Samsung DVD-R155 Service Manual page 109

´ Features of SAA7138 A/V Decoder ´
1) Analog video interface
- Twelve analog inputs, which allow many combinations of CVBS signals S-video signals
- RGB signals or Y-PB-PR signals (progressive or interlaced)
- Fast switch and AV-select for SCART applications
- Four high-quality 10-bit CMOS Analog-to-Digital Converters (ADC), up to
- oversampling
- Two buffered analog outputs, which can provide CVBS signals or s-video signals from corresponding analog
inputs.
2) Video decoder
- Superior video quality by adaptive 2-dimensional combfilter for Y/C separation (4 lines)
- Luminance signal and chrominance signal processing for
- PAL BGDHIN
- PAL M
- Combination PAL N
- NTSC M
- NTSC Japan
- NTSC 4.43
- SECAM
- Automatic detection of any supported color standard
- Comprehensive detection of copy protected input signals according to Macrovision standard
- Synchronization and clock generation for all standard and non-standard video sources, like consumer grade
Video Cassette Recorders (VCR)
- Automatic detection of signals from consumer grade VCRs
- Discrimination between CVBS signals and Y/C signals
- Root Mean Square (RMS) noise level estimation
- Status register and configurable status-change output (interrupt) to minimize software overhead.
3) Analog sound interface
- Second Sound Intermediate Frequency (SSIF) from a tuner
- Four base-band stereo inputs
- One 16bit stereo ADC
- Two 16bit stereo Digital-to-Analog Converters (DAC)
- Two stereo base-band outputs, which can connect directly to the analog inputs (loop-through).
4) TV sound decoder and processor
- Analog TV sound decoder for
- NICAM
- BTSC together with SAP; improved channel separation by Philips Noise Reduction (PNR) or optionally
by dbx
- A2 (stereo and dual-language)
Samsung Electronics
Circuit Operating Descriptions
13-9