| 摘要 |
FIELD: communication. SUBSTANCE: invention can be used for emergency call of registered or team of doctors on duty. According to method, aline with transmission, reception and memorizing the call signal in radio frequency range, call signal is transmitted in infrared range, and reset of memory is provided automatically by call signal in infrared range in close vicinity to transmitter. EFFECT: improved reliability of call owing to provision of automatic clearing of call on receiver only in close vicinity to transmitter. 4 dwg |
