INFORMATION DELIVERY
First Claim
1. An information delivery system comprising a transmitter unit arranged such that it is capable of performing at least one of:
- 1. receiving a received signal corresponding to an audio signal which is either a digital signal or which the transmitter unit is arranged to process into a digital signal; and
2. receiving a digital signal providing information,and the transmitter unit comprising a digital signal transmitter arranged to modulate, using an on-off modulation scheme, a radio frequency carrier according to either or both digital signals, the system further comprising a receiver unit arranged to receive the modulated carrier such that the received modulated carrier induces power in a digital signal receiver to allow the digital signal to be detected therein and the receiver unit being further arranged to allow either or both of the audio signal and the information to be recovered from the detected digital signal.
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Accused Products
Abstract
An information delivery system comprising a transmitter arranged such that it is capable of performing at least one of, receiving a received signal corresponding to an audio signal, which is either a digital signal or which the transmitter is arranged to process into a digital signal; and receiving a digital signal providing information, and the transmitter being arranged to modulate a radio frequency carrier according to either or both digital signals, the system further comprising a receiver arranged to receive the modulated carrier such that the received modulated carrier induces power in the receiver to allow the digital signal to be detected therein, and the receiver being further arranged to allow either or both of the audio signal and the information to be recovered from the detected digital signal.
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Citations
25 Claims
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1. An information delivery system comprising a transmitter unit arranged such that it is capable of performing at least one of:
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1. receiving a received signal corresponding to an audio signal which is either a digital signal or which the transmitter unit is arranged to process into a digital signal; and 2. receiving a digital signal providing information, and the transmitter unit comprising a digital signal transmitter arranged to modulate, using an on-off modulation scheme, a radio frequency carrier according to either or both digital signals, the system further comprising a receiver unit arranged to receive the modulated carrier such that the received modulated carrier induces power in a digital signal receiver to allow the digital signal to be detected therein and the receiver unit being further arranged to allow either or both of the audio signal and the information to be recovered from the detected digital signal. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 21, 22, 23, 24, 25)
and the transmitter unit being arranged to modulate, using ON-OFF modulation, a radio frequency (RF) carrier according to either or both digital signals.
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22. A receiver unit for use with the transmitter unit of claim 21 which is arranged to receive an ON-OFF modulated carrier such that the received modulated carrier induces power in a digital signal receiver to allow a digital signal to be detected therein and further arranged to allow either or both of an audio signal and information to be recovered from the detected signal.
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23. A receiver unit according to claim 22 which is a hearing aid, or which is arranged to drive a hearing aid.
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24. A program arranged to run on a transmitter unit for use in the system of claim 1 arranged such that it causes the transmitter unit to perform at least one of:
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1. receiving a received signal corresponding to an audio signal which is either a digital signal or which the transmitter unit is arranged to process into a digital signal; and 2. receiving a digital signal providing information, and the program further being arranged to cause the transmitter unit to modulate, using ON-OFF modulation, a radio frequency (RF) carrier according to either or both digital signals.
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25. A program arranged to run on a receiver unit for use with the transmitter unit of claim 21 which is arranged to receive an ON-OFF modulated carrier such that the received modulated carrier induces power in a digital signal receiver and allows a digital signal to be detected therein and wherein the program is arranged to allow either or both of an audio signal and information to be recovered from the detected signal.
- 14. A method of delivering an audio signal and/or an information signal comprising receiving a received signal corresponding to the audio signal and/or the information signal, ensuring that the signal is a digital signal, using the digital signal to modulate, using an ON-OFF modulation scheme, a radio frequency carrier, transmitting, using a digital signal transmitter, the modulated carrier to a receiver unit, and using the received modulated carrier to induce a current in a digital signal receiver which allows the digital signal to be detected within the carrier and thereafter recovered therefrom.
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18. A method according to clam 14 which comprises using a beam shaping antenna within the transmitter unit in order that an area of a predetermined shaped is covered by the modulated carrier.
Specification