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| Patent # | Description |
|---|---|
| US-5,581,654 |
Method and apparatus for information encoding and decoding Pre-echo in the encoding and encoding of digital audio signals is diminished by utilizing a frequency dividing circuit for dividing the input audio signals into... |
| US-5,581,653 |
Low bit-rate high-resolution spectral envelope coding for audio encoder
and decoder A split-band encoder prepares an estimate of an input signal spectral envelope by splitting the input signal into frequency subband signals, generates a scaled... |
| US-5,581,652 |
Reconstruction of wideband speech from narrowband speech using codebooks A wideband speech signal (8 kHz, for example) of high quantity is reconstructed from a narrowband speech signal (300 Hz to 3.4 kHz). The input narrowband speech... |
| US-5,581,651 |
Speech signal decoding apparatus and method therefor A speech signal decoding apparatus includes a decoding section, an error check section, a data memory, a white noise generating section, a switch group, and a... |
| US-5,581,650 |
Learning dynamic programming This dynamic programming includes a learning mode and an evaluation mode. In the learning mode, an accumulated DP path matrix is determined by a DP matching... |
| US-5,581,649 |
Fixed value fiber optic attenuator with index matching material A fiber optic attenuator having a predetermined, fixed attenuation value and low back reflection properties across a broad wavelength spectrum is disclosed.... |
| US-5,581,648 |
Optical fiber probe for monitoring fluid medium A probe for monitoring a fluid medium employing at least one fiber optic emitting a wave into the fluid medium. The fluid medium scatters or causes luminescence... |
| US-5,581,647 |
Method of fabricating dispersion compensation fiber In a method of fabricating DCF, the fiber is drawn while rotating said optical fiber preform, wherein a rotational speed of said optical fiber preform is 10 to... |
| US-5,581,646 |
Method of coupling optical parts and refractive index imaging material A method of coupling optical parts including bonding the optical coupling faces of two optical waveguides by butting and fusing them. Also, a method for forming... |
| US-5,581,645 |
Plug connection for optical waveguides which prevents unintentional
contact The invention relates to an optical waveguide plug for plug connections between optical waveguides (12). Conventional plugs have the disadvantage that a fitter... |
| US-5,581,644 |
Transmission line switching apparatus There is disclosed a transmission line switching apparatus comprising a coupling board having a first surface adapted to be connected a first line and a second... |
| US-5,581,643 |
Optical waveguide cross-point switch An optical waveguide cross-point switch capable of full broadcast and strictly non-blocking operation. The device has a matrix of a plurality of input waveguides... |
| US-5,581,642 |
Optical frequency channel selection filter with
electronically-controlled grating structures Optical energy transfer devices and energy guiding devices use an electric field to control energy propagation using a class of poled structures in solid... |
| US-5,581,641 |
Optical fiber multiport apparatus for detecting phase shifts A coherent detector which is insensitive to signal or polarization state may be assembled using a fused optical fibre multiport constructed from five optical... |
| US-5,581,640 |
Dual stage optical device with low polarization mode dispersion and
wavelength insensitivity The present invention provides for a two-stage optical isolator with reduced polarization mode dispersion. Each stage has two birefringent polarizers separated... |
| US-5,581,639 |
Raman-nath diffraction grating An optical wavelength selective device is provided that is particularly useful as a demultiplexer. The device is made from a planar slab optical waveguide... |
| US-5,581,638 |
Method for autonomous image registration A method for automatically registering an image pair having a common coverage area, wherein a pair of image data sets, each representing an image of an image... |
| US-5,581,637 |
System for registering component image tiles in a camera-based scanner
device transcribing scene images A device for registering component image tiles in a scanning system for transcribing, into electronic form, markings on a two-dimensional surface such as a... |
| US-5,581,636 |
Method and system for transformed target image acquisition A concentric ring target detector receives input pixel data from an optical scanning device. The pixel data represents images on a conveyor belt and moving... |
| US-5,581,635 |
Method and system for fast rotation of run-length encoded images A method and system including a high speed computer algorithm for rotating images stored in a computer memory, such as those captured by a CCD array. The method... |
| US-5,581,634 |
Recognition system with an automated development tool A recognition system that includes a development subsystem and production subsystem is disclosed. The development subsystem includes a user interface that... |
| US-5,581,633 |
Method and apparatus for segmenting a character and for extracting a
character string based on a histogram In a character segmenting apparatus the extracting section extracts the character segment pattern on the basis of the connection data imparted to the segment... |
| US-5,581,632 |
Method and apparatus for ball bond inspection system The invention automatically inspects the bond of a wire to a contact pad on a semiconductor chip. The apparatus includes a movable platform for holding... |
| US-5,581,631 |
Cytological system image collection integrity checking apparatus An automated apparatus for checking cytological system image collection integrity in an automated cytological system including an imaging apparatus controlled by... |
| US-5,581,630 |
Personal identification A portable optical media imaging system for use in personal identification includes: a portable optical media card (13); an optical reader (34), having circuitry... |
