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| Number | Title | Issue Date |
| 6931058 | Method and apparatus for the compression and/or transport and/or decompression of a digital signal A method is described for compressing and/or transporting and/or decompressing a digital signal. The most significant bits of a sample of the digital signal are compressed and transported as a compressed transport sample. Methods are used to improve the compression ... | 08/16/2005 |
| 6769133 | Termination circuitry for dual forward and reverse test points for amplifiers A communication system (100) processes forward signals generated by headend equipment (105) and reverse signals generated by subscriber equipment (135). A communication medium (110, 120), such as fiber optic cable or coaxial cable, connec... | 07/27/2004 |
| 6246767 | Source authentication of download information in a conditional access system A cable television system provides conditional access to services. The cable television system includes a headend from which service "instances", or programs, are broadcast and a plurality of set top units for receiving the instances and selectively decry... | 06/12/2001 |
| 6243145 | Method and apparatus for browsing television channel information by category A cable television system (100) includes a display (235) for displaying program information, a terminal (120) for controlling the presentation of the program information, a memory (240) for storing operational parameters, and a receiver (220) for receivin... | 06/05/2001 |
| 6242982 | Amplifier with self setting automatic gain control circuit An amplifier (125) having automatic gain control (AGC) includes a gain stage (220), having a variable amplifier (215), for amplifying a signal received by the amplifier (125). The amplifier (125) also includes an AGC circuit (228) that adjusts amplificati... | 06/05/2001 |
| 6239897 | Chirp-controlled optical modulator and method of controlling chirp in the modulation of an optical signal An optical signal is modulated by passing it through an optical signal path in an optical modulator. Different electric fields are applied across a first pair of parallel phase modulation arms so as to produce different signal phase modulations in respect... | 05/29/2001 |
| 5830601 | Rechargeable electrochemical cell with modified electrolyte An electrochemical battery cell (10) including a zinc electrode (20), and may be fabricated with an electrolyte (50) system including an electrolyte active species and a modifier. The electrolyte active species is typically a metal hydroxide such as KOH o... | 11/03/1998 |
| 5767657 | Battery charger having a battery discharge prevention circuit A battery charger (10) avoids discharging a battery (12) when the battery is connected to the charger and the charger is unpowered. The charger comprises a control circuit (18) which is switchably connected to an input power line (26) by a switch (28). Th... | 06/16/1998 |
| 5726646 | Method and apparatus for activating and accessing remote meter interface devices A remote meter reading system (10) includes a group of meter interface units operable in an inactive state and periodically activated to monitor a communication channel for activity. Each meter interface unit (12) is responsive to communication signals fr... | 03/10/1998 |
| 5691622 | Idle current cutoff circuit A cutoff switch (40) separates the reference line (20) of a control circuit (18) from the B- line (24). The cutoff switch is in an electrically open state until the function of the control circuit is required, thus eliminating current flow through the con... | 11/25/1997 |
| 5688614 | Electrochemical cell having a polymer electrolyte An electrochemical cell is provided with first and second electrodes, and a solid polymer electrolyte disposed therebetween. The electrodes may either be of the same or different materials and may be fabricated from ruthenium, iridium, cobalt, tungsten, v... | 11/18/1997 |
| 5688613 | Electrochemical cell having a polymer electrolyte An electrochemical cell is provided with a first and second electrodes, and a solid polymer electrolyte disposed therebetween. The electrodes may either be of the same or different materials and may be fabricated from ruthenium, iridium, cobalt, tungsten,... | 11/18/1997 |
| 5687056 | Variable voltage, variable capacitance chip capacitor device having lead pins electrically coupled to capacitor subassembly An electrochemical capacitor chip device (10) includes a plurality of capacitor subassemblies (12, 14, 16, 18, 20, and 22) arranged in stacked configuration. Each stacked capacitor assembly shares a single common electrode (48) from which extends a contac... | 11/11/1997 |
