Patent ID: 7197329

Claim:
A master unit constructing a cordless telephone in association with a slave unit, the master unit and the slave unit transmitting and receiving a speech signal therebetween using a radio wave, the master unit comprising: a display device having a display screen; a storage device that stores data to be displayed on the display screen of; a transfer device that transfers the stored data; a display control device that comprises a memory unit accumulating the transferred data, and that periodically transfers the data accumulated in the memory unit to the display device via a dedicated path to update data displayed on the display screen; and a control device that stops the data transfer to said display control device, in response to start of conversation using the slave unit through a wireless communication between the master unit and the slave unit, wherein said display control device transfers the data accumulated in the memory unit to the display screen via the dedicated path during the conversation using the slave unit to thereby cause the display screen to continue displaying the data.