Did You Know...
...that after Walter Hunt patented the safety pin in 1849, he sold the rights to it for $400?
PatentStorm News
Make the Most of Our Site
See this month's Top Inventors and Most Cited Patents.
Stay on top of the latest innovations by subscribing to an RSS feed.
Registered users: Manage your profile.
| Number | Title | Issue Date |
| 5861798 | Electrical noise generation circuits for use in conjunction with an electro-acoustic transducer to simulate the sound of burning wood sounds An electrical noise generation circuit for use in conjunction with an electro-acoustic transducer to simulate the sound of burning wood. A small loudspeaker enclosure accommodates a battery driven circuit in which a wideband electrical noise signal is pro... | 01/19/1999 |
| 5596766 | Configurable logic networks A programmable logic device (PLD) and configurable logic network in which one or more logic combination networks (LCN) each receives logic inputs from two or more PLDs (PLD1, PLD2) and generates logic outputs (O, P) which provide inputs to programmable se... | 01/21/1997 |
| 4871231 | Three dimensional color display and system The disclosure relates to a three dimensional color display wherein controlled modulated laser light of predetermined different frequencies is transmitted via fiber optics and combined in a fiber optic coupler to provide a combined light beam. This light ... | 10/03/1989 |
| 4870474 | Lead frame A lead frame composed of an outer frame and inner lead frame portions formed as an integral frame wherein each lead frame portion directly joins the outer frame at some of the four corners of the lead frame portion with circuitous bridges interposed for f... | 09/26/1989 |
| 4868871 | Nonparametric imaging tracker A nonparametric imaging tracker is disclosed that first declares (10) a reference subimage comprising a plurality of image pixels, each pixel having a numerical light intensity level. The tracker then finds (12) a reference distribution of intensity level... | 09/19/1989 |
| 4868755 | Expert vehicle control system An automatic control system for an aircraft has a first controller connected to the pilot's operating controls. The first controller manipulates the operating controls so that goals, expressed in terms of selected aircraft parameters, are achieved. A seco... | 09/19/1989 |
| 4868741 | Computer bus deadlock prevention A digital computing system includes at least a first and a second bus with at least a first master connected to the first bus and a second master connected to the second bus. The first master is capable of requesting the second bus through the first bus a... | 09/19/1989 |
| 4868765 | Porthole window system for computer displays A porthole window system for computer displays allows a user to look at a portion of a window which could otherwise not be seen. A porthole window acts as an opening in a window of the usual type through which underlying windows may be seen. A porthole wi... | 09/19/1989 |
| 4864628 | Method of optical character recognition A method for recognizing and providing an output corresponding to a character is disclosed. The character is received by an imager, digitized and transmitted to a buffer memory. Data in the buffer memory is read in a sequence which circumnavigates the tes... | 09/05/1989 |
| 4862413 | Semiconductor ROM with reduced supply voltage requirement A memory device including a voltage stepdown circuit is proposed in which a reduced reference voltage is produced from a supplied reference voltage and is passed to the selected one of the row lines of the memory array after all the row lines are discharg... | 08/29/1989 |
| 4857780 | High withstand voltage output A high withstand voltage output circuit has a pull-up constant current source and transistor connected in series between the grounding side and supply voltage side wherein the breakdown voltage of the constant current source is set higher than the pinch-o... | 08/15/1989 |
| 4858167 | Parallel binary adder having grouped stages including dynamic logic to increase carry propagation speed A binary adder circuit is described using dynamic transistor logic in which for high speed carry propagation the adder stages are grouped in pairs or larger numbers and additional dynamic logic means is provided in each group to control a single transisto... | 08/15/1989 |
| 4855798 | Semiconductor and process of fabrication thereof A semiconductor device having a salicide (self-aligned silicide) configuration and operable as, for example, a dynamic RAM device is fabricated by preparing a semiconductor substrate, forming a layer of silicon in, on or over the semiconductor substrate, ... | 08/08/1989 |
| 4853564 | GaAs monolithic true logarithmic amplifier A GaAs monolithic true logarithmic amplifier which includes at least one amplifier stage common to the two arms of the circuit, the two arms being independent thereafter, one having lower gain and higher compression point and the other arm having higher g... | 08/01/1989 |
| 4849248 | Ion implantation method for making silicon-rich silicon dioxide film A silicon dioxide film containing additional silicon in the form of segregates having controlled grain sizs is fabricated by forming a silicon dioxide, injecting silicon ions into the silicon dioxide film by ion implantation with a predetermined ion accel... | 07/18/1989 |
| 4845536 | Transistor structure The invention relates to a field-effect transistor (1;20) with insulated gate electrode (9;30) which comprises in a semiconductor body (5) a drain diffusion zone (2) connected to a drain electrode (6;32) and a source diffusion zone (3) which is disposed s... | 07/04/1989 |
| 4831551 | Speaker-dependent connected speech word recognizer Speech recognition is improved using reference pattern templates which have an added noise signal (noise floor) to avoid LPC high-gain synthesizer instability at low signal levels. Also, input signal frames have a length one-half that of reference frames ... | 05/16/1989 |
| 4831358 | Communications system employing control line minimization A communications system employs a multiline bus including control lines for multiple functions in order to minimize the required number of bus lines. This technique is most applicable to small computer systems which are hand portable or briefcase portable... | 05/16/1989 |
| 4830978 | Dram cell and method The described embodiments of the present invention provide structures, and a method for fabricating those structures, which include a memory cell formed within a single trench. A trench is formed in the surface of a semiconductor substrate. The bottom por... | 05/16/1989 |
| 4831570 | Method of and circuit for generating bit-order modified binary signals A method of and a circuit for generating address signals, wherein a binary index signal and a binary base address signal are stored in index and address registers, respectively, whereupon the index signal and the base address signal are added together to ... | 05/16/1989 |
