JP4565621B2 - Information processing system - Google Patents

Description

  The present invention relates to an information processing system having a coordinate input device formed integrally with a display device, for example.

  The coordinate input device is configured to overlap with an image display surface such as a computer display device such as a CRT, a liquid crystal display, or a plasma display, thereby performing operations such as direct drawing and pointing on the display screen. This allows input to a computer. Various types of such coordinate input devices are known that are classified based on a detection principle based on a physical phenomenon for detecting the position of an input indicator. The main methods include resistance tablet method, magnetic coupling tablet method, capacitive coupling tablet method, optical coupling tablet method, and sound / vibration tablet method. For example, Japanese Unexamined Patent Publication No. 5-53715 (Patent Document 1) for the resistance tablet system, Japanese Unexamined Patent Publication No. 5-289806 (Patent Document 2) for the magnetic coupling tablet system, and Japanese Patent Laid-Open No. No. 80921 (Patent Document 3), optical coupling tablet system, for example, JP-A-5-53717 (Patent Document 4), and acoustic / vibration tablet system, for example, JP-A-5-66877 (Patent Document 5). It is disclosed.

  There are various sizes of tablets ranging from a portable size for individuals that can be carried in a bag for small ones, to a so-called electronic blackboard size for large ones. In an information processing apparatus having a tablet, when an operator brings a pen-type input indicator close to or in contact with an input board, the position coordinates of the pen, that is, an input point is detected, and a predetermined value is determined based on the detection result. Functions such as execution of menu commands are performed.

  On the other hand, there is a general use form of a computer that controls a cursor displayed on a display device using a mouse as an input indicator. In recent years, optical mice have become mainstream, and since the conventional tracking ball is not in the mouse, the entire mouse is slightly lighter and requires no ball cleaning. There are many advantages. Furthermore, by incorporating a memory card interface in the mouse, there are some that can be used as an external storage device that can easily read and write data in the memory card in addition to the normal mouse function. After the memory card is installed, data can be read and written as a removable disk.

  In these devices, for example, in Japanese Patent Application Laid-Open No. 7-28585 (Patent Document 6), a pen as an input indicator can be used as an external storage device for storing personal information, and portability and operability of a pen input computer can be used. Proposals have been made for the purpose of improving the above. This document describes a character recognition function that uses a personal dictionary to increase the recognition rate with a pen input computer, and the stylus pen is equipped with a non-volatile flash memory. The various data can be stored.

  Japanese Patent Application Laid-Open No. 4-205821 (Patent Document 7) relates to a multimedia information input device that inputs multimedia information to a computer. In particular, image information captured by an electronic still camera and audio input by a microphone are used. The present invention relates to an apparatus for electronically inputting to a computer. For the purpose of improving operability, an input display integrated tablet in which a display apparatus and a coordinate input apparatus for performing handwriting input are integrated, at least an imaging apparatus, and the captured image Proposals have been made of an image signal processing circuit that converts a signal into a digital signal, a microphone that inputs sound, and a stylus pen for handwriting input that includes a sound signal processing circuit that converts input sound into a digital signal.

  Furthermore, Japanese Patent Laid-Open No. 6-282375 (Patent Document 8) discloses that one pen computer can be used to transfer data from an information processing apparatus that is only operated by a pen to another information processing apparatus. Data to be transferred in the screen displayed on the display device is designated by pen operation of a predetermined stroke and stored in the memory in the pen, and then the data of the predetermined stroke is displayed on the display screen of the display device of another pen computer. There has been a proposal for transmitting data wirelessly by designating an overwrite position or insertion position of the designated data in the display screen by a pen operation.

Japanese Patent Laid-Open No. 5-53715 Japanese Patent Laid-Open No. 5-289806 JP-A-5-80921 Japanese Patent Laid-Open No. 5-53717 Japanese Patent Laid-Open No. 5-66877 Japanese Patent Laid-Open No. 7-28585 Japanese Patent Laid-Open No. 4-205721 JP-A-6-282375

  The conventional information processing apparatus has the following problems regarding the operability of the portable storage medium.

