Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
141 words
A multichannel communication system comprising a plurality of radio units each radio unit having a channel search facility comprising scanning means for scanning at periodic intervals the channels of the communication system to determine as required whether a channel is free for setting up an outgoing call or has an incoming call for that radio unit, characterised in that the scanning means is operable in a first scan mode for scanning predefined primary channels and is also operable in subsequent scan modes for scanning secondary, tertiary, and residue channels defining the remainder of the available channels of the communication system, the subsequent scan modes being initiated when a predetermined number of channels in a previous segment said predetermined number being less than the total number of channels in that segment have been scanned and identified as being either unavailable for a
Claim 2
Dependent Claim
141 words
A multichannel communication system comprising a plurality of radio units each radio unit having a channel search facility comprising scanning means for scanning at periodic intervals the channels of the communication system to determine as required whether a channel is free for setting up an outgoing call or has an incoming call for that radio unit, characterised in that the scanning means is operable in a first scan mode for scanning predefined primary channels and is also operable in subsequent scan modes for scanning secondary, tertiary, and residue channels defining the remainder of the available channels of the communication system, the subsequent scan modes being initiated when a predetermined number of channels in a previous segment said predetermined number being less than the total number of channels in that segment have been scanned and identified as being either unavailable for a
Claim 3
Dependent Claim
22 words
A system as claimed in claim 1, wherein the radio units are base units and handset units of a cordless telephone system.
Claim 4
Dependent Claim
16 words
A system as claimed in claim 2, wherein there are more handset units than base units.
Claim 5
Dependent Claim
29 words
A system as claimed in claim 2 or 3, wherein each radio unit has a processor loaded with a program which is used to execute a channel search algorithm.
Claim 6
Dependent Claim
44 words
A system as claimed in claim 4, wherein each handset unit has a unique identification code stored in the processor thereof, and each base unit has the identification codes stored in the processor thereof of all the handset units with which it can communicate.
Claim 7
Dependent Claim
35 words
A system as claimed in claim 5, wherein the processor of each radio unit computes a start point from which the channels are searched and causes a frequency synthesiser to be set to the selected
Claim 8
Dependent Claim
36 words
A system as claimed in claim 6, wherein the radio units scan the channels to ascertain if a channel has a call destined for it, whereupon the radio unit stops the channel search and completes a
Claim 9
Dependent Claim
31 words
A system as claimed in claim 7, wherein the channel band is split into four segments for searching, and comprises primary, secondary, tertiary and residue channels, and are set at fixed
Claim 10
Dependent Claim
16 words
A system as claimed in claim 8, wherein the segments accessed is dependent upon traffic conditions.