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US4660022A Expired / Lapsed US ⏱️ 0.0 years remaining

System for guiding the blind

Assignee: Individual
•
Filing: 1984-10-29
•
Granted: 1987-04-21
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Expires: 2004-10-29
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Abstract

Abstract A system for guiding the blind including at least one receiver/sound generator unit having a built-in sound generator giving information on the destination of the user, and a receiver for actuating the sound generator in accordance with a control signal coming from outside, and a transmitter/control unit carried by the user for producing the control signal. As the user carrying the transmitter/control unit and approaching the destination at which the receiver/sound generator unit is installed, the user actuates the transmitter/control unit to cause it to produce a control signal which actuates the sound generator of the receiver/sound generator whereby an audio signal representing a voice, an onomatopoeic sound, a chime, etc., is produced to guide the user to the destination.

Inventors

  • 👤 Takeshi Osaka

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-10-25 18:29
CPC Classifications
G; G08; G08B; G08B1/00; G08B1/08; G08G; G08G1/00; G08G1/005

Claims Analysis

Total Claims: 5
Claim 1
Independent Claim 86 words
A system for guiding a blind person to a preselected destination comprising: at least one receiver/sound generator unit disposed at said destination including a sound generator storing data of a predetermined unique content, and a receiver receiving an electromagnetic control signal from outside to actuate said sound generator, said sound generator producing unique sounds indicative of said destination in response to said control signal; and a portable transmitter/control unit carried by said blind person for producing said electromagnetic control signal, upon activation by said blind person.
Claim 2
Independent Claim 86 words
A system for guiding a blind person to a preselected destination comprising: at least one receiver/sound generator unit disposed at said destination including a sound generator storing data of a predetermined unique content, and a receiver receiving an electromagnetic control signal from outside to actuate said sound generator, said sound generator producing unique sounds indicative of said destination in response to said control signal; and a portable transmitter/control unit carried by said blind person for producing said electromagnetic control signal, upon activation by said blind person.
Claim 3
Dependent Claim 39 words
A system for guiding the blind as claimed in claim 1, wherein said sound generator comprises a recording and reproducing system for recording and reproducing the name or address of a place at which said receiver/sound generator is installed.
Claim 4
Dependent Claim 38 words
A system for guiding the blind as claimed in claim 1, wherein said sound generator comprises a voice synthesizing circuit for recording and reproducing the name or address of a place at which said receiver/sound generator is installed.
Claim 5
Dependent Claim 29 words
A system for guiding the blind as claimed in claim 1, wherein said sound generator comprises an onomatopoeic sound generating system producing sound simulating chirping of some small birds.

References Cited (Backward Citations)

US3718896A Cited
US3987403A Cited
US3996950A Cited
US4025922A Cited
US4253083A Cited
US4280204A Cited
US4400786A Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1990-04-20 1990-10-20 1991-04-21 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1994-04-20 1994-10-20 1995-04-21 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1998-04-20 1998-10-20 1999-04-21 $7700.00 Window Closed / Lapsed

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