the whole image to ad-converter and drop every other line in there or after that in dsp. Those things are easier to do in digital domain than in analog device like ccd.
Anyway all “broadcast quality” cameras, that have more horizontal lines in the ccd’s than cameras feed out, have to output all image data (progressive frame) to dsp, because there must be some scaling before interlacing. Even if ccd would give “readymade” interlaced picture out, it has to be low-pass filtered to avoid 30/25Hz flickering of the small details and to do this with high quality dsp has to compare both fields of the frame.

But I know this only in theory, so if there is somebody who is familiar with practical manufacturing of ccd’s, it would be nice to know more!

And, btw, does hvx have IT ccd’s?

[Michael Brennan]

[jiri vrozina] “o safe yourself some time copying and pasting,use keys Ctrl and Q.
regards-jiri vrozina
p.s. So Sony Cine Alta is taking advantage of only 1.1 milion pixels instead of 2.2?

“

Got it!

Cinealta camera head produces 1920×1080 10 bit 4:2:2 from HDSDI output on camera. However put a tape int he camera and 1440×1080 ixels are recorded.
Most HD camcorders do not record all the pixels the ccd has to offer.

Mike

[Michael Brennan]

[Jan Crittenden Livingston] “In geneal it would be a bad idea at best. It is a progressive chip set, the DSP captures the signal as a 1080P/60 signal. Then based on how you have the camera set up to record, it wil down convert or cross convert to that format.

As I said before it is a progressive chip set.”

Thanks Jan

Good luck with the launch

Mike Brennan

[Gerd Rein]

I just purchased a HVX200 camera and can not figure out what happens if I shoot in DVCpro and downsample the footage from a P2 card to DV tape in the camera. Do I get DVCpro quality or standard DV on the tape? If it is standard DV what is the difference if I shoot on tape directly? The manual does not give me a clue.
Also, in all the advertising there is talk about shooting 16:9 but the camera has only letterbox or aqueezed as alternative. Which one is real 16:9?
Hope someone has some advice on this.