Uniden Corporation

Yoshihisa Takebe

Yuichi Bannai

Kenji Yamazaki

Hiroyuki Ishida

Fumiya Hirayama

Akira Fukushima

A cordless telephone handset that does not affect the use of a magnetic pick-up type hearing aid. The cordless telephone handset includes a TDD processing section for controlling transmission and reception by means of TDD communications, and a suppressing device for suppressing variations in the magnetic field generated by the TDD processing section. By suppressing variations in the magnetic field generated by the TDD processing section, the problem of magnetic field variations being picked up by a magnetic pick-up type hearing aid and being output as noise, is overcome.

Cordless telephone handset

In an flash memory which is an IC memory, a playback time proportional to a period of time when a rewind key is continuously pressed down, or a playback time proportional to a period of time when the rewind key is continuously pressed down while time-stamp information is played back, and a message is read out and played back from a message address at a destination for playback corresponding to the playback time. With this feature, a message address at a destination for playback can be changed according to a period of playback time corresponding to a period of time when the rewind key is continuously pressed down.

Message playback device and message playback method

Plurality of radio channels include a first radio channel group having channel(s) permitted to be used only when the radio channels are not being used by other device, a second radio channel group available for communication regardless of whether the radio channels are being used by other device, a base unit and/or a handset unit therein comprises a first memory unit for storing radio channels in first and second radio channel groups, a determining unit for determining whether a specified radio channel is busy, a control unit for specifying a radio channel in the first radio channel group prior to start of call and determining whether the radio channel is busy, selecting the radio channel if not busy, and otherwise one radio channel from the second radio channel group.

Growing community of inventors

Tokyo, Japan

Yoshihisa Takebe