Panasonic DX-2000 Service Manual page 312

10.7.4 File Format for Internet Fax
Sending Internet Fax devices must be able to write minimum set TIFF files, according to the rules for creating minimum set TIFF
files defined in TIFF for Facsimile (the S profile) [RFC2301], which is also compatible with the specification for the minimum subset
of TIFF-F in [RFC2306]. Receiving Internet Fax devices MUST be able to read minimum set TIFF files.
The Following tree diagram shows the relationship among profiles and between profiles and coding methods.
A profile is based on a collection of ITU-T facsimile coding methods.
Class Color
S B/W
F B/W
J B/W
C Color
L Color
M Color
10.7.5 Minimal Set
The minimum interchange set of TIFF fields that must be supported by all implementations in order to assure that some form of an
image, albeit black-and-white, can be interchanged. The table below summarizes the TIFF fields that comprise the minimal
interchange set for black-and-white facsimile. The Baseline and Extenuation fields and fields values must be supported by all
implementations.
Baseline Fields
Bits Per Sample
Compression
Fill Order
Image Width
Image Length
New Sub File Type
Page Number
Photometric Interpretation
Resolution Unit
Rows Per Strip
Samples Per Pixel
Strip Byte Counts
Strip Offsets
X Resolution
Y Resolution
Extensions Fields
T4 Options
B/W
J F
(JBIG) (MMR, MR)
Coding method
MH
MMR, MR
JBIG
JPEG
(lossy)
JPEG
(lossless, grayscale)
Mixed Raster Content Multiple coders and resolution within a page
1
3:1 dimension MH coding set T4 Options = 0 or 4
Least significant bit first
1728 (A-4)
N: total number of scan lines in image
2: Bit 1 identifies single page of a multi-page document
N,m: page number n followed by total page count m
0: pixel value 1 means black
2: inch
Number of scan lines per strip = Image length, with one strip
1
Number of byte in TIFF strip
Offsets from beginnings of file to single TIFF strip
204, 200 (pixels/inch)
98, 196, 100, 200 (pixels/inch)
0: MH coding, EOLs not byte aligned
4: MH coding, EOLs byte aligned
S (MH)
Color
C (JPEG)
L (JPEG)
MRC: Mixed Raster Content
Internet Fax minimal set
Internet Fax full mode
Internet Fax mixed mode
Color minimal set
One bit per color,palletized color image, continuos tone color and grayscale
images
339
M (MRC)
Remarks
Values