Method for a cordless telephone with division of channels into groups of channels

Claim 2

In a method of facilitating a connection between a parent telephone and a child telephone in a cordless telephone system where the parent telephone is be connected with the child telephone for transmission and reception of speech data in a time-sharing manner, and where the connection between the parent telephone and child telephone is be made using one of a plurality of channels, the method comprising the steps of: dividing the plurality of channels into a plurality of groups; assigning one of the groups to the parent telephone; sending a request for connection from the parent telephone to the child telephone when the parent telephone is to be connected with the child telephone using a channel belonging to the assigned group; alternately repeating, while the child telephone is on standby, a mode in which the child telephone sequentially receives the channels assigned to the parent telephone and a mode in which the child telephone stops its operation for a predetermined period of time; and connecting the child telephone to the parent telephone, when the child telephone receives the request for connection from the parent telephone while the child telephone is on standby, using the channel over which the request for connection is transmitted.

Claim 3

In a method for facilitating connections between parent telephones and child telephones in a cordless telephone system where a plurality of child telephones are registered with one parent telephone, one child telephone is be registered with a plurality of parent telephones, one channel is selected from a plurality of channels, and the selected one channel is used by a predetermined parent telephone and a predetermined child telephone for transmission and reception in a time-sharing manner to transmit and receive speech data therebetween, the method comprising the steps of: dividing the plurality of channels into a plurality of groups; assigning one of the groups to the parent telephone; sending a request for connection from the parent telephone to the child telephone when the parent telephone is to be connected with the child telephone using a channel belonging to the assigned group; alternately repeating, while the child telephone is on standby, a mode in which the child telephone sequentially receives the channels assigned to the parent telephone and a mode in which the child telephone stops its operation for a predetermined period of time; and connecting the child telephone to the parent telephone, when the child telephone receives the request for connection from the parent telephone while the child telephone is on standby, using the channel over which the request for connection is transmitted.

Claim 4

In a method for facilitating connections between parent telephones and child telephones in a cordless telephone system where a plurality of child telephones are registered with one parent telephone, one child telephone is be registered with a plurality of parent telephones, one channel is selected from a plurality of channels, and the selected one channel is used by a predetermined parent telephone and a predetermined child telephone for transmission and reception in a time-sharing manner to transmit and receive speech data therebetween, the method comprising the steps of: dividing the plurality of channels into a plurality of groups; assigning one of the groups to the parent telephone; sending a request for connection from the parent telephone to the child telephone when the parent telephone is to be connected with the child telephone using a channel belonging to the assigned group; alternately repeating, while the child telephone is on standby, a mode in which the child telephone sequentially receives the channels assigned to the parent telephone and a mode in which the child telephone stops its operation for a predetermined period of time; and connecting the child telephone to the parent telephone, when the child telephone receives the request for connection from the parent telephone while the child telephone is on standby, using the channel over which the request for connection is transmitted.

Claim 5

The method according to claim 1 wherein the group assigned to the parent telephone is changed when a user operates a predetermined key.

Claim 6

The method according to claim 1 further including the steps of: making a list of used channels by the parent telephone; and changing the group assigned to the parent telephone at a predetermined time such that the group assigned to the parent telephone will be changed to the group having the greatest number of unused channels.

Claim 9

In a method of facilitating a connection between a parent telephone and a child telephone, having a child telephone microcomputer and a child telephone memory, in a cordless telephone system where the parent telephone is connected with the child telephone for transmission and reception of speech data in a time-sharing manner, and where the connection between the parent telephone and child telephone is made using one of a plurality of channels, the method comprising the steps of: dividing the plurality of channels into a plurality of groups; assigning one of the groups to the parent telephone; sending a request for connection from the parent telephone to the child telephone when the parent telephone is to be connected with the child telephone using a channel belonging to the assigned group; alternately repeating, under the control of the child telephone microcomputer, a mode in which the child telephone sequentially receives the channels assigned to the parent telephone, which are stored in the child telephone memory, and a mode in which the child telephone stops its operation for a predetermined period of time, while the child telephone is on standby; and connecting the child telephone to the parent telephone, when the child telephone receives the request for connection from the parent telephone while the child telephone is on standby, using the channel over which the request for connection is transmitted.

Claim 10

In a method of facilitating a connection between a parent telephone and a child telephone, having a child telephone microcomputer and a child telephone memory, in a cordless telephone system where the parent telephone is connected with the child telephone for transmission and reception of speech data in a time-sharing manner, and where the connection between the parent telephone and child telephone is made using one of a plurality of channels, the method comprising the steps of: dividing the plurality of channels into a plurality of groups; assigning one of the groups to the parent telephone; sending a request for connection from the parent telephone to the child telephone when the parent telephone is to be connected with the child telephone using a channel belonging to the assigned group; alternately repeating, under the control of the child telephone microcomputer, a mode in which the child telephone sequentially receives the channels assigned to the parent telephone, which are stored in the child telephone memory, and a mode in which the child telephone stops its operation for a predetermined period of time, while the child telephone is on standby; and connecting the child telephone to the parent telephone, when the child telephone receives the request for connection from the parent telephone while the child telephone is on standby, using the channel over which the request for connection is transmitted.

Claim 11

A cordless telephone system for making a connection between a parent telephone and a child telephone where the parent telephone is to be connected with the child telephone for transmission and reception of speech data in a time-sharing manner, and where the connection between the parent telephone and child telephone is be made using one of a plurality of channels, the cordless telephone system comprising: means for dividing the plurality of channels into a plurality of groups; means for assigning one of the groups to the parent telephone; means for sending a request for connection from the parent telephone to the child telephone when the parent telephone is to be connected with the child telephone using a channel belonging to the assigned group; means for alternately repeating, while the child telephone is on standby, a mode in which the child telephone sequentially receives the channels assigned to the parent telephone and a mode in which the child telephone stops its operation for a predetermined period of time; and means for connecting the child telephone to the parent telephone, when the child telephone receives the request for connection from the parent telephone while the child telephone is on standby, using the channel over which the request for connection is transmitted.

Claim 12

A cordless telephone system for making a connection between a parent telephone and a child telephone where the parent telephone is to be connected with the child telephone for transmission and reception of speech data in a time-sharing manner, and where the connection between the parent telephone and child telephone is be made using one of a plurality of channels, the cordless telephone system comprising: means for dividing the plurality of channels into a plurality of groups; means for assigning one of the groups to the parent telephone; means for sending a request for connection from the parent telephone to the child telephone when the parent telephone is to be connected with the child telephone using a channel belonging to the assigned group; means for alternately repeating, while the child telephone is on standby, a mode in which the child telephone sequentially receives the channels assigned to the parent telephone and a mode in which the child telephone stops its operation for a predetermined period of time; and means for connecting the child telephone to the parent telephone, when the child telephone receives the request for connection from the parent telephone while the child telephone is on standby, using the channel over which the request for connection is transmitted.