Dennis B Walling

US Patent:

40245012, May 17, 1977

Filed:

Sep 3, 1975

Appl. No.:

5/609942

Inventors:

William M. Herring - Campton Township, Kane County IL
James P. Johnson - Warrenville IL
Dennis B. Walling - Darien IL

Assignee:

Standard Oil Company - Chicago IL

International Classification:

H04Q 100

US Classification:

340147R

Abstract:

A line driver system for digital communication, using logic-level voltages, between an electronic transmitter-receiver device and an electronic receiver device, such as between a computer and a typewriter, a line printer or a cathode ray tube, has the transmitter-receiver device at a location remote from the receiver device. An output of the transmitter-receiver device is electronically coupled to an input of the receiver device using one line of a communications bus. This output of the transmitter-receiver device is coupled to that line of the bus through an optical isolator and then through a power booster. The receiver device has an output that provides a voltage signal when the receiver device is switched on-line. This voltage signal is provided at that output of the receiver device when the receiver device is capable of transforming digital information, that is provided at its input, to a readable form that is printed or displayed by the receiver device. This output of the receiver device is coupled through another optical isolator and through another power booster to a second line of the bus so that this second line of the bus receives a voltage signal when the receiver device is in the on-line condition.

US Patent:

40053873, Jan 25, 1977

Filed:

Dec 22, 1975

Appl. No.:

5/643350

Inventors:

William M. Herring - Campton Township, Kane County IL
Dennis B. Walling - Darien IL

Assignee:

Standard Oil Company - Chicago IL

International Classification:

G06F 1546
G06F 300

US Classification:

3401725

Abstract:

During the use of process equipment it is necessary to position control valves, change analog set-point signals for process controllers, move thermocouples to specific positions in thermowells, etc. A computer control system for these operations utilizes binary information on three sets of bits of a bus and an execute signal on another bit provided by a computer, usually at a remote area, to select the device of the equipment to be changed and to make the change. The system includes: an information interface card; a number of actuator module cards; decoder/demultiplexer means; and device select means. The interface card is connectable to first and second sets of bits of a bus that is connectable to additional systems. The device select means is connected to a third set of bits of the bus. The binary information to the device select means results in a signal only at one of its outputs, each output being connected to a different system.

US Patent:

39684873, Jul 6, 1976

Filed:

Oct 15, 1974

Appl. No.:

5/514495

Inventors:

William M. Herring - Elburn IL
Dennis B. Walling - Darien IL

Assignee:

Standard Oil Company - Chicago IL

International Classification:

G06F 300

US Classification:

340347AD

Abstract:

The system includes: a number of subassemblies, each containing a set of switches connectable at their pair of inputs to different sources of analog signals and containing a multiplexer/decoder having outputs connected to different switches for their selective actuation; a differential amplifier having a pair of inputs connected to the pair of outputs of all of the switches; analog/digital converter means having its input connected to the output of the amplifier and having outputs providing multi-bit digital information; and control means that provides various functions.

US Patent:

39670953, Jun 29, 1976

Filed:

Aug 26, 1974

Appl. No.:

5/500321

Inventors:

William M. Herring - Campton Township IL
Dennis B. Walling - Darien IL

Assignee:

Standard Oil Company - Chicago IL

International Classification:

H03K 2112

US Classification:

235 92EA

Abstract:

At the general area of a set of BCD counter means, each to contain individual accumulated counts, a system, called a multi-counter register, is generally located for its use that permits the individual reading of the counter means in a selective mode by local readout means at the general area or by a computer at a remote area by the use of a small number of address channels extending from the location of the counter means to the computer. The multi-counter register includes data storage means, having inputs to receive digital information and having outputs to transmit that digital information, sets of gate means that are connected in parallel at their outputs to these inputs of the storage means and that have their inputs connectable to different BCD counter means, means responsive to signals, including signals providing digital information, to enable selectively one of said sets of gate means so that the BCD counter means connected to that enabled set of gate means is operatively connected to said inputs of said data storage means for transfer of digital information from that BCD counter means to said storage means when it can be loaded, said signal-responsive means being operatively connected to said sets of gate means, and means to provide at least one signal to another input of said storage means so that it can be loaded at said inputs, connected to said sets of gate means, with the digital information in that BCD counter means connected to that set of gate means enabled by said signal-responsive means, said signal-providing means being operatively connected to said another input of said storage means. In one construction of the invention, in which there is selection and readout by a computer, the information entered into the storage means of the multi-counter register from one of the counter means is transmittted serially to the computer. Illustratively in that construction the storage means is shift register means.