  That is, a device that uses a flash memory, for example, that is connected to a peripheral port (for example, USB) of a computer and functions as a removable medium has excellent portability and data even if the host device cannot be connected to a network. Although there is an advantage that data can be easily transferred as a storable medium, it is not always excellent in operability because a predetermined procedure must be taken when using a file with stored contents. .

  For example, a conventional apparatus is connected to a port, performs authentication, and is recognized as a drive. At the same time, a driver and profile information are loaded into the main body, and a file in a memory can be accessed. Thereafter, the user needs to operate the window several times before operating the window system to display the contents of the memory and starting a desired operation.

  In addition, when this type of information processing device is configured as a large-screen display device and used as a conference system, the user connects each memory to each port, especially when considering the form used by multiple people However, the number of ports of the computer is limited, and in reality, it may be said that there are almost no situations in which a plurality of users' memories are connected and used at the same time.

  Therefore, if you want to use more than one person, log in again or recognize it as a drive, and then to view the list of files in the window system, reconnect to each port or change the window. It is difficult to say that the operation is complicated and easy to use, such as operating the system.

  Furthermore, in the information processing apparatus provided with the conventional coordinate input apparatus as described above, there are the following problems related to the safety of data handled by the information processing apparatus.

  That is, there is a problem relating to authority such as access when performing data transfer from the storage medium to the information processing apparatus or data transfer from the information processing apparatus to the storage medium, and authority such as access to post-transfer data.

  In particular, when the above-mentioned device is applied to a conference system, the user is not limited, such as when the device is permanently installed in a conference room, and the information processing to be used is present when there are a large number of unspecified users. When the device is a shared device, the safety of various data such as unauthorized access, falsification of data, user access restrictions such as browsing permission and access permission, and file security such as copy prohibition should be considered.

  On the other hand, by installing a flash memory in the pointing device of the coordinate input device, it becomes a portable external storage device. Therefore, there is a possibility that data in the memory may be used by others due to misplacement or the like. In addition, even when transferring data to the main unit information processing device and using it, if there is important material such as confidential information or privacy information that you do not want to be seen by people, such as when you want to make it accessible only to specific people I want to prohibit duplication or access itself.

  With respect to the above problems, Patent Document 6, Patent Document 7, and Patent Document 8 mentioned above do not refer to the browsing property and operability of the file stored in the storage means at all. Then, the problem of forcing a very inconvenient operation for the user is not solved. Further, these documents do not suggest any safety of information handled by the information processing apparatus, and the above problems cannot be avoided at all.

  The present invention has been made under such circumstances, and is an information processing system that improves the operability and the safety of the data when handling various data between the instruction means of the coordinate input device and the host device. The purpose is to provide.

One aspect of the present invention is a display device that displays an image, an indicator that includes a rewritable memory medium, and an operation performed by the indicator in an input area provided on an image display surface by the display device. The present invention relates to an information processing system including an input device that inputs information related to the above and a host device that performs control processing according to the information input by the input device. Here, the input device, wherein the memory medium is issued by a predetermined operation of the pointing device - when it detects a request for file transfer between the host device performs the authentication for access to said memory medium A determination unit that determines whether or not to perform an authentication mode operation based on a signal from the host device, and when the determination unit determines that the authentication mode operation is to be performed, is input by the indicator. has been a conversion unit information is converted into authentication data, and transmitting means for transmitting the authentication data obtained by the conversion means to the pointing device. On the other hand, the pointing device includes an authentication unit that performs an authentication process based on the authentication data received from the input device.

  ADVANTAGE OF THE INVENTION According to this invention, the information processing system which improved the operativity at the time of handling various data between the instruction | indication means of a coordinate input device and a host apparatus, and the safety | security of this data can be provided.

