1. A mobile terminal comprising:
an application processor configured to activate each of a plurality of applications in one of a first mode and a second mode, wherein each of the first mode and the second mode includes two or more screens, corresponding to the plurality of applications, to display information and selectable functions for each of the plurality of applications that is activated, at least one of an amount of information displayed and a number of functions selectable on each of two or more first screens in the first mode is larger than that on each of a corresponding two or more second screens in the second mode, and each one of the two or more first screens in the first mode corresponds to one of the two or more second screens in the second mode;
a mode selection unit configured to input a mode switching instruction; and
a transition control unit configured to control the application processor to switch from activating one application in one of the first mode and the second mode to the other of the first mode and the second mode in accordance with the mode switching instruction input by the mode selection unit so that:
a direct transition occurs between two of the two or more first screens in the first mode of the one application and the corresponding two of the two or more second screens in the second mode of the one application; or
a direct transition occurs between two of the two or more second screens in the second mode of the one application and the corresponding two of the two or more first screens in the first mode of the one application.
2. The mobile terminal according to claim 1, further comprising a setting unit configured to set one of the first mode and the second mode as a basic mode, wherein the application processor activates each of the plurality of applications in said one of the first mode and the second mode set by the setting unit as the basic mode.
3. The mobile terminal according to claim 1, further comprising:
a history memory configured to store an order in which applications were activated and respective corresponding modes in which the applications were activated, sequentially; and
a management unit configured to activate the applications in a reverse order with respect to the order stored in the history memory.
4. The mobile terminal according to claim 1, wherein the application processor activates each of the plurality of applications in a basic mode in response to an interruption, and wherein one of the first mode and the second mode is set as the basic mode.
5. The mobile terminal according to claim 1, wherein each of the second screens in the second mode displays information on a larger scale than each of the corresponding first screens in the first mode.
6. The mobile terminal according to claim 1, wherein the two or more first screens, and the corresponding two or more second screens, are arranged with hierarchical levels.
7. The mobile terminal according to claim 6, wherein the two or more first screens, and the corresponding two or more second screens, include hierarchical menus.
8. A method of operating a mobile terminal including an application processor, a mode selection unit, and a transition control unit, the method comprising:
activating, by the application processor, each of a plurality of applications in one of a first mode and a second mode, wherein each of the first mode and the second mode includes two or more screens, corresponding to the plurality of applications, to display information and selectable functions for each of the plurality of applications that is activated, at least one of an amount of information displayed and a number of functions selectable on each of two or more first screens in the first mode is larger than that on each of corresponding two or more second screens in the second mode, and each one of the two or more first screens in the first mode corresponds to one of the two or more second screens in the second mode;
inputting, by the mode selection unit, a mode switching instruction; and
switching, by the transition control unit, activation of one application in one of the first mode and the second mode to the other of the first mode and the second mode in accordance with the mode switching instruction input by the mode selection unit so that:
a direct transition occurs between two of the two or more first screens in the first mode of the one application and the corresponding two of the two or more second screens in the second mode of the one application; or
a direct transition occurs between two of the two or more second screens in the second mode of the one application and the corresponding two of the two or more first screens in the first mode of the one application.
9. The method according to claim 8, further comprising:
setting one of the first mode and the second mode as a basic mode; and
activating each of the plurality of applications in said one of the first mode and the second mode set as the basic mode.
10. The method according to claim 8, further comprising:
storing an order in which applications were activated and respective corresponding modes in which the applications were activated, sequentially, in a history memory; and
activating the applications in a reverse order with respect to the order stored in the history memory.
11. The method according to claim 8, further comprising:
activating each of the plurality of applications in a basic mode in response to an interruption, wherein one of the first mode and the second mode is set as the basic mode.
12. The method according to claim 8, wherein each of the second screens in the second mode displays information on a larger scale than each of the corresponding first screens in the first mode.
13. The method according to claim 8, wherein the two or more first screens, and the corresponding two or more second screens, are arranged with hierarchical levels.
14. The method according to claim 13, wherein the two or more first screens, and the corresponding two or more second screens, include hierarchical menus.
