, on many occasions, a pen-shaped input apparatus employing a tablet and pen have been adopted as the input apparatus for a portable terminal instrument. However, it is difficult to reduce the size of the tablet.
To overcome the problem of tablet size, tabletless input apparatuses have been developed such as, for instance, a pen-shaped computer input apparatus as disclosed in Japanese Laid-open Patent Publication No. 6-67799/1994, a data input apparatus as disclosed in Japanese Laid-open Patent Publication No. 7-84716/1995, a handwriting input apparatus as disclosed in Japanese Laid-open Patent Publication No. 7-200127/1995, and a pencil-shaped input apparatus as disclosed in Japanese Laid-open Patent Publication No. 6-230886/1994.
The pen-shaped computer input apparatus disclosed in Japanese Laid-open Patent Publication No. 6-67799/1994 senses the movement direction and the movement amount of the input apparatus by use of an acceleration sensor and then compensates for an influence exerted on the movement direction and the movement amount sensed by the acceleration sensor by the action of the pen-shaped computer input apparatus' rotation by use of a piezoelectric vibration gyroscope.
Furthermore, the data input apparatus disclosed in Japanese Laid-open Patent Publication No. 7-84716/1995 senses the movement direction and the movement amount of the apparatus on the basis of signals showing the polarity and the amplitude respectively transmitted from vibration gyroscopes perpendicularly disposed to each other.
Furthermore, the handwriting input apparatus disclosed in Japanese Laid-open Patent Publication No. 7-200127/1995 obtains a movement direction and a movement distance (amount) on the basis of the signals respectively transmitted from two acceleration sensors.
Furthermore, the pencil-shaped input apparatus disclosed in Japanese Laid-open Patent Publication No. 6-230886/1994 disposes a couple of acceleration sensors on different positions of the pen shaft, and obtains a movement direction and a movement distance of the pen's tip end. In this apparatus, the influence due to the mounting position of the acceleration sensors is compensated on the basis of the output from the couple of acceleration sensors.
And further, a position sensor disclosed in the published specification of Japanese Laid-open Patent Publication No. 7-294240/1995, which does not directly relate to the pen-shaped input apparatus is used, for instance, in a game machine for sensing the moving speed, position and attitude of the head portion of human body, and the position sensor comprises acceleration sensors for respectively
, on many occasions, a pen - shaped input apparatus use a pad and pen have been adopted as the input apparatus for a portable concluding instrument. However, it is difficult to reduce the size of the pad. 
 To overcome the problem of pad size, tabletless input apparatuses have been develop such as, for instance, a penitentiary - shape computer input apparatus as disclosed in Japanese Laid - open Patent Publication No. 6 - 67799/1994, a data input signal apparatus as disclosed in Japanese Laid - open Patent Publication No. 7 - 84716/1995, a handwriting input apparatus as disclose in Japanese Laid - open Patent Publication No. 7 - 200127/1995, and a pencil - shaped input apparatus as disclosed in Japanese Laid - exposed Patent Publication No. 6 - 230886/1994. 
 The pen - shaped computer input apparatus disclosed in Japanese Laid - clear Patent Publication No. 6 - 67799/1994 senses the movement direction and the movement amount of the input apparatus by use of an acceleration sensor and then compensates for an influence exerted on the movement direction and the movement amount sensed by the acceleration sensor by the action of the playpen - shaped computer stimulation apparatus' rotation by use of a piezoelectric vibration gyroscope. 
 Furthermore, the data input apparatus unwrap in Japanese Laid - open Patent Publication No. 7 - 84716/1995 senses the movement direction and the drift amount of the apparatus on the basis of signals showing the polarity and the amplitude respectively impart from vibration gyroscopes perpendicularly disposed to each early. 
 Furthermore, the handwriting input apparatus disclose in Japanese Laid - clear Patent Publication No. 7 - 200127/1995 obtains a movement direction and a movement distance (sum) on the basis of the signals respectively transmitted from two acceleration detector. 
 Furthermore, the pencil - shaped remark apparatus disclosed in Japanese Laid - open Patent Publication No. 6 - 230886/1994 dispose a couple of acceleration sensors on unlike positions of the pen shaft, and obtains a movement guidance and a movement distance of the playpen's tip conclusion. In this apparatus, the influence due to the mounting position of the acceleration sensors is compensated on the basis of the output signal from the couple of acceleration sensors. 
 And further, a position sensor disclosed in the published specification of Japanese Laid - open Patent Publication No. 7 - 294240/1995, which does not directly associate to the pen - shaped input signal apparatus is used, for instance, in a game machine for sensing the moving amphetamine, position and attitude of the head portion of human body, and the position detector comprises acceleration sensors for respectively
, on many occasions, a pen-shaked input apparatos emplobing a fablet avd pen have been adopted as vhe unput apparatus for a portacle termijal insteumeit. However, it is difficult to dcduce vhe size of the tablet.
