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Section 4
Block Diagram
2. DECODER/SCREEN-SYNTHESIZER Block
This block consists of the followings:
4-1. Circuit DescriptionPLD2 DECGLUE (IC101)
MPU2 DEC (IC501)
The ENC-65 board consists of the following circuit blocks:HL_DEC (IC301)
1. ENCODER/9P-REMOTE BlockSDRAM for HL_DEC (IC401-403)
2. DECODER/SCREEN-SYNTHESIZER BlockSDRAM (IC201-204)
3. AUDIO Block
4. TIMECODE BlockThe bit stream signal that is supplied from the ENCODER/9P-REMOTE block is sent to the HL_DEC
5. IN/OUT Block(IC301) via PLD2 DECGLUE (IC101) and is decoded to the video signal by the decoder, and is returned
6. PCI BRIDGE Blockto PLD2 DECGLUE (IC101).
PLD2 DECGLUE (IC101) contains SCREEN-SYNTHESIZER using SDRAM (IC201-204).
1. ENCODER/9P-REMOTE BlockThe decoded video signal and the video signal that is supplied from the ENCODER/9P-REMOTE block
This block consists of the followings:are synthesized by the synthesizer.
PLD1 ENCGLUE (IC1105)Either one of the three signals of the output signal of this synthesizer, the decoded signal and the supplied
MPU1 ENC (IC1901)signal, is selected and the selector output is sent to the IN/OUT block as the output video signal.
ENC1/3 (IC1607, IC1601)MPU2 DEC (IC501) controls HL_DEC (IC301) frame by the frame to enable the special playback such
EDORAM for ENC1 (IC1801-1804)as variable speed playback, reverse playback, etc.
SDRAM for ENC3 (IC1701-1704)
PRE-FILTER (IC1301)3. AUDIO Block
SDRAM (IC1201)This block consists of the followings:
PLD1 ENCGLUE (IC1105)
PLD1 ENCGLUE (IC1105) is connected to ENC1/3 (IC1607, IC1601), PRE-FILTER (IC1301) andMPU1 ENC (IC1901)
SDRAM (IC1201), and performs the data transaction by controlling the flow of the video signal that isSDRAM (IC1201)
supplied from the IN/OUT block.(The circuit blocks that are used in the ENCODER/9P-REMOTE block, are shared by this block.)
SDRAM (IC1201) is the memory for the frame synchronizer contained in the PLD1 ENCGLUE
(IC1105), and removes jitter from the input video signal.The AUDIO block relays the audio signal between the IN/OUT block and the PCI BRIDGE block. This
This video signal is not only used as the input signal of the ENCODER/9P-REMOTE block but also sentblock can also give delay using SDRAM (IC1201).
to the DECODER/SCREEN-SYNTHESIZER block.The MPU1 ENC (IC1901) receives the timecode data that is output from the timecode block and controls
Filtering of the video signal is performed in the PRE-FILTER (IC1301). The filter coefficient is set from(starts/stops) the flow of the audio signal.
MPU1 ENC (IC1901) via PLD1 ENCGLUE (IC1105) for every frame.
The video signal is encoded to the MPEG2 bit stream signal by ENC1/3 (IC1607, IC1601), and is then4. TIMECODE Block
sent to the PCI BRIDGE block and DECODER/SCREEN-SYNTHESIZER block. The encode parameterThis block consists of the following:
is set from MPU1 ENC (IC1901) via PLD1 ENCGLUE (IC1105) for every frame.TIMECODE (IC701)
PLD1 ENCGLUE (IC1105) has the selector switch for the bit stream output to the DECODER/SCREEN-
SYNTHESIZER block. The selector switch selects either the bit stream signal generated by ENC1/3The TIMECODE (IC701) is used as the LTC reader and is controlled by MPU1 ENC (IC1901) via PLD1
(IC1607, IC1601) or the bit stream signal supplied from the PCI BRIDGE block.ENCGLUE (IC1105) and PLD0 AVIOGLUE (IC1012).
The MPU1 ENC (IC1901) receives the timecode data that is output from the TIMECODE block, and
controls all of PRE-FILTER (IC1301), ENC1/3 (IC1607, IC1601) and 9P-REMOTE.
DVA-700BSC4-1 (E)4-1 (E)
DVA-V700 |
ACEC
SONY
