1. A method of capturing images using a camera device including at least a first optical chain including a first sensor and a second optical chain including a second sensor, said first optical chain having a smaller focal length than said second optical chain, the method comprising:
making a decision based on at least one of: i) user input or ii) a determined rate of motion whether to control the second sensor of the second optical chain to perform joint readouts of pixel elements corresponding to consecutive pixel element rows of the second sensor or to perform individual read outs of consecutive rows of pixel elements of said second sensor;
controlling the first sensor to readout pixel values of said first sensor; and
controlling the second sensor to readout pixel values of pixel elements of said second sensor in accordance with the said decision to perform joint readouts of pixel elements corresponding to consecutive pixel element rows of the second sensor or to perform individual read outs of consecutive rows of pixel elements of said second sensor.
2. The method of claim 1, wherein said first focal length is smaller than said second focal length.
3. The method of claim 1, wherein controlling the second sensor to readout pixel values involves controlling the second sensor to readout pixel values in parallel with the readout of at least some pixel values of said first sensor.
4. The method of claim 1, wherein said step of making a decision is based on user input, said user input indicting a high rate of motion mode of operation or a high resolution mode of operation, said step of making a decision is based on user input including:
i) deciding to perform joint readouts of pixel elements corresponding to consecutive pixel element rows of the second sensor when the user input indicates selection of a high rate of motion mode of operation; and
ii) deciding to perform individual read outs of consecutive rows of pixel elements of said second sensor when the user input indicates selection of a high resolution motion mode of operation.
5. The method of claim 3, wherein said step of making a decision is based on a rate of motion, said step of making a decision including:
i) deciding to perform joint readouts of pixel elements corresponding to consecutive pixel element rows of the second sensor when the rate of motion is above a first threshold; and
ii) deciding to perform individual read outs of consecutive rows of pixel elements of said second sensor when the rate of motion is below said first threshold.
6. The method of claim 5, further comprising:
determining said rate of motion from images sequentially captured by an optical chain of said camera device.
7. The method of claim 6, wherein said determining includes determining the rate of motion based on differences between an image captured during a first time period and an image captured during a second time period which follows said first time period.
8. The method of claim 1, further comprising:
controlling a third sensor corresponding to a third optical chain having the same focal length as said second optical chain to perform joint readouts of pixel elements corresponding to consecutive pixel element rows when said decision is a decision to perform joint readouts of pixel elements corresponding to consecutive pixel element rows of the second sensor, said third sensor being controlled to jointly read out at least some rows of pixel values after the readout of said second sensor has been completed but prior to completion of the readout of the first sensor.
9. The method of claim 1, further comprising:
when said decision is a decision to perform joint readouts of pixel elements corresponding to consecutive pixel element rows of the second sensor, controlling the number of rows of pixel elements to be read out in a joint read as a function of the ratio of the first focal length to the second focal length.
10. The method of claim 1, further comprising:
controlling the first sensor to readout pixel values of pixel elements of said first sensor at a rate which is a function of the ratio of the second focal length to the first focal length when said decision is a decision to perform individual read outs of consecutive rows of pixel elements of said second sensor.
11. A camera device comprising:
a first optical chain including a first sensor and having a first focal length;
a second optical chain including a second sensor and having a second focal length, said first focal length being smaller than said second focal length;
a readout control decision module configured to make a readout control decision, based on at least one of: i) user input or ii) a determined rate of motion, whether to control the second sensor of the second optical chain to perform joint readouts of pixel elements corresponding to consecutive pixel element rows of the second sensor or to perform individual read outs of consecutive rows of pixel elements of said second sensor; and
a sensor readout control module configured to:
i) control the first sensor to readout pixel values of said first sensor; and
ii) control the second sensor to readout pixel values of pixel elements of said second sensor in accordance with the said readout control decision.
12. The camera device of claim 11, wherein said first focal length is smaller than said second focal length.
13. The camera device of claim 11, wherein said sensor readout control module controls the second sensor to readout pixel values in parallel with the readout of at least some pixel values of said first sensor, as part of controlling the second sensor to readout pixel values.
14. The camera device of claim 11, further comprising:
a user input interface configured to receive user input indicating an automatic mode of operation, a high rate motion mode of operation or a high resolution mode of operation;
a mode control module configured to set the camera device in a mode of operation in response to received user input; and
wherein said readout control decision module is configured to make said decision based on a rate of motion detected in images captured by said camera device when received user input indicates an automatic mode of operation.
15. The camera device of claim 13, wherein said readout control decision module is configured to
i) decide to perform joint readouts of pixel elements corresponding to consecutive pixel element rows of the second sensor when the rate of motion is above a first threshold; and
ii) decide to perform individual read outs of consecutive rows of pixel elements of said second sensor when the rate of motion is below said first threshold.
