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| Number | Title | Issue Date |
| 8179164 | Pulse signal generating device, transport device, image forming apparatus, and pulse generating method A pulse signal generating device includes: an encoder that outputs a pulse with a period corresponding to the speed of an object to be detected; a measurement unit that measures a period of the pulse; a storage unit that stores the measured period; an operation unit... | 05/15/2012 |
| 8081014 | Apparatus for detecting presence or absence of oscillation of clock signal A semiconductor apparatus includes an arithmetic circuit that executes a program based on an operating clock signal input through a clock transfer node, an internal oscillator that generates an internal clock signal to be used internally, a watch dog timer that coun... | 12/20/2011 |
| 7986168 | Semiconductor apparatus and anomaly detection method of the same A semiconductor apparatus includes an arithmetic circuit that executes a program based on an operating clock signal input through a clock transfer node, an internal oscillator that generates an internal clock signal to be used internally, a watch dog timer that coun... | 07/26/2011 |
| 7872505 | Semiconductor apparatus and anomaly detection method of the same A semiconductor apparatus includes an arithmetic circuit that executes a program based on an operating clock signal input through a clock transfer node, an internal oscillator that generates an internal clock signal to be used internally, a watch dog timer that coun... | 01/18/2011 |
| 7859313 | Edge-missing detector structure An edge-missing detector structure includes a first detector, a first delay unit, a first logic gate, a second detector, a second delay unit, and a second logic gate. After being input separately into the edge-missing detector structure, a first reference signal and... | 12/28/2010 |
| 7733131 | Signal presence detector A signal presence detection device has a first reference voltage generation device in the form of a first voltage divider, a second reference voltage generation device in the form of a second voltage divider and a third reference voltage generation device in the for... | 06/08/2010 |
| 7714619 | High-frequency clock detection circuit In order to provide a high frequency clock detection circuit capable to detect a high frequency clock using any period as a threshold, the high frequency clock detection circuit of the present invention includes a delay circuit having a delay time set to be longer t... | 05/11/2010 |
| 7679404 | Missing clock pulse detector A method to detect a missing a clock pulse is provided. The method begins by providing a clock signal and a delayed clock signal. The delayed clock signal is then sampled to generate a sample of the delayed clock signal. A missing clock pulse may be detected if the ... | 03/16/2010 |
| 7414438 | Clock based voltage deviation detector The clock based voltage deviation detector of the present invention includes a pulse module, an indicator module and a correlation module. The pulse module generates a stream of reset pulses as a function of a clock signal. The indicator module generates a pass/fail... | 08/19/2008 |
| 7358776 | Signal detection circuit and signal detection method It is intended to provide a signal detection circuit and a signal detection method capable of preventing influences of variations in transistor characteristics, occurrence of yield degradations of the signal detection circuit and capable of detecting differential in... | 04/15/2008 |
| 7352214 | System and method for clock detection with glitch rejection A system and a method are presented for detecting the presence of at least one clock signal of a defined clock frequency applied to at least one input port of an integrated circuit system, wherein the a first number M of clock pulses related to the at least one cloc... | 04/01/2008 |
| 7296170 | Clock controller with clock source fail-safe logic A microcontroller integrated circuit with a clock controller and a processor automatically switches the source of the clock signal that clocks the processor from a failed fast external precision oscillator to a slow internal backup oscillator, then enables a fast in... | 11/13/2007 |
| 7280336 | Transient voltage detecting circuit The invention provides a transient voltage detecting circuit for detecting a transient voltage occurring at a power supply or a ground of an electronic system. The circuit according to the invention includes a plurality of detecting units of which the outputs are in... | 10/09/2007 |
| 7274221 | Comparator circuit An improved comparator circuit and associated methods are disclosed. In one embodiment, the comparator circuit comprises two voltage-to-time converter circuits, one for each input voltage to be compared, and an arbiter circuit for receiving the time-converted output... | 09/25/2007 |
| 7268589 | Address transition detector for fast flash memory device An address transition detector circuit includes an input node, an output node, a bandgap reference node, and Pbias and Nbias nodes having voltages derived from the bandgap reference node. First through fifth cascaded inverters are each powered ... | 09/11/2007 |
| 7257323 | Signal-off detection circuit and optical receiving device using the same This invention offers a signal-off detection circuit allowing arbitrary setting of an issuing time (response time) of a signal disconnection alarm without being affected by a time constant of a direct current feedback circuit giving an offset voltage to an amplifier... | 08/14/2007 |
| 7254662 | Data link layer device for a serial communication bus According to the IEEE1394 bus protocol, priority is given to isochronous data packets. Data transfer is done in transfer cycles under the control of a cycle master. It depends on the allocated bandwidth for isochronous data how much transport capacity is available i... | 08/07/2007 |
| 7245465 | Voltage regulator A voltage regulator has an output circuit for producing from an input voltage a predetermined output voltage to be supplied to a load, an overcurrent protection circuit for preventing overcurrent in the output circuit, a memory for storing control information fed fr... | 07/17/2007 |
| 7236758 | Integrated wireless multimedia integrated circuit An integrated circuit having a transmit chain configured to provide direct FM modulation of a voltage controlled oscillator of a frequency synthesizer by a composite signal that includes audio and video components, and a receive chain configured to provide a televis... | 06/26/2007 |
| 7183831 | Clock switching circuit A clock switching circuit suitably adapted to stable switching operation of high-frequency multiphase clock signals. The clock switching circuit receives two clock signals and selectively outputs one of the two clock signals in accordance with a selection signal. Th... | 02/27/2007 |