  DESCRIPTION OF EMBODIMENTS Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the drawings.

(Schematic configuration of coordinate input device)
First, a schematic configuration of the information processing system in the present embodiment will be described with reference to FIGS. 1A and 1B. FIG. 1A is an external perspective view of an image display / input unit of the information processing system in the embodiment, and FIG. 1B is a block diagram showing a hardware configuration of the information processing system.

  This information processing system is connected to and controls a projector 7 as a display device for displaying an image, a coordinate input device 8 provided on an image display surface 7a of the projector 7, a projector 7 and a coordinate input device 8, respectively. The configuration includes a host computer 6 as a control device (host device). The host computer 6 is realized by a personal computer (PC), for example. Therefore, each of the projector 7 and the coordinate input device 8 can be connected to the host computer 6 via an interface such as a USB.

  The configuration of the coordinate input device 8 will be described. 1L and 1R in FIG. 1B are sensor units each having a projector and a detector, and 1L and 1R are installed at positions separated from each other by a predetermined distance. The sensor units 1 </ b> L and 1 </ b> R are connected to a control / arithmetic unit 2 that performs control / calculation, receive a control signal from the control / arithmetic unit 2, and transmit a detected signal to the control / arithmetic unit 2. Reference numeral 3 denotes a reflecting member having a retroreflecting surface that reflects incident light in the arrival direction as shown in FIG. 2, and covers the input area 5 from the left and right sensor units along the surface of the input area 5 (for example, approximately The light projected in the 90 ° range is retroreflected toward the sensor unit. The reflected light is detected one-dimensionally by a detector of a sensor unit constituted by a condensing optical system and a line CCD, and the light quantity distribution is sent to the control / arithmetic unit 2.

  The input area 5 can be used as an interactive input device by being configured on a display screen of a display device such as a PDP, a rear projector, or an LCD panel. In this system, it is possible to input the locus 4a by pressing and moving the predetermined indicator 4 to the input area 5, and by inputting instructions for various information such as displayed icons, Various applications can be controlled.

  In such a configuration, when an input instruction is given to the input area with the pointing tool 4 or a finger, the light projected from the projector is blocked, and reflected light due to retroreflection cannot be obtained. The amount of light cannot be obtained.

  The control / arithmetic unit 2 detects the light-shielding range of the input-instructed portion from the light amount change of the left and right sensor units 1L and 1R, specifies the detection point within the same range, and calculates the respective angles. The coordinate position on the input area 5 is calculated from the calculated angle and the distance between the sensor units, and the coordinate value is output to the host computer 6.

  In this way, the host computer 6 can be operated with a finger or the like to draw a line on the screen or operate an icon.

  Hereinafter, each part of the coordinate input device 8 will be described in detail.

(Detailed explanation of sensor unit)
3A and 3B are diagrams showing a configuration example of a projector in the sensor units 1L and 1R. FIG. 3A is a diagram of the projector viewed from above (perpendicular to the input surface), and FIG. It is the figure seen from the (horizontal direction). Reference numeral 31 denotes an infrared LED that emits infrared light, and the emitted light is emitted by the light projecting lens 32 in a range of approximately 90 °. In this direction, the light from the infrared LED 31 is projected as a light beam restricted in the vertical direction, and the light is mainly projected onto the reflector 3.

  FIG. 4 is a diagram of the detectors in the sensor units 1L and 1R viewed from the direction perpendicular to the input surface. The detector includes a one-dimensional line CCD 41, lenses 42 and 43 as a condensing optical system, a diaphragm 44 that limits the incident direction of incident light, and an infrared filter 45 that prevents the incidence of extra light such as visible light. It is a configuration.

  The light from the projector is reflected by the retroreflective member, passes through the infrared filter 45 and the stop 44, and the light in the approximately 90 ° range of the input surface is incident on the detection surface of the CCD 41 at the incident angle by the condensing lenses 42 and 43. It forms an image on the dependent pixel and shows a light amount distribution for each angle. That is, the pixel number represents angle information.

