JP2007-41143A Feb. 15, 2007
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`CERTIFICATE OF TRANSLATION ACCURACY
`
`I am a professional reviewer and coordinator specializing in translating Asian and
`European languages to English and vice versa.
`I served as Chief Examiner of the certified court interpreter test for the State of California
`and as a translator and interpreter for various federal agencies through the U.S. Department of State
`of for more than a decade. I served as an instructor at the University of California at Berkeley and
`the Middlebury Institute of International Studies at Monterey.
`I have more than 30 years of experience translating thousands of technical, legal, and
`business submitted to, among others, Asian judicial authorities, various U.S. federal courts, the U.S.
`International Trade Commission (ITC), and the USPTO Patent Trial and Appeal Board (PTAB).
`I certify that the following document translated from Japanese to the English language is a
`true, correct, and complete translation of the corresponding source text to the best of my
`knowledge and ability.
`I certify under penalty of perjury that the foregoing is true and correct.
`Executed this 26th day of August 2023 in the Contra Costa County of the State of
`California.
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`By:
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`Alex N. Jo
`Member, ATA
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`Petitioner Samsung Ex-1014, 0001
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`JP2007-41143A Feb. 15, 2007
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`{19) Japanese Patent Office
`(JP)
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`(12) Patent Application Gazette (A)
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`(5l)hlt. Cl
`G09B
`G0lC
`G09B
`G08G
`G06T
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`ID Number
`29/00
`(2006.01)
`21/00
`(2006.01)
`29110
`(2006.01)
`1/005
`(2006.01)
`11/60
`(2006.01)
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`A
`C
`A
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`(21) Filed Application No.: 2005-
`223014 (?2005-223014)
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`(22) Filed: Aug. 1, 2005
`(2005.8.1)
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`(74) Agent or Attorney:
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`(72) Inventor:
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`(72) Inventor:
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`F term (reference)
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`(11) Published Application No.
`JP2007-41143
`(P2007-41143A)
`(43) Published: Feb. 15, 2007
`Theme code (ref.)
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`2C032
`2Fl29
`5B050
`5B069
`5Hl80
`Number of Claims: 8 OL Total ages: 18
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`FI
`29/00
`G09B
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`GOl C
`21/00
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`29/10
`G09B
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`1/005
`G08G
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`11/60
`G06T
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`Re nest for Examination: No
`(71) Applicant:
`303046277
`c/o Asahi Kasei Microdevices Corporation 1-23-7
`Nishi-Shinjuku, Shinjuku-ku, Tokyo, Japan
`100077481
`TANI Yoshikazu Patent Attorney
`NISHIJIMA Junichi
`c/o Asahi Kasei Microdevices Corporation 3050 Okada,
`Atsugi-shi, Kanagawa-ken, Japan
`YAMASHITA Masaya
`c/o Asahi Kasei Microdevices Corporation 3050 Okada,
`Atsugi-shi, Kanagawa-ken, Japan
`2C032 HB22 HCl 1 HC25 HD03
`2Fl29 AA02 BB03 BB19 BB21 BB26 BB29 DD31
`EE02 EE05 EE23 EE52 EE85 EE86 FF12
`HH12
`Continued on last aoe
`(54) [TITLE OF THE INVENTION] MOBILE DEVICE AND DRAWING PROCESSING CONTROL METHOD THEREOF
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`(57) ABSTRACT
`
`[PROBLEM]
`fa accordance with changes to a held orientation state of a dev
`ice, enable switching to low power consumption or optimal m
`ap image display with nosense of discomfort.
