US 12,437,189 B2
Encoder and operation method thereof
Sung Eun Kim, Daejeon (KR); Tae Wook Kang, Daejeon (KR); Hyuk Kim, Daejeon (KR); Young Hwan Bae, Daejeon (KR); Kyung Jin Byun, Daejeon (KR); Kwang Il Oh, Daejeon (KR); Jae-Jin Lee, Daejeon (KR); and In San Jeon, Daejeon (KR)
Assigned to ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE, Daejeon (KR)
Filed by Electronics and Telecommunications Research Institute, Daejeon (KR)
Filed on Aug. 25, 2022, as Appl. No. 17/895,532.
Claims priority of application No. 10-2021-0113270 (KR), filed on Aug. 26, 2021; and application No. 10-2022-0026567 (KR), filed on Mar. 2, 2022.
Prior Publication US 2023/0068675 A1, Mar. 2, 2023
Int. Cl. G06N 3/065 (2023.01); G06N 3/049 (2023.01)
CPC G06N 3/065 (2023.01) [G06N 3/049 (2013.01)] 19 Claims
OG exemplary drawing
 
1. An encoder comprising:
an event layer configured to output a first event signal and a second event signal;
a weight layer configured to apply a first weight to the first event signal, to apply a second weight to the second event signal, and to provide the first event signal in which the first weight is applied and the second event signal in which the second weight is applied to a first node; and
a first spike generation circuit configured to generate a first input spike signal of which a firing period is changed based on a voltage level of the first node,
wherein the voltage level of the first node is reduced continuously, increases for a first voltage corresponding to the first weight in response to the first event signal activated, and increases for a second voltage corresponding to the second weight in response to the second event signal activated,
wherein, when the voltage level of the first node is a first level, a firing period of the first input spike signal is a first time interval, and
wherein, when the voltage level of the first node is a second level lower than the first level, the firing period of the first input spike signal is a second time interval longer than the first time interval.