  FIG. 5 shows the configuration of the sensor units 1L and 1R when the input surface is viewed from the horizontal direction. As shown in the figure, the projector and the detector are configured to overlap each other. The distance between the optical axes of the projector and the detector only needs to be set in a sufficiently detectable range from the angle characteristics of the retroreflective member.

(Reflecting member)
The retroreflective member 3 shown in FIG. 1 has a reflection characteristic with respect to an incident angle. As can be seen from the characteristic diagram of the amount of reflected light with respect to the incident angle shown in FIG. 6, when the retroreflecting member 3 is flat, the amount of reflected light obtained when the angle from the reflecting member exceeds 45 degrees decreases. However, when there is a shield, the change cannot be sufficiently taken.

  The amount of reflected light is determined by the light amount distribution (illumination intensity and distance), the reflectance of the reflecting member (incident angle, the width of the reflecting member), and the imaging system illuminance (cosine fourth law). When the amount of light is insufficient, it is conceivable to increase the illumination intensity. However, if the reflection distribution is not uniform, when a strong portion of light is received, the portion may be saturated by the CCD as the light receiving means. There is a limit to increasing the illumination intensity. In other words, it is also possible to increase the amount of light incident on the low light amount portion by making the reflection distribution of the reflecting member as uniform as possible.

  In order to make the angle direction uniform, the member to which the retroreflective member 3 is attached is formed by arranging triangular prisms as shown in FIG. 7, and the retroreflective member 3 is installed thereon. Thereby, the angle characteristic can be improved. Note that the angle of the triangular prism may be determined from the reflection characteristics of the retroreflective member, and the pitch is preferably set to be equal to or lower than the detection resolution of the CCD.

(Explanation of control / arithmetic unit)
A CCD control signal, a CCD clock signal and a CCD output signal, and an LED drive signal are exchanged between the control / arithmetic unit 2 and the sensor units 1L and 1R shown in FIG.

  FIG. 8 is a block diagram showing the configuration of the control / arithmetic unit 2. The CCD control signal is output from an arithmetic control circuit (CPU) 83 composed of a one-chip microcomputer or the like, and performs CCD shutter timing, data output control, and the like. A clock for the CCD is sent from the clock generation circuit 87 to the sensor units 1L and 1R, and is also input to the arithmetic control circuit 83 in order to perform various controls in synchronization with the CCD.

  The LED drive signal is supplied from the arithmetic control circuit 83 to the infrared LEDs of the sensor units 1L and 1R via the LED drive circuits 84L and 84R.

  Detection signals from the CCDs in the detectors of the sensor units 1L and 1R are input to the A / D converters 81L and 81R, and converted into digital values under the control of the arithmetic control circuit 83. The converted digital value is stored in a memory (for example, RAM) 82 and used for angle calculation. When the coordinate value is obtained from the calculated angle, the coordinate value data is output to the host computer 6.

(Explanation of light intensity distribution detection)
FIG. 9 is a timing chart of each control signal related to LED light emission.

  Signals SH, ICGL, and ICGR are control signals for CCD control, and the shutter release time of the CCD is determined by the interval of SH. Signals ICGL and ICGR are gate signals to the left and right sensor units 1L and 1R, respectively, and are signals for transferring the charge of the photoelectric conversion unit in the CCD to the reading unit. Each of the signals LEDL and LEDR is a drive signal for the left and right LEDs, and the drive signal LEDL is supplied to the LEDs through the LED drive circuit in order to light one LED in the first cycle of SH. The other LED is driven in the next cycle. After the driving of both LEDs is completed, the CCD signal is read from the left and right sensors.