`
`fMEANS FOR SOLUTIONSl
`A mobile device where device direction is detected by an azim
`uth angle detecting pa1t 13 and that displays a map image on a
`displaying part based on this direction. The mobile device is p
`rovided with an acceleration detecting part 11 for detecting the
`degree of tilt of the display screen of the displaying pait of th
`e device and an estin1ation calculating pa1t 16 that detennines
`the holding, cai1ying, use state of the device using these detect
`ion results. When the tilt of the device is detected to be outside
`a prescribed angle for a prescribed 3111ount of time, the estima
`tion calculating part 16 detemiines that the device is in a use st
`ate where the pedestrian using the device is not view-ing the111
`ap image and therefore switches to low power consumption by
`halting display calculation processing for the map iniage, ai1d
`writes the map in1age data from prior to the detemiination to r
`etention memo1y, to prepaiꞏe for redisplaying when viewing us
`e state is resumed thereafter.
`Selected Diagr3111: FIG. 1
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`12
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`22
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`17,J' I= :.:.
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`-ꞏꞏ
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`Petitioner Samsung Ex-1014, 0002
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`(2)
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`JP 2007-41143 A 2007.2.15
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`What is claimed is:
`[Claim 1]
`A mobile device that displays drawing on a displaying part of the device according to the device use state, comprising:
`azimuth angle detecting means for detecting azimuth the device faces;
`acceleration detection means for detecting the degree of tilt of the displaying part of the device; and
`device orientation calculation estimating means that calculates and estimates whether the device orientation is in viewing use stat
`e or non-viewing state based on azimuth angle data from the azimuth angle detecting means and acceleration data from the accele
`ration detection means; wherein
`when the orientation of the device is in non-viewing state, the drawing data just prior thereto is retained, drawing processing is h
`alted, and when the orientation of the device is returned to viewing use state, the retained drawing data is used for redisplaying dr
`awing on the displaying part.
`
`[Claim 2]
`The mobile device according to claim 1, further comprising:
`movement amount calculation estimating means that calculates and estimates movement amount of the device based on a change
`pattern of acceleration detected by the acceleration detection means over time; wherein
`when the orientation of the device is returned to viewing use state, the retained drawing data is shifted according to the movemen
`t amount for redisplay.
`[Claim 3]
`The mobile device according to claim 1 or 2, further comprising:
`change amount calculation estimating means that calculates and estimates the amount of change in traveling direction of the devi
`ce based on a change pattern of acceleration detected by the acceleration detection means over time and on a change pattern of th
`e azimuth angle detected by the azimuth angle detecting means; wherein
`when the orientation of the device is returned to viewing use state, the retained drawing data is rotated according to the change a
`mount for redisplay.
`
`[Claim 4]
`The mobile device according to claim 1, 2, or 3, wherein the drawing data is map image data, topographical image data, or navi
`gation information.
`
`[Claim 5]
`A drawing processing control method for a mobile device that displays drawing on a displaying part of the device according to t
`he use state of the device, comprising:
`an azimuth angle detecting step for detecting azimuth the device is facing;
`an acceleration detecting step of detecting the degree of tilt of the displaying part of the device;
`a device orientation calculating and estimating step for calculating and estimating whether the orientation of the device is in view
`ing use state or non-viewing state based on the azimuth angle from the azimuth angle detecting step and the acceleration from the
`acceleration detecting step;
`a calculating step for calculating current position and travel direction of the device; and
`a display control step for displaying drawing of the current position and the travel direction on the displaying part based on the c
`alculation result from the calculating step; wherein
`when the orientation of the device is in non-viewing state, the drawing data just prior thereto is retained, drawing processing is h
`alted, and when the orientation of the device is returned to viewing use state, the retained drawing data is used for redisplaying dr
`awing on the displaying part.
`
`[Claim 6]
`The drawing processing control method for a mobile device according to claim 5, further comprising:
`a movement amount calculating and estimating step for calculating and estimating movement amount of the device based on a ch
`ange pattern of acceleration detected in the acceleration detecting step over time; wherein
`when the orientation of the device is returned to the viewing use state, the retained drawing data is shifted according to the move
`ment amount for redisplay.
