Wireless Terminal Device
First Claim
1. A wireless terminal device for (i) receiving a first radio signal relating to a first service which is a broadcasting service, and a second radio signal relating to a second service, the first radio signal representing a plurality of time-division multiplexed programs as well as periods during which the respective programs are represented, and (ii) performing reproduction of one of the programs selected by a user, and predetermined processing based on the second radio signal, the wireless terminal device comprising:
- a tuner unit operable to generate a first baseband signal and a second baseband signal one at a time according to a switching signal, the first baseband signal being generated by frequency converting the received first radio signal and the second baseband signal being generated by frequency converting the received second radio signal;
a first baseband unit operable to demodulate the first baseband signal to a first data signal;
a second baseband unit operable to demodulate the second baseband signal to a second data signal; and
a switching unit operable to identify, with reference to the first data signal, a period during which the first radio signal representing the selected program is received, and control the tuner unit by outputting thereto the switching signal indicating a first period that includes the identified period, so that the tuner unit generates the first baseband signal during the first period and the second baseband signal during a second period that is a period other than the first period, whereinthe wireless terminal device reproduces the selected program from the first data signal, and conducts the predetermined processing using the second data signal.
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Accused Products
Abstract
A first switching circuit (21) outputs a first radio signal representing a plurality of time-division multiplexed pro-grams and a second radio signal other than the first radio signal, one at a time according to a switching signal. A voltage control oscillator (27) outputs a local signal at a frequency suitable for whichever signal outputted. Using the local signal generated, a frequency converter (24) frequency converts the first and second radio signals to first and second baseband signals, respectively. Via a second switching circuit (31), a first baseband unit (40) and a second baseband unit (50) are supplied with the first and second baseband signals, respectively, and demodulate them to first and second data signals. A switching unit (60) supplies the switching signal indicating periods during which the first radio signal represents a user-selected program, to a tuner unit (20) where the first and second radio signals are processed by time-sharing.
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Citations
17 Claims
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1. A wireless terminal device for (i) receiving a first radio signal relating to a first service which is a broadcasting service, and a second radio signal relating to a second service, the first radio signal representing a plurality of time-division multiplexed programs as well as periods during which the respective programs are represented, and (ii) performing reproduction of one of the programs selected by a user, and predetermined processing based on the second radio signal, the wireless terminal device comprising:
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a tuner unit operable to generate a first baseband signal and a second baseband signal one at a time according to a switching signal, the first baseband signal being generated by frequency converting the received first radio signal and the second baseband signal being generated by frequency converting the received second radio signal; a first baseband unit operable to demodulate the first baseband signal to a first data signal; a second baseband unit operable to demodulate the second baseband signal to a second data signal; and a switching unit operable to identify, with reference to the first data signal, a period during which the first radio signal representing the selected program is received, and control the tuner unit by outputting thereto the switching signal indicating a first period that includes the identified period, so that the tuner unit generates the first baseband signal during the first period and the second baseband signal during a second period that is a period other than the first period, wherein the wireless terminal device reproduces the selected program from the first data signal, and conducts the predetermined processing using the second data signal. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14)
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15. A single-chip IC or an IC chip set for use in a wireless terminal device, the wireless terminal device (i) receiving a first radio signal relating to a first service which is a broadcasting service, and a second radio signal relating to a second service, the first radio signal representing a plurality of time-division multiplexed programs as well as periods during which the respective programs are represented, and (ii) performing reproduction of one of the programs selected by a user, and predetermined processing based on the second radio signal, the single-chip IC or the IC chip set comprising:
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a reception signal obtaining terminal operable to obtain the first and second radio signals received; a tuner circuit operable to generate a first baseband signal and a second baseband signal one at a time according to a switching signal, the first baseband signal being generated by frequency converting the obtained first radio signal and the second baseband signal being generated by frequency converting the obtained second radio signal; a first baseband circuit operable to demodulate the first baseband signal to a first data signal; a second baseband circuit operable to demodulate the second baseband signal to a second data signal; a program selection signal obtaining terminal operable to obtain a signal indicating the selected program; a switching circuit operable to identify, with reference to the first data signal, a period during which the first radio signal representing the selected program is received, and control the tuner circuit by outputting thereto the switching signal indicating a first period that includes the identified period, so that the tuner circuit generates the first baseband signal during the first period and the second baseband signal during a second period that is a period other than the first period; and an output terminal operable to output the first and second data signals. - View Dependent Claims (16, 17)
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Specification