Control apparatus, control method, cable, electronic apparatus, and communication apparatus with increased variation of connection mode
View Patent ↗The present technology relates to a control apparatus, a control method, a cable, an electronic apparatus, and a communication apparatus that are capable of increasing the variation of a connection mode of an electronic apparatus to which a predetermined cable such as a USB cable can be connected. An electronic apparatus receiving a baseband signal of a baseband to start initialization processing for causing the electronic apparatus to be in a state of being capable of establishing connection or to turn on or off a power source based on detection results of power of a modulation signal obtained by frequency-converting the baseband signal into a signal of a predetermined frequency band higher than the baseband is controlled. The present technology can be applied to a cable connected to an electronic apparatus to which a cable capable of supplying a power source by bus power such as a USB cable.
1. A control apparatus, comprising:
a controller configured to:
control an electronic apparatus to start initialization processing at the electronic apparatus for causing the electronic apparatus to be in a state of being capable of establishing connection, or
to control a power source to turn on or off the power source,
wherein the electronic apparatus receives a baseband signal, and
wherein the control is based on detection results of power of a modulation signal obtained by frequency-converting the baseband signal into a signal of a predetermined frequency band higher than the baseband;
a power detection unit configured to detect the power of the modulation signal; and
a reception unit configured
to receive the modulation signal, and to frequency-convert the modulation signal into the baseband signal, the power detection unit using the baseband signal obtained by frequency-converting the modulation signal to detect the power of the modulation signal.
2. The control apparatus according to claim 1 , wherein the power detection unit detects a DC (Direct Current) offset of the baseband signal as the power of the modulation signal.
3. The control apparatus according to claim 1 , wherein
the reception unit outputs a differential signal being the baseband signal, and
the power detection unit detects a difference between DC (Direct Current) offsets of differential signals as the power of the modulation signal.
4. The control apparatus according to claim 3 , wherein
the electronic apparatus is an electronic apparatus starting the initialization processing in response to turning on of the power source, and
the controller controls the electronic apparatus to start the initialization processing by turning on the power source of the electronic apparatus.
5. The control apparatus according to claim 4 , wherein
the controller turns on the power source of the electronic apparatus in a case where the power of the modulation signal has a value greater than or equal to a first threshold value, and turns off the power source of the electronic apparatus in a case where the power of the modulation signal has a value less than or equal to a second threshold value that is less than the first threshold value.
6. The control apparatus according to claim 3 , wherein
the modulation signal is a signal of extremely high frequency.
7. The control apparatus according to claim 3 , wherein
the electronic apparatus is an electronic apparatus to which a cable capable of supplying a power source by bus power can be connected.
8. A control method, comprising:
receiving a modulation signal obtained by frequency-converting a baseband signal into a signal of a predetermined frequency band higher than the baseband;
frequency-convert the modulation signal into the baseband signal;
controlling an electronic apparatus to:
start initialization processing at the electronic apparatus for causing the electronic apparatus to be in a state of being capable of establishing connection, or
to turn on or off a power source,
wherein the electronic apparatus receives the baseband signal, and
wherein the controlling is based on detection results of power of a modulation signal;
wherein the baseband signal obtained by frequency-converting the modulation signal is used to detect the power of the modulation signal.
9. A cable connected to an electronic apparatus to which a bus power cable capable of supplying a power source by bus power can be connected, the cable comprising:
a reception unit configured
to receive a modulation signal, wherein the modulation signal was obtained by frequency-converting a baseband signal into a signal of a predetermined frequency band higher than the baseband, and
to frequency-convert the modulation signal it-into the baseband signal;
a power detection unit configured to detect power of the modulation signal received by the reception unit; and
a controller configured to control the electronic apparatus receiving the baseband signal to start initialization processing for causing the electronic apparatus to be in a state of being capable of establishing connection or to turn on or off a power source based on detection results of the power of the modulation signal in the power detection unit.
10. An electronic apparatus to which a bus power cable capable of supplying a power source by bus power can be connected, the electronic apparatus comprising:
a reception unit configured
to receive a modulation signal, wherein the modulation signal was obtained by frequency-converting a baseband signal into a signal of a predetermined frequency band higher than the baseband, and
to frequency-convert the modulation signal into the baseband signal;
a power detection unit configured to detect power of the modulation signal received by the reception unit, wherein the power detection unit uses the baseband signal obtained from the reception unit to detect the power of the modulation signal; and
a controller configured to control the electronic apparatus receiving the baseband signal to start initialization processing for causing the electronic apparatus to be in a state of being capable of establishing connection or to turn on or off a power source based on detection results of the power of the modulation signal in the power detection unit.
11. A communication apparatus, comprising:
a transmission unit configured to transmit a modulation signal, wherein the modulation signal is obtained by frequency-converting a baseband signal into a signal of a predetermined frequency band higher than the baseband, to an apparatus configured
to receive the modulation signal,
to frequency-convert the modulation signal into the baseband signal,
to detect power of the modulation signal, and
to control an electronic apparatus receiving the baseband signal to start initialization processing for causing the electronic apparatus to be in a state of being capable of establishing connection, or to control a power source to turn on or off the power source, wherein the control is based on detection results of the power of the modulation signal; and
a controller configured to control on and off of transmission of the modulation signal,
wherein the baseband signal obtained by frequency-converting the modulation signal is used to detect the power of the modulation signal.
12. The communication apparatus according to claim 11 , wherein
the controller turns on or off the transmission of the modulation signal with a predetermined event as a trigger.
13. The communication apparatus according to claim 12 , wherein
when the controller turns off the transmission of the modulation signal then a signal is not transmitted from the apparatus as a trigger.
14. The communication apparatus according to claim 12 , wherein
the controller turns on or off the transmission of the modulation signal with a user's operation as a trigger.
15. The communication apparatus according to claim 12 , wherein
the controller turns off the transmission of the modulation signal with that there is no data to be transmitted to the apparatus and that there is no data to be received from the different transmission apparatus as a trigger.
16. The communication apparatus according to claim 13 , wherein
the modulation signal is a signal of extremely high frequency.
17. The communication apparatus according to claim 13 , wherein
the electronic apparatus is an electronic apparatus to which a cable capable of supplying a power source by bus power can be connected.
18. A control method, comprising:
controlling on and off of transmission of a modulation signal, wherein the modulation signal is obtained by frequency-converting a baseband signal into a signal of a predetermined frequency band higher than the baseband, to an apparatus configured
to control an electronic apparatus, the electronic apparatus being configured
to receive the modulation signal,
to frequency-convert the modulation signal into the baseband signal,
to detect power of the modulation signal, and
to control the electronic apparatus receiving the baseband signal to start initialization processing for causing the electronic apparatus to be in a state of being capable of establishing connection or to control a power source to turn on or off the power source based on detection results of the power of the modulation signal, wherein the baseband signal obtained by frequency-converting the modulation signal is used to detect the power of the modulation signal.