`
`[Claim 7]
`The drawing processing control method for a mobile device according to claim 5 or 6, further comprising:
`a change amount calculating and estimating step for calculating and estimating the amount of change in traveling direction of the
`device based on a change patter of acceleration detected in the acceleration detecting step over time and a change pattern of the a
`zimuth angle detected by the azimuth angle detecting means; wherein
`when the orientation of the device is returned to viewing use state, the azimuth of the retained drawing data is rotated according t
`o the change amount for redisplay.
`
`Petitioner Samsung Ex-1014, 0003
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`(3)
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`JP 2007-41143 A 2007.2.15
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`[Claim 8]
`The drawing processing control method for a mobile device according to claim 5, 6, or 7, wherein the drawing data is map imag
`e data, topographical image data, or navigation information.
`
`DETAILED DESCRIPTION OF THE INVENTION
`TECHNICAL FIELD
`[0001]
`The present invention relates to a mobile device equipped with an autonomous navigation device for a pedestrian and to a drawi
`ng processing control method and in more detail, relates to a mobile device equipped with azimuth detecting means such as a geo
`magnetism sensor or the like and acceleration detection means such as an acceleration sensor or the like, and having an autonomo
`us navigation device for a pedestrian that can be used for a walking navigation device installed therein, and to a drawing processi
`ng control method that displays drawing on the displaying part based on the azimuth detected.
`
`CONVENTIONAL TECHNOLOGY
`[0002]
`In recent years small mobile devices, represented by a cell phone, prepared with a GPS (Global Positioning System) function ha
`ve been actively developed. In these devices, there is an application example in which navigation for pedestrians is performed in
`conjunction with a GPS device, map distribution by a mobile phone network or the like, a display application, and the like.
`
`[0003]
`Some mobile devices that provide walking navigation for pedestrians are equipped with azimuth detecting means such as a geo
`magnetism sensor or the like in order to align the traveling direction of the pedestrian with the display of the map. In addition, the
`re are also devices equipped with acceleration detection means such as an acceleration sensor for detecting orientation of the mob
`ile device (detecting and correcting the orientation using acceleration detection means is essential for knowing the correct azimut
`h for an arbitrary orientation).
`
`[0004]
`Autonomous navigation using an azimuth angle sensor and an acceleration sensor is disclosed, for example, in Patent Document
`1 and Patent Document 2. The device in Patent Document 1 is a mobile position detection device that enables improving position
`detection accuracy of the pedestrian, using autonomous navigation (for example, a configuration with a sensor that detects the nu
`mber of steps x stride length, correction of stride length, and movement direction) by changing the stride to match the walking sta
`te, enabling detecting the movement direction of a pedestrian more accurately, even if a GPS signal cannot be received.With the
`mobile position detection device, the amount of steps is used to detect movement position by calculating “number of steps X strid
`e length”, and by correcting the stride length according to walking state from walking time per step using the acceleration sensor
`and detecting the movement direction using the geomagnetism sensor, movement position of the pedestrian can be accurately det
`ected using autonomous navigation. Herein, even in cases of being located in a forest or in a valley between high-rise buildings w
`here a GPS satellite signal cannot be received, the position of a pedestrian carrying a mobile position detection device can readily
`be known with sufficient accuracy for practical use with improved stride length accuracy.
`
`[0005]
`In addition, Patent Document 2 is related to a walking navigation device that measures walking navigation of a pedestrian that
`moves in and out of buildings. This walking navigation device is equipped with a computer and an input device connected to this
`computer is mounted on a waist of the pedestrian. When the pedestrian walks, acceleration in the traveling direction and upward
`direction are detected by a traveling direction accelerometer and an upward direction accelerometer. A central processing unit (C
`PU) provided in the computer calculates a cross‐correlation function from the detection results and compares this with a cross‐cor
`relation function of a horizontal, ascending and descending gait stored in advance in a hard disk (HD). Any one of the walking be
`haviors is used for determination and thus it is possible to readily know that the pedestrian has walked on a path with a small heig
`ht difference such as going up or down stairs.