| 4831569 | Display system for indicating standby operations of electronic data processing apparatus A display system for visually indicating stanby operations belonging to a set of hierarchal processing operations to be carried out by an eletronic data processing apparatus, such as an electronic computing machine, wherein the display system includes a p... | 05/16/1989 |
| 4829431 | Method and apparatus for correlating test information A method and apparatus for storing a relationship between individual elements of two or more knowledge sets includes a main computer (12) that is operable to receive a portable memory cartridge (20). The computer (12) has an input keypad (16), a storage m... | 05/09/1989 |
| 4825390 | Color palette having repeat color data The present invention involves an improvement in color palettes which translate pixel color codes into color data words which have differing bits. In the color palette a stream of pixel color codes from a pixel map memory enables sequential selection of o... | 04/25/1989 |
| 4823311 | Calculator keyboard with user definable function keys and with programmably alterable interactive labels for certain function keys Calculator having a keyboard in which one or more keys have labels created by a display and subject to changing interactively as the user desires. Typically, advanced scientific-programmable calculators may have too many functions to be adequately include... | 04/18/1989 |
| 4819164 | Variable frequency microprocessor clock generator A microprocessor based system (10) includes a central processing unit (CPU) (12) that controls the operation of a display (20) through a controller (22). System storage is provided with a read only memory (16) and random access memory (14). A reference cl... | 04/04/1989 |
| 4818900 | Predecode and multiplex in addressing electrically programmable memory An electrically programmable memory array having rows and columns of floating gate type memory cells employs alternate output lines and ground lines between the columns of cells, providing a virtual ground arrangement. A row is selected by one part of an ... | 04/04/1989 |
| 4815134 | Very low rate speech encoder and decoder A speech encoder is disclosed quantizing speech information with respect to energy, voicing and pitch parameters to provide a fixed number of bits per block of frames. Coding of the parameters takes place for each N frames, which comprise a block, irrespe... | 03/21/1989 |
| 4811344 | Device for the testing and checking of the operation of blocks within an integrated circuit Device for the testing and checking of the operation of blocks within an integrated circuit, characterized in that it is formed from a set of shift registers and logic circuits associated with each block of the circuit to be tested, the set of registers i... | 03/07/1989 |
| 4810948 | Constant-voltage regulated power supply circuit A constant-voltage regulated power supply circuit has an input circuit and an output circuit. The sense circuit includes a programmable sense circuit that further includes a divider network with a plurality of selectable tap points and a multiplexer havin... | 03/07/1989 |
| 4811400 | Method for transforming symbolic data The specification discloses a method of transforming input symbolic data to output symbolic data for use in text-to-speech and other environments. A string of digital byte values representing the input symbolic data is stored in a first buffer memory loca... | 03/07/1989 |
| 4808857 | Sense amplifier circuit for switching plural inputs at low power A sense amplifier circuit is described for switching plural inputs at high speed. At least two transistors for providing at least two true input signals are connected in parallel and have their source terminals connected to a common node from which an out... | 02/28/1989 |
| 4806498 | Semiconductor charge-coupled device and process of fabrication thereof A semiconductor charge-coupled device is fabricated with use of a layer of a doped semiconductor having an insulator layer thereon. Suitable dopant ions such as nitrogen or argon ions are implanted into the doped semiconductor layer so that the projected ... | 02/21/1989 |
| 4802223 | Low data rate speech encoding employing syllable pitch patterns The present invention is a speech encoding technique useful in low data rate speech. Spoken input is analyzed to determine its basic phonological linguistic units and syllables. The pitch track for each syllable is compared with each of a predetermined se... | 01/31/1989 |
| 4799146 | System for displaying graphic information on video screen employing video display processor A system which interprets the contents of address and data fields provided by a central processing unit 1 which controls the display. The address fields are selectively interpreted to obtain a direct access by the central processing unit to a general syst... | 01/17/1989 |
| 4799261 | Low data rate speech encoding employing syllable duration patterns Speech is analyzed for phonological linguistic units (phonemes or allophones), along with their duration pattern and pitch pattern contour as a group or string of a syllable. The patterns are encoded as the best-match pattern in a set of prestored standar... | 01/17/1989 |
| 4799053 | Color palette having multiplexed color look up table loading The present invention loads color registers of a color look up table in a color palette and recalls color data words from the color registers using only a single set of address and data channels. The color palette operates in two modes. In a normal mode o... | 01/17/1989 |
| 4797725 | Memory cell for SRAM with a dielectric layer over a gate electrode to provide a parallel resistive and capacitive element A static memory cell including a pair of field-effect transistors, characterized by the provision of highly dielectric layers in combination with the field-effect transistors, wherein each of the highly dielectric layers is located directly on a polysilic... | 01/10/1989 |
| 4797930 | constructed syllable pitch patterns from phonological linguistic unit string data The present invention provides an artificial pitch contour to phonological linguistic phoneme unit string data. In the event that the phonological linguistic string data includes some information on intonation contour, such as primary accent, secondary ac... | 01/10/1989 |
| 4796216 | Linear predictive coding technique with one multiplication step per stage A digital filter for synthesized speech includes a full adder (72) that is multiplexed to perform multiplication and addition/subtraction operations. The inputs of the adder (72) are multiplexed by multiplexers (90) and (92). The adder (72) calculates Y-v... | 01/03/1989 |
| 4792835 | MOS programmable memories using a metal fuse link and process for making the same A process for making a metal fuse link in a MOS or CMOS process which includes depositing a refractory metal or metal alloy over an already deposited multi-level oxide and patterning the deposited metal or metal alloy so that it has a fusing segment betwe... | 12/20/1988 |
