Multi-symbol message communicator for a speechless, handicapped person
Patent 4241521 Issued on December 30, 1980. Estimated Expiration Date: 
December 30, 1997. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.
December 30, 1997. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.Patent ReferencesInventorApplicationNo. 05/722676 filed on 09/13/1976US Classes:434/112, COMMUNICATION AIDS FOR THE HANDICAPPED340/825.19Communication or control for the handicappedExaminersPrimary: Hum, Vance Y.Attorney, Agent or FirmInternational ClassG09B 21/00 (20060101)AbstractApparatus is provided for facilitating communication of a multi-symbol message by a speechless, handicapped person. The apparatus includes a plurality of independently selectable symbol indicators, preferably arranged in a matrix, and each including an electrically energizable light source such as a light emitting diode that is energized when the symbol is selected. As an aid to message composition, an individually selected one of the symbol indicators serves as a cursor. The apparatus receives signals supplied by an actuator accessory for defining commands including a cursor-move command and a record command. Upon completion of message composition, the apparatus provides for automatically selecting each symbol indicator that had served as the cursor at the time of receipt of a record command. | |
