Method and apparatus for magnetically recording vehicle running conditions
US4137553A · kind A · utility
12Cited by
4References
3Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jan 3, 1977 |
| Grant date | Jan 30, 1979 |
| Priority date | — |
| Expiry date | Jan 3, 1997 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG07C5/0841
- WIPO fieldControl
- WIPO sectorInstruments
Abstract
In a method for magnetically recording a vehicle condition, a voltage proportional to a vehicle speed is sampled at a predetermined interval and converted into a code signal which is temporarily memorized by a memory. When the memorized data reach a predetermined amount, the data are transferred to be recorded by a magnetic tape for a period which is short enough not to prevent the memory from memorizing. When all the data have been recorded, a completion signal is generated to stop the tape, whereby the inter record gap is limited to minimum length.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.