| 7176726 | Integrated loss of signal detection with wide threshold range and precise hysteresis A loss-of-signal (LOS) detector includes a variable gain amplifier with an input receiving an input signal, a threshold comparator with a first input receiving a signal derived from an output of the variable gain amplifier, a second input receiving a reference level... | 02/13/2007 |
| 7177385 | Shift register for safely providing a configuration bit The invention relates to a shift register cell for safely providing a configuration bit having a master latch which can be connected to a serial data input on the shift register cell for the purpose of buffer storing a data bit; a first slave latch which can be conn... | 02/13/2007 |
| 7170949 | Methods and apparatus for signaling on a differential link Methods and apparatus are disclosed for transitioning a receiver from a first state to a second state using an in-band signal over a differential serial data link. ... | 01/30/2007 |
| 7135885 | Dynamically adjustable signal detector A dynamically adjustable signal detector receives a differential input signal and outputs a signal indicative of whether a valid signal is being received based on dynamically adjustable threshold settings. The threshold settings can include differential voltage, pea... | 11/14/2006 |
| 7113003 | Presence indication signal associated with an attachment According to some embodiments, a presence indication associated with an attachment is provided. ... | 09/26/2006 |
| 7095256 | Low-power wide dynamic range envelope detector system and method An envelope detector system is disclosed for detecting an envelope in a system input signal. The envelope detector system includes an input node for receiving an input voltage signal, a transconducting amplifier for receiving the input voltage signal and producing a... | 08/22/2006 |
| 7088756 | Polarization maintaining dispersion controlled fiber laser source of ultrashort pulses A modelocked linear fiber laser cavity with enhanced pulse-width control includes concatenated sections of both polarization-maintaining and non-polarization-maintaining fibers. Apodized fiber Bragg gratings and integrated fiber polarizers are included in the cavity... | 08/08/2006 |
| 7068079 | Circuit device with clock pulse detection facility The invention refers to a circuit device (1) with at least one connection (3b), to which a clock pulse (/CLK, /CLKT) can be applied, whereby the circuit device (1) also comprises a clock pulse detection facility (2) for ... | 06/27/2006 |
| 7038508 | Methods and apparatuses for detecting clock loss in a phase-locked loop Embodiments of the present invention describe methods and apparatuses for detecting signal loss in circuits such as a phase-locked loop (PLL). In one embodiment a PLL is equipped with detection logic to detect loss of a reference clock provided to the PLL and a feed... | 05/02/2006 |
| 7034562 | Oscillation detecting apparatus and test apparatus An oscillation detecting apparatus for detecting oscillation of a signal includes a high pass filter for generating an alternating current signal from which a direct current component of the signal is removed, a slicing circuit for generating a limit signal which re... | 04/25/2006 |
| 7002377 | Clock signal detection circuit and semiconductor integrated circuit using the same A clock signal detection circuit is provided that can reliably detect whether or not a clock signal is supplied with a reduced circuit scale and reduced power consumption. The clock signal detection circuit comprises: a tristate buffer circuit that generates an outp... | 02/21/2006 |
| 7000114 | Apparatus to create and/or verify digital signatures having a secure time element and an identifier of the apparatus In a signature creating apparatus, a clock generates a time stamp and in which time can be set only by a computer installed in a certificate authority center. Further, connecting sections connects an apparatus ID for specifying an apparatus and the time stamp and pe... | 02/14/2006 |
| 6977529 | Differential clock signal detection circuit A semiconductor integrated circuit includes a first clock input and a second clock input to receive elements of a differential clock signal. Each clock signal element has a logic state. The circuit generates an output activation signal that depends on the states of ... | 12/20/2005 |
| 6969859 | Radiation detecting system A radiation detecting system including a radiation detecting section having one or more radiation detecting circuits and a circuit adjustment section for adjusting other circuitry to be protected. Radiation detecting circuits are provided to detect a pulse of radiat... | 11/29/2005 |
| 6943590 | Clock monitoring apparatus A clock monitoring apparatus according to the invention including a main clock monitoring portion including a first counter for counting a main clock, issuing a normal operation confirming flag indicating that a normal operation is being carried out when the first c... | 09/13/2005 |
| 6943591 | Apparatus and method for detecting a fault condition in a common-mode signal The invention is directed to an apparatus and a method for generating a fault detection signal when a differential signal is in a fault condition. The fault condition arises when the data transmission path in a differential signaling device is either open, shorted, ... | 09/13/2005 |
| 6931087 | Feedforward clock switching circuit A clocking circuit includes primary and secondary clock sources. These sources are input to a multiplexer which selectively chooses between them. A PLL stabilizes the output of the multiplexer. A clock detection circuit monitors the presence of the primary clock sou... | 08/16/2005 |
| 6891401 | Clock loss detection and switchover circuit In one aspect, an embodiment provides a clock loss sense and switchover circuit and method in which clock switchover is responsive to loss of a primary signal and to additional switch command signaling. In another aspect, an embodiment provides a clock loss sense ci... | 05/10/2005 |
| 6873190 | Apparatus for sensing the presence of an inductive load driven by a pulse width modulated signal A circuit for sensing the presence of an inductive load that is particularly applicable to sensing when a solenoid is being driven by a pulse width modulation (PWM) signal. The circuit includes a high side connected transistor having an output driving a load, with t... | 03/29/2005 |
| 6785354 | Lock detection system for use in high speed communication systems A lock detection method for generating a lock signal including providing a data signal and a clock signal to a clock detection unit, the data signal being describable by an eye pattern, the data signal and the clock signal being in lock when a data transition occurs... | 08/31/2004 |
