Sharp 32LF-94EC, Service Manual, Page: 46 / 82

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AK53 D.O.C. Service Manual 22/03/2004
• Blue Stretch
• Green Enhancement
• Black Stretch
• 32-bins histogram
• Electrical Local Doming Protection
Picture in Picture / Double window
• Requires external memory to be connected to SDRAM interface
• Second input through second color decoder. Can be selected to be either main or sub.
• YCrCb storage in 4:2:2 format. 8 bits per component. Dithering adopted to have 9 bits effectively.
• No joint line/crossover errors
• Supporting Double Window displaying both a PAL (50 Hz) and an NTSC (60 Hz) signal.
• Double window text. Displaying a TeleText page next to a TV broadcast. This feature is functional without
the external Memory in 50 Hz mode.
• For proper aspect ratio of Double Window display on 4/3 screen vertical scaling by deflection can be
adopted
Scan Rate Conversion
• This requires external memory connected to SDRAM interface
• Line flicker reduction
• Full interlaced performance (provided sufficient memory)
Video H/V Scaling
• Horizontal Panorama/customer defined Scaling in video path (not affecting graphics)
• Vertical Scaling by vertical deflection
Audio Base band Switching and Interfaces
• 5x Analogue outputs (Left, Right, Subwoofer, Centre and Surround speaker)
• 1x Left and Right Head Phones output
Sound Demodulator/Decoder
• Two FM/AM Demodulator channels with programmable mixer frequencies and four different filter
bandwidths:
– Multi-standard FM demodulation (B/G, D/K, I, M and N standard)
– Optional AM demodulation (L/L’ standard)
– FM pilot carrier present detector (for A2 sound systems)
• FM-A2 Decoder:
– Detection of ID signal for second carrier
– Decoding for three analog multi-channel systems (A2, A2+ and A2*) and satellite sound
– Identification A2 systems (B/G, D/K and M standard)
– Supporting Korean 2SC standard
• BTSC Stereo/SAP Decoder:
– M/BTSC and N standards supported
– Processing of MTS/MPX signal
– Detection of pilot carrier with pilot lock indicator
– AM demodulation of stereo sub-carrier
– Detection of SAP sub carrier
– SAP decoder
– FM demodulation of SAP carrier (without dbx®) simultaneously with stereo decoding, or mono plus
SAP with dbx®
– dbx® noise reduction on either (L-R) or SAP signal
• Japan MTS Decoder:
– Processing of MPX signal
– Detection of the Identification signal
– FM demodulation of sub-carrier for stereo or bilingual reproduction
• NICAM demodulator and decoder (B/G, I and L/L’ standard):
– DQPSK demodulation for different standards, simultaneously with 1-channel FM demodulation
– NICAM decoding
• Auto Standard Detection Mode (ASD)
• Demodulator Decoder Easy Programming (DDEP)
• FM-Radio decoder
• Identification circuit for all standards