US Patent No: 8,174,368
Number of patents in Portfolio can not be more than 2000
Reading method, responder, and interrogator
Stats
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May 8, 2012
Issued date -
Feb 12, 2009
filing date -
12/370,263
serial no -
In Force
status
Importance
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Abstract
Transmission and reception of the identification number to/from an interrogator includes an interrogator that reads a recognition number from a responder by radio. When a clock pulse is modulated on a high-frequency carrier and transmitted to the responder from the antenna of the interrogator, there are a first case when the clock pulse interval is short and a second case when the clock pulse interval is long. By combining the clock pulse of the first case and the clock pulse of the second case so as to control the read of the recognition number from the interrogator, it is possible to realize reduction of the semiconductor chip size of the responder and suppress the cost of the semiconductor chip.
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First Claim
Related Publications
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International Classification(s)
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Cited Art
| Patent Info | (Count) | # Cites | Year |
|---|---|---|---|
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| 5,673,018 Transponder system for reporting the distance traveled by a wheeled vehicle | 30 | 1995 | |
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| 6,154,715 Integrated circuit tester with real time branching | 32 | 1999 | |
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| 5,890,105 Low bit rate coding system for high speed compression of speech data | 9 | 1995 | |
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| 6,010,075 Moving object identification method and apparatus | 11 | 1998 | |
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| 5,410,263 Delay line loop for on-chip clock synthesis with zero skew and 50% duty cycle | 98 | 1993 | |
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| 6,593,845 Active RF tag with wake-up circuit to prolong battery life | 99 | 1999 | |
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| 2002/0131,402 Registering an IP phone with an IP phone switch | 2001 | ||
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| 5,247,305 Responder in movable-object identification system | 10 | 1992 | |
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| 5,959,568 Measuring distance | 271 | 1996 | |
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| 2005/0114,560 Tightly coupled and scalable memory and execution unit architecture | 5 | 2004 | |
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| 5,469,152 Remote control device that transmits signals indicating termination of key pressing operations | 13 | 1994 | |
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| 7,408,456 Wireless communication system | 4 | 2002 | |
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| 6,674,359 Method of identifying several transponders | 5 | 2000 | |
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| 2004/0212,478 Remote control activator with voice data memory and associated method | 2 | 2003 | |
Patent Citation Ranking
Maintenance Fees
| Fee | Large entity fee | small entity fee | micro entity fee | due date |
|---|---|---|---|---|
| 3.5 Year Payment | $1600.00 | $800.00 | $400.00 | Nov 8, 2015 |
| 7.5 Year Payment | $3600.00 | $1800.00 | $900.00 | Nov 8, 2019 |
| 11.5 Year Payment | $7400.00 | $3700.00 | $1850.00 | Nov 8, 2023 |
| Fee | Large entity fee | small entity fee | micro entity fee |
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