  When the signal to be read is not input, a light amount distribution as shown in FIG. 10 is obtained as an output from each sensor. Of course, such a distribution is not necessarily obtained in any system, and the distribution changes depending on the characteristics of the retroreflective member 3, the characteristics of the LED, and changes with time (such as dirt on the reflecting surface). In the figure, the A level is the maximum light amount, and the B level is the lowest level. That is, in a state where there is no reflected light, the level obtained is near B, and the direction of the A level is increased as the amount of reflected light increases. Thus, the data output from the CCD is sequentially AD converted and taken into the CPU as digital data.

  FIG. 11 shows an example of output when input is performed with a finger or the like, that is, when reflected light is blocked. Since the reflected light is blocked by a finger or the like in the portion C, the amount of light is reduced only in that portion. Detection is performed from the change in the light amount distribution. Specifically, an initial state without input as shown in FIG. 10 is stored in advance, and whether there is a change as shown in FIG. 11 in each sample period is detected by a difference from the initial state. An operation for determining an input angle is performed using that portion as an input point.

(Description of angle calculation)
In calculating the angle, it is first necessary to detect the light shielding range. As described above, since the light quantity distribution is not constant due to changes over time, it is desirable to store it at the time of starting up the system. By doing so, for example, even if the retroreflective surface is dirty with dust or the like, it can be used unless it is not completely reflected. Hereinafter, the data of one sensor will be described, but the same processing is performed on the other sensor.

  When the power is turned on, the CCD output is first AD-converted without illumination from the projector in the absence of input, and this is stored in the memory as Bas_data [N]. This is data including variations in the bias of the CCD and the like, and is data near the level B in FIG. Here, N is a pixel number, and a pixel number corresponding to an effective input range is used.

  Next, the light quantity distribution in the state illuminated from the projector is stored. This data is represented by the solid line in FIG. 10 and is Ref_data [N]. Using these data, it is first determined whether an input has been made or whether there is a light shielding range. Data of a certain sample period is assumed to be Norm_data [N].

  First, in order to specify the light shielding range, presence / absence is determined based on the absolute amount of data change. This is to prevent erroneous determination due to noise or the like and to detect a certain amount of reliable change. The absolute amount of change is calculated for each pixel as follows and compared with a predetermined threshold value Vtha.

  Norm_data_a [N] = Norm_data [N] −Ref_data [N] (1)

  Here, Norm_data_a [N] is an absolute change amount in each pixel.

  Since this process only takes a difference and compares it, it does not use much processing time, and therefore it is possible to determine whether or not there is an input at high speed. It is determined that there is an input when the number of pixels exceeding Vtha for the first time is detected exceeding a predetermined number.

  Next, in order to detect with higher accuracy, a change ratio is calculated to determine an input point.

  In FIG. 12, reference numeral 121 denotes a retroreflective surface of the reflecting member 3. Here, assuming that the reflectance of the area A has decreased due to dirt or the like, the distribution of Ref_data [N] at this time has a smaller amount of reflected light in the area A as shown in FIG. In this state, if an indicator such as a finger is inserted as shown in FIG. 12 and almost half of the retroreflective member is covered, the amount of reflected light is substantially halved. Therefore, the distribution indicated by the thick line in FIG. Norm_data [N] is observed.

  When Expression (1) is applied to this state, the result is as shown in FIG. Here, the vertical axis represents the differential voltage from the initial state. If a threshold is applied to this data, the original input range may be lost. Of course, it can be detected to some extent if the threshold value is lowered, but it may be affected by noise or the like.

  Therefore, if the ratio of change is calculated, the amount of reflected light is half of the first half in both areas A and B, and therefore the ratio is calculated by the following equation.

  Norm_data_r [N] = Norm_data_a [N] / (Bas_data [N] −Ref_data [N]) (2)

  This calculation result is as shown in FIG. 14B and is represented by a fluctuation ratio. Therefore, even when the reflectance is different, it can be handled equally and detection can be performed with high accuracy.

