METHOD FOR USING A ROTATING INPUT DEVICE

• US 20070110392A1
• Filed: 07/31/2006
• Published: 05/17/2007
• Est. Priority Date: 10/07/2005
• Status: Abandoned Application

• Current Assignee: SMK Corporation
• Original Assignee: SMK Corporation
• Inventors: Miwa, Kenichi
• Application Number:
  US11/461,233
• Publication Number:
  US 20070110392A1
• Time in Patent Office: Days
• US Class Current: 386/234
• CPC Class Codes: H01H 25/041 having a generally flat operating member depressible at different locations to operate different controls
• CPC Class Codes: H03K 17/965 Switches controlled by moving an element forming part of the switch

Abstract

A method for using a rotating input device assigns multiple functions to the rotating input device without requiring special switching operations. When a rotating input operation of the rotating input device is first performed, the device detects a rotary position of the rotating input device at which the initial operation was performed. A plurality of regions are set up along 360 degrees of input orientation for the rotating input device, and a different operation is assigned to each region. When the first rotating input operation is performed, the region of the position at which the initial operation is performed is identified, and subsequent rotating input operations are used to control the operation assigned to the selected region.

Claims

1. A method for using a rotating input device equipped with a rotating input mechanism, comprising the steps of:

defining a plurality of regions along a range of input positions for the rotating input device;

assigning a different function to each of said plurality of regions;

detecting a first input position at which said rotating input operation is first performed;

determining one of the plurality of regions corresponding to the first input position; and

applying subsequent continuous rotation input operations to operate the function assigned to the one determined region.

2. The method of claim 1, wherein the range of input positions encompasses 360 degrees of rotation of the rotating input device.

3. The method of claim 1, wherein the plurality of unctions are directed to scheduling the recording of television shows for a video recorder or for a hard disk recorder, the plurality of functions including two or more of a) selection of broadcast channels, b) selection of recording times, c) selection of recording days, and d) selection of recording weeks.

4. The method of claim 1, wherein the plurality of functions are directed to operating an on-board navigation system, the plurality of functions including two or more of a) horizontal scrolling of a map, b) vertical scrolling of the map, c) zooming in or out of the map.

5. In a rotating input device equipped in a layered manner with:

a disc-shaped actuator;

a resistor formed as a ring-shaped uniform resistor having a radius substantially equal to a radius of said actuator; and

a ring-shaped electrode pattern aligned with said ring-shaped resistor;

wherein when pressure is applied near an outer perimeter of said actuator, said ring-shaped resistor and said electrode pattern come into contact, such that position data for a point of contact may be determined from a potential generated across a resistance defined by the point of contact contact; and

wherein position data for subsequent points of contact are determined periodically at a uniform fixed interval;

a method for using the rotating input device, comprising the steps of;

defining a plurality of regions along a range of input positions for the rotating input device;

assigning a different function to each of said plurality of regions;

detecting a first input position from the position data for the point of contact;

determining one of the plurality of regions corresponding to the first input position; and

applying position data from subsequent points of contact to operate the function assigned to the one determined region.

6. The method of claim 5, wherein the range of input positions encompasses 360 degrees of rotation of the rotating input device.

7. The method of claim 5, wherein the plurality of functions are directed to scheduling the recording of television shows for a video recorder or for a hard disk recorder, the plurality of functions including two or more of a) selection of broadcast channels, b) selection of recording times, c) selection of recording days, and d) selection of recording weeks.

8. The method of claim 5, wherein the plurality of functions are directed to operating an on-board navigation system, the plurality of functions including two or more of a) horizontal scrolling of a map, b) vertical scrolling of the map, c) zooming in or out of the map.

9. The method of claim 5, wherein four electrodes are equi-spaced around the ring-shaped uniform resistor, the rotating input device further includes a pair of switches for connecting each electrode in each opposing electrode pair to a potential source and to a potential ground, respectively, the opposing pairs defining an x side and a y side of the rotating input device and the ring-shaped electrode pattern includes a lower read electrode for measuring a potential at the point of contact, the step of detecting a first input position further comprising the steps of:

Assigning position values ranging from 0 to 512 around a perimeter of the rotating input device;

measuring potentials and apparent position data for each of the x side and y side, where values of 0 and 512 are respectively assigned to potential ground and potential source electrodes for each of the x side and the y side for determining apparent position data of the x side and y side, respectively;

determining whether the measured y side potential is within a predetermined range, and

when the measured y side potential is within a predetermined range, converting y side position data using the x side position data as follows;

if the apparent position of x>

128, position data=256−

the apparent position of y, and

if the apparent position of x<

128, position data=256+ the apparent position of y.

10. The method of claim 9, when the measured y side potential is outside the predetermined range, converting x side position data using the y side position data as follows:

if the apparent position of y<

128, position data=384−

the apparent position of x, and

if the apparent position of Y>

128, position data=384+ the apparent position of x.

11. The method of claim 5, including four regions a-d, wherein:

region a encompasses position data in the ranges of 448-512 and 0-63;

region b encompasses position data in the range of 64-191;

region c encompasses position data in the range of 192-319; and

region d encompasses position data in the range of 320-447.