`
`[0006]
`Patent Document 1: Japanese Unexamined Patent Application 2000-97722
`Patent Document 2: Japanese Unexamined Patent Application 2002-139340
`Patent Document 3: Japanese Unexamined Patent Application 2005-157465
`
`Petitioner Samsung Ex-1014, 0004
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`(4)
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`JP 2007-41143 A 2007.2.15
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`DISCLOSURE OF THE INVENTION
`PROBLEMS TO BE SOLVED BY THE INVENTION
`[0007]
`However, these imposed a certain level of restrictions on the user such as use in a state in a specified orientation such as a mobil
`e device fixed to a waist or requiring calibration after mounting in the case of orientation not being specified.
`[0008]
`In addition, with the mobile device used for this manner of walking navigation, map drawing processing is continued even if the
`device is held in an orientation where the device screen is not being viewed causing a problem of consuming power. In addition,
`there were problems that the orientation angle of the device in a state where the device screen is not being viewed is very differen
`t from the angle when in use so azimuth calculation and drawing processing were very different from actual so just after returning
`to a view position and using, map data in a completely different direction relative to the final direction display while the device
`was being viewed was displayed on the screen.
`
`[0009]
`In light of this manner of problems, an object of the present invention is to provide a mobile device and drawing processing cont
`rol method that enables the mobile device to be held freely while being used for walking navigation, switches to low power consu
`mption based on changes to hold orientation in viewing state or non-viewing state and enables navigation that does not cause stre
`ss to the user through optimal drawing display that does not cause discomfort.
`
`MEANS FOR SOLVING THE PROBLEM
`[0010]
`The present invention is for achieving this manner of object and the invention according to claim 1 is a mobile device that displa
`ys drawing on a displaying part of the device according to the device use state, including:
`azimuth angle detecting means for detecting azimuth the device faces;
`acceleration detection means for detecting the degree of tilt of the displaying part of the device; and
`device orientation calculation estimating means that calculates and estimates whether the device orientation is in viewing use stat
`e or non-viewing state based on azimuth angle data from the azimuth angle detecting means and acceleration data from the accele
`ration detection means; wherein
`when the orientation of the device is in non-viewing state, the drawing data just prior thereto is retained, drawing processing is h
`alted, and when the orientation of the device is returned to viewing use state, the retained drawing data is used for redisplaying dr
`awing on the displaying part.
`
`[0011]
`In addition, the invention according to claim 2 is the invention according to claim 1, further including:
`movement amount calculation estimating means that calculates and estimates movement amount of the device based on a change
`pattern of acceleration detected by the acceleration detection means over time; wherein
`when the orientation of the device is returned to viewing use state, the retained drawing data is shifted according to the movemen
`t amount for redisplay.
`
`[0012]
`In addition, the invention according to claim 3 is the invention according to claim 1 or 2, further including:
`change amount calculation estimating means that calculates and estimates the amount of change in traveling direction of the devi
`ce based on a change pattern of acceleration detected by the acceleration detection means over time and on a change pattern of th
`e azimuth angle detected by the azimuth angle detecting means; wherein
`when the orientation of the device is returned to viewing use state, the retained drawing data is rotated according to the change a
`mount for redisplay.
`
`[0013]
`The invention according to claim 4 is the invention according to claim 1, 2, or 3, wherein the drawing data is map image data, to
`pographical image data, or navigation information. Here, the navigation information refers to various display information such as
`distances to some target points on the route to a preset destination, directions of travel indicated by arrows, and the like.
`[0014]
`
`Petitioner Samsung Ex-1014, 0005
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`

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`(5)
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`JP 2007-41143 A 2007.2.15
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`In addition, the invention according to claim 5 is a drawing processing control method for a mobile device that displays drawing
`on a displaying part of the device according to the use state of the device, including:
`an azimuth angle detecting step for detecting azimuth the device is facing;
`an acceleration detecting step of detecting the degree of tilt of the displaying part of the device;
`a device orientation calculating and estimating step for calculating and estimating whether the orientation of the device is in view
`ing use state or non-viewing state based on the azimuth angle from the azimuth angle detecting step and the acceleration from the
`acceleration detecting step;
`a calculating step for calculating current position and travel direction of the device; and
`a display control step for displaying drawing of the current position and the travel direction on the displaying part based on the c
`alculation result from the calculating step; wherein
`when the orientation of the device is in non-viewing state, the drawing data just prior thereto is retained, drawing processing is h
`alted, and when the orientation of the device is returned to viewing use state, the retained drawing data is used for redisplaying dr
`awing on the displaying part.
