Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
216 words
A method for the transmission of text messages on a subcarrier associated with a radiophonic carrier frequency, characterized in that message elements are formed consisting of 64 characters and the subcarrier is modulated with a succession of groups of information bits, each group including a code adapted to identify it as a group containing text, a preset number of characters constituting a segment of the message element and a four-bit address adapted to locate said segment within the complete element, characterized in that for the transmission of a message longer than 64 characters the complete message is split into portions no longer than 60 characters and message elements are formed, to be transmitted in successive groups, associating with each successive portion a prefix of four control characters thus composed: a) a message identifier character, susceptible of assuming one of two configurations and adapted to maintain the same configuration in the successive groups of bits for the duration of a same message, and of assuming the other configuration when a different message beings; b) a language identifier character, designating the language in which the message is written; c) a continuity character, identifying the message element contained in the group being transmitted; d) a message length character, identifying the number of message elements which compose the complete message.
Claim 2
Independent Claim
216 words
A method for the transmission of text messages on a subcarrier associated with a radiophonic carrier frequency, characterized in that message elements are formed consisting of 64 characters and the subcarrier is modulated with a succession of groups of information bits, each group including a code adapted to identify it as a group containing text, a preset number of characters constituting a segment of the message element and a four-bit address adapted to locate said segment within the complete element, characterized in that for the transmission of a message longer than 64 characters the complete message is split into portions no longer than 60 characters and message elements are formed, to be transmitted in successive groups, associating with each successive portion a prefix of four control characters thus composed: a) a message identifier character, susceptible of assuming one of two configurations and adapted to maintain the same configuration in the successive groups of bits for the duration of a same message, and of assuming the other configuration when a different message beings; b) a language identifier character, designating the language in which the message is written; c) a continuity character, identifying the message element contained in the group being transmitted; d) a message length character, identifying the number of message elements which compose the complete message.
Claim 3
Dependent Claim
33 words
A method for the transmission of messages according to claim 1, characterized in that said four control characters are selected among those belonging to columns 0 and 1 of the ISO 646 code-tables.
Claim 4
Independent Claim
36 words
A method for the transmission of messages according to claims 1 or 2, characterized in that the two configurations DLE (hexadecimal 1/0) and NAK (hexadecimal 1/5) of the ASCII coding are adopted as message identifier characters.
Claim 5
Independent Claim
44 words
A method for the transmission of messages according to claims 1 or 2 or 3, characterized in that only the fourth block of the Radiotext groups is used for the transmission of the message element, which can thus comprise a maximum of 32 characters.