Information leakage prevention apparatus and method
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United States of America Patent
Stats
-
Apr 15, 2014
Issued Date -
N/A
app pub date -
Jul 16, 2010
filing date -
Sep 4, 2009
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
A spread spectrum modulation unit (12) performs spread spectrum clocking processing for a basic clock signal (BC) synchronized with the carrier frequency or its harmonic frequency of image information leaked from an unwanted electromagnetic wave. A modulation pattern generation unit (13) generates and outputs, as a modulation pattern signal (MP), a PN code having sign bit data synchronized with each pulse of the obtained spread spectrum clock signal SC. In addition, the modulation pattern generation unit (13) resets the repetition period of the PN code based on a horizontal sync signal (H). A modulated clock generation unit (14) modulates the spread spectrum clock signal (SC) in accordance with the modulation pattern signal (MP). The obtained modulated clock signal (MC) is amplified, generating a leakage prevention signal (JC). A leakage prevention signal containing a sideband component of a satisfactory level can be generated, obtaining a useful leakage prevention effect.
First Claim
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International Classification(s)
- 2010 Application Filing Year
- H04B Class
- 6625 Applications Filed
- 4708 Patents Issued To-Date
- 71.07 % Issued To-Date
Cited Art Landscape
Patent Citation Ranking
- 2 Citation Count
- H04B Class
- 4.15 % this patent is cited more than
- 11 Age
Maintenance Fees
| Fee | Large entity fee | small entity fee | micro entity fee | due date |
|---|---|---|---|---|
| 11.5 Year Payment | $7400.00 | $3700.00 | $1850.00 | Oct 15, 2025 |
