Bizarre Patents
Pet Toilet-Like Water Disk and Food Storage
One pet-friendly inventor patented "a device for watering pets, e.g., a dog or cat." The device, he helpfully noted, "has the general shape of a toilet."
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| Number | Title | Issue Date |
| 5148162 | Analog-to-digital converter comparator circuit utilizing a reverse polarity sampling technique An analog-to-digital converter comparator circuit includes a pair of differential amplifiers having their outputs normally intercoupled in a subtractive sense. At a sampling strobe time, the output of one differential amplifier is reversed such that outpu... | 09/15/1992 |
| 5126960 | Generation of phase related waveforms A pair of waveforms in quadrature relation, or otherwise phase related, are generated from a single direct digital synthesizer employing a single wave lookup table memory. Successive addresses are applied to the memory representing the desired phase diffe... | 06/30/1992 |
| 5088028 | Lock converting bus-to-bus interface system A bus-to-bus interface circuit maps a portion of the address space of each bus to a corresponding portion of the address space of the other bus. When a computer processor one one bus attempts to read or write access a mapped address, the bus interface cir... | 02/11/1992 |
| 5060139 | Futurebus interrupt subsystem apparatus An interface circuit board connected to a VMEbus standard backplane bus of a first data processing system, and also to a Futurebus standard backplane bus of a second data processing system, provides address/data conversion and interrupt service between th... | 10/22/1991 |
| 4974167 | Erasable data acquisition and storage instrument A digital oscilloscope includes an acquisition system for digitizing an input signal to produce and store in memory a waveform data sequence representing the input signal. A display system within the instrument reads out and processes the data stored in t... | 11/27/1990 |
| 4884228 | Flexible instrument control system Operation of a microcomputer-based instrument is controlled by software including a control interface system, a command execution system, and a steady state system. The steady state system includes a group of subsystems operating as concurrent tasks, each... | 11/28/1989 |
