Changing mode in digital broadcast receiver
First Claim
1. A method of changing modes in a digital broadcast receiver, the method comprising:
- channel searching to change a first mode into a second mode, and detecting a cause of a failure in securing a channel via a database upon failing to secure the channel in response to a user requesting a change of the second mode via a host; and
recovering the second mode in response to detecting the cause of failure in securing a channel upon receiving Data over Cable Service Interface Specifications (DOCSIS) set-top box gateway data.
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Accused Products
Abstract
A method of changing between a Data over Cable Service Interface Specifications (DOCSIS) mode and a DOCSIS Set-top box Gateway (DSG) mode in a digital broadcast receiver, includes: performing channel searching to change into the DSG mode, and detecting a cause of a failure in securing a channel via a database upon failing to secure the channel in response to a user requesting a change of mode via a host; and recovering the DSG mode as a result of detecting the failure cause upon receiving DSG data. It is therefore possible to change from the DOCSIS mode to the DSG mode according to the state of the OpenCable digital broadcast receiver, thereby improving its capability of coping with a field.
5 Citations
15 Claims
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1. A method of changing modes in a digital broadcast receiver, the method comprising:
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channel searching to change a first mode into a second mode, and detecting a cause of a failure in securing a channel via a database upon failing to secure the channel in response to a user requesting a change of the second mode via a host; and recovering the second mode in response to detecting the cause of failure in securing a channel upon receiving Data over Cable Service Interface Specifications (DOCSIS) set-top box gateway data.
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2. A method of changing modes in a digital broadcast receiver, the method comprising:
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channel searching to change from a Data over Cable Service Interface Specifications (DOCSIS) mode into a DOCSIS Set-top box Gateway (DSG) mode, and detecting a cause of a failure in securing a channel via a database upon failing to secure the channel in response to a user requesting a change of mode via a host; and recovering the DSG mode as a result of detecting the failure in securing a channel upon receiving DSG data. - View Dependent Claims (3, 4, 5, 6, 7, 8)
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9. A digital broadcast receiver in an OpenCable digital broadcast system, the digital broadcast receiver comprising:
a cable modem searching upstream and downstream channels of a Cable Modem Termination System (CMTS) upon a user requesting a change of mode via a host, and determining whether to receive Data over Cable Service Interface Specifications (DOCSIS) set-top box gateway data in a first mode to change into one of first and second modes according to whether or not securing the channels has succeeded.
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10. A digital broadcast receiver in an OpenCable digital broadcast system, the digital broadcast receiver comprising:
a cable modem searching upstream and downstream channels of a Cable Modem Termination System (CMTS) upon a user requesting a change of a Data over Cable Service Interface Specifications (DOCSIS) Set-top box Gateway (DSG) mode via a host, and determining whether to receive DSG data in a DOCSIS mode to change into one of DSG and DOCSIS modes according to whether or not securing the channels has succeeded. - View Dependent Claims (11, 12, 13, 14)
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15. An OpenCable digital broadcast system, comprising:
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a Cable Modem Termination System (CMTS) receiving Data over Cable Service Interface Specifications (DOCSIS) Set-top box Gateway (DSG) data from one of a service information server and a conditional access server and to transmitting the DSG data; a cable modem determining, upon failing to secure a channel of the CMTS, whether or not the DSG data has been received and performing a DOCSIS mode only upon the DSG data not being received, and performing a DSG mode upon the DSG data being received after failing to secure the channel of the CMTS; and multiple DSG channels each having a broadcast head end receiving, creating and re-transmitting programs from a digital broadcast server via a network in the DSG mode.
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Specification