# US 10,484,546 B1 · Doorbell conversion device and doorbell assembly > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 10,484,546 B1 - Document ID: US10484546B1 - Status: Granted - Kind: B1 - Application number: 16/229,861 - Filed: 2018-12-21 - Granted: 2019-11-19 - Earliest claimed: 2018-07-13 - Assignees: Chicony Electronics Co., Ltd. - Applicants: Chicony Electronics Co., Ltd. - Inventors: Wen-Chang Lin - Web page: https://patentgrep.com/patent/US10484546B1 ## CPC - G10K 1/064: Operating or striking mechanisms therefor - H04M 11/02: with bell or annunciator systems - G06F 1/26: Power supply means, e.g. regulation thereof (for memories G11C) - G10K 1/063: the sounding member being a bell - H04M 11/025: {Door telephones (adapted for television H04N7/186)} - G10K: SOUND-PRODUCING DEVICES; METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING, NOISE OR OTHER ACOUSTIC WAVES IN GENERAL; ACOUSTICS NOT OTHERWISE PROVIDED FOR - H04M: TELEPHONIC COMMUNICATION (circuits for controlling other apparatus via a telephone cable and not involving telephone switching apparatus G08) - G06F: ELECTRIC DIGITAL DATA PROCESSING (computer systems based on specific computational models G06N) ## Abstract A doorbell conversion device includes a power input terminal, a power output terminal, two doorbell trigger terminals, a power conversion unit, and a trigger signal unit. The power conversion unit is coupled between the power input terminal and the power output terminal for generating a sensing signal in response to an electric potential of the power output terminal. While the electric potential of the power output terminal is grounded, the power input terminal and the power output terminal are disconnected. In contrast, the power input terminal and the power output terminal are connected. The trigger signal unit is coupled between the power conversion unit and the two doorbell trigger terminals for controlling the two doorbell trigger terminals to be opened or shorted based upon the sensing signal. While the electric potential of the power output terminal is grounded, the two doorbell trigger terminals are shorted. In contrast, they are opened. ## Claims ### Claim 1 A doorbell conversion device, comprising: a power input terminal for receiving an input power; a power output terminal; two doorbell trigger terminals; a power conversion unit coupled between the power input terminal and the power output terminal for generating a sensing signal in response to an electric potential of the power output terminal, wherein while the electric potential of the power output terminal is grounded, the power input terminal and the power output terminal are disconnected; wherein while the electric potential of the power output terminal is not grounded, the power input terminal and the power output terminal are connected to have the power output terminal output an output power based upon the input power; and a trigger signal unit coupled between the power conversion unit and the two doorbell trigger terminals for controlling the two doorbell trigger terminals to be opened or shorted based upon the sensing signal, wherein while the electric potential of the power output terminal is grounded, the two doorbell trigger terminals are shorted; wherein while the electric potential of the power output terminal is not grounded, the two doorbell trigger terminals are opened. ### Claim 2 (depends on 1) The doorbell conversion device of claim 1, wherein the power conversion unit comprises: a voltage dividing circuit coupled to the power output terminal for generating a control signal based upon a dividing of the electric potential of the power output terminal; and a first switch coupled between the power input terminal and the power output terminal, the first switch comprising a control electrode, the control electrode being coupled to the voltage dividing circuit for having the first switch connected or disconnected based upon the control signal. ### Claim 3 (depends on 2) The doorbell conversion device of claim 2, further comprising a second switch comprising a first terminal, a second terminal, and a control terminal, wherein the control terminal is coupled to the voltage dividing circuit, the first terminal is coupled to the control electrode of the first switch, and the second terminal is grounded, wherein the first switch is a P-type transistor, and while the electric potential of the power output terminal is not grounded, the second switch is connected to have the control electrode of the first switch grounded and the first switch connected. ### Claim 4 (depends on 2) The doorbell conversion device of claim 2, wherein the power conversion unit further comprises a bypass circuit coupled to two terminals of the first switch for transmitting the sensing signal, the trigger signal unit comprises an isolation coupling component, the isolation coupling component comprises a primary side and a secondary side, the primary side receives the sensing signal, and the secondary side is coupled to the two doorbell trigger terminals. ### Claim 5 (depends on 4) The doorbell conversion device of claim 4, wherein the isolation coupling component is an optical coupler. ### Claim 6 A doorbell assembly, comprising: a power input terminal for receiving an input power; a power output terminal; two doorbell trigger terminals; a power conversion unit coupled between the power input terminal and the power output terminal for generating a sensing signal in response to an electric potential of the power output terminal, wherein while the electric potential of the power output terminal is grounded, the power input terminal and the power output terminal are disconnected; wherein while the electric potential of the power output terminal is not grounded, the power input terminal and the power output terminal are connected to have the power output terminal output an output power based upon the input power; a trigger signal unit coupled between the power conversion unit and the two doorbell trigger terminals for controlling the two doorbell trigger terminals to be opened or shorted based upon the sensing signal, wherein while the electric potential of the power output terminal is grounded, the two doorbell trigger terminals are shorted; wherein while the electric potential of the power output terminal is not grounded, the two doorbell trigger terminals are opened; a doorbell unit coupled between the power input terminal and the two doorbell trigger terminals for outputting a doorbell sound while the two doorbell trigger terminals are shorted, and not outputting the doorbell sound while the two doorbell trigger terminals are opened. ### Claim 7 (depends on 6) The doorbell assembly of claim 6, wherein the power conversion unit comprises: a voltage dividing circuit coupled to the power output terminal for generating a control signal based upon a dividing of the electric potential of the power output terminal; and a first switch coupled between the power input terminal and the power output terminal, the first switch comprising a control electrode, the control electrode being coupled to the voltage dividing circuit for having the first switch connected or disconnected based upon the control signal. ### Claim 8 (depends on 7) The doorbell assembly of claim 7, further comprising a second switch comprising a first terminal, a second terminal, and a control terminal, wherein the control terminal is coupled to the voltage dividing circuit, the first terminal is coupled to the control electrode of the first switch, and the second terminal is grounded, wherein the first switch is a P-type transistor, and while the electric potential of the power output terminal is not grounded, the second switch is connected to have the control electrode of the first switch grounded and the first switch connected. ### Claim 9 (depends on 7) The doorbell assembly of claim 7, wherein the power conversion unit further comprises a bypass circuit coupled to two terminals of the first switch for transmitting the sensing signal, the trigger signal unit comprises an isolation coupling component, the isolation coupling component comprises a primary side and a secondary side, the primary side receives the sensing signal, and the secondary side is coupled to the two doorbell trigger terminals. ### Claim 10 (depends on 6) The doorbell assembly of claim 6, wherein the isolation coupling component is an optical coupler.