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Patent Searching and Data


Title:
SOUND GENERATOR FOR GUIDING VISUALLY HANDICAPPED PERSON AND INFORMATION GUIDANCE DEVICE FOR THE PERSON
Document Type and Number:
Japanese Patent JP2001228793
Kind Code:
A
Abstract:

To provide a low cost device to guide a visually handicapped person in which absolute minimum functions are provided so as to provide guidance information such as present position to the person and maintenance work load is reduced.

A sound generator 1 simply generates periodic sound to guide a visually handicapped person. The generator 1 consists of a timing circuit 8 which generates pulse signals having a prescribed period, a CR generating circuit 9 which outputs AC signals having a prescribed frequency within an audible band in accordance with the output of the circuit 8, a buzzer 6 which outputs audible sound to the external based on the AC signals and a battery 7 which supplies electric power to each section. The buzzer 6 continuously outputs audible sound while the battery 7 starts supplying power to the sections till finishes the supply.


Inventors:
TAKAI TAKUO
Application Number:
JP2000017321A
Publication Date:
August 24, 2001
Filing Date:
January 26, 2000
Export Citation:
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Assignee:
RICOH MICROELECTRONICS CO LTD
International Classes:
G09B21/00; A61F9/08; G04B25/02; G09F25/00; (IPC1-7): G09B21/00; A61F9/08; G04B25/02; G09F25/00
Attorney, Agent or Firm:
Kuroda Toshi