Bizarre Patents
Process For Propelling Foodstuffs or the Like into a Crowd
A method of launching foodstuffs into a crowd for promotional and entertainment purposes.
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 |
| 5652764 | Radio communication system Transmission data is spread by spreaders through two orthogonal codes generated by orthogonal code generators, the spread signals are subjected to binary phase modulation with a given carrier wave by BPSK modulators, and are then transmitted from separate... | 07/29/1997 |
| 5648968 | Narrow beam antenna systems with angular diversity A transmitting system (80) is disclosed which includes several antennas (801-803) providing a plurality of antenna beams. The transmit signal from transmitter 81 is sent to the plurality of antennas via routing circuitry (82). The transmit signal is divid... | 07/15/1997 |
| 5638405 | Dual-mode baseband controller for radio-frequency interfaces relating to digital cordless telephones A dual-mode baseband controller enables a single integrated circuit to support either In-Phase Quadrature (I-Q) or Non-Return to Zero (NRZ) radio-frequency transmitter architectures for use in second generation (CT2) cordless telephones. A radio frequency... | 06/10/1997 |
| 5636242 | Diversity transmitter/receiver After coding transmission data by means of an error-correction coder, the data are divided into N branches, pass through a plurality of delay elements, undergo interleaving in an interleave circuit, primary modulation in a modulator, undergo spread-spectr... | 06/03/1997 |
| 5598404 | Transmission diversity for a CDMA/TDD mobile telecommunication system In a base station which has a plurality of antennas, each of a plurality of comparison circuits operates to compare correlation levels, which are obtained by despreading received signals for a plurality of channels, with each other with respect to the ant... | 01/28/1997 |
| 5590403 | Method and system for efficiently providing two way communication between a central network and mobile unit A two-way communication system for communication between a system network and a mobile unit. The system network includes a plurality of base transmitters and base receivers included in the network. The base transmitters are divided into zonal assignments ... | 12/31/1996 |
| 5579341 | Multi-channel digital transceiver and method A multi-channel digital transceiver (400) receives uplink radio frequency signals and converts these signals to digital intermediate frequency signals. Digital signal processing, including a digital converter module (426), is employed to select digital in... | 11/26/1996 |
| 5568507 | Geometric harmonic modulation (GHM) - analog implementation The present invention provides a novel Geometric Harmonic Modulation (GHM) system. The GHM system operates in two modes, a preamble mode and a traffic mode. During the preamble mode, n+1 frequencies are each offset by a predetermined phase offset in the t... | 10/22/1996 |
| 5568509 | Dynamic code division multiple access communication system A traffic carrier waveform Wn (.PHI.,R;t) being the product of a number of tones is employed in transmitting blocks of information from a transmit unit to a receive unit. The tones are geometrically increasing multiples of a frequency of a fund... | 10/22/1996 |
| 5568508 | Interlaced geometric harmonic modulation The present invention provides a novel frequency Interlaced Geometric Harmonic Modulation (IGHM) system. The IGHM system operates in two modes, a preamble mode and a traffic mode. During the preamble mode, n+1 frequencies are each offset by a predetermine... | 10/22/1996 |
| 5563906 | Method of geometric harmonic modulation (GHM) The present invention provides a novel Geometric Harmonic Modulation (GHM) method. The GHM method functions in two modes, a preamble mode and a traffic mode. During the preamble mode, n+1 frequencies are each offset by a predetermined phase in a transmit ... | 10/08/1996 |
| 5507035 | Diversity transmission strategy in mobile/indoor cellula radio communications In a mobile cellular communication system, a base station is wired to a Local Area Network (LAN), and has wireless communication with a plurality of mobile stations. Multipath fading is substantially reduced in the system by utilizing antenna diversity te... | 04/09/1996 |
| 5491723 | Wireless communication system having antenna diversity A wireless communication system includes a plurality of stations each having a plurality of antennas. A first packet, containing a training signal portion is transmitted from a transmitting station using a first selected antenna and received at a receivin... | 02/13/1996 |
| 5259003 | Method of encoding two digital data signals A method to encode two digital data signals is disclosed. Each of the digital signals is characterized by a bit stream. An N bit block from the first signal is mapped to a unique M bit third signal where M is greater than N. Further, the number of "0's" i... | 11/02/1993 |
| 5243629 | Multi-subcarrier modulation for HDTV transmission A high definition television (HDTV) signal is transmitted by a multi-subcarrier transmission scheme in which each subcarrier is used to carry a different class of HDTV information.... | 09/07/1993 |
| 5201071 | Method and apparatus for reducing the peak envelope voltage of an RF transmitter while maintaining signal average power The average RF power output of an independent sideband diversity radio transmitter, modulated by a multiple tone data signal, is increased while the RF output peak envelope voltage is held constant. For diversity operation the same information, as a combi... | 04/06/1993 |
| 5048057 | Wireless local area network In a wireless local area network, predetermined interference-detection sequences of signal points, known at both the transmitter and receiver, are transmitted over a plurality of hopping frequencies along with a sequence of data signal points taken from a... | 09/10/1991 |
| 4849990 | Digital communication system The present invention provides two branches of a base station transmitter and a base station receiver, respectively, and inserts a delay circuit for ensuring a delay time difference between D and U waves required to obtain the best bit error rate for a DS... | 07/18/1989 |
| 4797903 | Channel switching system without instantaneous signal loss A channel switching system without an instantaneous signal loss in a data communication system such as a digital microwave multiple radio communication system. The channel switching system includes a control unit for generating a switching control signal ... | 01/10/1989 |
| 4710944 | Dual transmit-receive space diversity communication system A transmit/receive space diversity system communicates between transmitter-receivers at two separate sites. Each site has at least two antennas. Each antenna at a first one of the sites transmits a pilot signal, at differing frequencies. At the second or ... | 12/01/1987 |
| 4641318 | Method for improving the reliability of data transmission over Rayleigh fading channels A method and apparatus for reducing the bit error probability of data transmitted over a Rayleigh fading channel are disclosed. A relatively high bit rate serial stream of data is divided into N parallel relatively low bit rate streams of data. A controlled am... | 02/03/1987 |
| 4628517 | Digital radio system Frequency diversity is employed to counter selective fadings as a result of multi-path propagation for troposcatter and short-wave connections for digital useful signals employing frequency modulation. For this purpose, the digital useful signal is suppor... | 12/09/1986 |
| 4621368 | Digital transmission system Fast and deep fading tends to occur in the communication between a fixed base station and a mobile station which is carried on an automobile travelling in an urban area. When connection control signals or other digital code pattern need to be transmitted ... | 11/04/1986 |
| 4615040 | High speed data communications system An improved data transmission system has a transmitter which includes a modulator responsive to a synthesized modulating signal, which provides for transmission of data substreams on parallel subchannels, for example, by using subcarrier frequencies. At t... | 09/30/1986 |
| 4599734 | Space diversity communications system for multi-direction time division multiplex communications A space diversity communications system usable with a multi-direction time division multiplex communications network which consists of a plurality of scattered satellite stations and one central station. While the central station is provided with a single... | 07/08/1986 |
| 4490830 | Radio signal transmission system including a plurality of transmitters for transmitting a common signal A single data signal is transmitted by two transmitters to two radio zones having an overlapping zone therebetween. The data signal is frequency or phase modulated and is mixed in the transmitters with RF carrier waves of equal frequency. The data signal ... | 12/25/1984 |
