Dual-mode AFC circuit for an SSB radio transceiver

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The Motorola, Inc. patent solves the following problem:

The present invention generally relates to a sideband radio communication systems. More particularly, the present invention relates to techniques for passing the analog voice signal by the single sideband amplitude modulation, and digital data signal by narrowband frequency modulation, a trunked radio system with a dedicated channel bandwidths.

Our analysis of this patent is as follows:

Motorola, Inc.’s patent US 4817192 A deals with Dual-mode AFC circuit for an SSB radio transceiver.
An automatic frequency control (AFC) circuit is disclosed for use in a SSB radio transceiver able to transmit and receive SSB and FM data signal on any one of a number of communication channels with equal bandwidths. The dual-mode AFC circuit includes AFC circuitry that is capable of tracking the frequency of either: (a) a first radio frequency (RF) carrier signal modulated voice with a signal sideband amplitude modulation in a first channel bandwidth by locking in reduced pilot carrier signal transmitter in SSB; or (b) a second RF carrier with high speed data signal modulated narrowband frequency modulation within the assigned channel bandwidth. The AFC circuit also includes control circuitry to memorize the AFC control voltage during the time that the mobile transmission, and help in the acquisition of FM data carrier by various AFC sweep rate the signaling channel.

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Dental intrusion device

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The Howe Raymond P patent solves the following problem:

This creation account in general orthodontic devices and more specifically it relates to novel devices for use in the dental entry.

Our analysis of this patent is as follows:

Howe Raymond P’s patent US 4815972 A deals with Dental intrusion device.
A dental intrusion device for standing in one or more teeth in a dental arch. Plural embodiments of the thoughts expressed in the generic context of an intra-oral structure operatively associated with the arch, an extra-oral structures, and a force-generating mechanism that arrived between the intra- and extra-oral structures. The co-action of these components results in forces to enter developed teeth intruded. Various parts in the generic part of the invention relate to the particular type of force to use the mechanism, specific forms of intra-oral structures and particular kind of extra-oral structures.

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Updatable micrographic pocket data card

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The Drexler Technology Corporation patent solves the following problem:

Our analysis of this patent is as follows:

Drexler Technology Corporation’s patent US 4814594 A deals with Updatable micrographic pocket data card.
A strip of Optical contrast laser recording material would wallet-size card, and laser written characters recorded thereon. The characters are formed with a plurality of pixels, similar in nature to the dots that make up character dot matrix, except that the pixels themselves formed spots. The spots thrown in a geometric regular war and often written in a column at a time until a full pixel formed. Machine readable and visually readable characters can be combined in a strip of data.

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Method and apparatus for selectively evaluating an effective address for a coprocessor

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The Motorola, Inc. patent solves the following problem:

When the data processors in the first frame forms, expansion instruction or register set is usually implemented by simply adding additional electronics in the central processing unit (CPU), although significant expansion may Cabinet needs more space and power supply capacity. With the advent of minicomputers, these enhancements more difficult to integrate into existing settings. An alternative to the expansion of the CPU is to provide additional circuitry in a special "hardware support" module. However, its implementation needed in many of the signal if the internal CPU to be carried out by the wiring harness to the module. Additionally, the CPU is often need new signals that coordinate the processing activities of the module. One form of this type of interface used in Digital Equipment Corporation in the couple PDP-11 FP-11C Floating Point processor.

Our analysis of this patent is as follows:

Motorola, Inc.’s patent US 4811274 A deals with Method and apparatus for selectively evaluating an effective address for a coprocessor.
A system for interfacing a processor to a coprocessor using the standard cycle bus. Processor, upon encountering his instruction stream an instruction with a particular format Operation words, moving a Command meeting that following the meeting with Operation in a particular Coprocessor appointed a coprocessor Identity field meeting in Operation. In examining the meaning of Command meeting, the Coprocessor respond to any of a set of primitives response indicating functions Coprocessor processor needs to do to support the Command with Coprocessor. interface provides for all functions that Coprocessor needed, including the selective vectoring to appropriate handlers outside.

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