■Thorough Vibration-resistant Designs
Since the high-density data recorded on DVD must be read with absolute accuracy, vibrations from outside or from internal sources such as the power unit will adversely affect sound and picture quality. A variety of designs have been incorporated in the DVD-9000 to suppress these unwanted vibrations. The bottom plate forming the foundation of the chassis is a 6-mm thick, 4-layer hybrid construction made up of a 1.2-
mmthick copper-plated metal sheet and three layers of 1.6-mm metal sheets. Large insulators of sintered alloy (the same type used in Denon's high-end S1 series) have been used for the DVD-9000's feet to absorb external vibrations. Reinforcing plates for the base, front, and rear and four 1.2-mm thick copper-plated sheets have been used in a 3-box construction to strengthen the chassis. The chassis also uses copper plating to bring the ground electric potential of the overall chassis close to equipotential in order to suppress electrical noise. The top cover uses three types of 1.2-mm thick metal sheets in different shapes, while 2.5- mm thick aluminum panels have been used for the sides, giving rigidity to the entire chassis. The DVD mechanism is mounted on a cast-aluminum base between the mechanism and the chassis. Parts made of different materials effectively absorb vibrations caused by the unit itself as well as from outside to ensure stable operation.
■THX Ultra Certified
The THX Ultra standards comprise three basic categories of tests; Audio Quality, Video Quality and User Interface. These tests ensure that the DVD Player is fully capable of bring out the best visual and sonic quality of your favorite DVD programs.
The DVD-9000 has passed those stringent standards.
■Newly-Developed Loading Mechanism for Suppression of Vibrations
The newly-developed mechanism unit uses a guide and tray painted with protein material that is highly resistant to vibrations in order to prevent unwanted vibrations to the tray.
■New PureProgressive Circuit
The DVD-9000's interlace/progressive converter is the new Progressive Converter with PureProgressive circuitry from Silicon Image. The Progressive Converter features faster moving picture detection and improved mode recognition capability.
High-speed processing: This Progressive Converter is capable of processing 6 billion operations per second, giving reality to the following high performance.
Moving picture detection: Since PureProgressive is also adept at 2:3 pulldown detection, which converts Film recording mode to TV/Video playback mode, and detecting Video mode signals of DVD-Video and other moving picture formats, PureProgressive is capable of reproducing DVD-Video discs containing both Film mode and Video mode signals, as well as high picture quality Progressive video sources, while avoiding the flickering caused by detection delays. In detecting moving video signals, the conventional Progressive method performs detection in single frame units, while PureProgressive stores 4 fields of video signals in a 64-Mbit SDRAM buffer, enabling the detection of single-pixel units to achieve greater precision in discriminating between moving and still pictures.
2:3 pulldown detection: In 2:3 pulldown processing which converts 24-fps Film mode into 60-fps TV/Video mode, there are cases in which 2:3 pulldown sync signals are not in sync. The PureProgressive converter thus quickly detects the non-sequential points and performs appropriate corrective measures at high speed to minimize picture flickering.
■14-bit, 108-MHz Video D/A Converter
The DVD-9000 uses a 14-bit, 108-MHz video D/A converter to tap the maximum potential of the new PureProgressive circuit's performance. The DVD-9000 also uses two independent D/A converters for Progressive and Interlaced picture reproduction.
