Portable communication terminal, communication method of the portable communication terminal, program, and recording medium having the program recorded thereon

A portable communication terminal comprising:

• communication control means for controlling communication of said portable communication terminal with a unit external thereto;
• data processing control means for performing communication with said communication control means;
• and
• first clock signal supply means for supplying a first clock signal to said data processing control means,
• wherein said data processing control means includes a second clock signal supply means for supplying a second clock signal based on said first clock signal to said communication control means,
• wherein said communication control means is shifted from a sleep state to an awake state using a reference timing of receiving a signal from said data processing control means, and
• wherein said communication control means is shifted from the sleep state to the awake state after receiving the signal from said data processing control means and upon receiving a signal of a predetermined magnitude.

A communication method for use with a portable communication terminal, said portable communication terminal performing communication with an other unit external thereto and including communication control means for controlling the communication with the other unit and data processing control means for performing communication with said communication control means, said communication method comprising:

• a first clock signal supply step of supplying a first clock signal to said data processing control means;
• a second clock signal supply step of supplying a second clock signal based on said first clock signal from said data processing control means to said communication control means, and
• a step of shifting said data processing control means from a sleep state to an awake state using a reference timing of receiving a signal from said communication control means,
• wherein said data processing control means is shifted from the sleep state to the awake state after receiving the signal from said communication control means and upon receiving a signal of a predetermined magnitude.

A program for a computer to perform communication processing of a portable communication terminal, said portable communication terminal performing communication with an other unit external thereto and including communication control means for controlling the communication with the other unit and data processing control means for performing communication with said communication control means, said program comprising:

• a first clock signal supply step of supplying a first clock signal to said data processing control means;
• a second clock signal supply step of supplying a second clock signal based on said first clock signal from said data processing control means to said communication control means;
• and
• a step of shifting said data processing control means from a sleep state to an awake state using a reference timing of receiving a signal from said communication control means,
• wherein said data processing control means is shifted from the sleep state to the awake state after receiving the signal from said communication control means and upon receiving a signal of a predetermined magnitude.

A computer readable recording medium having a program recorded thereon, said program being for a computer to perform communication processing of a portable communication terminal, said portable communication terminal performing communication with an other unit external thereto and including communication control means for controlling the communication with the other unit and data processing control means for performing communication with said communication control means, said program including:

• a first clock signal supply step of supplying a first clock signal to said data processing control means;
• a second clock signal supply step of supplying a second clock signal based on said first clock signal from said data processing control means to said communication control means;
• and
• wherein said data processing control means is shifted from a sleep state to an awake state using a reference timing of receiving a signal from said communication control means,
• a step of shifting said data processing control means from the sleep state to the awake state after receiving the signal from said communication control means and upon receiving a signal of a predetermined magnitude.