MN6761 PANASONIC [Panasonic Semiconductor], MN6761 Datasheet - Page 5

• Manufacturer Part Number: MN6761
• Description: External Synchronization Control LSI for Color Video Cameras
• Manufacturer: PANASONIC [Panasonic Semiconductor]

For Video Equipment
1. Horizontal synchronization block
2. Vertical synchronization block
Timing Chart
This block compares the phases of the HSYNC signal derived by separating off the horizontal component of
the GLSYNC input and the WHD signal from the synchronizing signal generator after it has passed through
the monostable multivibrator. It is thus possible to adjust the horizontal phase by adjusting the CR integral
circuit's time constant.
This block detects the V-SERATION interval in the GLSYNC input and generates a vertical reset (VR) pulse
with 0.5 H of the start of that interval. It then issues no pulses for 256 H (NTSC) or 304 H (PAL) after this
VR pulse.
GLSYNC
VR
GLSYNC
HSYNC
WHD
DELAY
WHD
Timing chart for horizontal pulse phase comparison
Vertical reset pulse timing chart
14.0µs ( NTSC )
11.2µs ( PAL )
2.2µs ( NTSC )
1.8µs ( PAL )
MN6761S