Very low cost digital TV module
AssigneeKoninklijke Philips Electronics N.V.
InventorsRichard C. Shen, Sheau B. Ng
Life of this patent
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Abstract
A method and device for adapting an existing analog television receiver to receive and decode both analog and digital television signals. A digital module is provided within the analog television receiver and its output is provided to the picture-in-picture (PIP) interface of an analog module within the receiver. The digital signal then has the benefit of using the picture improvement circuitry located within the analog module and there is no need to modify the analog module which has been in the cost optimization process for years.
Claims20
A method of adapting an existing analog television receiver to receive and decode both analog and digital television signals, the analog television having i) an analog chassis to receive and decode analog television signals, ii) a PIP module to receive, decode and reduce the size of television signals, and iii) a digital module which receives and decodes digital television signals, the analog module having a PIP interface for receipt of a PIP signal from the PIP module, comprising the steps of:
- coupling a first input of a switch to an output of the digital module;
- coupling a second input of the switch to an output of the PIP module;
- and
- coupling an output of the switch to the PIP interface of the analog chassis.
A device for adapting an existing analog television receiver to receive and decode both analog and digital television signals, the analog television having an analog chassis to receive and decode analog television signals and a PIP module to receive and decode television signals to provide a PIP output, the analog chassis having a PIP interface for receipt of a PIP signal from the PIP module, comprising:
- a digital module placed within the analog television receiver and which is capable of receiving and decoding digital television signals, and
- a switch having at least two inputs and an output, one input of the switch being coupled to the output of the digital module, and an output of the switch coupled to the PIP interface of the analog chassis, and the output of the PIP module coupled to a second input of the switch.
A device for adapting an existing analog television receiver to receive and decode both analog and digital television signals, the analog television receiver having an analog chassis to receive and decode analog television signals and a PIP module to receive and decode television signals to provide a PIP output signal comprising:
- a digital module for placement within the analog television receiver and capable of receiving and decoding digital television signals and providing a digital output signal;
- and
- a switch, switchably coupling the PIP output signal and the digital output signal to a PIP input of the analog chassis.
Dependencies are inferred from the claim text.