Memory device having the function of detecting the locking or unlocking condition of a remote controller
US6097282A · kind A · utility
Inventor
Key dates
| Filing date | Aug 24, 1998 |
| Grant date | Aug 1, 2000 |
| Priority date | — |
| Expiry date | Aug 24, 2018 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG07C2209/62
- WIPO fieldControl
- WIPO sectorInstruments
Abstract
A memory device having the function of detecting the locking or unlocking condition of a remote controller comprises a battery, a key circuit a memory unit, a light emitting element, a testing key, an encoding unit, an infrared ray or a high frequency emitting driving circuit, etc. The positive end of the battery is connected with the power source (V+) of the memory unit. The lock key and unlock key of the key circuit are connected with the respective input end of the memory unit and the encoding unit. The output end of the memory unit is connected with one end of the light emitting element. Another end of the light emitting element is connected with one connection of the testing key and another end of the testing key is grounded. By the action of the testing key, the condition of the remote controller may inform the user. That is, if it is in a lock condition, then the light emitting element will light, while if it is in a "unlock" condition, then the light emitting element will extinguish. Therefore, by the special circuit design, the user may be informed about the message of the remote controller without returning to the original location to know the lock (or unlock) condition o…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.