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TrueDoc PFR Specification
The PFR specification defines the Bitstream portable font
resource (PFR), which is a compact, platform-independent format
for representing high-quality, scalable outline fonts. Many
independent organizations responsible for setting digital
TV standards have adopted the PFR font format as their standard
font format, including:
- ATSC
(Advanced Television Systems Committee), which approved
the DTV Application Software Environment, or DASE, standard.
The DASE standard calls out the ISO standard for fonts
- DAVIC
(Digital Audio Visual Council) sets multimedia standards
for international broadcasting
- DVB
( Digital Video Broadcasting), a Swiss-based industry organization
representing one standard for digital TV, which has been
adopted extensively in Europe
- DTG
(Digital TV Group) coordinates standards for Digital TV
broadcasting in the United Kingdom
- MHP
(Multimedia Home Platform), which many European set-top
box and digital TV manufacturers are using as their standard
development platform
- ISO/IEC
16500-6:1999 International Organization for Standardization
/ International Electrotechnical Commission), which together
form the specialized system for worldwide standardization.
After DAVIC completed their work, they were disbanded. The
DAVIC specification was then adopted as a standard by ISO.
The ISO document includes an appendix on coding of outline
fonts in PFR format for digital audio-visual systems
- OCAP
(OpenCable Application Platform), which supports the DVB-MHP
standard, including support for PFRs. The OpenCable initiative
is managed by the Advanced Platforms and Services group
at CableLabs
Bitstream is making the PFR font format public to help anyone
who wants to adopt these digital TV standards. Bitstream allows
unrestricted use of the information in the PFR specification
to make and use software that renders images from outlines
coded in the PFR format, provided such rendering is used with
one or more of these digital TV standards.
Click the link below to download a PDF document that describes
the PFR specification.
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