Method and apparatus in radio reception for avoiding storing a message more than once
US4764928A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Jun 30, 1986 |
| Grant date | Aug 16, 1988 |
| Priority date | — |
| Expiry date | Jun 30, 2006 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L1/08
- WIPO fieldControl
- WIPO sectorInstruments
Abstract
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.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.