| 5686205 | Bismuth based electrodes for electrochemical cells An electrochemical, bismuth containing charge storage material and electrochemical cells (10) having an electrode (20) comprising the material. The charge storage material has the composition: Bix Xy Mz where Bi is bismuth... | 11/11/1997 |
| 5681357 | Gel electrolyte bonded rechargeable electrochemical cell and method of making same An electrochemical cell 10 includes first and second electrodes 12 and 14 with an electrolyte system 26 disposed therebetween. The electrolyte system includes at least a first and second layer 28 and 30, the second layer 30 being used to absorb an electro... | 10/28/1997 |
| 5677085 | Electrode materials for electrochemical cells and method of making same A method for preparing a carbon material for use as an electrode, such as the anode (30) of an electrochemical cell (10). The carbon is fabricated in a heating process from a plurality multifunctional organic monomers selected from first and second groups... | 10/14/1997 |
| 5658685 | Blended polymer gel electrolytes An electrolyte system 40 for use in connection with an electrochemical cell 10. The cell 10 includes a positive electrode 20 and a negative electrode 30 with the electrolyte system 40 disposed therebetween. The electrolyte system is a blended polymer gel ... | 08/19/1997 |
| 5647963 | Electrode materials for electrochemical cells and method of making same A method for preparing a carbon material for use as an electrode, such as the anode (30) of an electrochemical cell (10). The carbon is fabricated in a heating process from a plurality multifunctional organic monomers selected from first and second groups... | 07/15/1997 |
| 5645958 | Superabsorbent polymer electrolytes for electrochemical cells and electrochemical cells using same An electrolyte system 40 for use in connection with an electrochemical cell (10). The cell (10) includes a positive (20) and a negative (30) electrode, and the electrolyte system (40) disposed there between. The electrolyte system includes a liquid electr... | 07/08/1997 |
| 5644282 | Fuse and Battery apparatus utilizing same A battery pack (10) including at least one battery cell (26) and a circuit carrier (30) in proximity to the battery cell. Disposed in the battery pack, is a fuse (50) which is formed from an electrically conductive resilient material adapted to work as th... | 07/01/1997 |
| 5640071 | Transient charge recovery circuit In a circuit having an electromechanical transducer, such as a motor (22), a control switch (24) is controlled by a control circuit (26) to connect the motor to, and disconnect from, a battery (12). When control switch opens, thereby disconnecting the mot... | 06/17/1997 |
| 5639573 | Polymer gel electrolyte An electrolyte system (40) for use in connection with an electrochemical cell (10). The cell (10) includes a positive electrode (20) and a negative electrode (30) with the electrolyte system (40) disposed therebetween. The electrolyte system is a polymer ... | 06/17/1997 |
| 5637418 | Package for a flat electrochemical device A package for a flat electrochemical device comprises a flexible circuit board. Building from a base layer (62), the flexible circuit board has a conductor layer disposed on the outermost side of the base layer providing a first and second contact portion... | 06/10/1997 |
| 5637413 | Overvoltage disconnect circuit for lithium ion batteries A lithium ion or similar lithium secondary battery pack (10) includes an overvoltage disconnect circuit having an overvoltage disconnect switch (14), a voltage detector (16), and a delay circuit (18). The battery pack is connectable to a recharger which w... | 06/10/1997 |
| 5635812 | Thermal sensing polymeric capacitor A thermal sensing polymeric device (110) such as a capacitor is fabricated from a layer of a copolymeric material (112) including polyvinylidene fluoride and a fluorinated ethylene. The fluorinated ethylene may be selected from the group including trifluo... | 06/03/1997 |
| 5635151 | Carbon electrode materials for lithium battery cells and method of making same A method for preparing an amorphous carbon material for use as an electrode, such as the anode of an electrochemical cell. The amorphous carbon is fabricated in a one heating step process from multi-functional organic monomers. The material is then reheat... | 06/03/1997 |
| 5631103 | Highly filled solid polymer electrolyte An electrochemical cell (10) includes first and second electrodes (12) and (14) with an electrolyte system (26) disposed therebetween. The electrolyte system includes at least a filler material and a gelling polymer. The filler material comprises at least... | 05/20/1997 |
