Pioneer DVR-7000 Service Manual page 25

Fig. 7 Slalom
3.2.3.7 LPCM Audio Recording
The DDCE (Dolby Digital Consumer Encoder) has been
conventionally employed for audio encoding, and now LPCM
(Linear PCM) audio recording has been created as an algorithm for
AV encoding, enabling audio recording more faithful to the original
sound.
Fig. 8 MAIN Assy
MAIN Assy
IC3003 PE5219A
3.2.4 System Control Structure
Fig. 9 shows a system block diagram of the DVR-7000. The system
is roughly divided into two blocks: the writer block (which writes in
and reads out data to and from a disc), and the recorder block (which
encodes/decodes video and audio signals and generally controls the
whole system, including UI).
3.2.4.1 Structure of the Control System
Although the DVR-2000 contained 6 CPUs, including the one
controlling DV, the DVR-7000 contains the following 3 CPUs (see
Fig. 10):
(1) Recorder Main CPU
For control of the whole system, such as recording and playback
operations, including control of each CPU, and user interface
(2) Read/Write Control CPU
For control of read out/write in from/to a disc.
(3) Tuner/FL Control CPU
For control of the tuner, FL, 3-D Y/C, and keys of the main
unit, and for management of time and timer setting
DVR-7000
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