# US 8,149,193 B2 · Image input detection apparatus and storing medium > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 8,149,193 B2 - Document ID: US8149193B2 - Status: Granted - Kind: B2 - Application number: 12/388,539 - Filed: 2009-02-19 - Published: 2010-04-01 - Granted: 2012-04-03 - Earliest claimed: 2008-09-26 - Assignees: Fuji Xerox Co., Ltd. - Inventors: Kyotaro Tomoda; Tsutomu Ishii; Yasunori Saito; Shigehiko Sasaki; Akira Ichiboshi; Masahiro Sato - Web page: https://patentgrep.com/patent/US8149193B2 ## CPC - G06F 3/0412: {Digitisers structurally integrated in a display} - G06F 3/0416: {Control or interface arrangements specially adapted for digitisers} - G06F 3/042: by opto-electronic means - G09G 3/344: {based on particles moving in a fluid or in a gas, e.g. electrophoretic devices (electrophoretic devices per se G02F1/167)} - G09G 3/20: for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix {no fixed position being assigned to or needed to be assigned to the individual characters or partial characters} - G09G 2310/068: Application of pulses of alternating polarity prior to the drive pulse in electrophoretic displays - G06F: ELECTRIC DIGITAL DATA PROCESSING (computer systems based on specific computational models G06N) - G09G: ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION (arrangements for transferring data between digital computers and displays G06F3/14; static indicating arrangements comprising an association of a number of separate sources or light control cells G09F9/00; static indicating arrangements comprising integral associations of a number of light sources H01J, H01K, H10H, H05B33/12; scanning, transmission or reproduction of documents or the like, e.g. facsimile transmission, details thereof H04N1/00) ## Abstract An image input detection apparatus comprises: a voltage applier that applies a voltage of a predetermined waveform to a display medium; a first acquisition unit that acquires a vibration waveform generated in the display medium; a first memory that stores a vibration waveform determined based on the waveform of the voltage applied by the voltage applier; and a second memory that stores information representing that an image written on the display medium has been overwritten, when the difference between the waveform acquired by the first acquisition unit and the waveform stored in the first memory lies within a threshold value. ## Claims ### Claim 1 An image input detection apparatus comprising: a voltage applier that applies a voltage of a predetermined waveform to a display medium; a first acquisition unit that acquires a vibration waveform generated in the display medium; a first memory that stores a vibration waveform determined based on the waveform of the voltage applied by the voltage applier; and a second memory that stores information representing that an image written on the display medium has been overwritten, when the difference between the waveform acquired by the first acquisition unit and the waveform stored in the first memory lies within a threshold value. ### Claim 2 (depends on 1) The image input detection apparatus according to claim 1, further comprising a second acquisition unit that acquires a vibration waveform generated in a writing device which writes an image on the display medium, wherein the second memory further stores information representing that an image written on the display medium has been overwritten, when the difference between a waveform obtained by subtracting the waveform acquired by the second acquisition unit from the waveform acquired by the first acquisition unit and the waveform stored in the first memory lies within a threshold value. ### Claim 3 (depends on 1, 2) The image input detection apparatus according to claim 1 or 2, wherein: the second memory further stores an identifier that identifies the image and an indicator indicating whether the image identified by the identifier has been overwritten on the display medium, and the second memory further stores information that an image written in the display medium has been overwritten, when the image is overwritten in a case where the indicator for the image indicates that the image has been overwritten. ### Claim 4 (depends on 1, 2) The image input detection apparatus according to claim 1 or 2, further comprising an output unit that outputs the information that an image written on the display medium has been overwritten, when the image is overwritten. ### Claim 5 (depends on 3) The image input detection apparatus according to claim 3, further comprising an output unit that outputs the information that an image written on the display medium has been overwritten, when the image is overwritten. ### Claim 6 A non-transitory storing medium that stores a computer program to cause a computer to execute: applying a voltage of a predetermined waveform to a display medium and acquiring a vibration waveform generated in the display medium; storing a waveform determined based on the waveform of an applied voltage in a memory; and storing information that an image written on the display medium has been overwritten, when the difference between the acquired waveform and the waveform stored in the memory lies within a threshold value.