`[0015]
`In addition, the invention according to claim 6 is invention according to claim 5, further including:
`a movement amount calculating and estimating step for calculating and estimating movement amount of the device based on a ch
`ange pattern of acceleration detected in the acceleration detecting step over time; wherein
`when the orientation of the device is returned to the viewing use state, the retained drawing data is shifted according to the move
`ment amount for redisplay.
`[0016]
`The invention according to claim 7 is the invention according to claim 5 or 6, further including:
`a change amount calculating and estimating step for calculating and estimating the amount of change in traveling direction of the
`device based on a change patter of acceleration detected in the acceleration detecting step over time and a change pattern of the a
`zimuth angle detected by the azimuth angle detecting means; wherein
`when the orientation of the device is returned to viewing use state, the azimuth of the retained drawing data is rotated according t
`o the change amount for redisplay.
`[0017]
`The invention according to claim 8 is the invention according to claim 5, 6, or 7, wherein the drawing data is map image data, to
`pographical image data, or navigation information.
`[0018]
` In other words, the mobile device of the present invention causes the displaying part of the device to display a drawing based
`on the drawing data according to the usage state of the device, and includes azimuth angle detecting means for detecting the
`azimut h the device is facing, acceleration detection means for detecting tilt of the device, and a calculation estimating part for
`determining the hold, carrying, or usage state of the device based on the detection results. When the tilt of the device is detected
`to be outside a prescribed angle for a prescribed amount of time, the calculation estimating part determines that the device is in a
`use state w here the pedestrian using the device is not viewing the drawing image and therefore switches to low power
`consumption by halting display calculation processing for the drawing data, and writes the drawing data from prior to the
`determination to retention memory, to prepare for redisplaying when viewing use state is resumed thereafter.
`[0019]
`In addition, even in the case of being at a device tilt such that the device is determined to be in a non-viewing state, if the calcula
`tion estimating part detects a prescribed pattern of vibration and oscillation state of the device for a prescribed amount of time or
`more, the pedestrian using the device is determined to be walking and to intend to immediately use azimuth applicable informatio
`n. Therefore, the azimuth angle detecting means and acceleration detection means continue to calculate azimuth angle and acceler
`ation of the device at prescribed intervals and the movement distance and travel direction are calculated based thereon.
`[0020]
` When the calculation estimating part determines that the detected tilt of the device is within a prescribed angle range for a
`prescribed period of time or more, the low power consumption mode is canceled and the drawing data saved in retention memory
`is dis played immediately or this drawing data image is moved according to the walking movement amount and travel direction
`change angle based on detection and calculation data determined while walking.
`[0021]
`In addition, the drawing processing control method of the mobile device of the present invention determines whether or not the
`device orientation angle is within a prescribed range to estimate viewing state or non-viewing state and in the case of estimating n
`on-viewing state, switches to low power consumption by halting display calculation processing, and writes the drawing data from
`prior to the determination to retention memory, to prepare for redisplaying when viewing use state is resumed thereafter.
`
`Petitioner Samsung Ex-1014, 0006
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`(6)
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`JP 2007-41143 A 2007.2.15
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`[0022]
`In addition, device movement is determined to be straight forward movement or path movement, and in the case of straight forw
`ard movement, the retained drawing data is shifted by the movement amount of the device for redisplay, while in the case of path
`movement of the device and returning to viewing use state, the retained drawing data is rotated by the direction change angle acc
`ording to the path movement distance of the device.
