A method and a device used for displaying wideband information to a user has a
return channel made through a cellular mobile terminal (CMT) providing interactivity.
The device (10) has a first antenna (12) and a second antenna (20),
a receiver (14, 16) that is coupled to the first antenna and a transmitter
(24) that is coupled to the second antenna. The method includes, prior to
receiving information in a symbol-wise manner with the receiver in a first band
of radio frequencies, generating a notification of reception with the receiver
by asserting a DVB_RX_ON signal (16A) and, in response to the notification,
requesting a change of transmitter transmission frequencies from a second band
of radio frequencies to a third band of radio frequencies that is predetermined
to avoid interference with the reception of the information in the first band of
radio frequencies. The transmitter is preferably a cellular mobile terminal transmitter,
and the request for a change can be made by initiating a Classmark Change procedure
with a cellular mobile terminal wireless network. In one embodiment the first band
of radio frequencies comprises a DVB-T 470-862 MHz reception band, the second band
of radio frequencies comprises a GSM 880-915 MHz transmission band, and the third
band of radio frequencies comprises a higher GSM band, such as the GSM 1800 MHz
band or the European 3G band. In other embodiments, such as one practiced in the
United States, the CMT call may be rerouted from the CMT 800 MHz band to the CMT
1900 MHz band.
