Burn-in test system for electronic apparatus
US4175286A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jan 19, 1978 |
| Grant date | Nov 20, 1979 |
| Priority date | — |
| Expiry date | Jan 19, 1998 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB41J29/393
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
An electronic apparatus having a keyboard and an output device, such as a thermal printer unit. The apparatus, including its printer unit, is burn-in tested by an electronic system built into the apparatus. The system includes a memory, a circuit for storing a preselected or predetermined alphanumeric code in the memory and a circuit for repetitively causing the printer unit to print the contents of the memory. A delay system may be incorporated which causes the apparatus to enter a wait mode between printing operations. The period of time that the system is in the wait mode may be either a fixed duration or of a selected duration. In the embodiment disclosed, the apparatus is an electronic calculator.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.