PATENT CLAIM ANALYSIS

Application Number: 16092001
Application Type: Utility
Filing Date: 2018-10
Publication Date: 2019-04
Patent Classification: ["365", "148000"]

Abstract:
The invention relates to an electronic memristive device that has a complementary analogue reconfigurable memristive bidirectional resistive switch. The device has a memristive layer sequence having a BFTO/BFO/BFTO three-ply layer and two electrodes. Titanium traps are arranged in the BFTO interfaces. As a result of mobile acid vacancies, the potential barriers at the interfaces of the electrodes with respect to the memristive layer sequence are in flexible form. By applying voltage pulses, the acid vacancies can be shifted from the interface with respect to the first electrode to the interface with respect to the second electrode, with raising of the potential barrier at one electrode bringing about complementary lowering of the potential barrier of the other electrode. The method according to the invention for operating the device proposes adapted writing processes that use the overlaying of writing pulse sequences to achieve stipulation of a state pair of complementary resistor states. In conjunction with reading pulses of adapted polarity, the device can implement fuzzy logic and be operated as an artificial synapse with the realisation of all four learning curves for complementary learning. A plurality of options for the use of the device operated according to the invention are proposed

Claim (Index 1):
Method for operating an electronic memristive device comprising a complementary analogue reconfigurable memristive bidirectional resistive switch,\n the memristive device comprising a memristive layer sequence, and the memristive layer sequence separating a first electrode and a second electrode from one another, and the first and the second electrode contacting the memristive layer sequence in an electrically conductive manner, and the first and the second electrode being electrically conductively connected to a device for generating voltage pulses and for measuring currents, and the voltage pulses having different pulse shapes, at least one pulse shape, referred to as the writing pulse, decaying over time, and the memristive device being able to occupy two mutually different state pairs of complementary resistance states, each state pair implementing a high resistance state (HRS) in one current direction and a low resistance state (LRS) complementary to said state in the opposite current direction, characterised in that a) a writing process for reconfiguring the memristive device is carried out by means of at least one writing pulse sequence pair, a writing pulse sequence comprising at least\n a guide pulse having a voltage, and \n a subsequent writing pulse having a falling edge and being of an opposite polarity to the guide pulse, \n and the guide pulses being of the same polarity and the following writing pulses having the falling edges also being of mutually the same polarity, but which polarity is opposite to that of the guide pulses, \n by superimposing the pair of writing pulse sequences with one another, the first writing pulse sequence being applied to the first electrode, and the second writing pulse sequence being applied to the second electrode, and the determination of the state pair of complementary resistance states takes place when, due to to the temporal superimposition of the writing pulse, having a falling edge, of the first writing pulse sequence, and the guide pulse of the second writing pulse sequence, the absolute value of the voltage of the superimposed pulses reaches or exceeds the absolute value of a minimum writing voltage for a minimum writing period that is dependent on the minimum writing voltage, and a negative writing pulse sequence pair for a negative temporal offset being present if the positive writing pulse, having the falling edge, of the first writing pulse sequence temporally precedes the negative guide pulse of the second writing pulse sequence and the superimposed writing pulse sequence pair writes the complementary states PHRS and NLRS as a state pair (PHRS, NLRS), or a positive writing pulse sequence pair for a positive temporal offset being present if the positive writing pulse, having the falling edge, of the first writing pulse sequence temporally precedes the negative guide pulse of the second writing pulse sequence and the superimposed writing pulse sequence pair writes the complementary states PLRS and NHRS as a state pair (PLRS, NHRS), b) the reading process for reading out a state of the complementary resistance states of a state pair is carried out by means of at least one voltage pulse being applied to the first or the second electrode as a reading pulse with a reading voltage, the absolute value of which is smaller than the absolute value of the minimum writing voltage, and a current output signal s being detected,\n a PHRS state being read out for a positive reading pulse in the case of a preceding negative writing pulse sequence pair, \n an NLRS state being read out for a negative reading pulse in the case of a preceding negative writing pulse sequence pair, \n a PLRS state being read out for a positive reading pulse in the case of a preceding positive writing pulse sequence pair, \n an NHRS state being read out for a negative reading pulse in the case of a preceding positive writing pulse sequence pair.

Metadata:
- Claim Count in Document: 26.0
- Percentile: 97.0
- Lexical Diversity: 2.0
- Patent Class: 365.0
- Transitional Phrase Type: open
- Component Type: 1
- Foreign Priority: True
- Related Applications: ['14038197', '14126397', '14126410', '14862187', '13408134']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.739201234656181
- 35 USC 102 Novelty (BERT): 0.4772105253346829
- Combined Prediction Score: 0.7130021637240312
- Mean Citation Score: 162.47133200000005
- Max Citation Score: 177.66513
- Similarity Product: 129.44075031190576

Labels:
- Claim Label 101: 1
- Claim Label 102: 1
- Claim Label 103: 1
- Claim Label 112: 1
- Combined Label: 1
- Label 101 Adjusted: 1

Dataset: test