Mode selecting device having a time delay between selection and establishment of an operating mode for tape recording and/or recording apparatus
US3940800A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | May 24, 1974 |
| Grant date | Feb 24, 1976 |
| Priority date | — |
| Expiry date | May 24, 1994 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01H13/70
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
In a tape recording and/or reproducing apparatus in which various operating modes thereof are selected by selective actuation of corresponding push-buttons and the actual force for establishing the selected operating mode is derived from an electrically energized driver, such as a solenoid; the energizing of the driver in response to actuation of any one of the mode selecting push-buttons is delayed for a predetermined time following such actuation so that in the event of the fairly rapid, successive actuation of two or more of the push-buttons, the driver is energized only when the predetermined time has elapsed after the last actuation to establish only the operating mode corresponding to the last actuated push-button for avoiding damage to, or malfunction of the apparatus. Further, the presence and absence of a tape cassette on the apparatus is detected and energizing of the driver is permitted no sooner than the previously mentioned predetermined time after the presence of a cassette is detected, so as to avoid damage to the cassette and/or to a magnetic head or heads of the apparatus in the event that the push-button for selecting the normal forward, that is recording or repro…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.