`
`[0023]
`Based on calculation and display control in the configuration described above, it is possible to detect the orientation and behavio
`r of the device in space when using walking navigation, determine the state in which the device screen is not being viewed and th
`e pedestrian's walking state, and thus stop unnecessary drawing processing. In addition, since the orientation angle of the device
`when not looking at the device screen is very different from the angle when using the device, the azimuth calculation and drawin
`g processing will be completely different from what is actual. During this time, the drawing processing can be stopped while retai
`ning the drawing data for that time. Immediately after returning to the use state, the drawing data can be moved and redrawn base
`d on the final position where the pedestrian was looking at the device. During various usage actions by the pedestrian, a screen in
`a totally different direction is not displayed while the device is being held in a position for viewing so navigation use that does no
`t cause sense of discomfort can be provided.
`
`[EFFECTS OF THE INVENTION]
`[0024]
`According to the present invention, in walking navigation using a mobile device equipped with azimuth angle detecting means a
`nd acceleration detection means, it is possible to detect whether the device is in a viewing state or non-viewing state such as "loo
`king at the display screen/not looking at the display screen" and switch to low power consumption in response to changes in the s
`tate of the holding orientation of the device, and navigation that does not cause stress to the user by displaying optimal images wi
`th no sense of discomfort can be provided.
`
`[DESCRIPTION OF THE PREFERRED EMBODIMENTS]
`[0025]
`The following is a description of an embodiment of the present invention with reference to the drawings.
`FIG. 1 is a block diagram depicting an equipment configuration in a mobile device according to the present invention and in the
`figure, code 11 represents a 3-axis acceleration detecting part, 12 represents a 3-axis acceleration sensor, 13 represents a 3-axis az
`imuth angle detecting part, 14 represents a 3-axis azimuth angle sensor, 15 represents a central processing unit (CPU), 16 represe
`nts a state calculation estimating part, 16a represents a walking state estimating part, 16b represents a device orientation estimatin
`g part (device orientation calculation estimating means), 16c represents a walking direction estimating part (change amount calcu
`lation estimating means), 16d represents a walking amount estimating part (movement amount calculation estimating means), 17
`represents a calculating part, 18 represents a display controlling part, 19 represents various types of memory, 20 represents displa
`y memory, 21 represents other units, 22 represents a display for displaying, and 23 represents a pedometer.
`
`[0026]
`The 3-axis acceleration detecting part 11 has the 3-axis acceleration sensor 12 for detecting tilt and motion (acceleration) of the
`mobile device incorporated therein and the 3-axis azimuth angle detecting part 13 has the 3-axis azimuth angle sensor 14 for dete
`cting geomagnetism incorporated therein. The 3-axis azimuth angle sensor 14 responds to geomagnetism and a direction angle inf
`ormation signal that is output accordingly is periodically captured into the 3-axis azimuth angle detecting part 13, which then gen
`erates data indicating facing direction on a screen part of a device displaying a map image.
`
`[0027]
`In addition, the central processing unit (CPU) 15 performs control and calculation for the mobile device, receives 3-axis acceler
`ation data from the 3-axis acceleration detecting part 11 and 3-axis azimuth angle data from the 3-axis azimuth angle detecting pa
`rt 13, and integrates dedicated software for the calculation estimating part 16 that calculates orientation angle, motion, advancing
`direction, and azimuth direction of the device itself, the calculating part 17 that calculates current position and traveling direction
`of the pedestrian based on information the calculation estimating results from this calculation estimating part 16, GPS, and infor
`mation from other units 21, and the display controlling part 18 that performs processing for drawing on the screen displaying a m
`ap image according to the calculation results from the calculating part 17.
`[0028]
`
`Petitioner Samsung Ex-1014, 0007
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`(7)
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`JP 2007-41143 A 2007.2.15
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`Various types of memory 19 such as ROM and RAM are provided for this software, and various types of controllers, I/O, other
`units 21, and the like are also controlled by the CPU 15. The display memory 20 stores map image data for displaying on the disp
`lay screen and this map image data itself is retained and used in conjunction with various memory mechanisms 19 through data di
`stribution and the like using physical integration or communication means with the mobile device. The display for displaying 22 i
`s for providing display for the mobile device such as a liquid crystal displaying part.