  The threshold value Vthr is applied to this data, and the angle is obtained from the pixel numbers of the rising and falling portions with the center of both as the input pixel. FIG. 14B is schematically drawn for explanation, and does not actually rise like this, and shows a different level for each pixel.

FIG. 15 shows an example of detection after the ratio calculation is completed. Rising portion of the light shielding region now be detected in the threshold Vthr is to exceed the threshold value in N _r th pixel. Further, the below the Vthr at pixels numbered N _f. The central pixel N _p is
N _p = N _r + (N _f −N _r ) / 2 (3)
However, in this case, the pixel interval becomes the minimum resolution. In order to detect more finely, a virtual pixel number across the threshold is calculated using the level of each pixel and the level of the previous pixel.

Now, _{assume that} the level of Nr is _Lr , and the level of the _Nr- 1th pixel is _Lr-1 . _If the level of N _f is L _f and the level of N _f-1 is L _f-1 , the virtual pixel numbers N _rv and N _fv can be calculated by the following equations.

N _rv = N _r-1 + (Vthr-L _r-1 ) / (L _r -L _r-1 ) (4)
N _fv = N _f-1 + (Vthr-L _f-1 ) / (L _f -L _f-1 ) (5)

The virtual center pixel N _pv is expressed by the following equation.

N _pv = N _rv + (N _fv -N _rv ) / 2 (6)

  Thus, by calculating a virtual pixel number from the pixel number and its level, detection with higher resolution can be performed.

  In order to calculate an actual coordinate value from the obtained center pixel number, it is necessary to convert it into angle information. In actual coordinate calculation described later, it is more convenient to obtain the value of the tangent at the angle rather than the angle itself. A table reference or a conversion formula is used for conversion from the pixel number to tan θ.

  FIG. 16 is a plot of tan θ values against pixel numbers. An approximate expression is obtained for this data, and pixel number and tan θ conversion is performed using the approximate expression. For example, when a high-order polynomial is used as the conversion formula, the accuracy can be ensured, but the order and the like may be determined in consideration of the calculation capability and accuracy specifications.

  When a fifth order polynomial is used, six coefficients are required, so this data may be stored in a nonvolatile memory or the like at the time of shipment.

  If the coefficients of the fifth-order polynomial are now L5, L4, L3, L2, L1, and L0, tanθ is expressed by the following equation.

  tanθ = (L5 * Npr + L4) * Npr + L3) * Npr + L2) * Npr + L1) * Npr + L0 (7)

  If the same thing is done for each sensor, the respective angle data can be determined. Of course, in the above example, tan θ is obtained, but the angle itself may be obtained, and then tan θ may be obtained.

(Explanation of coordinate calculation method)
Coordinates are calculated from the obtained angle data.

  FIG. 17 is a diagram illustrating a positional relationship with the screen coordinates. Each sensor unit is mounted on the left and right sides of the input range, and the distance between them is represented by Ds.

  The center of the screen is the origin position of the screen, and P0 is the intersection of the angle 0 of each sensor unit. The respective angles are θL and θR, and tanθL and tanθR are calculated using the above polynomials. At this time, the x and y coordinates of the point P are expressed by the following equations.

x = Ds / 2 * (tanθL + tanθR) / (1+ (tanθL * tanθR)) (8)
y = −Ds / 2 * (tan θR−tan θL− (2 * tan θL * tan θR)) / (1+ (tan θL * tan θR)) + P0Y (9)

  FIG. 18 is a flowchart showing steps from data acquisition to coordinate calculation.

  First, when the power is turned on in step S101, various initializations such as port setting and timer setting of the arithmetic control circuit 83 and the like are performed in step S102. Step S103 is a preparation for removing unnecessary charges performed only at startup. In a photoelectric conversion element such as a CCD, unnecessary charge may be accumulated when it is not operated. If the data is used as it is as reference data, it becomes impossible to detect or causes false detection. In order to avoid this, data is first read multiple times without illumination. In step S103, the number of times of reading is set. In step S104, unnecessary data is removed by reading data a predetermined number of times without illumination.

