Patents Assigned to ITT
-
Patent number: 4897563Abstract: An N-way redundant switch is implemented through the use of serial and parallel redundancy for providing redundancy in both ON and OFF operating modes.Type: GrantFiled: August 1, 1988Date of Patent: January 30, 1990Assignee: ITT CorporationInventor: Inder J. Bahl
-
Patent number: 4897878Abstract: A method and apparatus for noise suppression for speech recognition systems which employs the principle of a least means square estimation which is implemented with conditional expected values. Essentially, according to this method, one computes a series of optimal estimators which estimators and their variances are then employed to implement a noise immune metric. This noise immune metric enables the system to substitute a noisy distance with an expected value which value is calculated according to combined speech and noise data which occurs in the bandpass filter domain. Thus the system can be used with any set of speech parameters and is relatively independent of a specific speech recognition apparatus structure.Type: GrantFiled: August 26, 1985Date of Patent: January 30, 1990Assignee: ITT CorporationInventors: Steven F. Boll, Jack E. Porter
-
Patent number: 4896358Abstract: An automatic speech recognition system employs parallel syntaxes with a first syntax operative to compare keyword templates with incoming speech over a given time interval and with a second syntax in parallel with the first and operative to compare filler templates with incoming speech over the same interval. Based on the best comparisons in each syntax a likelihood probability ratio is computed and compared against a selected threshold for determining whether the speech contains a valid phrase or keyword as compared to an undesirable utterance.Type: GrantFiled: March 17, 1987Date of Patent: January 23, 1990Assignee: ITT CorporationInventors: Lawrence G. Bahler, Alan L. Higgins
-
Patent number: 4893001Abstract: A credit card type small thin rectangular IC card has a battery and an IC comprising a CPU, a ROM and a RAM mounted on a flexible printed circuit and bonded within an insulative plastic material. The printed circuit of the card has a plurality of electrode terminals exposed in a parallel array along at least one edge of the card which are adapted to engage contacts of a mating socket. The printed circuit terminals are manufactured by coating copper, nickel and gold over polyamide resin and squeeze finishing the leading edge. The mating socket comprises a general U-shaped frame having a U-shaped channel adapted to receive the IC card and having internal recessed contacts adapted to engage the terminals of the IC card. The contacts extend from an exterior surface of the frame for interconnection with the circuits of a mating device. Downwardly projecting portions thereof are bent at least twice in the portion penetrating the bottom of the frame.Type: GrantFiled: January 17, 1989Date of Patent: January 9, 1990Assignee: ITT CorporationInventors: Isao Ohkubo, Shintaro Aiba
-
Patent number: 4893122Abstract: A parallel analog to digital converter and a method of processing at least two independnet signals therein are disclosed in accordance with the teachings of the present invention. The analog to digital converter has an improved sample and hold stage which, in addition to quantizing the analog signals, also multiplexes them. The sample and hold stage comprises at least two differential amplifier circuits, a latch stage, and a timing stage. Each differential amplifier circuit converts one analog input by comparing it to a reference voltage. The discrete output of the differential amplifier circuit is stored in the latch stage and outputted to an encoder. The timing circuit stage first selects one differential amplifier circuit to output its discrete signal, and then selects the latch stage to output its stored results. By sequencing through each differential amplifier circuit, the present invention effectively multiplexes the analog inputs.Type: GrantFiled: November 25, 1988Date of Patent: January 9, 1990Assignee: Deutsche ITT Industries GmbHInventor: Wolfgang Hoehn
-
Patent number: 4890933Abstract: A method of accurately determining the temperature of a thin layer of bandgap material without requiring contact to the layer involves the use of optical radiation through the layer and the detection of optical absorption by the layer. The relationship between the temperature varying bandgap energy and the resulting optical absorption characteristics provides an indication of temperature independent of ambient temperature. Apparatus for performing high quality temperature detection and control is also provided.Type: GrantFiled: February 17, 1988Date of Patent: January 2, 1990Assignee: ITT CorporationInventors: Avraham Amith, Charles Naselli, C. Scott Nevin
-
Patent number: 4890327Abstract: An analog to digital converter for a speech signal is implemented in modules to allow for changes in bit rate and changes in bit stream length according to requirements of the digital transmission system. A pre-emphasis circuit provides an array of pre-emphasized speech samples which are stored in memory. A linear predictive coder provides an array of reflection coefficients and an array of filter coefficients. A pulse processor receives the speech samples and filter coefficients and generates speech amplitude and location signals. These signals are multiplied to generate quantized speech samples. The quantized speech samples and reflection coefficients are provided to a buffer which provides an output signal of a proper bit stream length and bit rate for the digital transmission system.Type: GrantFiled: June 3, 1987Date of Patent: December 26, 1989Assignee: ITT CorporationInventors: John Bertrand, Matthew J. Noah
