FR1477884A - Appareil auxiliaire amélioré à l'usage des aveugles - Google Patents

Appareil auxiliaire amélioré à l'usage des aveugles

Info

Publication number
FR1477884A
FR1477884A FR59255A FR59255A FR1477884A FR 1477884 A FR1477884 A FR 1477884A FR 59255 A FR59255 A FR 59255A FR 59255 A FR59255 A FR 59255A FR 1477884 A FR1477884 A FR 1477884A
Authority
FR
France
Prior art keywords
blind
auxiliary device
improved auxiliary
improved
auxiliary
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
FR59255A
Other languages
English (en)
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
NAT RES DEV
National Research Development Corp UK
Original Assignee
NAT RES DEV
National Research Development Corp UK
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from GB17983/65A external-priority patent/GB1098927A/en
Application filed by NAT RES DEV, National Research Development Corp UK filed Critical NAT RES DEV
Priority to FR59255A priority Critical patent/FR1477884A/fr
Application granted granted Critical
Publication of FR1477884A publication Critical patent/FR1477884A/fr
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09B—EDUCATIONAL OR DEMONSTRATION APPLIANCES; APPLIANCES FOR TEACHING, OR COMMUNICATING WITH, THE BLIND, DEAF OR MUTE; MODELS; PLANETARIA; GLOBES; MAPS; DIAGRAMS
    • G09B21/00—Teaching, or communicating with, the blind, deaf or mute
    • G09B21/001—Teaching or communicating with blind persons
    • G09B21/006—Teaching or communicating with blind persons using audible presentation of the information
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
    • G01S15/00—Systems using the reflection or reradiation of acoustic waves, e.g. sonar systems
    • G01S15/02—Systems using the reflection or reradiation of acoustic waves, e.g. sonar systems using reflection of acoustic waves
    • G01S15/06—Systems determining the position data of a target
    • G01S15/08—Systems for measuring distance only
    • G01S15/32—Systems for measuring distance only using transmission of continuous waves, whether amplitude-, frequency-, or phase-modulated, or unmodulated
    • G01S15/34—Systems for measuring distance only using transmission of continuous waves, whether amplitude-, frequency-, or phase-modulated, or unmodulated using transmission of continuous, frequency-modulated waves while heterodyning the received signal, or a signal derived therefrom, with a locally-generated signal related to the contemporaneously transmitted signal
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
    • G01S15/00—Systems using the reflection or reradiation of acoustic waves, e.g. sonar systems
    • G01S15/87—Combinations of sonar systems

Landscapes

  • Engineering & Computer Science (AREA)
  • Remote Sensing (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Educational Administration (AREA)
  • Educational Technology (AREA)
  • Health & Medical Sciences (AREA)
  • Theoretical Computer Science (AREA)
  • Business, Economics & Management (AREA)
  • General Health & Medical Sciences (AREA)
  • Audiology, Speech & Language Pathology (AREA)
  • Acoustics & Sound (AREA)
FR59255A 1965-04-29 1966-04-27 Appareil auxiliaire amélioré à l'usage des aveugles Expired FR1477884A (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR59255A FR1477884A (fr) 1965-04-29 1966-04-27 Appareil auxiliaire amélioré à l'usage des aveugles

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB17983/65A GB1098927A (en) 1965-04-29 1965-04-29 A new or improved blind aid
FR59255A FR1477884A (fr) 1965-04-29 1966-04-27 Appareil auxiliaire amélioré à l'usage des aveugles

Publications (1)

Publication Number Publication Date
FR1477884A true FR1477884A (fr) 1967-04-21

Family

ID=26170255

Family Applications (1)

Application Number Title Priority Date Filing Date
FR59255A Expired FR1477884A (fr) 1965-04-29 1966-04-27 Appareil auxiliaire amélioré à l'usage des aveugles

Country Status (1)

Country Link
FR (1) FR1477884A (fr)

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