| US-5,581,629 |
Method for estimating the location of an image target region from
tracked multiple image landmark regions An image processing method for inserting a given pattern at a target region having a particular location with respect to a scene being viewed by an image sensor... |
| US-5,581,628 |
Characters reading apparatus having collating means of envelope A character reading apparatus including functions for storing size information of an object to be read, an inherent image included in the object, and position... |
| US-5,581,627 |
Convertible cover headphones A band having opposed ends and adapted for spanning the head of a user between opposed ears, with each end of the band including an ear phone mounted in a base... |
| US-5,581,626 |
Automatically switched equalization circuit A circuit in which, when loudspeakers are being used by themselves, the equalization to the loudspeakers is optimized for full range operation and only the... |
| US-5,581,625 |
Stereo vision system for counting items in a queue A number of items present in a substantially linear queue are counted by examining two images of a scene including the queue that are taken from vantage points... |
| US-5,581,624 |
Loudspeaker suitable for high-temperature use having a non-adhesive
connection between the voice coil support... In the state of the art, most loudspeaker diaphragms 10 and the voice coil supports 11 are joined by adhesives. However, even high-grade adhesives fail if such... |
| US-5,581,623 |
Electroacoustic transducer and method of fabricating the same The present invention provides an electroacoustic transducer and a method of fabricating the same, employing a lead frame to integrally form a plurality of... |
| US-5,581,622 |
Head set The present invention provides a head set capable of improving a sense of comfort when being put on, realizing an easier attaching and detaching operation, and... |
| US-5,581,621 |
Automatic adjustment system and automatic adjustment method for audio
devices A system for automatically adjusting an audio system with a programmable parametric equalizer includes an audio analysis unit that can be connected to the audio... |
| US-5,581,620 |
Methods and apparatus for adaptive beamforming Methods and systems for beamforming are disclosed that include a signal processor that can dynamically determine the relative time delays between a plurality of... |
| US-5,581,619 |
Vehicle internal noise reduction system and method In the noise reduction system to attenuate vehicle internal noise sounds by means of generating a canceling sound synthesized with an engine-originated vibration... |
| US-5,581,618 |
Sound-image position control apparatus In order to obtain a sound-broadened image and a clear sound-image discrimination image when producing plural kinds of sounds, the electronic musical instrument... |
| US-5,581,617 |
System for short-range transmission of signals over the air using a high
frequency carrier A system is provided which transmits either analog or digital data signals over the air. The system includes a transmitter and a receiver. The transmitter and... |
| US-5,581,616 |
Method and apparatus for digital signature authentication The present invention improves speed and reduces complexity in a digital signature scheme that uses elliptic algebra. The signature scheme generates two points... |
| US-5,581,615 |
Scheme for authentication of at least one prover by a verifier A new procedure for authentication of at least one prover by a verifier, the authentication being based on public and secret key cryptographic techniques and... |
| US-5,581,614 |
Method for encrypting and embedding information in a video program Apparatus and methods are provided for encrypting and decrypting information having a header portion and a body portion. The decrypting method includes the steps... |
| US-5,581,613 |
Color image processing apparatus and method An image processing system has an external image processing apparatus and an image input/output apparatus. One of the apparatuses acts as a transmission-side... |
| US-5,581,612 |
Private branch exchange system In a private branch exchange system which includes a private branch exchange accommodating a plurality of line wires and extensions for switching lines between... |
| US-5,581,611 |
Method for controlling advanced-function universal personal
telecommunication services An exchange control portion and a service control portion are provided on the exchange network side. The service control portion is provided with a PTN... |
| US-5,581,610 |
Method for network traffic regulation and management at a mediated
access service control point in an open... A method of regulating and managing network traffic at a mediated access service control point in an advanced intelligent switched telephone network that allows... |
| US-5,581,609 |
ISDN terminal A transferring method from an ISDN telephone to an ISDN data terminal comprises the steps of: transmitting a message to request a temporary interruption of a... |
| US-5,581,608 |
Method and apparatus for masking the reporting of network telephony
events to a computer A method apparatus for selectively passing various types of telephony information between a data communications port on a digital telephone and a computer run... |
| US-5,581,607 |
Customized, billing-controlled call bridging system Method and apparatus for providing customized, billing-controlled call bridging services through a bridging node which includes a node interface for connection... |
| US-5,581,606 |
Dat storage back-up and modem apparatus A streamer apparatus for transferring data between a first storage device of a computer system, which has serial interface transmit and receive ports for... |
| US-5,581,605 |
Optical element, production method of optical element, optical system,
and optical apparatus An optical element for X-ray reflection according to the present invention is provided with a number of fine convex surfaces or concave surfaces regularly... |
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