Dialogic style RF guidance system for a visually handicapped person and its control method
First Claim
Patent Images
1. An interactive RF guidance system comprising:
- a) a plurality of stationary base-sets established at a road crossing to perform functions requested by hand-held apparatus; and
b) a plurality of hand-held apparatuses capable of being carried along by visually handicapped people to transmit messages to said base-sets and receive responses from them;
(a) said base-set comprising;
a microprocessor which controls overall operation of the base-set;
an antenna which transmits to and receives messages from the hand-held apparatus;
an RF module which comprises a duplexer that duplexes the transmission signal and the received signal so that interference is avoided when using the same antenna for both transmitting and receiving and a receiver that processes an MSK (Minimum Shift Keying) signal received from the hand-held apparatus through the antenna and duplexer to output that signal onto an MSK input amplifier, and a transmitter that modulates a voice signal that has been synthesized by a voice synthesizer chip under control of the microprocessor on demand of the hand-held apparatus and transmits that modulated signal to the hand-held apparatus through the duplexer and the antenna;
said MSK input amplifier which amplifies the MSK input signal generated from the RF module receiver to output that signal into the microprocessor;
said voice synthesizer chip which synthesizes a voice signal using the information produced by the microprocessor, to transfer the signal onto other base-sets or to output that signal through an internal speaker according to demand received from the hand-held apparatus;
a voice amplifier which amplifies the signal generated from the voice synthesizer chip and outputs that voice to a speaker;
a battery;
an ID setting switch which has multiple rotary switches and a 3-state buffer in order to set a building'"'"'s own ID; and
a relay and connector which control an external signal lamp according to the demand of the hand-held apparatus; and
(b) wherein said hand-held apparatus comprises;
a keypad, by which a user requests the microprocessor to execute functions and having multiple numeric keys and function keys to request execution of wished functions;
a microprocessor, which executes functions requested by the keypad and controls overall operation of said apparatus;
an antenna, which transmits and receives signals;
an RF module, which processes and outputs signals to transmit through the antenna, and processes and outputs a voice signal received through a voice amplifier;
said voice amplifier, which amplifies the received voice signal, to output that signal onto an earphone under control of the microprocessor;
a battery, which supplies power to the apparatus;
a low voltage sensor, which senses low level voltage produced when voltage supplied by the battery drops under a proper level and outputs that data onto the microprocessor;
an impact sensor which senses the shock generated when the apparatus falls down to the ground and outputs that data to the microprocessor; and
a buzzer and an LED (Light Emission Diode), which notify replacement time of the battery or apprise the user that the apparatus has fallen down to the ground in addition to mentioned compositions.
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Accused Products
Abstract
The dialogic style RF guidance system comprises multiple stationary base-sets established at the destination and the hand-held apparatus carried along by the visually handicapped people. This provides safe and efficient guidance to visually handicapped people in reaching their destinations, and more conveniently communicates with the base-set and simultaneously receives the message from the base-set through the microphones or external speakers.
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Citations
15 Claims
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1. An interactive RF guidance system comprising:
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a) a plurality of stationary base-sets established at a road crossing to perform functions requested by hand-held apparatus; and b) a plurality of hand-held apparatuses capable of being carried along by visually handicapped people to transmit messages to said base-sets and receive responses from them; (a) said base-set comprising; a microprocessor which controls overall operation of the base-set; an antenna which transmits to and receives messages from the hand-held apparatus; an RF module which comprises a duplexer that duplexes the transmission signal and the received signal so that interference is avoided when using the same antenna for both transmitting and receiving and a receiver that processes an MSK (Minimum Shift Keying) signal received from the hand-held apparatus through the antenna and duplexer to output that signal onto an MSK input amplifier, and a transmitter that modulates a voice signal that has been synthesized by a voice synthesizer chip under control of the microprocessor on demand of the hand-held apparatus and transmits that modulated signal to the hand-held apparatus through the duplexer and the antenna; said MSK input amplifier which amplifies the MSK input signal generated from the RF module receiver to output that signal into the microprocessor; said voice synthesizer chip which synthesizes a voice signal using the information produced by the microprocessor, to transfer the signal onto other base-sets or to output that signal through an internal speaker according to demand received from the hand-held apparatus; a voice amplifier which amplifies the signal generated from the voice synthesizer chip and outputs that voice to a speaker; a battery; an ID setting switch which has multiple rotary switches and a 3-state buffer in order to set a building'"'"'s own ID; and a relay and connector which control an external signal lamp according to the demand of the hand-held apparatus; and (b) wherein said hand-held apparatus comprises; a keypad, by which a user requests the microprocessor to execute functions and having multiple numeric keys and function keys to request execution of wished functions; a microprocessor, which executes functions requested by the keypad and controls overall operation of said apparatus; an antenna, which transmits and receives signals; an RF module, which processes and outputs signals to transmit through the antenna, and processes and outputs a voice signal received through a voice amplifier; said voice amplifier, which amplifies the received voice signal, to output that signal onto an earphone under control of the microprocessor; a battery, which supplies power to the apparatus; a low voltage sensor, which senses low level voltage produced when voltage supplied by the battery drops under a proper level and outputs that data onto the microprocessor; an impact sensor which senses the shock generated when the apparatus falls down to the ground and outputs that data to the microprocessor; and a buzzer and an LED (Light Emission Diode), which notify replacement time of the battery or apprise the user that the apparatus has fallen down to the ground in addition to mentioned compositions. - View Dependent Claims (2, 3, 4, 5)