-
Patent number: 4888518Abstract: A structure associated with a ceramic envelope gas filled electron tube whereby a series of concentric holes are formed through grid radiator rings which thus simulates the outer neutral gas region of a typical glass envelope tube structure. In this manner, one has created a neutral non-ionized gas flow path which shunts the main discharge in such a thyratron and which is contained within the metal internal axial structure. The apertures, as formed in the grid radiator rings, thereby provide a source path for neutral molecular hydrogen from the gas reservoir located at the base of the tube to allow the gas to be directed to the anode/grid region of the tube, where electrons are pumped and the gas is collisionally ionized. The effect serves to enhance the maximum thyratron operating frequency by allowing cool neutral gas molecules to flow into the gap region through the parallel path and then into the discharge volume of the ceramic thyratron tube.Type: GrantFiled: November 16, 1987Date of Patent: December 19, 1989Assignee: ITT CorporationInventor: Henry C. Grunwald
-
Patent number: 4887631Abstract: A fire isolation device having a valve designed to close after a given temperature has been reached by a fusible nose member in the form of a sleeve of fusible material. The device has a passageway therethrough and a self-closing valve member having a poppet and a seat disposed in the passageway with the poppet being biased toward the seat to a valve closed position. At least one aperture through the nose member provides for continuous fluid flow through the device around the poppet and the seat. The nose member is positioned to hold the valve in an open position against the bias on the poppet. The seat has a flow path on its outer end dimensioned to fit the nose member and a flow path towards its inner end larger in diameter than the nose member in an area occupied by the aperture to permit flow therethrough when the nose member holds the valve in an open position. The nose member is made of a material designed to melt in the neighborhood of 700.degree. F. when the fire isolation device is exposed to 2000.Type: GrantFiled: January 26, 1989Date of Patent: December 19, 1989Assignee: ITT CorporationInventors: Alden E. Friend, Lawrence A. Dunham
-
Patent number: 4887853Abstract: A unitary assembly of tubing and an end fitting. The end fitting comprises a threaded fastener fitting having a tubular bore extending therethrough. An undercut annular groove is coaxially provided in the wall portion of the tubular bore which is spaced apart from the end of the fitting. The opening of the tubular bore at the end of the fitting is provided with an undercut counterbore. The end of the tubing is inserted through the opening and into the tubular bore until it engages a stop formed by a reduced diameter portion of the tubular bore at the axially inward end of the undercut annular groove. A ball mandrel is inserted through the opening at the other end of the tubular bore to engage and force the end portion of the tube into the undercut annular groove. A braze ring is inserted into the undercut counterbore the latter of which allows a braze fillet to form during the brazing operation.Type: GrantFiled: August 28, 1987Date of Patent: December 19, 1989Assignee: ITT CorporationInventors: Charles V. Flowers, Bernard J. Sass
-
Patent number: 4884403Abstract: A modular brake actuator useful in automotove vehicles includes a mounting base adapted to fit into a complementary opening in and form part of the fire wall between the engine compartment and the driver's cockpit. On one side of the mounting base there are assembled brake operating components and on the other side there are assembled hydraulic components. This module can be easily installed during assembly of the vehicle.Type: GrantFiled: July 21, 1988Date of Patent: December 5, 1989Assignee: ITT CorporationInventor: James L. Weber
-
Patent number: 4882297Abstract: In fabricating the contact, the electrode layer of polycrystalline silicon whose rim portion is bonded via a layer portion of insulating material to the substrate, is used at least throughout the length of a part of its rim portion for the lateral delimitation of a etching process, as an etch mask, in the course of which a frame-shaped layer portion is formed underneath the rim portion of the electrode layer, and the contact area of the substrate as bordering on the layer portion is exposed. Following the deposition of a metal layer of a metal forming a silicide in a thickness smaller than the thickness of the layer portion, and the heating for forming the silicide, the metal which has so far not reacted with the silicon, is removed by using an etching agent selectively dissolving the metal.Type: GrantFiled: June 13, 1988Date of Patent: November 21, 1989Assignee: Deutsche ITT Industries GmbHInventor: Lothar Blossfeld
-
Patent number: 4882610Abstract: In this protective arrangement, a resistor between a pad (p) and a transistor to be protected is implemented with an expansion region (e) which lies completely below the pad (p) and extends beyond the latter along the entire circumference of the pad. An elongate region (z) extends along the circumference of the expansion region (e) and is connected to circuit ground via an interconnection track (b). The connection between the elongate region (z) and the interconnection track (b) has a low resistance.Type: GrantFiled: October 6, 1988Date of Patent: November 21, 1989Assignee: Deutsche ITT Industries GmbHInventors: Ulrich Theus, Burkhard Giebel
-
