{"id":2292,"date":"2026-07-13T16:08:09","date_gmt":"2026-07-13T07:08:09","guid":{"rendered":"https:\/\/iotpaper.wacom.one\/wdprs\/?page_id=2292"},"modified":"2026-08-21T11:09:15","modified_gmt":"2026-08-21T02:09:15","slug":"wacom-emr-technology-2","status":"publish","type":"page","link":"https:\/\/iotpaper.wacom.one\/wdprs\/en\/wacom-emr-technology-2\/","title":{"rendered":"Wacom EMR\u00a0Technology_en"},"content":{"rendered":"\n<div class=\"wp-block-cover alignfull is-light\" style=\"padding-top:0px;padding-right:1.5rem;padding-bottom:0px;padding-left:1.5rem;min-height:683px;aspect-ratio:unset;\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"427\" class=\"wp-block-cover__image-background wp-image-1749 size-large\" alt=\"\" src=\"https:\/\/iotpaper.wacom.one\/wdprs\/wp-content\/uploads\/2026\/06\/20260604_WacomOne_2508060282_3-1024x427.webp\" style=\"object-position:25% 61%\" data-object-fit=\"cover\" data-object-position=\"25% 61%\" srcset=\"https:\/\/iotpaper.wacom.one\/wdprs\/wp-content\/uploads\/2026\/06\/20260604_WacomOne_2508060282_3-1024x427.webp 1024w, https:\/\/iotpaper.wacom.one\/wdprs\/wp-content\/uploads\/2026\/06\/20260604_WacomOne_2508060282_3-300x125.webp 300w, https:\/\/iotpaper.wacom.one\/wdprs\/wp-content\/uploads\/2026\/06\/20260604_WacomOne_2508060282_3-768x320.webp 768w, https:\/\/iotpaper.wacom.one\/wdprs\/wp-content\/uploads\/2026\/06\/20260604_WacomOne_2508060282_3-1536x640.webp 1536w, https:\/\/iotpaper.wacom.one\/wdprs\/wp-content\/uploads\/2026\/06\/20260604_WacomOne_2508060282_3.webp 1920w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><span aria-hidden=\"true\" class=\"wp-block-cover__background has-white-background-color has-background-dim-30 has-background-dim\"><\/span><div class=\"wp-block-cover__inner-container is-layout-constrained wp-container-core-cover-is-layout-1583386c wp-block-cover-is-layout-constrained\">\n<div class=\"wp-block-vk-blocks-spacer vk_spacer vk_spacer-type-height vk_spacer-type-margin-top\"><div class=\"vk_block-margin-lg--height\"><\/div><\/div>\n\n\n\n<div class=\"wp-block-columns vk_block-margin-0--margin-bottom is-vk-row-reverse is-layout-flex wp-container-core-columns-is-layout-72d1a509 wp-block-columns-is-layout-flex\" style=\"padding-right:0px;padding-left:0px\">\n<div class=\"wp-block-column is-vertically-aligned-center is-layout-flow wp-block-column-is-layout-flow\" style=\"flex-basis:45%\">\n<figure class=\"wp-block-image alignright size-full is-resized vk-aligncenter--mobile\"><a href=\"https:\/\/iotpaper.wacom.one\/wdprs\/wp-content\/uploads\/2026\/06\/20260605_Overhead-with-pen-below-3-scaled.png\"><img loading=\"lazy\" decoding=\"async\" width=\"2560\" height=\"1817\" src=\"https:\/\/iotpaper.wacom.one\/wdprs\/wp-content\/uploads\/2026\/06\/20260605_Overhead-with-pen-below-3-scaled.png\" alt=\"\" class=\"wp-image-1754\" style=\"width:1500px\" srcset=\"https:\/\/iotpaper.wacom.one\/wdprs\/wp-content\/uploads\/2026\/06\/20260605_Overhead-with-pen-below-3-scaled.png 2560w, https:\/\/iotpaper.wacom.one\/wdprs\/wp-content\/uploads\/2026\/06\/20260605_Overhead-with-pen-below-3-300x213.png 300w, https:\/\/iotpaper.wacom.one\/wdprs\/wp-content\/uploads\/2026\/06\/20260605_Overhead-with-pen-below-3-1024x727.png 1024w, https:\/\/iotpaper.wacom.one\/wdprs\/wp-content\/uploads\/2026\/06\/20260605_Overhead-with-pen-below-3-768x545.png 768w, https:\/\/iotpaper.wacom.one\/wdprs\/wp-content\/uploads\/2026\/06\/20260605_Overhead-with-pen-below-3-1536x1090.png 