TUNER MODULE, AND MOBILE COMMUNICATION TERMINAL
First Claim
1. A tuner module which transmits/receives a signal for mobile communication through a transmitting/receiving antenna, and receives a signal of a digital television broadcast through a reception antenna or the reception antenna and the transmitting/receiving antenna, the module comprising:
- a first high frequency switch which has a first contact point to which a transmitting/receiving RF signal for the mobile communication is supplied, a second contact point to which a reception RF signal of the digital television broadcast is supplied, and a common contact point to which one of the first contact point and the second contact point is selectively connected and which is connected to a first transmitting/receiving antenna;
a second high frequency switch which has a first contact point to which a transmitting/receiving RF signal for the mobile communication is supplied, a second contact point to which a reception RF signal of the digital television broadcast is supplied, and a common contact point to which one of the first contact point and the second contact point is selectively connected and which is connected to a second transmitting/receiving antenna;
a first digital broadcast RF reception unit which receives a reception RF signal of the digital television broadcast supplied from the second contact point in the first high frequency switch, and converts the reception RF signal into a reception IF signal;
a second digital broadcast RF reception unit which receives a reception RF signal of the digital television broadcast supplied from the second contact point in the second high frequency switch, and converts the reception RF signal into a reception IF signal;
a third digital broadcast RF reception unit which receives a reception RF signal of the digital television broadcast supplied from a first reception antenna, and converts the reception RF signal into a reception IF signal;
a fourth digital broadcast RF reception unit which receives a reception RF signal of the digital television broadcast supplied from a second reception antenna, and converts the reception RF signal into a reception IF signal; and
a digital broadcast demodulating unit which receives the reception IF signals obtained by conversion by any of the first to fourth digital broadcast RF reception units, performs diversity combining on the signals, demodulates and externally outputs the signals.
1 Assignment
0 Petitions
Accused Products
Abstract
Provided is an LTE-system mobile communication terminal in which a reduction in terminal size and a reduction in the number of components is desired when a terrestrial digital television broadcast is to be received. Two antennas from among terrestrial digital television broadcast receiving antennas are switched and controlled so as to also be used as transmitting/receiving antennas from LTE communication, and the reception diversity is switched to either a 2-system combination or 4-system combination in accordance with whether the television broadcast is in the VHF band or UHF band. As a result, the number of antennas for example can be reduced and the terminal costs and size can be reduced.
17 Citations
21 Claims
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1. A tuner module which transmits/receives a signal for mobile communication through a transmitting/receiving antenna, and receives a signal of a digital television broadcast through a reception antenna or the reception antenna and the transmitting/receiving antenna, the module comprising:
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a first high frequency switch which has a first contact point to which a transmitting/receiving RF signal for the mobile communication is supplied, a second contact point to which a reception RF signal of the digital television broadcast is supplied, and a common contact point to which one of the first contact point and the second contact point is selectively connected and which is connected to a first transmitting/receiving antenna; a second high frequency switch which has a first contact point to which a transmitting/receiving RF signal for the mobile communication is supplied, a second contact point to which a reception RF signal of the digital television broadcast is supplied, and a common contact point to which one of the first contact point and the second contact point is selectively connected and which is connected to a second transmitting/receiving antenna; a first digital broadcast RF reception unit which receives a reception RF signal of the digital television broadcast supplied from the second contact point in the first high frequency switch, and converts the reception RF signal into a reception IF signal; a second digital broadcast RF reception unit which receives a reception RF signal of the digital television broadcast supplied from the second contact point in the second high frequency switch, and converts the reception RF signal into a reception IF signal; a third digital broadcast RF reception unit which receives a reception RF signal of the digital television broadcast supplied from a first reception antenna, and converts the reception RF signal into a reception IF signal; a fourth digital broadcast RF reception unit which receives a reception RF signal of the digital television broadcast supplied from a second reception antenna, and converts the reception RF signal into a reception IF signal; and a digital broadcast demodulating unit which receives the reception IF signals obtained by conversion by any of the first to fourth digital broadcast RF reception units, performs diversity combining on the signals, demodulates and externally outputs the signals. - View Dependent Claims (2, 4, 5, 6, 7, 8, 9, 10, 18, 19)
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3. A mobile communication terminal which transmits/receives a signal for mobile communication through a transmitting/receiving antenna, and receives a signal of a digital television broadcast through a reception antenna or the reception antenna and a transmitting/receiving antenna, the terminal comprising:
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a first transmitting/receiving antenna which transmits/receives a signal for the mobile communication, and receives a signal of the digital television broadcast; a second transmitting/receiving antenna which transmits/receives a signal for the mobile communication, and receives a signal of the digital television broadcast; a first reception antenna which receives a signal of the digital television broadcast; a second reception antenna which receives a signal of the digital television broadcast; a first high frequency switch which has a first contact point to which a transmitting/receiving RF signal for the mobile communication is supplied, a second contact point to which a reception RF signal of the digital television broadcast is supplied, and a common contact point to which one of the first contact point and the second contact point is selectively connected and which is connected to the first transmitting/receiving antenna; a second high frequency switch which has a first contact point to which a transmitting/receiving RF signal for the mobile communication is supplied, a second contact point to which a reception RF signal of the digital television broadcast is supplied, and a common contact point to which one of the first contact point and the second contact point is selectively connected and which is connected to the second transmitting/receiving antenna; a mobile communication transmitting/receiving unit which generates the transmission RF signal for the mobile communication and supplies it to the first contact point in the first high frequency switch, processes a reception RF signal for the mobile communication supplied from the first contact point in the first high frequency switch, processes the reception RF signal for the mobile communication supplied from the first contact point in the second high frequency switch, and performs diversity combining on and demodulating the signal; a first digital broadcast RF reception unit which receives a reception RF signal of the digital television broadcast supplied from the second contact point in the first high frequency switch, and converts the reception RF signal into a reception IF signal; a second digital broadcast RF reception unit which receives a reception RF signal of the digital television broadcast supplied from the second contact point in the second high frequency switch, and converts the reception RF signal into a reception IF signal; a third digital broadcast RF reception unit which receives a reception RF signal of the digital television broadcast from the first reception antenna, and converts the reception RF signal into a reception IF signal; a fourth digital broadcast RF reception unit which receives a reception RF signal of the digital television broadcast from the second reception antenna, and converts the reception RF signal into a reception IF signal; a digital broadcast demodulating unit which receives the reception IF signals obtained by conversion by any of the first to fourth digital broadcast RF reception units, and performs diversity combining on and demodulating the signals; and a control unit which controls an operation of the mobile communication terminal, the control unit controlling the first high frequency switch and the second high frequency switch to connect the common contact point in each of the first high frequency switch and the second high frequency switch to the first contact point when mobile communication is to be performed, and to connect the common contact point to the second contact point when the digital television broadcast is to be received. - View Dependent Claims (11, 12, 13, 14, 15, 16, 17, 20, 21)
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Specification