NOTE:
When Field 1 of a Frame has been stored in one of the Banks for output as a
still image, Field 1 from another frame can be stored on the other Bank or the
second Bank can remain “Enabled” and full motion video can be passed through.
Use the 0VM and 1VM command to toggle between the two banks.
42)
ENABLE VIDEO MEMORY
Function:
Enables video to again pass through the Memory Bank selected.
Format:
Memory Bank Number E M
Explanation:
This command “releases” the image that was grabbed and stored
with the DM command and permits continuous video to again
pass through the buffer for output to the monitor at normal
playback speed. Its arguments are the same as those used with
the Disable Video Memory command, either 0 or 1.
Power-on default setting is Enable Video Memory, 0EM. The
completion status is returned immediately.
Execution:
* Field Mode=17RG, Bank 0 Disabled =0DM,
Bank 0 activated for video output=0VM
0 E M <C/R>
R <C/R>
* Bank 0 Enabled, allowing video to again pass through the
memory buffer at normal playback speed.
Note:
To store two fields of one Frame, set
Video Memory Mode, Frame Mode
,
1RG
,
then grab and store the Frame,
0DM
. To then access both Field 1 and Field 2 of that
specific frame, Set
Video Memory Mode, Field Mode
, and send
0VM
or
1VM
to access
either Bank 0 or Bank 1.
Overview Interleaved Video Playback Mode
The LD-V8000’s video memory buffer also makes possible
Interleaved Video
Playback
when used with a series of three commands: the
RG
command to select
Interleaved Video Playback Mode
/
Frame or Field
, the
RM
command,
Select Frame
Interval
, and
IM
command,
Select Playback Field
.
Interleaved Playback Mode
of the
LD-V8000 allows playback of materials that have been recorded onto video tape in
interleaved fashion and then pressed to disc. By placing the video material on the
disc in an interleaved fashion, skipping one, two or three frames, the user can
effectively double, triple or quadruple the amount of video material on the disc. e.g.
Program 1 is placed on every even frame number of the disc, and Program 2 is
placed on the odd frame numbers. Play back of Program 1 is achieved by playing the
even numbered Frames and displaying each one from memory one Frame count.
The player effectively outputs the image two “frame counts”, while it skips the odd
numbered frame. Audio, however, is output continually.
Chapter Four • LD-V8000 Level I & III
4-44
TP 113 v. 2.1 • 2/93
LD-V8000 Level I & III User’s Manual
ENABLE VIDEO MEMORY; Interleaved Video Playback Mode