Variable whistle pitch control for model train layouts
AssigneeDigitrax Inc.
InventorAnthony J. Ireland
Life of this patent
Estimating the term…
Abstract
New techniques are presented for providing proportional activation of model railroad functions with control keys. This permits for example a compact throttle device connected to a digital layout control system to provide for a “playable” or variable-pitch whistle sound effect where prior art was severely limited in providing this effect realistically. This invention allows multiple proportional keys in a cost-effective manner that is compatible with existing keyboard designs.
Claims20
A method for generating proportional commands from a control key means on a digital model railroad control system, comprising;
- a) providing said control key means, comprising:
- (i) a key switch means with an output actuation when there is force applied, attached to,
- (ii) a force sensing means for providing an output that is proportional to said force applied to said key switch means,
- b) providing a control logic means that uses said output actuation of said key switch means to control creation of said proportional commands in combination with said output of said force sensing means and to conduct said proportional commands to said digital model railroad control system,
- whereby said proportional commands may be generated in response to varying said force applied to said control key means.
A method for generating proportional commands from a control key means on a digital model railroad control system comprising;
- a) providing said control key means comprising:
- (i) a key means with a proportional output when there is force applied,
- (iii) a force threshold decision means for providing a decision output when the force applied to said key means exceeds a predetermined actuation threshold,
- b) providing a control logic means that uses said decision output of said force threshold decision means to control creation of said proportional commands in combination with said proportional output of said key means and to conduct said proportional commands to said digital model railroad control system,
- whereby said proportional commands may be generated in response to varying said force applied to said control key means.
An apparatus for generating proportional commands for a digital model railroad control system comprising:
- a) control key means comprising:
- (i) a key means with a sensor for generating a proportional output when there is force applied,
- (ii) a force threshold decision means for providing a decision output when the force applied to said key means exceeds a predetermined actuation threshold,
- b) a control logic means that uses said decision output in combination with said proportional output to create said proportional commands for said digital model railroad control system,
- whereby said control logic means generates proportional commands in response to varying said force applied to said control key means.
Dependencies are inferred from the claim text.