1536w, https:\/\/iotpaper.wacom.one\/wdprs\/wp-content\/uploads\/2026\/06\/20260605_Overhead-with-pen-below-3-2048x1454.png 2048w\" sizes=\"auto, (max-width: 2560px) 100vw, 2560px\" \/><\/a><\/figure>\n<\/div>\n\n\n\n<div class=\"wp-block-column is-vertically-aligned-center is-layout-flow wp-block-column-is-layout-flow\" style=\"flex-basis:55%\">\n<div class=\"wp-block-group is-layout-constrained wp-block-group-is-layout-constrained\">\n<figure class=\"wp-block-image size-large is-resized\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"132\" src=\"https:\/\/iotpaper.wacom.one\/wdprs\/wp-content\/uploads\/2026\/06\/8d431671a87fb209af780c55517d8aee-1024x132.png\" alt=\"\" class=\"wp-image-1728\" style=\"width:570px\" srcset=\"https:\/\/iotpaper.wacom.one\/wdprs\/wp-content\/uploads\/2026\/06\/8d431671a87fb209af780c55517d8aee-1024x132.png 1024w, https:\/\/iotpaper.wacom.one\/wdprs\/wp-content\/uploads\/2026\/06\/8d431671a87fb209af780c55517d8aee-300x39.png 300w, https:\/\/iotpaper.wacom.one\/wdprs\/wp-content\/uploads\/2026\/06\/8d431671a87fb209af780c55517d8aee-768x99.png 768w, https:\/\/iotpaper.wacom.one\/wdprs\/wp-content\/uploads\/2026\/06\/8d431671a87fb209af780c55517d8aee-1536x198.png 1536w, https:\/\/iotpaper.wacom.one\/wdprs\/wp-content\/uploads\/2026\/06\/8d431671a87fb209af780c55517d8aee-2048x263.png 2048w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/figure>\n<\/div>\n\n\n\n<p class=\"is-style-vk-heading-plain vk_block-margin-sm--margin-bottom vk_block-margin-0--margin-top has-black-color has-text-color has-link-color wp-elements-7ce4b5dbe7a31bd612955c06ec0197d6\" id=\"\u30b3\u30f3\u30bb\u30d7\u30c8\u3084\u30ad\u30e3\u30c3\u30c1\u30b3\u30d4\u30fc-1\" style=\"padding-top:var(--wp--preset--spacing--40);font-size:26px;font-style:normal;font-weight:500;line-height:1.4\">Our EMR technology which our company originally patented has proven to be a basis for development of graphics applications, since the beginning of computer graphics.<br>It has already become the de facto standard pen input for professional creators.<\/p>\n\n\n\n<p class=\"vk_block-margin-sm--margin-bottom has-black-color has-text-color has-link-color wp-elements-b912edd4760e08cc01c0a41d13063130\" style=\"padding-top:var(--wp--preset--spacing--30);font-style:normal;font-weight:500\"><meta charset=\"utf-8\"><\/meta>\u30fbPrecise pen coordinate detection<br>\u30fbPrecise pen pressure detection<br>\u30fbPrecise pen hovering height detection<br>\u30fbBattery free, slim pen available<br>\u30fbFlexibility in pen nib selection<br>(no need to be electrically conductive)<\/p>\n<\/div>\n<\/div>\n\n\n\n<div class=\"wp-block-vk-blocks-spacer vk_spacer vk_spacer-type-height vk_spacer-type-margin-top\"><div class=\"vk_block-margin-lg--height\"><\/div><\/div>\n<\/div><\/div>\n\n\n\n<style type=\"text\/css\">\r\n\/* \u3059\u308a\u30ac\u30e9\u30b9 *\/\r\n.vkp_filter_blur{\r\nbackdrop-filter: blur(5px);\r\n-webkit-backdrop-filter: blur(5px);  \r\nbackground: rgba(255,255,255,0.3); \/* \u534a\u900f\u660e *\/\r\nborder-radius: 2rem; \/* \u89d2\u4e38 *\/\r\nbox-shadow: rgba(0, 0, 0, 0.1) 0px 0px 10px; \/* \u5f71 *\/\r\nmax-width:600px; \/* \u6700\u5927\u5e45 *\/\r\nmargin:0 auto; \/* \u4e2d\u592e\u63c3\u3048 *\/\r\n}\r\n\/* \u7dda *\/\r\n.vkp_hr_short{\r\n width: 3rem;\r\n height: 2px;\r\n}\r\n<\/style>\n\n\n\n<div class=\"wp-block-columns is-layout-flex wp-container-core-columns-is-layout-6b2efde7 wp-block-columns-is-layout-flex\" style=\"padding-top:var(--wp--preset--spacing--70)\">\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\" style=\"flex-basis:50%\">\n<p style=\"font-size:38px;font-style:normal;font-weight:500;line-height:1.4\">Digitizing Board Structure<\/p>\n\n\n\n<p style=\"font-style:normal;font-weight:500\">\u3000The structure of Wacom EMR digitizing boards is quite simple. The main parts are a sensor grid board, a magnetic sheet and a controller ASIC.