Class 341/177 - Producing different pulse frequencies

Subclass of Class 341 - Coded data generation or conversion
Definition: Subject matter which generates coded pulses of different
No. of patents: 22
Last issue date: 09/16/2008

Number	Title	Issue Date
7425915	Frequency modulation based flash ADC An analog-to-digital converter converts a frequency-modulated signal into a digital signal. The frequency-modulated signal is supplied to multiple comparators, such as low-pass filters, which determine whether the signal falls within their frequency ranges. The outp...	09/16/2008
7356141	Baud rate modulation encoding/decoding method and device for remote controller A encoding/decoding method and device for a remote controller utilizing a baud rate to encrypt data for transmission. The encoding device includes an encoder encoding an identification code into an encrypted code; and an interpreter interpreting the un-encoded porti...	04/08/2008
7265700	Method and apparatus for extracting individual pulses from an input signal Digital samples corresponding to a pulsed input signal are provided from an ADC to a memory for storage and to a pulse extraction circuit. The pulse extraction circuit detects the leading and trailing edges of pulses in the input signal. The digital samples are stor...	09/04/2007
7107212	Bitstream data reduction coding by applying prediction A data processing apparatus for data processing an audio signal includes an input terminal (1) for receiving the audio signal, a 1-bit A/D converter (4) for A/D converting the audio signal to for a bitstream signal, a prediction unit (10) for ca...	09/12/2006
7075995	Three-order sigma-delta modulator A three-order sigma-delta modulator having a feedback and a feedforward configuration. The three-order sigma-delta modulator includes: an analog-to-digital converter; a digital-to-analog converter; a first integrating network; a second integrating network connected ...	07/11/2006
7049995	Method and apparatus for remote control transmission A remote control is operative to transmit a remote control signal composed of a first portion and a second portion. The first and second portions are typically a pulse and a space. The pulse has a pulse width of a given duration within a pulse width range, while the...	05/23/2006
6972945	Modular computer device and computer keyboard for modular device A keyboard for a computer receptive to a modular or other device, and a modular touch screen device having at least one changeable virtual key, are described. The keyboard includes a connector receptive to a corresponding connector of a device such as a personal dig...	12/06/2005
6853326	Data converter A a converter has a head part (1), which can be connected to an external data bus, and one or more connection modules (2), which can be connected to it by way of plug-in mounting in the form of rows. The head part (1) has a plug-in connection (	02/08/2005
6757276	Touch tone replacement for internet telephony Tones that are generated by a telephone or PC (such as DTMF tones) and subject to loss or noise during generation or during transmission along a medium are detected and replaced with substantially noise-free and distortionless digital signals. In one embodiment, the...	06/29/2004
6396431	Precision microwave/millimeter wave modulated signal source The precision microwave/millimeter wave modulated signal source is a relatively low cost, compact, highly accurate and stable signal source covering the 2 to 40 Gigahertz frequency range. The pulse width and amplitude level of the output signal can be cha...	05/28/2002
5866956	Apparatus for and method of monitoring and controlling a power system A apparatus for monitoring and controlling a power system having an alternating current bus. The apparatus includes a module which is coupled to the bus and which digitizes and modulates at least one of a voltage waveform and a current waveform present on...	02/02/1999
5815109	Transmitter/receiver module of cordless keyboard assembly A transmitter/receiver module of cordless keyboard assembly adapted to be received and fixed inside a disk driver slot provided on the front panel of a computer casing is disclosed, including a frame sized to be received within the disk driver slot, havin...	09/29/1998
5790066	Remote control transmission circuit A remote control transmission circuit for generating a multicarrier under control of a single microcomputer. This transmission circuit is arranged so as to allow reduction of the number of the program commands and making it easy to perform a different pro...	08/04/1998
5670958	Remote control method and device The present infra-red remote control transmitter understands external formats, and those with toggle-bits and different carrier frequency ranges, and transmits signals in these data formats to the appropriate devices, with or without a toggle-bit. The rem...	09/23/1997
5565861	Multidigit counting wheel mechanism for a volume-measuring instrument Multidigit counting wheel mechanism for a volume-measuring instrument. An absolute encoder for a measuring instrument includes a mechanical counting wheel mechanism consisting of five sensors, mounted in a plane perpendicular to a counting mechanism axle,...	10/15/1996
5454006	Method and apparatus for bandwidth limited binary signals In a method for limiting the bandwidth of a selected binary signal (B), there is produced a modulated digital signal (D) which presents a continuous series of changes in signal level. The two occurrent logic states (1,0) are each represented by a respecti...	09/26/1995
5128677	Apparatus and method for transferring data along a serial data bus An apparatus and method are disclosed for transferring data between devices located on a serial data bus of a data communication system. A first counter and flag are provided which are associated with a device on the serial data bus. The first counter and...	07/07/1992
4661804	Supervised wireless security system Apparatus and method for communication by use of a single FM radio frequency, from a plurality of transmitters to a central receiver in a security alarm system or similar system. A transmitter's radio frequency signal is modulated in wide frequency swings...	04/28/1987
4378552	Acoustic encoding apparatus Encoding apparatus for a business machine includes a resilient striker for inducing diverging sound waves within a rod by impact with it at a given location. Transducers positioned along the rod on each side of the striker and at unequal distances from it...	03/29/1983
4311991	Acoustic transmission member An acoustic transmission member is disclosed for use in an encoding system utilizing acoustic energy wherein diverging sound waves are induced within the member in response to selected actuation of a striker positioned along the member. The time taken by ...	01/19/1982
4229731	Monolithic integrated organ gate circuit This invention concerns a monolithical integrated organ gate circuit showing a load resistance common to all audio signal currents. For the suppression of any bounces possibly occurring upon the operation of a second key after a first one, there is a rest...	10/21/1980
4079355	Method for the transmission of binary information by means of a frequency-modulated signal and a circuit for performing that method A transmission of a binary signal which transmission is immune to interference is obtained by transmitting the bits of the binary signal by means of a frequency-modulated signal in which a cycles of a first frequency f1 are followed by b cycles...	03/14/1978

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Class 341/177 - Producing different pulse frequencies