摘要:
An apparatus comprising a frequency monitor circuitry to receive a first clock signal, a second clock signal and an expected frequency ratio, determine whether a ratio between the first clock signal and the second clock signal matches an expected an expected frequency ratio and generate an error signal upon a determination that the ratio between the first clock signal and the second clock signal does not match the expected frequency ratio.
摘要:
There is proposed a method and system for determining a phase-alignment between first and second clock signals of differing frequency. The method comprise: sampling a value of the first clock signal at instants defined by an edge of the second clock signal; defining a sequence of samples of the first clock signal that are separated by N cycles of the second clock signal, where N is an integer greater than 1; and detecting the occurrence of a predetermined pattern of values in the defined sequence.
摘要:
A dual-mode, semi-active, laser-based and passive image-based seeker for projectiles, missiles, and other ordnance that persecute targets by detecting and tracking energy scattered from targets. The disclosed embodiments use a single digital imager having a single focal plane array sensor to sense data in both the image-based and laser-based modes of operation. A shuttering technique allows the relatively low frame-rate of the digital imager to detect, decode and localize in the imager's field-of-view a known pulse repetition frequency (PRF) from a known designator in the presence of ambient light and other confusing target designators, each having a different PRF.
摘要:
A system and method are presented for verifying the operating frequency of digital control circuitry. The system and method according to the present disclosure provide for a digitally controlled system, such as an electrosurgical system, to confirm or verify its operating frequency using a single external device, and software and/or firmware.
摘要:
There is provided a CDR circuit mitigating operation speed of a phase comparison circuit and having a stable clock extraction function and data rectifying function even for a high-speed data signal input. The phase comparison circuit operates by a clock signal having a cycle twice as long as a unit time width of the data signal input. In this phase comparison circuit, a phase error signal pulse width indicating the phase difference between the data signal transient point and the clock signal transient point is prolonged by the unit time width of the data signal.
摘要:
L'invention concerne un procédé et un dispositif de détection d'erreurs de synchronisation entre des signaux logiques d'un groupe de signaux logique (CK1-CK4). Selon l'invention, un mot de contrôle (CW) est chargé dans un registre à décalage (SREG2) agencé en boucle et cadencé par des signaux logiques résultants (CKO, CKA) égaux au résultat de la fonction OU logique et au résultat de la fonction ET logique appliquée aux signaux logiques du groupe de signaux logiques. La valeur du mot de contrôle est surveillée au fur et à mesure de sa propagation dans le registre à décalage, et un signal d'erreur de synchronisation (SERS) est émis si le mot de contrôle change de valeur. Application notamment à la vérification de l'intégrité d'un arbre d'horloge dans un circuit intégré.
标题翻译:DIGITALFILTERANORDNUNG,PHASENDETEKTIONSANORDNUNG,POSITIONSDETEKTIONSANORDNUNG,AD-UMSETZUNGSANORDNUNG,NULLDURCHGANGS-DETEKTIONSANORDNUNG UND DIGITALFILTERPROGRAMM
摘要:
A digital filter device capable of removing the effect of noise such as chattering from a zero crossing signal is provided. A digital filter device 4 filtering a binary digital signal DIN and outputting a binary digital signal DOUT is provided with a toggle flip-flop 12 which switches a signal level of the digital signal DOUT each time a trigger signal is input; an XOR circuit 13 which outputs a first enable signal EN1 while a signal level of the digital signal DIN does not match with the signal level of the output digital signal DOUT; and a charge counter 14 which counts in synchronization with a clock signal CLK while the first enable signal EN1 is input and resets the count to an initial value and outputs a carry on signal ON_RCO as the trigger signal to the toggle flip-flop 12 when the count has reached an upper limit value.
摘要:
L'invention concerne un procédé et un dispositif de détection d'erreurs de synchronisation entre des signaux logiques d'un groupe de signaux logique (CK1-CK4). Selon l'invention, un mot de contrôle (CW) est chargé dans un registre à décalage (SREG2) agencé en boucle et cadencé par des signaux logiques résultants (CKO, CKA) égaux au résultat de la fonction OU logique et au résultat de la fonction ET logique appliquée aux signaux logiques du groupe de signaux logiques. La valeur du mot de contrôle est surveillée au fur et à mesure de sa propagation dans le registre à décalage, et un signal d'erreur de synchronisation (SERS) est émis si le mot de contrôle change de valeur. Application notamment à la vérification de l'intégrité d'un arbre d'horloge dans un circuit intégré.