US Patent No: 5,703,445
Number of patents in Portfolio can not be more than 2000
Sawtooth generator with disturbance signal rejection for a deflection apparatus
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Dec 30, 1997
Issued date -
Mar 29, 1996
filing date -
08/624,287
serial no -
In Force
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Abstract
In a vertical sawtooth generator, an end time of a retrace portion of a vertical sawtooth signal is controlled by an output signal of a comparator. The comparator has a first input terminal that is responsive to a reference voltage and a second input terminal that is responsive to the sawtooth signal. The reference voltage is coupled to an input terminal of an amplifier of an integrator that generates the sawtooth signal. Any disturbance signal component in the reference voltage is super-imposed on the sawtooth signal. Because the same disturbance signal component is developed simultaneously in both input terminals of the comparator, a high degree of common mode rejection is provided with respect to the disturbance signal component.
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First Claim
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International Classification(s)
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Cited Art
| Patent Info | (Count) | # Cites | Year |
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| 5,216,336 Generator for sawtooth signal with selectable retrace slope for a deflection apparatus | 6 | 1992 | |
| 5,264,762 Picture height adjustment arrangement for a video display | 3 | 1992 | |
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| 5,250,879 Deflection circuit having a controllable sawtooth generator | 8 | 1992 | |
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| 4,835,727 Field deflection circuit in a picture display device | 2 | 1987 | |
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| 4,945,292 Dynamic vertical height control circuit | 9 | 1988 | |