Cable modem apparatus, broadcasting signal receiving apparatus, broadcasting signal transmitting apparatus and control method thereof
First Claim
Patent Images
1. A cable modem apparatus including:
- a communicator that communicates with a broadcasting signal transmitting apparatus; and
a controller that controls the communicator;
to receive a broadcasting signal from the broadcasting signal transmitting apparatus through a data channel including a plurality of channels assigned to a first frequency band in a normal mode,to transmit a request for changing into a first low-power mode to the broadcasting signal transmitting apparatus in response to an entry into the first low-power mode from the normal mode,to receive a command for switching to a networking channel assigned to a second frequency band that does not overlap with the first frequency band, wherein the second frequency band is adjacent to the first frequency band, and the command is received from the broadcasting signal transmitting apparatus in response to the request received by the broadcasting signal transmitting apparatus,to switch from the data channel to the networking channel based on the command received from the broadcasting signal transmitting apparatus, andto communicate with the broadcasting signal transmitting apparatus through the networking channel in the first low-power mode,wherein the controller controls the communicator to use the networking channel for communicating instead of the data channel for receiving the broadcasting signal in the first low-power mode.
1 Assignment
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Accused Products
Abstract
A cable modem apparatus configured to switch between communicating over a plurality of channels and a channel different from the plurality of channels.
49 Citations
19 Claims
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1. A cable modem apparatus including:
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a communicator that communicates with a broadcasting signal transmitting apparatus; and a controller that controls the communicator; to receive a broadcasting signal from the broadcasting signal transmitting apparatus through a data channel including a plurality of channels assigned to a first frequency band in a normal mode, to transmit a request for changing into a first low-power mode to the broadcasting signal transmitting apparatus in response to an entry into the first low-power mode from the normal mode, to receive a command for switching to a networking channel assigned to a second frequency band that does not overlap with the first frequency band, wherein the second frequency band is adjacent to the first frequency band, and the command is received from the broadcasting signal transmitting apparatus in response to the request received by the broadcasting signal transmitting apparatus, to switch from the data channel to the networking channel based on the command received from the broadcasting signal transmitting apparatus, and to communicate with the broadcasting signal transmitting apparatus through the networking channel in the first low-power mode, wherein the controller controls the communicator to use the networking channel for communicating instead of the data channel for receiving the broadcasting signal in the first low-power mode. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A broadcasting signal receiving apparatus comprising:
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a cable modem apparatus comprising; a communicator that communicates with a broadcasting signal transmitting apparatus; and a controller that controls the communicator; to receive a broadcasting signal from the broadcasting signal transmitting apparatus through a data channel including a plurality of channels assigned to a first frequency band in a normal mode, to transmit a request for changing into a first low-power mode to the broadcasting signal transmitting apparatus in response to an entry into the first low-power mode from the normal mode, to receive a command for switching to a networking channel assigned to a second frequency band that does not overlap with the first frequency band, wherein the second frequency band is adjacent to the first frequency band, and the command is received from the broadcasting signal transmitting apparatus in response to the request received by the broadcasting signal transmitting apparatus, to switch from the data channel to the networking channel based on the command received from the broadcasting signal transmitting apparatus, and to communicate with the broadcasting signal transmitting apparatus through the networking channel in the first low-power mode; a signal processor that processes the broadcasting signal received in the cable modem apparatus and to display an image corresponding to the broadcasting signal as processed, wherein the communicator communicates with a display apparatus, and the controller outputs the broadcasting signal as processed to the display apparatus, and wherein the controller controls the communicator to use the networking channel for communicating instead of the data channel for receiving the broadcasting signal in the first low-power mode.
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10. A broadcasting signal transmitting apparatus comprising:
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a communicator that communicates with a cable modem apparatus and to transmit a broadcasting signal of a predetermined channel to the cable modem apparatus; and a controller that controls the communicator; to transmit the broadcasting signal to the cable modem apparatus through a data channel including a plurality of channels assigned to a first frequency band in a normal mode, to receive a request for changing into a first low-power mode from the cable modem apparatus in response to an entry into the first low-power mode from the normal mode, to switch from the data channel to a networking channel assigned to a second frequency band that does not overlap with the first frequency band, wherein the second frequency band adjacent to the first frequency band, based on the request received from the cable modem apparatus, to transmit, to the cable modem apparatus, a command for switching to the networking channel, and to communicate with the cable modem apparatus through the networking channel in the first low-power mode, wherein the controller controls the communicator to use the networking channel for communicating with the cable modem apparatus instead of the data channel for transmitting the broadcasting signal in the first low-power mode. - View Dependent Claims (11, 12, 13, 14)
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15. A method of controlling a cable modem apparatus, the method comprising:
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receiving, by a communicator of the cable modem apparatus, a broadcasting signal from a broadcasting signal transmitting apparatus through a data channel that is assigned to a first frequency band in a normal mode; transmitting, by the communicator, a request for changing into a first low-power mode to the broadcasting signal transmitting apparatus in response to entry into the first low-power mode from the normal mode; receiving, by the communicator, a command for switching to a networking channel assigned to a second frequency band that does not overlap with the first frequency band, wherein the second frequency band is adjacent to the first frequency band, and the command is received from the broadcasting signal transmitting apparatus in response to the request received by the broadcasting signal transmitting apparatus; switching, by the communicator, from the data channel to the networking channel based on the command received from the broadcasting signal transmitting apparatus; and communicating with the broadcasting signal transmitting apparatus through the networking channel in the first low-power mode, wherein the switching comprises using the networking channel for communicating instead of the data channel for receiving the broadcasting signal in the first low-power mode. - View Dependent Claims (16, 17)
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18. A method of controlling a broadcasting signal transmitting apparatus, the method comprising:
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transmitting, by a communicator of the broadcasting signal transmitting apparatus, a broadcasting signal to a cable modem apparatus through a data channel that is assigned to a first frequency band in a normal mode; receiving, by the communicator, a request for changing into a first low-power mode from the cable modem apparatus in response to an entry into the first low-power mode from the normal mode; switching, by the communicator, from the data channel to a networking channel assigned to a second frequency band that does not overlap with the first frequency band, wherein the second frequency band is adjacent to the first frequency band based on the request received from the cable modem apparatus; transmitting, to the cable modem apparatus, by the communicator, a command for switching to the networking channel; and communicating with the cable modem apparatus through the networking channel in the first low-power mode, wherein the switching comprises using the networking channel for communicating with the cable modem apparatus instead of the data channel for transmitting the broadcasting signal in the first low-power mode. - View Dependent Claims (19)
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Specification