METHOD OF AND APPARATUS FOR HIGH-BANDWIDTH STEGANOGRAPHIC EMBEDDING OF DATA IN A SERIES OF DIGITAL SIGNALS OR MEASUREMENTS SUCH AS TAKEN FROM ANALOG DATA STREAMS OR SUBSAMPLED AND/OR TRANSFORMED DIGITAL DATA
First Claim
1. The method of steganographically embedding substantial supplemental digital data in a series of digital measurements derived from one of an analog data stream and subsampled and/or transformed digital data, that comprises, deriving such series of digital measurements through functional transformation from a set of input data converted into a set of output data of successive quantized and/or aliased components;
- transforming the substantial supplemental digital data into a series of successive bits; and
introducing the successive bits into the quantized and/or aliased components to modulate from a few percent to a substantial percentage of the successive components through but slight adjustments of the same, thereby to embed the supplemental data in from a few percent to a substantial percentage of the series of digital measurements without substantially affecting the quality thereof.
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Accused Products
Abstract
A novel technique for high-bandwidth steganographic embedding of supplemental data in a series of digital signals or measurements, such as taken from analog data streams or subsampled and/or transformed digital data, wherein the series of measurements are derived through functional transformations and involving quantization and/or aliasing, with the supplemental data bits modulating or modifying the quantized and/or aliased components with only slight adjustments thereof to embed the supplemental data without substantially affecting the quality of the measurements; and all, preferably, through not exclusively, with the use of least-significant-bit parity encoding designed to choose the appropriate components to be so modulated or modified
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Citations
36 Claims
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1. The method of steganographically embedding substantial supplemental digital data in a series of digital measurements derived from one of an analog data stream and subsampled and/or transformed digital data, that comprises, deriving such series of digital measurements through functional transformation from a set of input data converted into a set of output data of successive quantized and/or aliased components;
- transforming the substantial supplemental digital data into a series of successive bits; and
introducing the successive bits into the quantized and/or aliased components to modulate from a few percent to a substantial percentage of the successive components through but slight adjustments of the same, thereby to embed the supplemental data in from a few percent to a substantial percentage of the series of digital measurements without substantially affecting the quality thereof. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17)
- transforming the substantial supplemental digital data into a series of successive bits; and
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18. Apparatus for steganographically embedding substantial supplemental digital data in a series of digital measurements derived from one of an analog data stream and subsampled and/or transformed digital data, having, in combination, functional transformation means for deriving such series of digital measurements from a set of input data converted into a set of output data of successive quantized and/or aliased components;
- means for transforming the substantial supplemental digital data into a series of successive bits; and
encoder means for introducing the successive bits into the quantized and/or aliased components to modify from a few percent to a substantial percentage of the successive components through but slight adjustments of the same, thereby to embed the supplemental data in from a few to a substantial percentage of the series of digital measurements without substantially affecting the quality thereof. - View Dependent Claims (19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30)
- means for transforming the substantial supplemental digital data into a series of successive bits; and
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31. In a series of digital measurements derived from one of an analog data stream and subsampled and/or transformed digital data, a method of steganographically embedding substantial supplemental digital data representing from a few percent to a substantial percent of the series of digital measurements into the same, that comprises, deriving such series of digital measurements through functional transformation from a set of input data converted into a set of output data of successive quantized and/or aliased components;
- transforming the substantial supplemental digital data into a series of successive bits; and
introducing the successive bits into the quantized and/or aliased components to modulate successive components through but slight adjustments of the same, thereby to embed the supplemental data in the series of digital measurements without substantially affecting the quality thereof, wherein the measurements represent a media file, and the embedded supplemental data provides additional content to the media file format in playback without changing that format and wherein the additional content is selected from the group consisting of an added high-bandwidth digital channel, ads, interactive ads, games, additional program materials, and subtitles and the media is audio, image or video, and further wherein the embedding is effected with least significant-bit parity encoding arranged to choose which measurement or component or coefficient representing the same is to be modified and by which bit, while only minimally affecting the accuracy. - View Dependent Claims (32, 33, 34)
- transforming the substantial supplemental digital data into a series of successive bits; and
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35. The method of steganographically embedding substantial supplemental digital data into a series of digital measurements representing a media file containing audio content derived from one of an analog data stream and subsampled and/or transformed digital data, that comprises, deriving such series of digital measurements through functional transformation from a set of input data converted into a set of output data of successive quantized and/or aliased components;
- transforming the substantial supplemental digital data into a series of successive bits; and
introducing the successive bits at rates of the order of thousands of bits/second and more into the quantized and/or aliased components of the file to modulate successive components through but slight adjustments of the same, thereby to embed the supplemental data in the series of digital measurements of the media file without substantially affecting the quality thereof. - View Dependent Claims (36)
- transforming the substantial supplemental digital data into a series of successive bits; and
Specification