The CL680 VideoCD Decoder integrates audio features
to provide increased functionality and value to con-
sumers without increased system cost.
C-Cube's audio algorithms use advanced DSP tech-
niques to expand the perceived sound field with stan-
dard stereo sound tracks.
ERROR HANDLING TECHNOLOGY: Errors that the CD-DSP
can detected but not correct can be corrected by
ClearView. These errors include both header and pic-
ture (data) errors. ClearView identifies the error type,
classifies it, and uses the best possible strategy for
COMPATIBILITY: ClearView ensures complete compliance
with the entire MPEG-1 standard, so that the CL680
can flawlessly play back VideoCDs that have been
encoded in a variety of styles. ClearView plays back
most VideoCD formats, including VideoCD 1.1 and
2.0, KaraokeCD, OM-1 and CD-I.
Key control is a standard feature in most Karaoke
products. The CL680 changes the pitch of the mono or
stereo audio track n single quartertone increments,
eliminating the need for a separate DSP for Karaoke.
By comparing the left and right channels, the CL680
attenuates the vocal component of a stereo program.
This feature allows VideoCDs and standard CD-DA
recordings to be used for Karaoke and accommodates
non-standard video Karaoke titles.
In addition to its extensive audio processing capabili-
ties and features, the CL680 offers unique video fea-
tures that provide consumers added utility compared
to a standard VideoCD player.
The result of over 20 man-years of engineering effort,
ClearView sets the standard for reliable, clear video. C-
Cube’s ClearView technology, first introduced on the
CL484, has been further enhanced on the CL680.
These enhancements include:
This feature provides PlayBack Control (PBC) capabili-
ty with VideoCD 1.1 discs by displaying up to nine
images on the TV screen to form a video menu. The
CL680 can read images from each track on a single
disc or from multiple discs to provide a playback con-
trol menu, or images can be from a single track to pro-
vide chapter access menus.
The CL680's FlexView feature converts NTSC source
material to PAL format to provide full-screen, correctly
proportioned displayed video. FlexView uses C-Cube's
adaptive interpolation technology for smooth, raster-
It also converts coded frame rates of 24 (film), 25 (PAL)
or 30 (NTSC) Hz to NTSC or PAL display rates (60 or