| 5629599 | Rechargeable battery-powered communication device having integral vibrating means A system for charging a battery (22) including a power supply (70) and a vibration device (48) to enhance charging. The vibration device (48) may be the speaker of an electronic communication device (30).... | 05/13/1997 |
| 5626729 | Modified polymer electrodes for energy storage devices and method of making same Method for making high power electrochemical capacitors (28) provides for depositing an electrically polymer (18) and (20) onto a substrate (12) which has been treated so as to form nitride layers (14) and (16) on exposed surfaces thereof. Such electroche... | 05/06/1997 |
| 5626976 | Flexible energy storage device with integral charging unit A flexible, conformal energy storage device (10) has a plurality of photovoltaic devices (40, 42, 44) formed integrally therewith. The energy source includes an anode, a cathode, and an electrolyte encapsulated between layers of oxygen and water impermeab... | 05/06/1997 |
| 5626737 | Method of fabricating a high power density electrochemical charge storage device High power density electrochemical capacitors may be pretreated by immersing the electrodes therefore in an alkaline solution. Thereafter the immersed electrode are subjected to high power pulses for brief periods of time. The pretreatment process forms a... | 05/06/1997 |
| 5626980 | Contact block in a battery pack having snap in features A contact block (10) is provided with a first ledge (34) and a second ledge (38) that deflectably engage a first edge (46) and a second edge (48) of an opening (44) in the housing (42) of an electrical device. The contact block (10) mechanically supports ... | 05/06/1997 |
| 5623280 | Flexible liquid crystal display with touch sensitive screens A touch sensitive liquid crystal display device (70) having first, second, and third substrates, (40), (76) and (90) and a plurality of raised ribs members (46), (48), (50), (42) and (44) to maintain appropriate spacing between said substrates. Electrical... | 04/22/1997 |
| 5620811 | Lithium polymer electrochemical cells A secondary lithium electrochemical charge storage device, such as a battery (10) is taught. The battery (10) includes a first composite electrode (20), and electrolyte layer (40), and a second composite electrode (30). The composite electrodes include at... | 04/15/1997 |
| 5609844 | Carbon electrode materials for electrochemical cells and method of making same A method for preparing an amorphous carbon material for use as an electrode, such as the anode of an electrochemical cell. The amorphous carbon is fabricated in a one heating step process from multi-functional organic monomers. Electrodes so fabricated ma... | 03/11/1997 |
| 5604660 | Electrochemical cell having solid polymer electrolyte and asymmetric inorganic electrodes An electrochemical cell is made with two asymmetric electrodes and a solid polymer electrolyte. The anode is made from materials such metal hydrides, metals, metal hydroxides or metal oxides. The cathode is made from metal hydrides, metals, metal hydroxid... | 02/18/1997 |
| 5596567 | Wireless battery charging system A battery charger (12) and battery pack (14) are each provided with a wireless communications device, (24) and (28) respectively, to communicate over a wireless channel (32). The battery charger (12) receives charging information from a memory (30) housed... | 01/21/1997 |
| 5594319 | Battery pack having theft deterrent circuit A battery pack (10) has a memory (26) for storing a password. Upon connecting to a host device (12), or similar load, the battery waits for a data word to be communicated from the host device over a communications channel (22). If an incorrect data word i... | 01/14/1997 |
| 5591548 | Electrode materials for rechargeable electrochemical cells and method of making same A method for preparing a lithiated transition metal oxide electrochemical charge storage material for use in an electrochemical cell. The cell (10) includes a cathode (20), an anode (30) and an electrolyte (40) disposed therebetween. The method involves t... | 01/07/1997 |
| 5591540 | Packaging for an electrochemical device and device using same An electrochemical charge storage device (10) includes first and second electrodes (16) (22) with first and second current collectors (18) (24) respectively attached, an electrolyte (20) disposed between the electrodes and first and second metal foils (14... | 01/07/1997 |
