# US 11,451,729 B2 · Reset method, reset device, and reset system and pixel array using the same > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 11,451,729 B2 - Document ID: US11451729B2 - Status: Granted - Kind: B2 - Application number: 17/288,279 - Filed: 2019-06-03 - Published: 2021-12-16 - Granted: 2022-09-20 - Earliest claimed: 2018-10-24 - Assignees: Ningbo ABAX Sensing Electronic Technology Co., Ltd. - Applicants: Ningbo ABAX Sensing Electronic Technology Co., Ltd. - Inventors: Shuyu Lei - Web page: https://patentgrep.com/patent/US11451729B2 ## CPC - H04N 25/65: applied to reset noise, e.g. KTC noise related to CMOS structures by techniques other than CDS - H04N 25/57: Control of the dynamic range - H04N: PICTORIAL COMMUNICATION, e.g. TELEVISION ## Abstract The embodiments of the present disclosure provide a reset method, a reset device, a reset system and a pixel array using the same. The reset method includes an electric charge accumulation unit being configured to store a first electric charge and an electric charge storage unit being configured to store a second electric charge. A polarity of the first electric charge is opposite to a polarity of the second electric charge. The reset method includes controlling the electric charge storage unit to obtain the second electric charge; and resetting the electric charge accumulation unit so as to transfer a preset amount of the second electric charge from the electric charge storage unit to the electric charge accumulation unit, which includes a third port of the control module applying a control voltage to a second end of the electric charge storage unit; and meanwhile charging the electric charge storage unit during the process of transferring the second electric charge. ## Claims ### Claim 1 A reset method, wherein an electric charge accumulation unit is configured to store a first electric charge and an electric charge storage unit is configured to store a second electric charge; a polarity of the first electric charge is opposite to a polarity of the second electric charge; the reset method comprising the following steps: controlling the electric charge storage unit to obtain the second electric charge; and resetting the electric charge accumulation unit so as to transfer a preset amount of the second electric charge from the electric charge storage unit to the electric charge accumulation unit, which comprises a third port of the control module applying a control voltage to a second end of the electric charge storage unit; and meanwhile charging the electric charge storage unit during the process of transferring the second electric charge. ### Claim 2 (depends on 1) The reset method of claim 1, wherein controlling the electric charge storage unit to obtain the second electric charge specifically comprises a first signal controlling the electric charge storage unit to charge; and resetting the electric charge accumulation unit specifically comprises a second signal controlling the electric charge storage unit to discharge. ### Claim 3 (depends on 2) The reset method of claim 2, wherein the first signal controlling the electric charge storage unit to charge comprises the first signal controlling a first switch so that the second electric charge could be stored in the electric charge storage unit, wherein the first signal is output from a first port of a control module to the first switch, and the first switch is connected between a first end of the electric charge storage unit and the first port of the control module. ### Claim 4 (depends on 3) The reset method of claim 3, after the first signal controlling the electric charge storage unit to charge and before the second signal controlling the electric charge storage unit to discharge, further comprising releasing the second electric charge stored in the electric charge storage unit by the first switch so that the electric charge storage unit is able to obtain the preset amount of the second electric charge. ### Claim 5 (depends on 4) The reset method of claim 4, wherein the second electric charge stored in the electric charge storage unit keeps releasing by the first switch until the first switch stays in a sub-threshold region, so that the electric charge storage unit is able to obtain the preset amount of the second electric charge. ### Claim 6 (depends on 2) The reset method of claim 2, wherein the second signal controlling the electric charge storage unit to discharge specifically comprises the second signal controlling a second switch to be turned off so that the second electric charge could be transferred from the electric charge storage unit to the electric charge accumulation unit; the second signal is output from a second port of the control module to a control end of the second switch; and the second switch is connected between the first end of the electric charge storage unit and the electric charge accumulation unit. ### Claim 7 (depends on 6) The reset method of claim 6, wherein the second signal controlling the electric charge storage unit to discharge further comprises a first start time is defined when the second signal controls the second switch to be turned off, when the first start time runs through a first preset time period, or when the second switch is in the sub-threshold region, the second switch is turned off to stop the second electric charge from transferring from the electric charge storage unit to the electric charge accumulation unit. ### Claim 8 (depends on 7) The reset method of claim 7, wherein the third port of the control module applying a control voltage to the second end of the electric charge storage unit specifically means that the control voltage applied to the second end of the electric charge storage unit through the third port of the control module is gradually changed according to a preset direction. ### Claim 9 (depends on 7) The reset method of claim 7, wherein the third port of the control module applying a control voltage to the second end of the electric charge storage unit specifically means that a second start time is defined when the second electric charge starts to transfer from the electric charge storage unit to the electric charge accumulation unit; when the second start time runs through a second preset time period, the third port of the control module charges the second