Patents by Inventor Albert M. Bates

Albert M. Bates has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 5162741
    Abstract: A system is provided for temperature compensating and monitoring the energy f a lithium battery. In this method, a temperature compensation factor is determined according to a value of temperature. A determination is made of the energy usage while the battery operates at that temperature. The temperature usage is then compensated in accordance with the temperature compensation factor. A second temperature, along with a second temperature compensation factor, is determined. A second energy level is determined and compensated as described for the first. A cumulative energy usage is determined according to the first and second compensated energy usage values.
    Type: Grant
    Filed: April 3, 1991
    Date of Patent: November 10, 1992
    Assignee: The United States of America as represented by the Secretary of the Navy
    Inventor: Albert M. Bates
  • Patent number: 4660182
    Abstract: A programmable phase-locked loop frequency synthesizer for a multi-channel onobuoy transmitter is disclosed. The phase-locked loop, including a counter/divider utilizing variable modulus prescaling techniques, is modulated at its voltage-controlled oscillator (VCO) by an external signal which is preemphasized by a compensation network in order to correct for the roll-off characteristic response of the loop below its natural frequency.
    Type: Grant
    Filed: June 20, 1984
    Date of Patent: April 21, 1987
    Assignee: The Unites States of America as represented by the Secretary of the Navy
    Inventors: Albert M. Bates, Wayne H. Sandford, Jr., Michael T. Junod
  • Patent number: 4315324
    Abstract: Serving as a hydrophone in the lower unit of the sonobuoy, two surface acoustic wave resonators for determining the resonant frequency of two independent oscillators are also used to sense pressure and thus sound. The outputs of the two resonators are mixed and then passed through a low pass filter to provide a low frequency hydrophone output signal and to remove temperature induced signal distortion. A line driver and low cost twin lead transmission line provides the signal to the upper floatation electronic unit of the sonobuoy for conversion to the desired RF carrier frequency. In a single-channel sonobuoy, this signal is multiplied and amplified for transmission to a distant receiver. In a multi-channel sonobuoy, this signal acts as a reference frequency for the frequency synthesizer section of the sonobuoy transmitter.
    Type: Grant
    Filed: September 11, 1980
    Date of Patent: February 9, 1982
    Assignee: The United States of America as represented by the Secretary of the Navy
    Inventors: Michael T. Junod, Albert M. Bates
  • Patent number: 4259744
    Abstract: A simultaneous multichannel signal generator incorporating phase-locked l frequency correction. For each channel, there is a voltage-controlled oscillator (VCO) set to an appropriate frequency by a tuning signal and modulated by a channel data signal. The output signals from all VCO's are provided to a summer and then are appropriately amplified and filtered for transmission. A single multiplexed frequency correction circuit compares the phase of a reference frequency signal with the phase of a VCO output signal whose frequency has been divided, by a divide-by-N counter, to the reference frequency. If the divided VCO signal is out of phase with the reference frequency signal, an appropriate correction signal is provided to the device providing voltage control for that VCO.
    Type: Grant
    Filed: August 27, 1979
    Date of Patent: March 31, 1981
    Assignee: The United States of America as represented by the Secretary of the Navy
    Inventors: Michael T. Junod, Albert M. Bates
  • Patent number: 4109232
    Abstract: An object detection system capable of receiving and processing an omnidirional signal and two directional signals to produce a digitized omnidirectional signal, and digitized directional signals which have been corrected to magnetic north. The directional hydrophones produce sin .theta. and cos .theta. signals, where .theta. is the bearing angle of the sensed target from the directional hydrophones' y-axis. Each of the three signals is picked up by a separate hydrophone and is passed through an associated preamplifier and a shaper amplifier and low pass filter before being simultaneously sampled by separate sample/hold circuits. The three sampled signals are multiplexed to an analog to digital converter. The signal produced by a digital magnetic compass is converted to sin .theta. and cos .theta. values by appropriate function generators, where .theta. is the angle between the y-axis and magnetic north. The digital sin .theta., cos .theta., sin .phi. and cos .phi.
    Type: Grant
    Filed: June 6, 1977
    Date of Patent: August 22, 1978
    Assignee: The United States of America as represented by the Secretary of the Navy
    Inventors: Albert M. Bates, Wayne H. Sandford, Jr., Anthony J. Madera
  • Patent number: 4057778
    Abstract: Test equipment is employed within a conventional sonobuoy system for selfsting operational signal parameters of the sonobuoy. Sonobuoy reference and phase pilot signals and modulator carrier signals are sequentially sampled and compared with reference signal levels to drive failure indicators which note the respective signal failures.
    Type: Grant
    Filed: November 1, 1976
    Date of Patent: November 8, 1977
    Assignee: The United States of America as represented by the Secretary of the Navy
    Inventors: Albert M. Bates, Anthony J. Madera
  • Patent number: 4001726
    Abstract: A voltage controlled sweep oscillator system which is stepped in frequency, avoiding transitional frequencies. Only discrete frequencies are provided by dividing the system into two segments wherein each segment comprises a voltage-controlled oscillator (VCO) in a phase-locked loop. A multiplexer provides one VCO signal to the output while the other VCO is stepping its frequency, and vice versa. Frequency control in each segment is achieved by comparing the divided output of a VCO with a reference frequency signal and making adjustments to cancel any errors that may appear.
    Type: Grant
    Filed: January 23, 1976
    Date of Patent: January 4, 1977
    Assignee: The United States of America as represented by the Secretary of the Navy
    Inventors: Wayne H. Sandford, Jr., Albert M. Bates