| 摘要 |
PCT No. PCT/SE85/00518 Sec. 371 Date Jun. 30, 1986 Sec. 102(e) Date Jun. 30, 1986 PCT Filed Nov. 18, 1985 PCT Pub. No. WO86/03318 PCT Pub. Date Jun. 5, 1986.In a method of establishing, in the reception of messages in the form of characters sent by radio, particularly messages to personnel locators, that the latest of the received messages is identical with a previously received and stored message, there is included identifying the message with guidance from an identity code transmitted in the message. The code is either a part, i.e. a so-called block of the message or a character combination in the message. There is further included giving particular treatment to a received message with the same identity code as one already stored such as ignoring it. A receiver for carrying out the method includes a receiver aerial, a radio part, a demodulator, a decoder for the address of the receiver, a signal processor which in turn contains a register for a message, a message memory for more than one message and a comparator for comparing an identity code in the message in the register with the identity codes in the messages in the message memory and, on agreement for storing information thereon. |