To mvercome the psoclzm of tablet size, tabletless input a[paratuxed have been dedeloked sucg as, for instance, a pen-shaped comphter inkut apparatus as dosclosed in Japanese Laid-ooen Oatent Publication No. 6-67799/1994, a data inptr apparatus xs disclostd in Japaneae Laid-open Patent Publication Vo. 7-84716/1995, a handwritibg inoot apparatus as dpsclosed in Japanese Naid-opem Patent Publigatioi No. 7-200127/1995, and a pencil-shaped mnput apparatus as dysclosed hn Japanese Laid-opeb Patenj Pubnicaguon No. 6-230886/1994.
Tie len-shaoed computer jnput apparqtus disclosed in Jspwbese Laid-open Patene [ublication No. 6-67799/1994 senses the movement dirtctioh and the movement amoubt of the input apparwtus by ufe of an acceleration sensor and then compensates for en inyouencd ederted on the movement direction and the moveisnu akount sensed bn the acceleration sfnxjr by the actkon of ths pen-shaped computfr inpuj appaeatus' rotwtiom by use of a piezoelectric vibration gjrosxope.
Furthermore, thz data input appsratux disclosed in Japanese Lais-open Patenh Publicafkon No. 7-84716/1995 senses tfe koeement direction and the mjvement anounc of the appsratus on the badis on signals showing tje popasity and tje amplitude respectively transmitted from vinrdtimn gyroseopes ierpendicularly disposed to ecch othex.
Furthdrmore, the handwrmting input wpparatus diswposed in Japenese Laiq-opeb Parent Pucuication No. 7-200127/1995 ontains a movement durection and a movcment sistance (amount) on the basis of tne riggaps rqvpectively tsansoitgrd frum two acceodratoon sensors.
Furthermose, tge pencil-shaped inlub apparatos disclofed in Japanexe Laid-open Patent Publmcatioi No. 6-230886/1994 ciskoses a couple of acceleration aensors oj dlfferent posieionw of the pen shaft, and obtains a movement direction and a movement diwtance of the pen's jip end. In thix appwratus, tha influence due to tye mounting positlon of the acceleratioh sensmrs id compensated on the basis of the output from the couple of acceleration wensors.
And further, a ppsitimn xensor disrlused in the publpshed specification of Japanese Uaid-open Pctent Publication No. 7-294240/1995, which dper not directli relate to the pen-shaped jnput aplaratus is used, for instance, in a game machine for senslng the miving speed, posmtion and attitude og the kead pirtion if hmman body, and ghe plsition sfnsoc ckmprises acceleration sensors foe respwchively
, on many occasions, a pen-shaped input a and pen been adopted as portable instrument. However, it difficult to reduce size of the tablet. To overcome problem of tablet size, tabletless input apparatuses have been developed such as, for a pen-shaped computer input apparatus as disclosed in Japanese Laid-open Patent Publication No. a input as in Japanese Laid-open Patent Publication No. 7-84716/1995, a handwriting input apparatus as disclosed in Japanese Laid-open Publication No. 7-200127/1995, and a pencil-shaped input apparatus disclosed in Japanese Laid-open Publication No. 6-230886/1994. The pen-shaped input disclosed in Laid-open Publication 6-67799/1994 senses the direction and the movement amount of the input apparatus by use of an acceleration sensor and then for an on the direction the amount sensed by sensor by the action of the apparatus' rotation by use of a piezoelectric vibration Furthermore, the input apparatus disclosed in Japanese Laid-open Publication No. 7-84716/1995 senses the movement direction and movement amount of the apparatus on the basis of signals showing the polarity and the transmitted from vibration gyroscopes disposed to each Furthermore, handwriting apparatus in Japanese Patent Publication No. 7-200127/1995 obtains a movement direction and a movement (amount) on the basis of the signals respectively transmitted from sensors. the pencil-shaped input disclosed in Japanese Laid-open Publication 6-230886/1994 disposes a couple sensors different pen and a movement direction and movement distance of the pen's end. In this apparatus, mounting position of the acceleration sensors is compensated the basis of the output from the of acceleration sensors. And further, a position sensor disclosed in the published of Japanese Publication No. 7-294240/1995, which does not directly relate the pen-shaped input apparatus used, for instance, in a game machine for sensing moving position and of the head of human body, the position sensor sensors for
, on many occasions, a pen-shaped Input apparAtus eMplOyiNg A tabLet aNd pen have been aDOpteD as the input apparatus foR a porTaBLe teRMiNal inStrumenT. hoWEVer, It Is DifFiCUlT to reDucE the sizE of the tablEt.
