Towards Displaying Graphics on a Cheap, Large-Scale Braille Display

Wilhelm, Elisabeth; Schwarz, Thorsten; Jaworek, Gerhard; Voigt, A.; Rapp, Bastian E.

doi:10.1007/978-3-319-08596-8_102

Cited by 6 publications

(11 citation statements)

References 8 publications

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“…Voice-coil motors and piezoelectric actuators may also provide solutions for larger displays (see Vidal-Verdú & Hafez, 2007;O'Modhrain et al, 2015 for reviews). Wilhelm et al (2014) developed a prototype based on microfluidic phase change actuators. The actuators are filled in with a phase change material that can be heated.…”

Section: Iii43 Shape-changing Interfacesmentioning

confidence: 99%

Accessible Interactive Maps for Visually Impaired Users

Ducasse

Brock

Jouffrais

2017

Mobility of Visually Impaired People

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Section: Iii43 Shape-changing Interfacesmentioning

confidence: 99%

Accessible Interactive Maps for Visually Impaired Users

Ducasse

Brock

Jouffrais

2017

Mobility of Visually Impaired People

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“…Raising the pressure in the cavity (by air-or fluid-pressure) will cause the film to form a bubble (blister) which will resemble a single Braille-dot [11]. Often so called Electro-Rheological Fluids (ERF) are used which change from low to high viscosity when an electric field is applied.…”

Section: Alternative Actuators For Forming Single Braille-dotsmentioning

confidence: 99%

BrailleRing: The Shortest Long Braille-Display in the World – A Review of the State-of-the-Art and a New Approach

Zagler

Treml²,

Busse³

et al. 2018

Lecture Notes in Computer Science

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Abstract. After paying tribute to the ground-breaking invention of the tactile alphabet by Louis Braille, the paper describes the technological development of so-called refreshable Braille-Displays in significant steps from the late 1970s up till now. Despite quite many R&D efforts over these 40 years, all BrailleDisplays presently available on the market in principle follow the same construction scheme as disclosed by Tetzlaff in 1981: Piezo-electric benders which move small pins up-and down [1]. In order to overcome several drawbacks of the classical solutions, we propose and investigate a radically new approach, where different combinations of rigid tactile points are placed on the surfaces of rotating cuboids which are arranged inside of a rotating cylinder. The lower half of the cylinder resembles the reading area for the finger, whereas a group of a few actuators by rotating said cuboids produces new text-content in the upper half. This can result not only in a complete new way of mobile and reasonably priced Braille reading equipment but also in a revival of Braille worldwide.

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“…Many alternative approaches have been discussed, including shape memory alloys [3], pneumatic or hydraulic drives [4,5] and direct skin stimulation by electric current [6]. But none of these concepts was able to leave their early prototype phases.…”

Section: Introductionmentioning

confidence: 99%

BrailleRing: a flexible Braille display

Treml

Busse

Dünser

et al. 2020

Current Directions in Biomedical Engineering

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The “BrailleRing” is a refreshable Braille display that allows blind people to read tactile characters on the inside of a rotating ring. Dots are not displayed by moving pins, but by fixed patterns on rotating cuboids. The concept allows for a flexible line-length as well as for a more robust and easy-to-clean device, because it needs far fewer actuators than piezo-electric Braille displays, and these actuators are mechanically isolated from the Braille cells.

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Towards Displaying Graphics on a Cheap, Large-Scale Braille Display

Cited by 6 publications

References 8 publications

Accessible Interactive Maps for Visually Impaired Users

Accessible Interactive Maps for Visually Impaired Users

BrailleRing: The Shortest Long Braille-Display in the World – A Review of the State-of-the-Art and a New Approach

BrailleRing: a flexible Braille display

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