IP Library Granted Patent US 9,602,123
Granted Patent B2
US 9,602,123 · App. 15/107,568 · Granted Mar 21, 2017

Cognitive signal converter

Inventors: Rolf Sundblad (Ljungsbro, SE); Staffan Holmbring (Linköping, SE); Robert Hägglund (Linköping, SE); Emil Hjalmarsson (Linköping, SE)
Assignees: ANATACUM DESIGN AB; FINGERPRINT CARDS AB
H03M1/1245H03M1/1009H03M1/1265H03M1/38H03M1/46H03M1/0624
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Quick Facts
Patent No.
US 9,602,123
App. No.
15/107,568
Granted
Mar 21, 2017
Kind
B2
Abstract

A cognitive signal converter adapted to produce a digital output signal based on an analog input signal comprises an analog-to-digital converter (ADC) and a cognitive network. The ADC is adapted to produce a digital converted signal based on the analog input signal, a sample clock signal and a process clock signal by sampling the analog input signal in accordance with the sample clock signal and quantizing each analog input signal sample based on the process clock signal. The cognitive network is adapted to receive the digital converted signal of the ADC, control at least one of the sample clock signal and the process clock signal based on the received digital converted signal and one or more characteristics of the analog signal source, and produce the digital output signal based on the received digital converted signal. Corresponding integrated circuit, electronic device and method are also disclosed.

Claims (33)

1. A cognitive signal converter connectable to an analog signal source via an analog signal input port and adapted to produce a digital output signal based on an analog input signal received via the analog signal input port, the cognitive signal converter comprising an analog-to-digital converter and a cognitive network, wherein:

the analog-to-digital converter is adapted to produce a digital converted signal based on the analog input signal, a sample clock signal and a process clock signal by sampling the analog input signal in accordance with the sample clock signal and using the process clock signal to control an operational speed of the analog-to-digital converter when quantizing each analog input signal sample, wherein the quantizing process is operated by the process clock signal; and

the cognitive network is adapted to:

receive the digital converted signal of the analog-to-digital converter; control at least one of the sample clock signal and the process clock signal based on the received digital converted signal and one or more characteristics of the analog signal source; and

produce the digital output signal based on the received digital converted signal.

2. The cognitive signal converter of claim 1 wherein the cognitive network is further adapted to:

predict at least part of a next sample of the digital converted signal based on the received digital converted signal and one or more characteristics of the analog signal source; and

control at least one of the sample clock signal and the process clock signal based on the at least partially predicted next sample.

3. The cognitive signal converter of claim 2 wherein the analog-to-digital converter is further adapted to produce the digital converted signal based on the at least partially predicted next sample.

4. The cognitive signal converter of claim 3 wherein the analog-to-digital converter is adapted to produce the digital converted signal by comparing a next sample of the analog input signal with the at least partially predicted next sample.

5. The cognitive signal converter of claim 2 wherein the cognitive network is adapted to control the sample clock in relation to a difference between the received digital converted signal and the at least partially predicted next sample.

6. The cognitive signal converter of claim 2 wherein the cognitive network is adapted to control the process clock in relation to a difference between the received digital converted signal and the at least partially predicted next sample.

7. The cognitive signal converter of claim 2 wherein the cognitive network is further adapted to control a conversion range of the analog-to-digital converter based on the at least partially predicted next sample.

8. The cognitive signal converter of claim 1 wherein the digital output signal is equal to one of:

the received digital converted signal;

an adjusted version of the received digital converted signal; and

a classification of the analog input signal based on the received digital converted signal.

9. The cognitive signal converter of claim 1 further comprising an image processing framer adapted to subject the digital converted signal of the analog-to-digital converter to a framing operation, and wherein the cognitive network is adapted to receive the framed digital converted signal as the digital converted signal of the analog-to-digital converter.

10. The cognitive signal converter of claim 9 , wherein the cognitive network is further adapted to detect a background item of the framed digital converted signal and a moving item of the framed digital converted signal and to control the framing operation of the image processing framer based on the detection.

11. The cognitive signal converter of claim 9 wherein the analog-to-digital converter is a first analog-to-digital converter and the cognitive network is a first cognitive network, the cognitive signal converter further comprising a second analog-to-digital converter and a second cognitive network, wherein the first cognitive network is adapted to control the second cognitive network.

12. An integrated circuit comprising the cognitive signal converter of claim 1 .

13. An electronic device comprising the cognitive signal converter of claim 1 .

14. A method of operating an analog-to-digital converter, the method comprising:

receiving an analog input signal via an analog signal input port of a cognitive signal converter comprising the analog-to-digital converter;

producing a sample of a digital converted signal based on the analog input signal, a sample clock signal and a process clock signal by sampling the analog input signal in accordance with the sample clock signal and using the process clock

signal to control an operational speed of the analog-to-digital converter when quantizing the analog input signal sample, wherein the quantizing process is operated by the process clock signal;

controlling at least one of the sample clock signal and the process clock signal based on the digital converted signal and one or more characteristics of the analog signal source; and

producing a digital output signal based on the digital converted signal.

15. The method of claim 14 further comprising:

predicting at least part of a next sample of the digital converted signal based on the digital converted signal and one or more characteristics of the analog signal source; and

controlling at least one of the sample clock signal and the process clock signal based on the at least partially predicted next sample.

16. The method of claim 15 further comprising producing a next sample of the digital converted signal based on the at least partially predicted next sample.

17. An electronic device comprising the integrated circuit of claim 12 .

Assignments (4)
CORRECTIVE ASSIGNMENT TO CORRECT THE PATENT NUMBER 10945920 WHICH SHOULD HAVE BEEN ENTERED AS 10845920 PREVIOUSLY RECORDED ON REEL 058218 FRAME 0181. ASSIGNOR(S) HEREBY CONFIRMS THE ASSIGNMENT. Recorded Sep 15, 2022
From: FINGERPRINT CARDS AB
To: FINGERPRINT CARDS ANACATUM IP AB
Reel/Frame 064053/0400 →
CHANGE OF NAME Recorded Nov 22, 2021
From: ANACATUM DESIGN AB
To: FINGERPRINT CARDS ANACATUM IP AB
Reel/Frame 058218/0636 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Nov 22, 2021
From: FINGERPRINT CARDS AB
To: FINGERPRINT CARDS ANACATUM IP AB
Reel/Frame 058218/0181 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Jun 23, 2016
From: SUNDBLAD, ROLF; HOLMBRING, STAFFAN; HÄGGLUND, ROBERT; HJALMARSSON, EMIL
To: ANACATUM DESIGN AB; FINGERPRINT CARDS AB
Reel/Frame 038994/0342 →
Priority Claims (1)
SE 1450033 · Jan 15, 2014 · national
Continuity (1)
Related Publication 20160322984A1 · Nov 3, 2016