| Patent Number |
Title Of Patent |
Date Issued |
| 6860144 |
Oxygen sensor monitoring arrangement |
March 1, 2005 |
| A non-intrusive method and arrangement for detecting the aging of an oxygen sensor, without increasing tailpipe emissions, is provided. The method detects an aging oxygen sensor, located between a motor vehicle engine and a catalytic converter, by sampling a series of oxygen level signal |
| 6357230 |
Hydraulic ride control system |
March 19, 2002 |
| A hydraulic ride control system is disclosed and adapted to control the ride of a machine having a load. The ride control includes an accumulator arrangement that is selectively connected with the actuator that is carrying the load to provide a cushion ride during traveling and to enable |
| 4790030 |
Tuner with insertable antenna coupler |
December 6, 1988 |
| Antenna coupling components including a coil and a static discharge resistor are mounted on a separate printed circuit board within a tuner that is positioned by means of projecting tabs on each end so as to self-center the coil with the inductor. A first tab extends through an apert |
| 4667243 |
Television receiver for direct broadcast satellite signals |
May 19, 1987 |
| A television (TV) receiving system includes a first TV receiver for receiving TV signals in a first range of frequencies, such as are used for cable, VHF and UHF broadcasting including a frequency synthesizer type local oscillator. The frequency synthesizer uses a voltage controlled |
| 4622527 |
Isolation of RF signals in a RF shield aperture |
November 11, 1986 |
| An apparatus is disclosed which presents a high impedance to unwanted RF signals which may be otherwise coupled to jumper wires which traverse the boundary between RF shielded areas. Specifically, a conductor for connecting two circuits separated by a shield wall is surrounded by a f |
| 4599652 |
Dual channel IF TV receiver with AFT derived from the picture carrier in the sound channel |
July 8, 1986 |
| A quasi-parallel IF television receiver derives the AFT voltage from a video carrier in the sound IF channel. Since the signals in the sound IF channel do not pass through the VSB filter, asymmetries in the AFT loop response are avoided. This results in better operation of the AFT contro |
| 4581643 |
Double conversion television tuner with frequency response control provisions |
April 8, 1986 |
| In a double conversion tuner for a television receiver including a first local oscillator and a first mixer for converting the RF signal corresponding to a selected channel to a first IF signal and a second local oscillator and a second mixer for converting the first IF signal to a s |
| 4575761 |
AFT arrangement for a double conversion tuner |
March 11, 1986 |
| A double conversion tuner stabilized against drift includes a first local oscillator included in a phase locked loop (PLL) and a second local oscillator included in an automatic fine tuning (AFT) loop. A switching arrangement selectively allows the AFT signal to control the second local |
| 4562472 |
Double conversion tuner with split IF output |
December 31, 1985 |
| A double conversion television tuner has first and second mixers and uses both the sum and difference frequency signals from the second mixer. The picture component of the difference frequency is separated from the output of the second mixer using a first filter and then demodulated. A s |
| 4555809 |
R.F. Diplexing and multiplexing means |
November 26, 1985 |
| Selection elements such as diodes or filters are provided for selectively grounding either one of the two unbalanced terminals of a balun. This allows either a signal, such as the R.F. signals from a VHF or a UHF antenna, applied to the other unbalanced terminal of the balun to be se |
| 4494081 |
Variable frequency U. H. F. local oscillator for a television receiver |
January 15, 1985 |
| A tunable oscillator develops a signal having a frequency variable over a range of frequencies in response to a control signal. A frequency determining resonant circuit includes two voltage-variable capacitance diodes in an arrangement for adjusting at least one endpoint of the frequ |
| 4392022 |
Television remote control system for selectively controlling a plurality of external apparatus |
July 5, 1983 |
| A remote control system utilizing a portion of a television receiver system to control appliances external to the television receiver. A specific embodiment is shown for controlling a telephone through the television remote control unit. The viewer answers or originates telephone calls b |
| 4368540 |
Phase locked loop tuning system including a prescaler conditioned to oscillate at an out-of-band |
January 11, 1983 |
| In a phase locked loop tuning system including a prescaler for dividing the frequency of the local oscillator signal by a factor selected to make the resultant frequency divided signal compatible with digital processing portions of the tuning system, a frequency selective network is coup |
| 4352111 |
Multi-band antenna coupling network |
September 28, 1982 |
| An antenna coupling network for supplying VHF television carriers to a VHF tuner of a television receiver and weather band carriers to a tuner of a weatherband radio incorporated in the television receiver from a single monopole antenna without adverse interaction simply comprises a firs |
| 4242655 |
RF Connector assembly with low frequency isolation |
December 30, 1980 |
| A coaxial RF connector adapted for mounting on a wall of a utilization device, such as a video disc player, employs a capacitor for providing DC and low frequency blocking between the wall of the device and the outer conductor of the connector. The capacitor is formed in the shape of a |