end of the electric charge storage unit so as for the control voltage to change to a preset threshold; then the control voltage is kept at the preset threshold until the second switch is turned off, then the control module stops charging the second end of the electric charge storage unit. ### Claim 10 (depends on 1) The reset method of claim 1, before resetting the electric charge storage unit, further including: determining whether a voltage converted by the first electric charge stored in the electric charge accumulation unit has exceeded a preset threshold voltage; and resetting the electric charge accumulation unit, wherein the electric charge accumulation unit will be reset once it is determined that the voltage converted by the first electric charge stored in the electric charge accumulation unit exceeds the preset threshold voltage. ### Claim 11 (depends on 10) The reset method of claim 10, wherein resetting the electric charge accumulation unit specifically means that once it is determined that the voltage converted by the first electric charge exceeds the preset threshold voltage, the control module resets the electric charge accumulation unit or the control module resets the electric accumulation unit according to a preset time order. ### Claim 12 A reset device comprising: an electric charge accumulation unit for storing a first electric charge; an electric charge storage unit for storing a second electric charge, wherein a polarity of the first electric charge is opposite to a polarity of the second electric charge; and a control module for controlling the electric charge storage unit to obtain the second electric charge and resetting the electric charge accumulation unit so as to transfer a preset amount of the second electric charge from the electric charge storage unit to the electric charge accumulation unit, which comprises a third port of the control module applying a control voltage to a second end of the electric charge storage unit; and meanwhile the electric charge storage unit is charged during the process of transferring the second electric charge. ### Claim 13 (depends on 12) The reset device of claim 12, wherein during the control module controlling the electric charge storage unit to obtain the second electric charge, the control module controls the electric charge storage unit to charge through the first signal; and during resetting the electric charge accumulation unit by the control module, the control module controls the electric charge storage unit to discharge through the second signal. ### Claim 14 (depends on 13) The reset device of claim 13, further comprising a first switch, wherein the first switch is connected between a first end of the electric charge storage unit and the first port of the control module; during the control module controlling the electric charge storage unit to charge through the first signal, the control module is further configured to control the first switch to allow the second electric charge to be stored in the electric charge storage unit through the first signal; and the first signal is output from the first port of the control module to the first switch. ### Claim 15 (depends on 14) The reset device of claim 14, wherein after the first signal controlling the electric charge storage unit to charge and before the second signal controlling the electric charge storage unit to discharge, the control module is further configured to release the second electric charge stored in the electric charge storage unit through the first switch so that the electric charge storage unit is able to obtain the preset amount of the second electric charge. ### Claim 16 (depends on 15) The reset device of claim 15, wherein the control module is configured to release the second electric charge stored in the electric charge storage unit by the first switch until the first switch stays in a sub-threshold region, so that the electric charge storage unit is able to obtain the preset amount of the second electric charge. ### Claim 17 (depends on 13) The reset device of claim 13, further comprising a second switch, wherein the second switch is connected between the first end of the electric charge storage unit and the electric charge accumulation unit; and during the control module controlling the electric charge storage unit to discharge through the second signal, the second switch is controlled through the second signal to be turned off so as to transfer the second electric charge from the electric charge storage unit to the electric charge accumulation unit; the second signal is output from a second port of the control module to a control end of the second switch. ### Claim 18 (depends on 17) The reset device of claim 17, wherein during the second signal controlling the electric charge storage unit to discharge, a first start time is defined when the second signal controls the second switch to be turned off, when the first start time runs through a first preset time period, or when the second switch is in the sub-threshold region, the second switch is turned off to stop the second electric charge from transferring from the electric charge storage unit to the electric charge accumulation unit. ### Claim 19 (depends on 12) The reset device of claim 12, wherein the third port of the control module applying a control voltage to the second end of the electric charge storage unit specifically means that the control voltage applied to the second end of the electric charge storage unit through the third port of the control module is gradually changed according to a preset direction. ### Claim 20 (depends on 12) The reset device of claim 12, wherein during the third port of the control module applying the control voltage to the second end of the electric charge storage unit, a second start time is defined when the second electric charge starts to transfer from the electric charge storage unit to the electric charge accumulation unit, when the second start time runs through a second preset time period, the third port of the control module charges the second end of the electric charge storage unit so as for the control voltage to change to a preset threshold, then the control voltage is kept at the preset threshold until the second switch is turned off to stop charging the second end of the electric charge storage unit.