16. The camera device of claim 15, further comprising:
a motion rate determination module configured to determine said rate of motion from images sequentially captured by an optical chain of said camera device.
17. The camera device of claim 16, wherein said motion rate determination module determines the rate of motion based on differences between an image captured during a first time period and an image captured during a second time period which follows said first time period.
18. The camera device of claim 11, wherein the sensor readout control module is further configured to:
control a third sensor corresponding to a third optical chain having the same focal length as said second optical chain to perform joint readouts of pixel elements corresponding to consecutive pixel element rows when said decision is a decision to perform joint readouts of pixel elements corresponding to consecutive pixel element rows of the second sensor, said third sensor being controlled to jointly read out at least some rows of pixel values after the readout of said second sensor has been completed but prior to completion of the readout of the first sensor.
19. The camera device of claim 11, further comprising:
a joint readout control module configured to control the number of rows of pixel elements to be read out in a joint read as a function of the ratio of the first focal length to the second focal length when said decision is a decision to perform joint readouts of pixel elements corresponding to consecutive pixel element rows of the second sensor.
20. A non-transitory machine readable medium including processor executable instructions which when executed by a processor of a camera device including at least a first optical chain including a first sensor and a second optical chain including a second sensor, said first optical chain having a smaller focal length than said second optical chain, control the camera device to perform the steps of:
making a decision based on at least one of: i) user input or ii) a determined rate of motion whether to control the second sensor of the second optical chain to perform joint readouts of pixel elements corresponding to consecutive pixel element rows of the second sensor or to perform individual read outs of consecutive rows of pixel elements of said second sensor;
controlling the first sensor to readout pixel values of said first sensor; and
controlling the second sensor to readout pixel values of pixel elements of said second sensor in accordance with the said decision to perform joint readouts of pixel elements corresponding to consecutive pixel element rows of the second sensor or to perform individual read outs of consecutive rows of pixel elements of said second sensor.
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 wireless terminal device that performs wireless communication in any one of a first communication system or a second communication system, the wireless terminal device comprising:
a synchronization unit that establishes synchronization with a base station of the second communication system before location registration is performed in the first communication system to obtain synchronization information for establishing synchronization with the base station of the second communication system;
a storage unit that stores the synchronization information; and
a switching unit that establishes synchronization with the base station of the second communication system in a calling zone of the second communication system corresponding to a calling zone of the first communication system based on the synchronization information, in a case in which a communication request occurs in the second communication system after location registration is performed in the first communication system.
2. The wireless terminal device according to claim 1, wherein the switching unit reports a communication request to the second communication system via the first communication system.
3. The wireless terminal device according to claim 1, wherein the switching unit establishes synchronization with the base station by using channel information of a communication channel in the second communication system reported via the first communication system.
4. The wireless terminal device according to claim 1, wherein the switching unit establishes synchronization with the base station in a calling zone of the second communication system corresponding to a calling zone of the first communication system, based on mapping data of a CS (Circuit Switched) Fallback function maintained in the first communication system and defined in 3GPP (3rd Generation Partnership Project) TS 23.272.
5. A control method for a wireless terminal device that performs wireless communication in any one of a first communication system or a second communication system, the method comprising:
a synchronizing step of establishing synchronization with a base station of the second communication system before location registration is performed in the first communication system to obtain synchronization information for establishing synchronization with the base station of the second communication system;
a storing step of storing the synchronization information; and
a switching step of establishing synchronization with the base station of the second communication system in a calling zone of the second communication system corresponding to a calling zone of the first communication system based on the synchronization information, in a case in which a communication request occurs in the second communication system after location registration is performed in the first communication system.
6. A control system comprising: a wireless terminal device that performs wireless communication with a base station by way of any one of a first communication system or a second communication system; a base station of each of the communication systems; and a control unit that controls wireless communication in the base station of each of the communication systems and
the wireless terminal device including:
a synchronization unit that establishes synchronization with a base station of the second communication system before location registration is performed in the first communication system to obtain synchronization information for establishing synchronization with the base station of the second communication system;
a storage unit that stores the synchronization information; and
a switching unit that establishes synchronization with the base station of the second communication system in a calling zone of the second communication system corresponding to a calling zone of the first communication system based on the synchronization information, in a case in which a communication request occurs in the second communication system after location registration is performed in the first communication system,
wherein a control unit of the first communication system stores mapping data of a CS Fallback function defined in 3GPP TS 23.272, determines a control unit in a calling zone of the second communication system corresponding to a calling zone of the first communication system based on the mapping data, and transmits report data on the communication request from the wireless terminal device to the control unit of the second communication system, or from the control unit of the second communication system to the wireless terminal device.