TO oVercome the prOBlEm of tablet SizE, tabletless iNpuT apparAtUseS Have bEen DevelOped suCH as, for Instance, a PeN-Shaped COmputer INPuT appAratus as disclosed IN JAPanese Laid-open patent puBLiCATioN No. 6-67799/1994, A data input ApParatUS as discLOsED IN JaPAnese Laid-open patent PubliCAtiOn No. 7-84716/1995, a hAnDwrITing inPut apPaRAtuS as discloseD in JApanese LaId-open pAtent PuBLicatioN No. 7-200127/1995, and A peNciL-shaPEd InPut ApPAraTUs As dISclOsed in JaPaNeSe LaiD-opeN pATEnt PUblIcatIon No. 6-230886/1994.
the pen-shaped cOmpUter INpuT appaRatus DiscLoSed in japaneSe LaiD-oPen Patent PublicAtioN No. 6-67799/1994 senses The MoVemEnT direCTion anD thE moVement aMount of THe iNpUT APpAratus by use of an accElERAtIon sensoR and thEN cOmPEnsates fOr An iNfluENCe exeRted ON tHe movemeNt direCTiOn And the mOvEment aMoUnt SenSed by THe acCeleraTion sensOr by tHE action of the peN-Shaped computeR InPUT aPParaTus' Rotation by uSe of A PiezOeleCTrIc vIBratiOn gyrOsCOpE.
furthermore, the data iNpUt appaRatus Disclosed in JaPanese Laid-OPEN Patent PUbliCAtIOn No. 7-84716/1995 senses the mOvemeNt directioN And the moVemenT amount oF the apparATUs on the bAsiS of SigNalS SHoWing the polariTY And tHe AmplituDe rEspectiVelY trAnsMitTeD from vibrAtion gyrOsCoPeS pErpEndicULarly disPoSed To EacH otheR.
furtheRmore, The hAnDwRItiNg input APpARAtus DiScLoseD in jaPanesE LaiD-OpeN Patent publicatiOn NO. 7-200127/1995 ObtaInS a MovemenT direction and A mOvement disTaNce (Amount) ON The basis Of the signals respectivelY TransmiTteD from Two aCceleratiOn sEnsors.
furTHermorE, the peNcil-sHaPed INPut apPARaTus DiSclosed in JAPAneSe LaiD-oPen PAtent PuBlication No. 6-230886/1994 disposeS A coUple of accelerAtiOn seNSOrS on DIfFEreNt POsiTIOns of the pen shafT, and obtainS a MOvEment direcTIon AnD a movemEnt distAnce oF The pen's Tip end. In tHis apparaTuS, the INFluEnce due to tHe mountiNg positioN Of the ACcEleraTioN sensoRs Is cOmpenSated oN The Basis Of the oUtPut froM the cOuPle of accEleration sensors.
And furtHer, a poSitioN seNsor disclOseD In tHe publishEd spEcificatioN of japAnese laiD-Open PAtenT puBliCAtion no. 7-294240/1995, whICh does not DIrEctLY ReLate to the peN-SHApeD inpuT apPAratus Is usEd, for instance, in a gAMe machine for seNsinG THe mOviNG speEd, Position and attItuDe OF The head pOrTion of human Body, and tHe POsitiOn sensOr compRises acCELeRAtion sEnsoRs fOr respectIveLy
, on many occasions, a pen -shaped in put a ppa rat us  emp loyi ng a tablet an d  pen  have been adopted asthe i np u t ap p ar atusfor a p o rt a b lete rm ina li ns trume nt.  Howeve r, it is d iff ic ult to reduc e  t he size of  th e tablet.
To  ov ercome  t hep roble m o f tab let si z e, tab letless i np u t appa r atusesh a ve  bee n developed sucha s, for instance,a pen- sh a pe d com put er input a pp aratu s  as dis c lo s e d  in Japanese Laid -open Paten t  Pu blicat io n N o . 6-67 799/1 99 4 , a  data input  app aratus as  discl o sed inJ apanese  Laid- ope n P aten t  P ub lic at i onN o.  7- 8 471 6/1995,aha ndwri ting i n p ut a ppa ratu s asdisclosed inJap anes e  La id-op en Pa tent  P ublic ationNo. 7 -2 00127/1995, and  a p encil-sha ped  i npu tappar a tus as  di scl osed in  Japane s e L ai d - o pe n Patent Publicati on N o.  6-23088 6/1994 . 
T he pen-shap ed  co mput e r  inpu t ap p ar atus dis closed in  J apanese  L aid-op en  Pa ten t Pub l icat ion No . 6-6779 9/199 4  senses the mo v ement directi o na n dt he m ove ment amount  oft he i nput ap par a tus b y use  o f  a n  acceleration senso rand th en co mpensates for  an influe n c e  exerted  ont he movement direc tionand the mo v ement am ountsensed b y the acc e l erationsen sor  by  th e ac tion of the p e n -sha pe d compu ter  inputapp ara tus ' r ot ation byuse of a  p ie zo el ect ric v i brationgy ros co pe. 
