Transponder communications system
First Claim
1. A unit for providing messages emanating from a remote station to a user, comprising a transponder section for communicating with the remote station by a wireless mode of communication, and a data processing section, wherein the transponder section includes means for storing an identification code, means that are responsive to an interrogation signal from the remote station to emit an identification signal bearing the identification code, means that are responsive to incoming data signals including an address code, which may be the same as or derived from the identification code, and means for providing the incoming data to the data processing section, and wherein the data processing section includes means for providing an audio and/or visual output for the user of the unit, further characterized in that the unit further comprises means responsive to the audio output to generate a modulated signal for emitting externally of the unit.
1 Assignment
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Accused Products
Abstract
A unit (1) for use in a vehicle is interrogated and identified by a fixed interrogator (2). A wireless form of communication is established between the unit (1) and interrogator (2) to permit transfer of data to the unit (1). As well as appropriate communication circuitry (12) and an identification store (19), the unit (1) includes processing of the incoming data by a microprocessor (32) to provide an audio signal for energizing a loud speaker (36) in the unit (1) to provide a sound output for the vehicle occupants. The unit is powered by internal batteries (22, 38) to be usable even when the vehicle ignition is turned off. The unit (1) is made self-contained to be mounted wherever convenient. The principle can be extended to providing data to control a visual display in the unit (1). The unit (1) may be provided with a user-interactive input such as a keypad (48). A radio link is described but other wireless means of communication are feasible.
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Citations
8 Claims
- 1. A unit for providing messages emanating from a remote station to a user, comprising a transponder section for communicating with the remote station by a wireless mode of communication, and a data processing section, wherein the transponder section includes means for storing an identification code, means that are responsive to an interrogation signal from the remote station to emit an identification signal bearing the identification code, means that are responsive to incoming data signals including an address code, which may be the same as or derived from the identification code, and means for providing the incoming data to the data processing section, and wherein the data processing section includes means for providing an audio and/or visual output for the user of the unit, further characterized in that the unit further comprises means responsive to the audio output to generate a modulated signal for emitting externally of the unit.
- 3. A unit for providing messages emanating from a remote station to a user, comprising a transponder section for communicating with the remote station by a wireless mode of communication, and a data processing section, wherein the transponder section includes means for storing an identification code, means that are responsive to an interrogation signal from the remote station to emit an identification signal bearing the identification code, means that are responsive to incoming data signals including an address code, which may be the same as or derived from the identification code, and means for providing the incoming data to the data processing section, and wherein the data processing section includes means for providing an audio and visual output for the user of the unit, further characterized in that the unit is contained within a housing including one or more batteries for powering the transponder section and the data processing section.
Specification