公开(公告)号：US20160322984A1

公开(公告)日：2016-11-03

申请号：US15107568

申请日：2014-12-03

Applicant: Anacatum Design AB ,  Fingerprint Cards AB

Inventor： Rolf SUNDBLAD ,  Staffan HOLMBRING ,  Robert HÄGGLUND ,  Emil HJALMARSSON

IPC: H03M1/12 ,  H03M1/10 ,  H03M1/46 ,  H03M1/38

CPC classification number: H03M1/1245 ,  H03M1/0624 ,  H03M1/1009 ,  H03M1/1265 ,  H03M1/38 ,  H03M1/46

Abstract: 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 is disclosed. The cognitive signal converter comprises an analog-to-digital converter and a cognitive network. 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 quantizing each analog input signal sample, wherein the quantizing process is operated by the process clock signal. 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. Corresponding integrated circuit, electronic device and method are also disclosed.

Abstract translation: 公开了一种通过模拟信号输入端口连接到模拟信号源并适于产生基于经由模拟信号输入端口接收的模拟输入信号的数字输出信号的认知信号转换器。 认知信号转换器包括模数转换器和认知网络。 模拟 - 数字转换器适于基于模拟输入信号，采样时钟信号和处理时钟信号，通过根据采样时钟信号对模拟输入信号进行采样并量化每个模拟输入信号来产生数字转换信号 采样，其中量化处理由处理时钟信号操作。 认知网络适于接收模拟 - 数字转换器的数字转换信号，基于接收的数字转换信号和模拟信号的一个或多个特性来控制采样时钟信号和处理时钟信号中的至少一个 源，并且基于接收到的数字转换信号产生数字输出信号。 还公开了相应的集成电路，电子设备和方法。

公开(公告)号：US20200064901A1

公开(公告)日：2020-02-27

申请号：US16609573

申请日：2018-04-24

Applicant: FINGERPRINT CARDS AB

Inventor： Peter ALMERS ,  David CARLING ,  Rolf SUNDBLAD ,  Nicholas WEINER ,  Benjamin WILLCOCKS

IPC: G06F1/3234 ,  G06F11/30 ,  G06F1/3206 ,  G06F1/26 ,  G06F1/10 ,  G06F21/60 ,  G06F21/62 ,  G06F21/32 ,  G06K19/07 ,  H04B5/00 ,  G06K9/00

Abstract: A method of controlling operation of a field-powered biometric device comprising biometric acquisition circuitry, processing circuitry controllable to transition between a first functional state having a first power consumption and a second functional state having a second power consumption lower than the first power consumption, and power management circuitry. The method comprises the steps of monitoring, by the power management circuitry, a property indicative of a supply voltage to the processing circuitry; controlling, when the monitored property indicates that the supply voltage has fallen to a first threshold voltage, the processing circuitry to transition from the first functional state to the second functional state; and controlling, when the monitored property indicates that the supply voltage has increased to a second threshold voltage higher than the first threshold voltage, the processing circuitry to transition from the second functional state to the first functional state.