STV2310D STMicroelectronics, STV2310D Datasheet - Page 26

• Manufacturer Part Number: STV2310D
• Description: Video ICs Digital Video Decodr
• Manufacturer: STMicroelectronics
• Type: High Quality front end videor

Specifications of STV2310D

• Maximum Operating Temperature: + 70 C
• Package / Case: TQFP-64
• Minimum Operating Temperature: 0 C
• Mounting Style: SMD/SMT
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

Functional Description
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4.9.1.2 Zoom-In Mode
4.9.1.3 Zoom-Out Mode
The output formatting can be performed with Normal or Square Pixel modes. For Square Pixel
mode, the number of required samples per line depends on the input standard.
In Zoom-In mode, a portion of the TV scan line is expanded to take all the available output samples
for that line.The zoom-in factor ranges from 1 (no zoom) to 4 (large zoom). The Zoom-In mode start
position is programmable.
In Zoom-Out mode, the entire input TV scan line is compressed to take only a part of the output line.
The active samples are positionned in the center of the output line and the rest of the line is blacked
out. The zoom-out factor ranges from 0.25 (large zoom) to 1 (no zoom).
Output Line
after zoom
Input Line
Output Line
after zoom
Input Line
625 Lines/50 Hz
525 Lines/60 Hz
Standard
Table 11: Required Samples per Line for Square Pixel Mode
Black Level
Programmable Offset
Figure 15: Zoom-Out Mode
768
640
Figure 14: Zoom-In Mode
720 Samples (Y Normal Pixel Mode)
720 Samples (Y Normal Pixel Mode)
Y SIgnal
2 Examples for Zoom In Action
Samples per Line
384
320
Cr Signal
Black Level
384
320
Cb Signal
STV2310