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Digital instrument controller

An integer, sinusoidal signal technology, applied in digital technology network, electrical digital data processing, instruments, etc., can solve the problem of large size and power of the device

Inactive Publication Date: 2003-06-04
SAMSUNG ELECTRONICS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

In addition, because the digitizer control device is implemented with discrete circuit devices, the volume and power of the device are relatively large

Method used

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Embodiment Construction

[0066] Fig. 1 is a schematic diagram of a digitizer control device as a preferred embodiment of the present invention. In Fig. 1, the reference number 100 represents the digitizer control device proposed by the present invention, the reference number 200 represents a panel, and the reference number 300 represents a recording pen.

[0067] The digitizer control device 100 includes: a panel driving signal generator 10, a reference voltage generator 12, a first multiplexer (MUX) 14, a four-channel panel driver 16, a current-voltage converter 18, a differential amplifier 20, a first Two multiplexers 22, a preamplifier 24, a third multiplexer 26, a bandpass filter (BPF) 28, a rectifier 30, a digital-to-analog (D / A) converter 32, a fourth multiplexer A device 34, a fifth multiplexer 36, a low-pass filter (LPF) 38, a direct current (DC0) amplifier 40, a sixth multiplexer 42, an analog-to-digital (A / D) converter 44, and an interface Section 46.

[0068] The panel drive signal genera...

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Abstract

A digitizer controller includes a panel drive signal generator (10), a reference voltage generator (12), a first multiplexer (14) for selectively outputting either a panel drive signal or a reference voltage signal, a 4-channel driving portion (16) for generating a channel driving signal which is provided to each corner of a panel, a third multiplexer (26) for selectively outputting one of the finger touch signals and a stylus signal output from a stylus, a band pass filter, a rectifier (30) for rectifying the output of the band pass filter, a low pass filter (38) for detecting a substantial direct current component from the output of the rectifier (30), an analog-to-digital converter (44) for outputting the output of the low pass filter in synchronization with a panel driving control signal as a coordinates signal, and an interface (46). Therefore, the digitizer controller can be adopted to each of the stylus, finger touch and touch panel type digitizers, and in implementing a semiconductor integrated circuit, reliability is provided and power consumption is lowered.

Description

[0001] This application is a divisional application of the application entitled "Digitizer Control Device" filed on December 12, 1997 with the application number 96194766.7. technical field [0002] The present invention relates to digitizer controller (digitizer controller), in particular, can be used for input pen type (stylus type), finger touch type (finger touch type) and touch panel type (touch panel type) that can realize with semiconductor integrated circuit. panel type) digitizer digitizer controls. Background technique [0003] Personal computers, portable transmitters, personal processors, etc. all utilize input devices such as keyboards, mice or digitizers to process text or graphic data. [0004] The digitizer is used to digitally detect the position of the pen or finger on a special flat panel, and output the X and Y coordinates of the position; compared with the commonly used mouse, keyboard or scanner, it is convenient and convenient The advantage of precisi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F3/041G06F3/045G06F3/0488
CPCG06F3/045H03H17/02
Inventor 金度润安秉权
Owner SAMSUNG ELECTRONICS CO LTD