<br>\u3000The sensor grid board has many rectangular coils which work like a transformer primary coil, to transmit and receive magnetic energy to and from the secondary coil in the pen. The magnetic sheet acts as the conductor of magnetic flux between the sensor grid board and the pen.<br>\u3000Wacom has been developing EMR controller ASICs for over thirty years. The capability to design analog and digital mixed-signal ASICs is one of our strengths.<\/p>\n<\/div>\n\n\n\n<div class=\"wp-block-column is-vertically-aligned-center is-layout-flow wp-block-column-is-layout-flow\" style=\"flex-basis:50%\">\n<figure class=\"wp-block-image size-full is-resized\"><img loading=\"lazy\" decoding=\"async\" width=\"1984\" height=\"797\" src=\"https:\/\/iotpaper.wacom.one\/wdprs\/wp-content\/uploads\/2026\/08\/9b7d8b7e452313d361d76acb31231563.png\" alt=\"\" class=\"wp-image-2595\" style=\"width:900px\"\/><\/figure>\n<\/div>\n<\/div>\n\n\n\n<div class=\"wp-block-columns is-layout-flex wp-container-core-columns-is-layout-7296d113 wp-block-columns-is-layout-flex\" style=\"padding-top:var(--wp--preset--spacing--50)\">\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\" style=\"flex-basis:50%\">\n<p style=\"font-size:38px;font-style:normal;font-weight:500;line-height:1.4\">Pen Structure and Pressure Detection<\/p>\n\n\n\n<p>\u3000Below is the structure and the equivalent circuit diagram of the electronic pen. The resonance circuits for the pen portion and the eraser portion are independent of each other.\u3000<br>\u3000The controller ASIC recognizes the difference between the pen and the eraser based upon the resonance frequency. It also recognizes the pen pressure exerted on the surface of the tablet by detecting the frequency drift, which is caused by the value change of the VC capacitor sensor.<\/p>\n<\/div>\n\n\n\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\" style=\"flex-basis:50%\">\n<figure class=\"wp-block-image size-full is-resized\"><img loading=\"lazy\" decoding=\"async\" width=\"1541\" height=\"2166\" src=\"https:\/\/iotpaper.wacom.one\/wdprs\/wp-content\/uploads\/2026\/08\/1e91a860b3ecb374ccea7de9f13a9f88.png\" alt=\"\" class=\"wp-image-2599\" style=\"width:900px\"\/><\/figure>\n<\/div>\n<\/div>\n\n\n\n<div class=\"wp-block-group is-layout-constrained wp-block-group-is-layout-constrained\" style=\"padding-top:var(--wp--preset--spacing--70)\">\n<p style=\"font-size:38px;font-style:normal;font-weight:500;line-height:1.4\">EMR Digitizer Controller ASIC Block Diagram<\/p>\n\n\n\n<figure class=\"wp-block-image aligncenter size-full is-resized\" style=\"margin-bottom:var(--wp--preset--spacing--40)\"><img loading=\"lazy\" decoding=\"async\" width=\"3346\" height=\"977\" src=\"https:\/\/iotpaper.wacom.one\/wdprs\/wp-content\/uploads\/2026\/08\/680acd7c775efbb1ba170fe25b7dc65d.png\" alt=\"\" class=\"wp-image-2600\" style=\"width:821px;height:auto\"\/><\/figure>\n\n\n\n<p>\u3000This is the block diagram for the EMR digitizing board controller ASIC. The controller ASIC is comprised of a microcontroller unit (MCU) core, a digital signal processing unit, an analog-to-digital converter (ADC), a digital-to-analog converter (DAC), a current driver and numerous analog switches.