US Patent 7660608 Handsfree device

A handsfree device replaces a non-displayable character code in a registration name of each data entry in telephone number data with a space code in the course of reception from a mobile communication device. The registration name entirely replaced with the space code is stored in a memory medium as blank data. The registration name stored as the blank data is distinctively displayed on a display screen by using telephone number in association with the registration name in the telephone number data.