Communication circuit and adapter having the same
AssigneesLite-On Technology Corporation, Silitek Electronic (Guangzhou) Co., Ltd.
InventorsTsung-Yuan TSAI, Chien-Chung Hsu
Life of this patent
Estimating the term…
Abstract
A communication circuit and an adapter having the same are provided. The communication circuit includes a coupling circuit and a transceiver module. The coupling circuit is coupled to a DC power line of the adapter to filter a first modulation signal carried on the DC power line or to couple a second modulation signal to the DC power line. The transceiver module is used to receive and demodulate the first modulation signal from the coupling circuit or to output the second modulation signal to the coupling circuit. The adapter is capable of transmitting data and power through the same DC power line.
Claims21
A communication circuit suitable for communications between a notebook computer and an adapter, the communication circuit comprising:
- a coupling circuit coupled to a direct current power line of the adapter for filtering a first modulation signal carried on the direct current power line or coupling a second modulation signal to the direct current power line;
- and
- a transceiver module coupled to the coupling circuit for receiving and demodulating the first modulation signal from the coupling circuit or for outputting the second modulation signal to the coupling circuit.
An adapter suitable for connection to a notebook computer, the adapter comprising:
- a power conversion unit for converting an alternating current power into a direct current power and feeding the converted direct current power to the notebook computer via a direct current power line;
- and
- a communication circuit coupled to the direct current power line for communicating with the notebook computer, the communication circuit comprising:
- a coupling circuit coupled to the direct current power line of the adapter for filtering a first modulation signal carried on the direct current power line or coupling a second modulation signal to the direct current power line;
- and
- a transceiver module coupled to the coupling circuit for receiving and demodulating the first modulation signal or for outputting the second modulation signal to the coupling circuit.
Dependencies are inferred from the claim text.