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6. An interactive RF guidance system comprising:
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a) a plurality of stationary base-sets established at a bus to perform functions requested by hand-held apparatus; and b) a plurality of hand-held apparatuses capable of being carried along by visually handicapped people to transmit messages to said base-sets and receive responses from them; (a) said base-set comprising; a microprocessor which controls overall operation of the base-set; an antenna which transmits to and receives messages from the hand-held apparatus; an RF module which comprises a duplexer that duplexes the transmission signal and the received signal so that interference is avoided when using the same antenna for both transmitting and receiving and a receiver that processes an MSK (Minimum Shift Keying) signal received from the hand-held apparatus through the antenna and duplexer to output that signal onto the MSK input amp, and a transmitter that modulates the voice signal that has been synthesized by the voice synthesizer chip under control of the microprocessor on demand of the hand-held apparatus and transmits that modulated signal to the hand-held apparatus through the duplexer and the antenna; said MSK input amplifier which amplifies the MSK input signal generated from the RF module receiver to output that signal into the microprocessor; said voice synthesizer chip which synthesizes a voice signal using information produced by the microprocessor, to transfer the signal onto other base-sets or to output that signal through an internal speaker according to demand received from the hand-held apparatus; a voice amplifier which amplifies the signal generated from the voice synthesizer chip and outputs that voice to a speaker; a battery; an ID setting switch which has multiple rotary switches and a 3-state buffer in order to set a building'"'"'s own ID; and a connector which is used in interfacing with a bus driver for providing a bus stop sound generating signal to the microprocessor in response to a request from the hand-held apparatus; and (b) wherein said hand-held apparatus comprises; a keypad, by which a user requests a microprocessor to execute functions and having multiple numeric keys and function keys to request execution of wished functions; the microprocessor, which executes functions requested by the keypad and controls overall operation of said apparatus; an antenna, which transmits and receives signals; an RF module, which processes and outputs signals to transmit through the antenna, and processes and outputs voice signals received through a voice amplifier; said voice amplifier, which amplifies the received voice signal to output that signal onto an earphone under control of the microprocessor; a battery, which supplies power to the apparatus; a low voltage sensor, which senses low level voltage produced when voltage supplied by the battery drops under a proper level and outputs that data onto the microprocessor; an impact sensor which senses the shock generated when the apparatus falls down to the ground and outputs that data to the microprocessor; and a buzzer and a LED (Light Emission Diode), which notify replacement time of the battery or apprise the user that the apparatus has fallen down to the ground in addition to mentioned compositions. - View Dependent Claims (7, 8, 9, 10)
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11. An interactive RF guidance system comprising:
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a) a plurality of stationary base-sets established at a bus stop to perform functions requested by hand-held apparatus; and b) a plurality of hand-held apparatuses capable of being carried along by visually handicapped people to transmit messages to said base-sets and receive responses from them; (a) said base-set comprising; a microprocessor which controls overall operation of the base-set; an antenna which transmits to and receives messages from the hand-held apparatus; an RF module which comprises a duplexer that duplexes the transmission signal and the received signal so that the interference is avoided when using the same antenna for both of transmitting and receiving and a receiver that processes an MSK (Minimum Shift Keying) signal received from the hand-held apparatus through the antenna and duplexer to output that signal onto an MSK input amplifier, and a transmitter that modulates a voice signal that has been synthesized by the voice synthesizer chip under control of the microprocessor on demand of the hand-held apparatus and transmits that modulated signal to the hand-held apparatus through the duplexer and the antenna; said MSK input amplifier which amplifies the MSK input signal generated from the RF module receiver to output that signal into the microprocessor; said voice synthesizer chip which synthesizes the voice signal using the information produced by the microprocessor, to transfer the signal onto other base-sets or to output that signal through an internal speaker according to demand received from the hand-held apparatus; a voice amplifier which amplifies the signal generated from the voice synthesizer chip and outputs that voice to a speaker; a battery; an ID setting switch which has multiple rotary switches and a 3-state buffer in order to set a building'"'"'s own ID; and a transmitter at the RF module for a bus call; and (b) wherein said hand-held apparatus comprises; a keypad, by which a user requests the microprocessor to execute functions and having multiple numeric keys and function keys to request execution of wished functions; a microprocessor, which executes functions requested by the keypad and controls overall operation of said apparatus; an antenna, which transmits and receives signals; an RF module, which processes and outputs signals to transmit through the antenna, and processes and outputs a voice signal received through a voice amplifier; said voice amplifier, which amplifies the received voice signal to output that signal onto an earphone under control of the microprocessor; a battery, which supplies power to the apparatus; a low voltage sensor, which senses low level voltage produced when voltage supplied by the battery drops under a proper level and outputs that data onto the microprocessor; an impact sensor which senses the shock generated when the apparatus falls down to the ground and outputs that data to the microprocessor; and a buzzer and a LED (Light Emission Diode), which notify replacement time of the battery or apprise the user that the apparatus has fallen down to the ground in addition to mentioned compositions. - View Dependent Claims (12, 13, 14, 15)
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Specification