Lower-power standby mode for consumer electronics
First Claim
1. A conditional access device, comprising:
- a conditional access decryption unit operable to decrypt an incoming signal for use in a consumer electronics device in accordance with at least one previously received entitlement management message;
an interface unit operable to receive a control signal including a message window from a headend control system via a receiver in the consumer electronics device, wherein the message window defines a time interval for expected reception of an entitlement management message;
a timing unit operable to receive the message window from the interface unit, to assert an awake signal responsive to determining that the message window is active representing occurrence of the time interval, and to disable the awake signal responsive to determining that the message window is inactive representing expiration of the time interval; and
a hardware control unit operable to send requests to the consumer electronics device to activate the receiver coupled to the headend control system in expectation of receiving the entitlement management message in response to the assertion of the awake signal, and to deactivate the receiver in response to disablement of the awake signal, the control unit is further operable to communicate the entitlement management message to the conditional access decryption unit.
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Accused Products
Abstract
A conditional access device is provided. The conditional access device typically includes conditional access decryption, interface, timing and control logic. The conditional access decryption logic decrypts an incoming signal for use in a consumer electronics device in accordance with previously received entitlement management messages. The interface logic receives a control signal including an entitlement management message window from a headend control system through a receiver in the consumer electronics device. The timing logic asserts an awake signal responsive to the entitlement management message window becoming active. The control logic sends a request to the consumer electronic device to activate a receiver coupled to the headend control system in expectation of receiving an entitlement management message via the control signal in response to assertion of the awake signal. The control logic also communicates the entitlement management message to the conditional access decryption logic. Other systems and method are also provided.
28 Citations
45 Claims
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1. A conditional access device, comprising:
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a conditional access decryption unit operable to decrypt an incoming signal for use in a consumer electronics device in accordance with at least one previously received entitlement management message; an interface unit operable to receive a control signal including a message window from a headend control system via a receiver in the consumer electronics device, wherein the message window defines a time interval for expected reception of an entitlement management message; a timing unit operable to receive the message window from the interface unit, to assert an awake signal responsive to determining that the message window is active representing occurrence of the time interval, and to disable the awake signal responsive to determining that the message window is inactive representing expiration of the time interval; and a hardware control unit operable to send requests to the consumer electronics device to activate the receiver coupled to the headend control system in expectation of receiving the entitlement management message in response to the assertion of the awake signal, and to deactivate the receiver in response to disablement of the awake signal, the control unit is further operable to communicate the entitlement management message to the conditional access decryption unit. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18)
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19. A method of establishing a determinate period for control messages, the method comprising:
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receiving at a conditional access device notification of a message window from a receiver in a consumer electronics device coupled to a headend control system, wherein the message window defines a time interval for expected reception of an entitlement management message; determining at the conditional access device that the message window is active representing occurrence of the time interval; sending a first interrupt request from the conditional access device to the consumer electronics device to activate the receiver responsive to determining that the message window is active; waiting for the entitlement management message to be received for the duration of the time interval; and sending a second interrupt request from the conditional access device to the consumer electronics device to deactivate the receiver in response to expiration of the time interval. - View Dependent Claims (20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31)
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32. Logic encoded in one or more electronic storage media for execution to determine when a control message is to be received and when executed operable for:
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receiving at a conditional access device a control message window from a receiver in a consumer electronics device coupled to a headend control system, wherein the message window defines a time interval for expected reception of an entitlement management message; determining at the conditional access device when the control message window is active representing occurrence of the time interval; sending a wake request from the conditional access device to the consumer electronics device to activate the receiver responsive to the control message window being active; and sending a sleep request from the conditional access device to the consumer electronics device to deactivate the receiver responsive to the control message window being inactive representing expiration of the time interval. - View Dependent Claims (33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45)
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Specification