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Multiple watermarks in content 원문보기

IPC분류정보
국가/구분 United States(US) Patent 등록
국제특허분류(IPC7판)
  • G06K-009/00
  • H04N-001/40
  • G06K-009/36
출원번호 US-0420977 (2006-05-30)
등록번호 US-7266217 (2007-09-04)
발명자 / 주소
  • Rhoads,Geoffrey B.
  • Gustafson,Ammon E.
출원인 / 주소
  • Digimarc Corporation
인용정보 피인용 횟수 : 64  인용 특허 : 91

초록 ▼

Image, video, and/or audio data is encoded with at least first and second watermarks. In one implementation a method includes: receiving content; embedding a first watermark signal in the content; compressing the content; embedding a second watermark signal in the content. The first watermark signal

대표청구항 ▼

We claim: 1. A method comprising: receiving content comprising at least video and audio; analyzing the content to determine whether a first watermark signal and a second watermark signal are encoded in content; when the first watermark signal is present in the content, but not the second watermark

이 특허에 인용된 특허 (91)

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이 특허를 인용한 특허 (64)

  1. Geyzel, Zeev; Ratner, Daniel, Adding watermarks to video content.
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  2. Rhoads, Geoffrey B., Apparatus and methods to process video or audio.
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  3. Rhoads, Geoffrey B.; Gustafson, Ammon E., Apparatus to process images and video.
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  4. Stach, John, Arrangement of objects in images or graphics to convey a machine-readable signal.
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  5. Rhoads, Geoffrey B., Audio and video signal processing.
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  6. Rhoads, Geoffrey B., Audio encoding to convey auxiliary information, and decoding of same.
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  7. Rhoads, Geoffrey B., Audio encoding to convey auxiliary information, and media embodying same.
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  8. Alattar, Adnan M., Authentication of physical and electronic media objects using digital watermarks.
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  9. Rhoads, Geoffrey B., Authentication using a digital watermark.
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  10. Rodriguez, Tony F.; Reed, Alastair M.; Sharma, Ravi K.; Alattar, Osama M.; Hannigan, Brett T.; Levy, Kenneth L.; Brunk, Hugh L.; Rhoads, Geoffrey B.; Gustafson, Ammon E., Automated methods for distinguishing copies from original printed objects.
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  11. Brunk, Hugh L.; Bradley, Brett Alan; Hannigan, Brett T., Benchmarks for digital watermarking.
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  13. Rhoads, Geoffrey B.; Levy, Kenneth L., Content indexing and searching using content identifiers and associated metadata.
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  62. Levy, Kenneth L.; Perry, Burt W., Watermark and fingerprint systems for media.
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  63. Levy, Kenneth L., Watermark embedding functions adapted for transmission channels.
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  64. Levy, Kenneth L., Watermark payload encryption for media including multiple watermarks.
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