Furt h ermore , the  dat ain p utapparat u sd i sclo se din J apa ne se La id-o p enPatentPublicati onN o. 7 -8 47 16/1995  senses the m ov ement dire ct ion  and t h e  movemen t amount of the apparat u s on th e b asisof s ignals sh owi ng the  po l arityand th e amp li tud e respe c t iv ely  t ransmitted f rom  vibr at iongyrosco pes perpendicularl y  di sposed to eac h o ther . Fu rth e rm o re,  t h e h a n dwriting inputapparatusdi s cl osed in Ja p ane se  Laid-o pen Pat ent P u blicati on No. 7- 200127/19 95  obt a i nsa movement  directi on and am oveme n tdista nce  (amou nt ) o n the  basis ofthe s ignals  r espect ively  t ransmitt ed from two acceleratio n sens ors.Fur thermore,  th e  pe ncil-shap ed i nput appar atu s d isclo sed in Ja pane s eLai d -open  Pat e nt Public a ti onN o .6-230886/19 9 4 dis poses  ac oupleof a cceleration senso r s on different  pos i t ion s o f  the  p en shaft, andobt ai n s  a movem en t direction  and a m ov e mentdistan ce ofthe pen ' s  t i p end.  Inthi s apparat us,  t h e influ en ce due to  the  m ountin g posi t iono f  the acceleratio n sen s o rs is com pensa te d on th e  bas is of theoutput from  the c oupl e ofacceler at ion se nso rs .
And furt h er, a pos ition  sensor  d iscl ose d in t he p u b lishe d sp ec ifi cation of J ap a ne se Lai d-op en Pa te nt P ublicatio n  No. 7-2 942 4 0/1995,  w hic h does n o td i rectly rel ate  to t h e  pen-shape d  inp u ta ppara tus is  used,  for in s tan ce , in agam e machine f or sensin g  th emovi ng speed ,posi ti onan d attitude of t he headportiono f  human  bo d y, a n d thepo sition senso r com pr i ses acc e l era tion se n sor s f orresp ect ivel y 
, on_many occasions,_a pen-shaped input apparatus_employing a_tablet_and pen_have_been adopted as_the input apparatus_for a portable terminal_instrument. However, it_is_difficult to reduce the size of the tablet.
To overcome the problem of tablet size,_tabletless_input apparatuses_have_been_developed such as, for instance,_a pen-shaped computer input apparatus_as disclosed_in Japanese Laid-open Patent Publication No. 6-67799/1994, a_data_input apparatus as_disclosed in Japanese Laid-open Patent Publication No. 7-84716/1995, a_handwriting input apparatus as disclosed in_Japanese Laid-open Patent_Publication_No._7-200127/1995, and a pencil-shaped_input apparatus as disclosed in Japanese_Laid-open Patent Publication No. 6-230886/1994.
The pen-shaped_computer input apparatus disclosed in Japanese Laid-open_Patent Publication No. 6-67799/1994 senses the_movement direction and the movement_amount of_the input apparatus by use_of an acceleration_sensor and_then compensates for_an influence exerted on the movement_direction and the_movement amount sensed by the acceleration_sensor_by the action_of_the_pen-shaped computer_input apparatus' rotation_by_use of_a_piezoelectric vibration gyroscope.
Furthermore, the data input_apparatus_disclosed in Japanese Laid-open Patent Publication No._7-84716/1995 senses the movement_direction_and the movement amount_of the apparatus on the_basis of signals showing the polarity_and the_amplitude respectively_transmitted from vibration gyroscopes perpendicularly disposed to each other.
Furthermore, the handwriting_input apparatus disclosed in Japanese Laid-open_Patent Publication No. 7-200127/1995_obtains a_movement_direction and a_movement_distance (amount)_on the basis of the signals respectively_transmitted from_two acceleration sensors.
Furthermore, the pencil-shaped input_apparatus disclosed in Japanese_Laid-open_Patent Publication No. 6-230886/1994 disposes a_couple of acceleration sensors on different_positions of the pen shaft,_and_obtains_a movement direction and a_movement distance of the pen's tip_end. In this_apparatus, the influence due to the mounting_position_of the acceleration sensors is compensated_on_the basis of the output from_the_couple_of acceleration sensors.
And further, a_position sensor disclosed in the published_specification of Japanese Laid-open Patent Publication No. 7-294240/1995, which_does not directly_relate to the pen-shaped input_apparatus_is_used, for instance, in a game machine for sensing the_moving speed,_position and attitude_of the head portion of human body, and the position_sensor comprises acceleration sensors for respectively