Patent US6947571B1 successfully refreshed from Google Patents.
US6947571B1
Expired / Lapsed
US
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Cell phones with optical capabilities, and related applications
Assignee: Digimarc Corp
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Filing: 2000-05-15
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Granted: 2005-09-20
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Expires: 2020-05-15
Abstract
Abstract A cell phone is equipped with a 2D optical sensor, enabling a variety of applications. For example, such a phone may also be provided with a digital watermark decoder, permitting decoding of steganographic data on imaged objects. Movement of a phone may be inferred by sensing movement of an imaged pattern across the optical sensor's field of view, allowing use of the phone as a gestural input device through which a user can signal instructions to a computer-based process. A variety of other arrangements by which electronic devices can interact with the physical world are also detailed, e.g., involving sensing and responding to digital watermarks, bar codes, RFIDs, etc.
Inventors
- 👤 Geoffrey B. Rhoads
- 👤 Megan I. Livermore
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 12:20
CPC Classifications
H; H04; H04N; H04N1/00; H04N1/32; H04N1/32101; H04N1/32144; G; G06; G06Q; G06Q30/00; G06Q30/02; G06T; G06T1/00; G06T1/0021; G07; G07F; G07F17/00; G07F17/26; H04N1/00127; H04N1/00204; H04N1/00281; H04N1/00307
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
65 words
In a wireless telephony handset including a microphone, a modulator, and an RF amplifier, the handset serving to receive audio and transmit an RF signal conveying audio modulation, an improvement comprising a 2D optical sensor producing optical data, a lens for imaging an object onto the sensor, and a watermark decoder for decoding plural bit identifier data conveyed by a digital watermark on the object.
Claim 2
Dependent Claim
65 words
In a wireless telephony handset including a microphone, a modulator, and an RF amplifier, the handset serving to receive audio and transmit an RF signal conveying audio modulation, an improvement comprising a 2D optical sensor producing optical data, a lens for imaging an object onto the sensor, and a watermark decoder for decoding plural bit identifier data conveyed by a digital watermark on the object.
Claim 3
Independent Claim
77 words
A method of using a wireless telephone handset that includes a microphone, a 2D optical sensor, and a wireless interface, the wireless interface being capable of transmitting an RF signal conveying information corresponding to audio sensed by said microphone, the method comprising: presenting in a field of view of said 2D sensor a physical object bearing a digital watermark pattern, the pattern representing a plural-bit watermark payload; and decoding from the physical object said plural-bit watermark payload.
Claim 4
Independent Claim
77 words
A method of using a wireless telephone handset that includes a microphone, a 2D optical sensor, and a wireless interface, the wireless interface being capable of transmitting an RF signal conveying information corresponding to audio sensed by said microphone, the method comprising: presenting in a field of view of said 2D sensor a physical object bearing a digital watermark pattern, the pattern representing a plural-bit watermark payload; and decoding from the physical object said plural-bit watermark payload.
Claim 5
Dependent Claim
12 words
The method of claim 2 wherein the physical object is a card.
Claim 6
Dependent Claim
12 words
The method of claim 2 wherein the card is a playing card.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 2008-09-19 | 2009-03-21 | 2009-09-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2012-09-19 | 2013-03-21 | 2013-09-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2016-09-19 | 2017-03-21 | 2017-09-20 | $7700.00 | Window Closed / Lapsed |