<br>\u3000The DAC outputs the wave form to drive one of the digitizing board coils. Then the ADC digitizes the wave form from the same digitizing board coil. &nbsp;<\/p>\n<\/div>\n\n\n\n<div class=\"wp-block-group is-layout-constrained wp-block-group-is-layout-constrained\" style=\"padding-top:var(--wp--preset--spacing--70)\">\n<p style=\"font-size:38px;font-style:normal;font-weight:500;line-height:1.4\">Transmission and Reception Operations Utilizing Electromagnetic Resonance (EMR)<\/p>\n\n\n\n<div class=\"wp-block-columns is-layout-flex wp-container-core-columns-is-layout-7503d02c wp-block-columns-is-layout-flex\">\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\" style=\"flex-basis:50%\">\n<p>\u3000This page explains the \u201celectromagnetic energy reception by the pen while in the excited magnetic field mode\u201d, through our company\u2019s EMR principle.<br>\u3000The controller ASIC selects one of the grid board coils, and drives an AC current of the same frequency as the pen\u2019s resonance frequency to the coil.<br>\u3000The grid board coil and the coil in the pen function like a primary coil and secondary coil consecutively, so the voltage generated at both ends of the coil of the electronic pen causes the resonance circuit of the pen to resonate and store electrical energy.<\/p>\n<\/div>\n\n\n\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\" style=\"flex-basis:50%\">\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"2067\" height=\"1371\" src=\"https:\/\/iotpaper.wacom.one\/wdprs\/wp-content\/uploads\/2026\/08\/493ffcef1cde107ac618f98b1ed4280b.png\" alt=\"\" class=\"wp-image-2601\"\/><\/figure>\n<\/div>\n<\/div>\n\n\n\n<div class=\"wp-block-columns is-layout-flex wp-container-core-columns-is-layout-7296d113 wp-block-columns-is-layout-flex\" style=\"padding-top:var(--wp--preset--spacing--50)\">\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\" style=\"flex-basis:50%\">\n<p>\u3000Once the pen starts resonating, thereby storing electrical energy. the controller ASIC switches to the \u201creception mode\u201d to receive energy from the pen.<br>\u3000The amplitude of the detected signal (see the lower right chart) represents the distance between the grid board coil and the pen coil.<br>\u3000The resonant energy from the pen is returned to the grid board coil, with the coil in the pen functioning like the primary coil, and the grid board coil acting as the secondary coil.<br>\u3000By detecting this voltage, the presence of the pen above the grid board coil is detected.<br>\u3000The analog multiplexer switches the grid board coil to scan the whole screen area sequentially, and creates a map of the detected signal strengths.<\/p>\n<\/div>\n\n\n\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\" style=\"flex-basis:50%\">\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"2067\" height=\"1371\" src=\"https:\/\/iotpaper.wacom.one\/wdprs\/wp-content\/uploads\/2026\/08\/3541f931dba2eeeb034fd8b8f62f83ed.png\" alt=\"\" class=\"wp-image-2602\"\/><\/figure>\n<\/div>\n<\/div>\n<\/div>\n\n\n\n<div class=\"wp-block-group is-layout-constrained wp-block-group-is-layout-constrained\" style=\"padding-top:var(--wp--preset--spacing--70)\">\n<div class=\"wp-block-columns is-layout-flex wp-container-core-columns-is-layout-7503d02c wp-block-columns-is-layout-flex\">\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\" style=\"flex-basis:50%\">\n<p style=\"font-size:38px;font-style:normal;font-weight:500;line-height:1.4\">Producing Pen Coordinates<\/p>\n\n\n\n<p>\u3000This animation demonstrates how the exact position of the EMR pen is calculated.