System and method for extracting, decoding, and utilizing hidden data embedded in audio signals

    公开(公告)号:AU5381101A

    公开(公告)日:2001-11-07

    申请号:AU5381101

    申请日:2001-04-26

    Applicant: QUALCOMM INC

    Inventor: JACOBS PAUL E

    Abstract: A system and method for enabling a user to retrieve, decode, and utilize hidden data embedded in audio signals. An exemplary implementation includes a microphone structured to receive sound waves representative of an audio signal and hidden data embedded in the audio signal. The then microphone converts the received sound waves into an electrical output signal. The system also includes a processor electrically coupled to the microphone and configured to receive the electrical output signal in order to extract the hidden data and provide information represented by the hidden data as an output thereof. A user interface is also provided and is electrically coupled to the processor and configured to receive a first input from the user and activate the processor to selectively initiate extraction of the hidden data. The processor produces as an output the information represented by the hidden data. Finally, the system includes a user presentation mechanism configured to present the information to the user.

    АБОНЕНТСЬКА СИСТЕМА І СПОСІБ РОБОТИ З НЕЮ

    公开(公告)号:UA42049C2

    公开(公告)日:2001-10-15

    申请号:UA97074007

    申请日:1996-01-31

    Applicant: QUALCOMM INC

    Abstract: Винахідвідноситьсядобезпровіднихтелефоннихсистем, зокремадосотовихтелефоннихсистемз зниженоювартістюобслуговування. Абонентськасистема, якаміститьрадіочастотну (РЧ) трансивернусистемудляприйомутапередачірадіочастотнихсигналів, сукупністьабонентськихпристроївтасукупністьмодемівдлязабезпеченнявзаємодіїміжозначеноюсукупністюабонентськихпристроїві означеноютрансиверноюсистемою, причомукількістьмодеміву означенійсукупностімодемівменшазакількістьабонентськихпристроїву означенійсукупностіабонентськихпристроїв.

    System and method for facsimile data transmission

    公开(公告)号:HK1025858A1

    公开(公告)日:2000-11-24

    申请号:HK00103283

    申请日:1998-08-21

    Applicant: QUALCOMM INC

    Abstract: In a method for minimizing a data bottleneck in a Low Data Rate Network (LDRN) (34), i.e. a facsimile network having a transmission rate less than the data rate of the facsimile machines serviced by the network, the LDRN (34) has a one-dimensional image data format and a two-dimensional image data format. The method comprises processing the facsimile transmissions in order to make the data rates of the LDRN and the FAX machines compatible, thereby minimizing any potential facsimile data bottlenecks that may occur in the LDRN due to its slower data rate. In the method, a first facsimile (FAX) machine (12) is set to the one-dimensional image data format; a data stream encoded in the one-dimensional image data format is sent (32) from the first FAX machine (12) to a first side of the LDRN (34); the data stream sent is uncompressed, and the uncompressed data stream is re-encoded into the two-dimensional image data format; the re-encoded data stream is transmitted from the first side of the LDRN (34) to a second side of the LDRN (34); the transmitted data stream is second uncompressed; the second uncompressed data stream is second re-encoded into the one-dimensional image data format; and the re-encoded data stream is second sent (36) from the second side of the LDRN (34) to a second FAX machine (16).

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