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US 7,607,155 B2Granted
Verifying 22 kHz tone operation in a set-top box
AssigneeThomson Licensing
InventorBrian David Bajgrowicz
Life of this patent
Estimating the term…
Abstract
A set top box (100) arrangement includes transmitting circuitry (104) for transmitting a message and an emulated reply to the message, and receiver circuitry (105) for receiving the control message and comparing the control message to the emulated reply to the message. The transmitted message and emulated reply message are each a digital satellite equipment control message. The emulated reply message that was received is compared with the reply that was transmitted to verify 22 kHz tone operation of a low noise block downconverter power supply.
Claims3
A set top box arrangement comprising:
- transmitting circuitry for transmitting a message and an emulated expected reply comprising a reply that would be expected in response to the message transmitted;
- and receiver circuitry for receiving the message and comparing the received message to the emulated expected reply;
- a low noise block LNB downconverter power supply operating with a 22 kHz tone;
- wherein at least said message transmitted and the emulated expected reply are each a digital satellite equipment control message for verifying operation of the 22 kHz tone operation of the LNB power supply.
1 more element
A set top box arrangement comprising:
- transmitting circuitry for transmitting a message;
- an input terminal controlled for emulating a reply that would be expected in response to the message transmitted;
- circuitry for receiving a message;
- and circuitry for comparing the emulated expected reply with the message received
- wherein at least the message transmitted and emulated expected reply are each a 22 kHz digital satellite equipment control message.
2 more elements
Dependencies are inferred from the claim text.