<br>\u3000As explained in the previous page, the controller ASIC scans all the coils to derive each signal\u2019s strength.<br>\u3000The calculation algorithm interprets this signal strength dispersion as a quadratic curve, and differentiates it to determine the exact position of the pen.<\/p>\n\n\n\n<p style=\"font-size:20px;font-style:normal;font-weight:600\">Basic Algorithm to Calculate the Coordinate Values:<\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li>Measure the pen signal strength of each antenna by switching between the antennas, in the order of the antenna arrangement;<\/li>\n\n\n\n<li>Approximate with the above-mentioned quadratic curve;<\/li>\n\n\n\n<li>Derive the quadratic curve\u2019s peak position by the differentiation, to determine the pen\u2019s coordinates.<\/li>\n<\/ol>\n<\/div>\n\n\n\n<div class=\"wp-block-column is-vertically-aligned-center is-layout-flow wp-block-column-is-layout-flow\" style=\"flex-basis:50%\">\n<figure class=\"wp-block-video aligncenter\" style=\"padding-top:0;padding-right:var(--wp--preset--spacing--70);padding-bottom:0;padding-left:var(--wp--preset--spacing--70)\"><video height=\"706\" style=\"aspect-ratio: 928 \/ 706;\" width=\"928\" controls src=\"https:\/\/iotpaper.wacom.one\/wdprs\/wp-content\/uploads\/2026\/05\/EMR.mov\"><\/video><\/figure>\n<\/div>\n<\/div>\n<\/div>\n","protected":false},"excerpt":{"rendered":"<p>Digitizing Board Structure \u3000The structure of Wacom EMR digitizing boards is quite simple. The main parts are a [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"parent":0,"menu_order":16,"comment_status":"closed","ping_status":"closed","template":"","meta":{"sns_share_botton_hide":"","vkExUnit_sns_title":"","_vk_print_noindex":"","sitemap_hide":"","vkExUnit_sitemap":"","_veu_custom_css":"","veu_display_promotion_alert":"","_exclude_from_list_pages":"","vkexunit_cta_each_option":"","vkExUnit_childPageIndex":"","vkExUnit_pageList_ancestor":"","vkExUnit_contact_enable":"","_lightning_design_setting":{"layout":"col-one-no-subsection"},"footnotes":""},"class_list":["post-2292","page","type-page","status-publish","hentry"],"veu_head_title_object":{"title":"","add_site_title":""},"_links":{"self":[{"href":"https:\/\/iotpaper.wacom.one\/wdprs\/wp-json\/wp\/v2\/pages\/2292","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/iotpaper.wacom.one\/wdprs\/wp-json\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/iotpaper.wacom.one\/wdprs\/wp-json\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/iotpaper.wacom.one\/wdprs\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/iotpaper.wacom.one\/wdprs\/wp-json\/wp\/v2\/comments?post=2292"}],"version-history":[{"count":19,"href":"https:\/\/iotpaper.wacom.one\/wdprs\/wp-json\/wp\/v2\/pages\/2292\/revisions"}],"predecessor-version":[{"id":2603,"href":"https:\/\/iotpaper.wacom.one\/wdprs\/wp-json\/wp\/v2\/pages\/2292\/revisions\/2603"}],"wp:attachment":[{"href":"https:\/\/iotpaper.wacom.one\/wdprs\/wp-json\/wp\/v2\/media?parent=2292"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}