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Title:
COMMUNICATION DEVICE
Document Type and Number:
WIPO Patent Application WO/2021/232950
Kind Code:
A1
Abstract:
A communication device (1), comprising: a master control chip (11), comprising a transmitting end (111); a controlled chip (12), comprising a receiving end (121), the transmitting end (111) and the receiving end (121) being coupled by a differential signal line (13), and the differential signal line (13) comprising a positive end and a negative end; a positive-end state detection unit (122), coupled to the positive end to detect a single-ended signal at the positive end; a negative-end state detection unit (123), coupled to the negative end to detect a single-ended signal at the negative end; and a control unit (126), coupled to the positive-end state detection unit (122), the negative-end state detection unit (123), and the receiving end (121), respectively, and according to a detected signal state combination, waking up the receiving end (121) or making same get to sleep, wherein the signal state combination is a signal state combination of the single-ended signal at the positive end and the single-ended signal at the negative end. Since the opposite end can be waken up or made to get to sleep between the master control chip (11) and the controlled chip (12) without a side band signal or an additional low power consumption circuit, the device costs and the size are reduced, the implementation is simple, and more information can be transmitted by means of the switching of signal states.

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Inventors:
JIN, Wei (Spreadtrum CenterBuilding No.1, Lane 2288, Zuchongzhi Road,Zhangjiang, Pudong New Area, Shanghai 3, CN)
JI, Jin (Spreadtrum CenterBuilding No.1, Lane 2288, Zuchongzhi Road,Zhangjiang, Pudong New Area, Shanghai 3, CN)
Application Number:
PCT/CN2021/084216
Publication Date:
November 25, 2021
Filing Date:
March 31, 2021
Export Citation:
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Assignee:
SPREADTRUM COMMUNICATIONS (SHANGHAI) CO., LTD. (Bldg. No. 12288 Zuchongzhi Road, Shanghai 3, CN)
International Classes:
G06F13/20; H03K19/0175
Attorney, Agent or Firm:
UNITALEN ATTORNEYS AT LAW (Scitech PlaceNo.22, Jian Guo Men Wai Ave., Chao Yang District, Beijing 4, CN)
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