Appeal No. 2004-2147
Application No. 10/241,556
We agree with appellant that the “zooming” of an image that is on a computer
display does not necessarily require a change in pixel density (or pixel size). The pixel
density (or pixel size) of the display may be the same before and after the “zooming,”
with, for example, one pixel in the former image being transformed to several pixels in
the latter image. The transformation thus may be with respect to pixel number, rather
than pixel size.
However, we agree with the examiner that the pixel density (or pixel size) of the
computer display in Sayed is different from the pixel density (or pixel size) of the CCD
sensor chip. What a reference teaches is a question of fact. In re Baird, 16 F.3d 380,
382, 29 USPQ2d 1550, 1552 (Fed. Cir. 1994); In re Beattie, 974 F.2d 1309, 1311, 24
USPQ2d 1040, 1041 (Fed. Cir. 1992). Sayed provides support for the examiner’s
finding.
The CCD sensor chip 18a provides a 4k X 4k array of 15x15 micron pixels, which
can be combined on chip through pixel binning operations to provide lesser resolutions,
such as an effective 2k X 2k array of 30x30 micron pixels or an effective 1k X 1k array of
60x60 micron pixels. Col. 5, ll. 9-15. The CCD pixel image data is read out and
provided to workstation 56, which includes a high resolution display 58 (Fig. 4). The
workstation includes a frame grabber capable of capturing and storing images, and
software for displaying the CCD-generated image. Col. 6, l. 59 - col. 7, l. 9.
We acknowledge the possibility that workstation 56 might automatically adjust the
resolution (i.e., pixel size) of display 58 to match the pixel size of the input signal.
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