Patent number: 4879783Abstract: As to a reciprocating stroke wiper system for motor vehicles with a piston movably guided in a housing a projecting arm unrotatably fixed to the piston and comprising a guiding fork is provided as a protection against twisting, which projecting arm is guided along a guiding element fixed to the housing. According to the invention a rod with circular cross-section is used as a guiding element, which rod is arranged at an angle towards the axis of the piston so that the guiding areas of the guiding rod and of the guiding fork touching each other are displaced crosswise to them during the motion so that the effective guiding area is enlarged and thus wear is reduced.Type: GrantFiled: June 30, 1988Date of Patent: November 14, 1989Assignee: ITT SWF Auto-Electric GmbHInventors: Bruno Egner-Walter, Eckhardt Schmid, Wolfgang Scholl
-
Patent number: 4878880Abstract: Clutch apparatus having a rotary inner member with axially extending flexible members that engage complimentary cavities in an outer rotary member. When a predetermined value of torque is exceeded, the flexible members slip in the cavities of the outer member.Type: GrantFiled: November 16, 1988Date of Patent: November 7, 1989Assignee: ITT CorporationInventor: Jack L. Williams
-
Patent number: 4877186Abstract: A windshield washing system for motor vehicles is described in which a non-return valve is installed into the feed pipe, which non-return valve, for ensuring a quick response from the washing system, prevents the feed pipe from emptying, while the pump is switched off. According to the invention a bypass switchable via a valve runs parallelly to this non-return valve, which bypass is opened in winter, i.e. in low outdoor temperatures, but is closed in summer. Consequently during winter mode of operation the feed pipe is emptied. Thus the washing liquid is prevented from freezing.Type: GrantFiled: June 30, 1988Date of Patent: October 31, 1989Assignee: ITT SWF Auto-Electric GmbHInventor: Wolfgang Scholl
-
Patent number: 4876546Abstract: Doppler shift generator for use in electronic countermeasures equipment includes analog memory devices which are comprised of acoustic charge transport (ACT) memory devices. Such Doppler shift generators includes a switch which alternately applies an input signal to said first and second analog memory devices. Each analog memory device is responsive to a clock signal to sample data at a first frequency and to output the data at a second frequency. As a result, a Doppler shifted signal is generated whose frequency has been shifted by the difference in the first and second frequencies.Type: GrantFiled: October 11, 1988Date of Patent: October 24, 1989Assignee: ITT CorporationInventor: Charles B. Koerner
-
Patent number: 4876545Abstract: There is disclosed an interface apparatus which enables a radar jamming system to operate in conjunction with a number of different radar warning receivers. The interface enables the jamming apparatus to couple to various types of radar warning receivers and to specify proper blanking intervals for each of the receivers according to the type of blanking required and the operation of such receivers. The system employs a look-through blanking bus which essentially consists of six data lines and a strobe. The data on this bus is fully encoded to provide 64 individual command codes. The command codes are established by the particular RWR and are made available via the interface to the jamming system over a multiplexed bus. This bus operates to initially specify the RWR by determining the various codes which are transmitted by the RWR.Type: GrantFiled: December 24, 1987Date of Patent: October 24, 1989Assignee: ITT CorporationInventors: Christopher M. Carlson, Nicholas Deninno
-
Patent number: 4875715Abstract: A quick connect connector is disclosed. The connector includes a connector housing having a first and a second ends. A first chamber is provided in the housing between the first and the second ends for receiving a sealing member therein. A retaining collar is slidably mounted on the housing between the first and second ends of the housing and includes at least one radially deflectable locking portion thereon. The radially deflectable retaining portion is adapted to engagingly contact a flange portion of a tubing member inserted in the housing to retain the tubing member in a locked position relative to and sealingly engaging the sealing member between the retaining portion and the first end of the housing. The locking portion is received within a groove of the housing to lock the collar to the housing and secure the connection. The tubing connector is resiliently urged out from the housing and against the engaged retaining portion of the housing.Type: GrantFiled: April 22, 1988Date of Patent: October 24, 1989Assignee: ITT CorporationInventors: Robert D. Dennany, Jr., Duane J. Pontbriand
-
Patent number: 4875050Abstract: A Doppler matched binary pulse compressor having means to initiate operation, means to generate a Doppler matched filter bank, means to compress the pulses from the Doppler matched filter, either linear or soft limited, means to estimate the signal phase in real time and means to select overall optimal filters in real time. The foregoing includes a phase estimator having a quadrant detector and means to scale the quadrature components while preserving the signal phase, means to reduce accuracy computations to 45.degree. or less of the first quadrant, and means to reconstruct the phase to place the signal in the proper quadrant.Type: GrantFiled: February 12, 1988Date of Patent: October 17, 1989Assignee: ITT Gilfillan, a division of ITT CorporationInventor: Dev D. Rathi