`[0029]
`The calculation estimating part 16 includes:
`a walking state estimating part 16a that estimates the walking state of the pedestrian, in other words, whether the state is a device
`orientation fixed state or swing state based on the 3-axis acceleration data from the 3-axis acceleration detecting part 11 and 3-ax
`is azimuth angle data from the 3-axis azimuth angle detecting part 13;
`a device orientation estimating part 16b that estimates orientation of the device whether in a viewing use state or a non-viewing s
`tate;
`a walking direction estimating part 16c that estimates walking direction of the pedestrian, in other words whether straight forwar
`d movement or moving along a path based on data from the walking state estimating part 16a and the device orientation estimatin
`g part 16b; and
`a walking amount estimating part 16d that estimates walking amount from step count data and stride data from the pedometer 2
`3; and
`is configured such that the calculation estimating results data from the calculation estimating part 16 is input into the calculating
`part 17.
`[0030]
`In addition, the pedometer 23 is provided in the CPU 15 and this pedometer 23 calculates the number of steps of the pedestrian
`based on the 3-axis acceleration data from the 3-axis acceleration detecting part 11 and the 3-axis azimuth angle data from the 3-a
`xis azimuth angle detecting part 13 and this number of steps data is input to the calculating part 17 and the walking amount estim
`ating part 16d. Note that the stride data is pre-set by the pedestrian, is stored in the various types of memory 19, and read for use
`when estimating walking amount.
`[0031]
`In this manner, the mobile device of the present invention is a mobile device that detects direction of the device using the azimut
`h angle detecting part 13 and displays map image data on the displaying part of the device based on the detected direction of the d
`evice. The acceleration detecting part 11 detects the degree of tilt of the display surface of the displaying part of the device. The d
`evice orientation calculation estimating part 16b estimates whether the orientation of the device is in a viewing use state or in a n
`on-viewing state based on the azimuth angle data from the azimuth angle detecting part 13 and the acceleration data from the acc
`eleration detecting part 11.
`
`[0032]
`The device is configured so that when the orientation is in the non-viewing state, the previous map image data is retained and dr
`awing processing is stopped, and when the orientation of the device is returned to viewing use state, the retained map image data
`is used to redisplay the map image on the displaying part. Note that when drawing processing is paused and calculation processin
`g or new drawing operation of drawing itself is paused, there are cases where additionally, display accompaniment means such as
`a backlight is stopped, or darkened, for lower power consumption.
`[0033]
`In addition, a walking amount estimating part 16d is provided for calculating and estimating the amount of movement of the dev
`ice based on the change pattern over time of acceleration detected by the acceleration detecting part 11 so that when the orientatio
`n of the device is restored to viewing use state, the retained map image data can be shifted according to the movement amount for
`redisplay.
`
`[0034]
`In addition, a walking direction estimating part 16c is provided to calculate and estimate a change amount of the device in the tr
`aveling direction based on the change pattern over time of the acceleration detected by the acceleration detecting part 11 and the
`change pattern of the azimuth angle detected by the azimuth angle detecting part 13 so that when the orientation of the device is r
`eturned to viewing use state, the retained map image data can be redisplayed rotated in the direction according to the amount of c
`hange in the traveling direction.
`[0035]
`Next, map drawing processing on the screen of the mobile device of the present invention composed of the configuration depict
`ed in FIG. 1 will be described.
`[0036]
`
`Petitioner Samsung Ex-1014, 0008
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`(8)
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`JP 2007-41143 A 2007.2.15
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`FIG. 2 is a diagram depicting as a flowchart, a procedure for performing map drawing processing according to the orientation of
`the mobile device by detecting the degree of tilt and direction of the display screen of the walking navigation information display
`ing part using the mobile device equipped w