Telesensory Systems
| Company type | Private |
|---|---|
| Industry | Assistive technology |
| Founded | 1970 |
| Founder | James C. Bliss (leadership), John G. Linvill (inventor of initial product) |
| Defunct | March 2005 |
| Fate | Filed for Chapter 7 bankruptcy; intellectual property acquired by InSiPhil (S) Pte Ltd. |
| Headquarters | Palo Alto , United States |
Area served | Worldwide |
| Products | Optacon, Speech+ Calculator, VERT, VersaBraille, OsCar, Vista, Vantage, Aladdin, PICO |
Telesensory Systems, Inc. (TSI)—which was later known as TeleSensory Corporation—was an American enterprise specializing in the creation, design, production, and distribution of assistive technologies aimed at individuals who are blind or have low vision. The company's innovations allowed users with visual impairments to independently interact with computers and printed text.
History
The inception of TSI's initial product, the Optacon, traces back to Electrical Engineering Professor John G. Linvill, who developed it to assist his blind daughter in reading printed material. Under the leadership of James C. Bliss, a team of engineers from Stanford University and Stanford Research Institute (currently SRI International) embarked on this project beginning in 1962. Following a successful prototype demonstration in 1969, TSI was established in 1970 in Palo Alto, California. The company broadened its scope in 1984 by introducing products targeting individuals with low vision alongside its existing blindness aids.
TSI’s devices for the blind primarily utilized tactile feedback or auditory signals to transmit information, whereas their low vision offerings focused on enhancing the size and contrast of text or images displayed on screens or printed materials. Most solutions integrated specialized electronic hardware with accompanying software.
Over a span of 35 years, TSI provided electronic assistive technologies worldwide. However, as operating systems began incorporating free accessibility tools such as screen readers with speech output and magnification features, the firm—renamed TeleSensory—transitioned its emphasis toward low vision devices and discontinued production of blindness aids by the early 1990s.
Operations ceased abruptly when TeleSensory filed for Chapter 7 bankruptcy in March 2005.
Later that year, in August 2005, Singapore-based InSiPhil (S) Pte Ltd. acquired TeleSensory’s intellectual property and assets, reviving manufacturing of select low vision products under the TeleSensory name. By early 2010, these offerings were distributed across 50 countries.
Selected products for blind people
- Optacon, 1970 (a tactile facsimile device enabling reading of printed text)
- Speech+ Calculator, 1975 (calculator featuring synthesized speech output)
- VERT, 1979 (screen reader providing speech output for computer access)
- VersaBraille, 1979 (personal computer equipped with a refreshable braille display)
- OsCar (reading machine using optical character recognition coupled with speech output)
Selected products for visually impaired people
- Vista (software enlarging screen content for computer users)
- Vantage (closed-circuit television magnifier designed for print or image viewing)
- Aladdin (video magnification device)
- PICO (portable handheld video magnifier)