Variable digital control for electronic device with rotary switc

Details Variable digital control for electronic device with rotary switc Variable digital control for electronic device with rotary switc

1994-01-10

1996-04-30

Brinich, Stephen

Electrical audio signal processing systems and devices

Including amplitude or volume control

With manual volume control

381104, G06F 303

Patent

active

055132685

ABSTRACT:
A digital control device and method are provided for controlling functions such as volume and tuning for an electronic radio in response to a digital rotary switch. The apparatus includes a digital switch movable to a plurality of positions and which has a plurality of digital outputs to represent the positions. Control increments corresponding to an amount of rotation and rate of rotation of the switch are stored in a memory. The rotary switch output is periodically sampled to determine when switch movement occurs and to further determine the direction of switch rotation based on a sequence of the plurality of digital outputs. The rate of rotation of the rotary switch is then determined from counting changes in position of the switch over a sampling time A control increment is looked up in the memory that corresponds to the determined rate. The control increment is then used to change a digital output signal for controlling the electronic device. The digital output signal may control volume for an electronic radio or may include a tuner selector for selecting the tuning frequency of a radio. Accordingly, the present invention enables one to have variable control of radio functions in accordance with predetermined rates of rotation of a digital rotary switch.

REFERENCES:
patent: 4239938 (1980-12-01), Ponto
patent: 4270177 (1981-05-01), Endoh et al.
patent: 4349779 (1982-09-01), Ono
patent: 4412182 (1983-10-01), Yochum
patent: 4527230 (1985-07-01), Sato et al.
patent: 4611344 (1986-09-01), Hayama et al.
patent: 4706294 (1987-11-01), Ouchida
patent: 5010577 (1991-04-01), Sakanishi et al.
patent: 5081682 (1992-01-01), Kato et al.

Affiliated with

Also associated with

Rating

Variable digital control for electronic device with rotary switc does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Variable digital control for electronic device with rotary switc, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Variable digital control for electronic device with rotary switc will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-635494