Image Processing Reference
One of the most popular formats for compressing video for use on handheld devices is the
Cinepak mobile video produced by the Kinoma codec. This has become widely available and
is now being shipped within other compression systems. Later on when we start to exper-
iment with compression systems, we can try out our test footage with the Kinoma Cinepak
CLIÉ Video Recorder
Sony has introduced the VR100K video recorder that records television and video onto a
memory stick in a format that is compatible with CLIÉ handhelds. The device also contains
a TV tuner and supports a variety of input formats including the auxiliary outputs from
other home video devices. It is very small and compact, roughly as big as a VHS tape box.
Computer systems with a video input jack will also be able to receive cable and TV
signals through the TV tuner built into the VR100K. Viewing of recorded videos requires
Apple QuickTime 6.
The CLIÉ VR100K recorder compresses video and stores it directly onto a memory
stick. The utility software provided with it allows scheduled recordings to take place.
The video compression used in this device records nearly 17 hours on a 1 GB Memory
Stick PRO in LP1/LP2 mode, or 4 hours in top quality. A 128 MB memory stick stores
approximately 130 minutes in LP mode. This is just about enough for any major movie you
are likely to want to record or possibly two episodes of an hour-long program.
The video is compatible with all of the Palm OS 5 Sony CLIÉ models, including the
NX series, the TG50, NZ90, and the UX series. It uses the MPEG-4 Simple Profile video
codec. This suggests that further compression efficiency is possible if the H.264 codec is
deployed in the future.
This is a superb example of the kind of products that simply would not exist with-
out video compression.
Sony has withdrawn from the PDA marketplace as of summer 2004, but the tech-
nologies they have developed will still be relevant to other similar devices.
Remote Video Monitoring
Aside from being able to play movies while on the move, other potential applications are
being developed using video compression, handheld PDA devices, and the WiFi capabil-
ities being built into these products.
The Firepad company is developing handheld video baby monitors that let you
monitor your child from another part of the house.
Remote monitoring could use a mobile-phone service to deliver a video stream.
Browsing via the Internet though an IP connection is another alternative. There are many
possibilities for video conferencing and surveillance with these devices.
Kinoma codec: http://www.kinoma.com/products.html