Title:
SENSOR CONTROLLER, POINTING DEVICE, AND POSITION DETECTION SYSTEM
Document Type and Number:
WIPO Patent Application WO/2017/029836
Kind Code:
A1
Abstract:
[Problem] To obtain a higher bit rate with the same chip rate as the related art which can only express one bit with one code string. [Solution] A sensor controller according to the present invention, which is used in a position detection device which detects the position of a pointing device upon a touch screen, comprises: an MCU which outputs a value of a symbol to be transmitted to the pointing device; and a transmitting unit which generates a transmission signal which includes a chip string CN1 which is obtained by cyclically shifting, by a shift quantity based on the value of the symbol to be transmitted, a code string PNa which has autocorrelation characteristics, and transmits the generated transmission signal via the touch screen to the pointing device.
Inventors:
ODA YASUO (JP)
YAMAMOTO SADAO (JP)
YAMAMOTO SADAO (JP)
Application Number:
PCT/JP2016/062325
Publication Date:
February 23, 2017
Filing Date:
April 19, 2016
Export Citation:
Assignee:
WACOM CO LTD (JP)
International Classes:
G06F3/03
Domestic Patent References:
| WO2015002203A1 | 2015-01-08 |
Foreign References:
| JP5762659B1 | 2015-08-12 |
Other References:
HIROSHI SAWAGASHIRA ET AL.: "Permutation Transmission Optical CDMA System with Cyclic- Shifted Sequences", IEICE TECHNICAL REPORT, vol. 101, no. 357, 12 October 2001 (2001-10-12), pages 23 - 29, XP009508767
See also references of EP 3340018A4
See also references of EP 3340018A4
Attorney, Agent or Firm:
WASHIZU Mitsuhiro et al. (JP)
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