Video

DVD Technical Notes

border as the Vertical Correlation

Coefficient Area. A larger area,

extending five pixels to the left and

right of the border is the Activity

Calculation Area.

Small, random-seeming changes at the border are determined to be legitimate variations in the signal. These are not changed. Moderate changes arranged in a line along block borders are deter- mined to be block noise and are corrected. However, when the image hardly changes within five pixels of the border and undergoes a big change right at the border, this is considered to be a legitimate edge in the picture, and it passes uncorrected.

Fig. 8: Detection and correction of block noise. On the left is the DVD block structure. In the center, a pair of blocks, showing the Activity Calculation Area. Across the bottom are sample readings. The first is a step characteristic of block noise, which gets corrected to a gradual slope. In the center are random variations, which are passed uncorrected. On the right is a large step characteristic of a legitimate picture edge. This also passes uncorrected.

After detecting block noise, Sony’s MPEG Image Processor must determine the appropriate corrective action. The correction area extends four pixels on either side of the border. Correction consists of smoothing the step of block noise into a more natural, gradual slope.

Noise Reduction system already knows that it’s a legitimate picture edge and will pass it through without correction.

While we have described Block Noise Reduction for the vertical block edges, the system works equally well for horizontal block edges. The result is a comprehensive solution to even subtle picture errors caused by block noise. Images are clearer and more natural. The subtle gradations captured by today’s best cinematographers are rendered with a greater precision and care. The soft shadows that define a cheekbone, a fold of cloth or a footprint in the sand come through with effortless clarity.

You can match the operation of Block Noise Reduction to the condition of each DVD. An on-screen menu offers eight settings, ranging from 0 (off) to 7 (maximum).

Clear Frame Still Image Performance

Fig. 9: Thanks to motion detection, the Block Noise Reduction circuit “knows” when a car is approaching the edge of a block and does not try to correct the picture edge.

For even greater sophistication, the Block Noise Reduction system takes advantage of the same motion detection engine as described above for Field Noise Reduction. In essence, the motion detector tells the Block Noise Reduction circuit, “a car is approaching the block edge.” When the car arrives, the Block

The third and final function of Sony’s MPEG Image Processor is Clear Frame. As many disappointed VHS users already know, when you hit the Pause button on a VCR, you see only the information for a single field. Much of the vertical resolution is lost. DVD players can perform far better in still mode, because DVD can present both fields together to represent the entire video frame.

However, as we discovered in the discussion of 525P outputs, the parameters of film-originated DVDs are quite different from those of video-originated DVDs.

•Film-originated DVDs do best with frame pause, because both video fields represent the same slice of time. The two fields blend together perfectly for a full-resolution still image.

•Video-originated DVDs capture two fields that represent different slices of time, 1/60 second apart. To accommodate

9

Page 8 Page 10
Page 9
Image 9
Sony S9000ES manual Clear Frame Still Image Performance, Calculation Area
Page 8 Page 10

S9000ES specifications

The Sony S9000ES is a cutting-edge addition to Sony's line of high-performance home audio solutions, designed to deliver an unparalleled listening experience for audiophiles and casual listeners alike. This model stands out for its exceptional build quality, advanced technologies, and versatile connectivity options, making it a noteworthy choice for both music enthusiasts and home theater setups.

One of the key features of the S9000ES is its support for a wide range of audio formats, including high-resolution audio formats like DSD, FLAC, and WAV, making it a go-to option for those who value fidelity in their music. With built-in support for streaming services like Tidal, Qobuz, and others, users can easily access their favorite songs in high quality.

The S9000ES is equipped with Sony's advanced Digital Signal Processing technology, which enhances audio performance by ensuring minimal distortion and maximum clarity. The device employs a sophisticated DAC (Digital-to-Analog Converter) that accurately processes audio signals, resulting in rich, immersive sound.

Another notable characteristic of the S9000ES is its robust construction. The unit features a solid chassis designed to minimize vibrations, ensuring a cleaner and more accurate sound reproduction. The use of premium components further enhances the overall performance, making this model a reliable choice for long-term use.

The S9000ES also incorporates Sony's exclusive DSEE HX technology, which upscales compressed audio files, restoring high-frequency sounds lost in compression. This technology ensures that even lower-quality tracks can be enjoyed with enhanced detail and depth.

Connectivity options on the S9000ES include HDMI, USB, and both optical and coaxial inputs, allowing users to connect a wide range of devices. Wireless connectivity through Bluetooth and Wi-Fi enables seamless streaming from smartphones, tablets, and computers.

Finally, the S9000ES is designed with user-friendliness in mind, offering an intuitive interface and remote control for seamless operation. Whether building a home theater setup or enhancing a music listening space, the Sony S9000ES promises to deliver unmatched performance and versatility, truly embodying Sony’s commitment to audio excellence.
Top Page Image Contents