15. A mobile terminal comprising:
an application processor configured to activate each of a plurality of applications in one of a first mode and a second mode, wherein each of the first mode and the second mode includes a plurality of screens, corresponding to the plurality of applications, to display information and selectable functions for each of the plurality of applications that is activated, and at least one of an amount of information displayed and a number of functions selectable on each of first screens in the first mode is larger than that on each of corresponding second screens in the second mode;
a mode selection unit configured to input a mode switching instruction; and
a transition control unit configured to control the application processor to switch from activating one application in one of the first mode and the second mode to the other of the first mode and the second mode in accordance with the mode switching instruction input by the mode selection unit so that a direct transition occurs between one of the first screens in the first mode of the one application and a corresponding one of the second screens in the second mode of the one application,
wherein the transition control unit controls the application processor to switch from activating a first application in one of the first and second modes to a second application different from the first application while continuing the one of the first and second modes in response to an application switch instruction.
16. A method of operating a mobile terminal including an application processor, a mode selection unit, and a transition control unit, the method comprising:
activating, by the application processor, each of a plurality of applications in one of a first mode and a second mode, wherein each of the first mode and the second mode includes a plurality of screens, corresponding to the plurality of applications, to display information and selectable functions for each of the plurality of applications that is activated, and at least one of an amount of information displayed and a number of functions selectable on each of first screens in the first mode is larger than that on each of corresponding second screens in the second mode;
inputting, by the mode selection unit, a mode switching instruction; and
switching, by the transition control unit, activation of one application in one of the first mode and the second mode to the other of the first mode and the second mode in accordance with the mode switching instruction input by the mode selection unit so that a direct transition occurs between one of the first screens in the first mode of the one application and a corresponding one of the second screens in the second mode of the one application,
wherein the switching controls the application processor to switch from activating a first application in one of the first and second modes to a second application different from the first application while continuing the one of the first and second modes in response to an application switch instruction.
The claims below are in addition to those above.
All refrences to claim(s) which appear below refer to the numbering after this setence.
1. A method of direct digitization for signals of a plurality of radio frequency (RE) signal bands, used in a receiver, said method comprising steps of:
receiving signals of the Global Navigation Satellite System (GNSS) or wireless communication bands with the receiver;
selecting a specific one of the bands with the receiver;
shifting the specific band to a predetermined target frequency band with the receiver;
calculating a sampling frequency for the shifted band and other bands not shifted; and
performing digitization to the signals of the shifted band and other bands not shifted with the calculated sampling frequency using the receiver.
2. The method of claim 1, wherein the specific band has an original central frequency, and the specific band is shifted to the target frequency band with a new central frequency.
3. The method of claim 1, wherein the target frequency band for the specific band to be shifted to is predetermined so that IF (intermediate frequency) bandwidths down convened from the RE signal bands will not overlap with each other after being performed with digitization.
4. The method of claim 1, the target frequency band for the specific band to be shifted to is predetermined so as to minimize the calculated sampling frequency.
5. The method of claim 1, wherein the number and members of the RE signal bands are determined as desired.
6. The method of claim 1, wherein there is more than one band to be frequency shifted, and the steps of selecting and shifting are repeated for each band to be shifted before the calculating step.
7. The method of claim 1, further comprising performing IF wipe-off operation to process the digitized signals into baseband signals.
8. A receiver for receiving signals of a plurality of RF signal bands, said receiver comprising:
a frequency shifting band pass filter (BPF) block separately shifting signals of specific ones of the RF signal bands to target frequency bands, respectively;
a direct BPF block allowing signals of bands not to be shifted to pass, respectively; and
an analog-to-digital converter performing digitization to the signals of the shifted and non-shifted bands with a sampling frequency calculated based on the shifted and non-shifted bands to down convert the signals.
9. The receiver of claim 8, wherein each specific band has an original central frequency, and the specific band is shifted to the target frequency band with a new central frequency.
10. The receiver of claim 8, wherein the target frequency band for the specific band to be shifted to is predetermined so that IF bandwidths down converted from the RE signal bands will not overlap with each other after digitization.
11. The receiver of claim 8, the target frequency band for the specific band to be shifted to is predetermined so as to minimize the calculated sampling frequency.
12. The receiver of claim 8, wherein the number and members of the RE signal bands are determined as desired.
13. The receiver of claim 8, further comprising an IF wipe-off block for processing the digitized signals into baseband signals.
14. The receiver of claim 8, wherein the frequency shifting block comprising a set of band pass filters allowing one specific band to pass and a mixer for shifting said specific band to the target frequency band thereof.