Inductively coupled neural network

• US 5,371,835 A
• Filed: 08/12/1992
• Issued: 12/06/1994
• Est. Priority Date: 02/20/1990
• Status: Expired due to Fees

• Current Assignee: Kabushikikaisha Wacom
• Original Assignee: Kabushikikaisha Wacom
• Inventors: Akamatsu, Norio, Yamamoto, Sadao, Fukuzaki, Yasuhiro, Murakami, Azuma, Yamane, Ryuichi
• Primary Examiner(s): Downs, Robert W.
• Application Number:
  US07/928,077
• Time in Patent Office: 846 Days
• Field of Search: 395/24, 364/807, 364/822
• US Class Current: 706/26
• CPC Class Codes: G06N 3/063 using electronic means
• CPC Class Codes: G06N 3/065 Analogue means

Abstract

A neural coupling includes a pair of primary and secondary members for coupling a precedent node to a subsequent node to synaptically transmit a signal through a neural network. A primary member responds to a signal from a precedent node to generate an inductive field according to the received signal. A secondary member spatially coupled to the primary member by the inductive field supplies to a subsequent node a corresponding signal in response to the inductive field to effect synaptic transmission of the signal through the neural network.

Claims

1. A neural network comprising:

a plurality of input terminals;

a plurality of primary neurons each having an output;

multiple primary coils, each of the input terminals being connected to one of said primary coils;

the output of each of the primary neurons being connected to others of said primary coils;

multiple secondary coils;

some of said secondary coils being magnetically coupled to the primary coils respectively connected to the input terminals;

others of said secondary coils being magnetically coupled to the others of the primary coils respectively connected to the outputs of the primary neurons; and

multiple secondary neurons each having an input connected to each of the secondary coils.

2. The neural network of claim 1 further including a plurality of resonance circuits including the multiple primary and secondary coils.

3. The neural network of claim 1 further including a plurality of impedance elements each connected to a corresponding coil to define a synaptic coupling weight.

4. A neural coupling for coupling a precedent node to a subsequent node to synaptically transmit a signal through a neural network, comprising:

primary means responsive to a signal from a precedent node for generating an inductive field according to the received signal; and

secondary means spatially coupled to the primary means by the inductive field for supplying to a subsequent node a corresponding signal in response to the inductive field for synaptically transmitting the signal through the neural network, the primary means including a primary element electrically connected to one of said precedent nodes for generating an inductive field, the secondary means including a secondary element inductively coupled to the primary element and electrically connected to one of said subsequent nodes, the primary means including multiple primary elements each connected to respective one of multiple ones of said precedent nodes, the secondary means including a single secondary element commonly inductively coupled to the multiple primary elements.

5. A neural coupling according to claim 4;

wherein the secondary element comprises a magnetoresistance element responsive to the inductive magnetic field.

6. A neural coupling according to claim 4;

wherein the primary element comprises a primary resonance circuit for generating an inductive electromagnetic field, and the secondary element comprises a secondary resonance circuit inductively coupled to the primary resonance circuit by the electromagnetic field.

7. A neural coupling for coupling a precedent node to a subsequent node to synaptically transmit a signal through a neural network, comprising:

primary means responsive to a signal from a precedent node for generating an inductive field according to the received signal; and

secondary means spatially coupled to the primary means by the inductive field for supplying to a subsequent node a corresponding signal in response to the inductive field for synaptically transmitting the signal through the neural network, the primary means including a primary element electrically connected to one of said precedent nodes for generating an inductive field, the secondary means including a secondary element inductively coupled to the primary element and electrically connected to one of said subsequent nodes, the primary means including an array of primary elements arranged in rows and columns, each column of the primary elements being electrically connected to a respective one of a plurality of said precedent nodes, the secondary means including plural linear secondary elements arranged in parallel rows, each of said linear secondary elements being inductively coupled to each corresponding row of the primary elements and being electrically connected to a respective one of a plurality of said subsequent nodes.

8. The neural coupling of claim 16 further including a primary planar substrate having formed integrally thereon an array of said primary elements, and a secondary planar substrate having formed integrally thereon a plurality of said linear secondary elements connected in parallel, the secondary planar substrate being spatially opposed to the primary planar substrate such that the linear and parallel connected secondary elements are spatially aligned with the array of primary elements to constitute the inductive coupling therebetween.

9. A neural coupling for coupling a precedent node to a subsequent node to synaptically transmit a signal through a neural network, comprising:

primary means responsive to a signal from a precedent node for generating an inductive field according to the received signal; and

secondary means spatially coupled to the primary means by the inductive field for supplying to a subsequent node a corresponding signal in response to the inductive field for synaptically transmitting the signal through the neural network, adaptive means for adaptively adjusting the value of a synaptic coupling weight by controlling the inductive field magnitude for synaptically transmitting the signal, the primary means including a resonance circuit for generating an inductive electromagnetic field, and the adaptive means including a variable impedance element electrically connected to the resonance circuit for controlling the inductive electromagnetic field magnitude according to the variable impedance element impedance value which determines the synoptic coupling weight.