  Step S105 is a determination sentence for repeating a predetermined number of times.

  Step S106 is fetching data without illumination as reference data, and corresponds to Bas_data. The data fetched here is stored in the memory (step S107) and used for the calculation thereafter. This and another reference data, that is, data Ref_data corresponding to the initial light amount distribution when illuminated is captured (step S108), and is also stored in the memory (step S109). Up to this step is the initial setting operation when the power is turned on, and then the normal capturing operation is performed.

  In step S110, the light amount distribution is captured as described above, and in step S111, the presence / absence of a light-shielding portion is determined based on the difference value from Ref_data. If it is determined that there is not, the process returns to step S110 and the capture is performed again.

  At this time, if the repetition period is set to about 10 [msec], the sampling rate is 100 times / second.

  If it is determined in step S112 that there is a light-shielding region, the ratio is calculated in step S113 by the processing of equation (2). A rising portion and a falling portion are determined by a threshold with respect to the obtained ratio, and the center is calculated by the equations (4), (5), and (6) (step S114). From the obtained central value, tan θ is calculated from an approximate polynomial (step S115), and x and y coordinates are calculated from the tan θ values of the left and right sensor units using equations (8) and (9) (step S116).

  Next, in step S117, it is determined whether or not it has been touched. For example, a proximity input state in which the cursor is moved without pressing a mouse button and a touch-down state in which the left button is pressed are determined. Actually, if the maximum value of the ratio obtained previously exceeds a certain predetermined value, for example, 0.5, it is determined that the input is in the proximity input state. According to this result, the down flag is set (step S118) or reset (step S119).

  Since the coordinate value and the down state are determined, the data is transmitted to the host computer 6 (step S120). In the host computer 6, the driver interprets the received data, and moves the cursor, changes the mouse button state, etc. with reference to the coordinate values, flags, and the like.

  When the process of step S120 is completed, the process returns to the operation of step S110, and thereafter this process is repeated until the power is turned off.

(Explanation of coordinate input pen)
In the coordinate input device according to the present embodiment, input with a finger is possible. However, by performing input with a pointing tool such as a pen, operations corresponding to various buttons of the mouse can be intuitively operated. . A coordinate input pen (hereinafter also referred to as “indicator”) 4 according to the present embodiment will be described with reference to FIG.

  The pointing tool 4 in this embodiment includes a pen tip switch (SW) 41 that operates by pressing a pen tip that is a writing tool, and a plurality of pen side switches (SW) provided on the casing of the pointing tool 4. 42). When any one of these switches is operated, a signal is transmitted from the pointing device 4 at a predetermined cycle. Specifically, the drive circuit 45 emits an optical signal that is a timing signal and a command signal every predetermined period.

  The optical signal is received by the control signal detection circuit 86 (see FIG. 8). The control signal detection circuit 86 determines which switch of the indicator 4 is operating based on the received optical signal. At the same time, the exchange of the CCD control signal, the CCD clock signal, and the LED drive signal is started between the sensor units 1L and 1R. Specifically, a signal indicating switch information is superimposed on an optical signal emitted by the pointing device 4 as a timing signal (in addition, an identification code for identifying a coordinate input pen or the like can be superimposed). However, a method for transmitting the information includes, for example, first outputting a header part consisting of a reader part consisting of a continuous pulse train and a code (such as a manufacturer ID) followed by a control signal such as a pen switch signal. The transmission data string is sequentially output according to a predefined order and format. This method is a well-known method (for example, a remote control using infrared rays) and will not be described in detail here.

  As another method, for example, it is also possible to change the predetermined period of this type of coordinate input device that performs coordinate detection every predetermined period and to detect the information by detecting the information. If the coordinate input device is designed to detect coordinates at a maximum of 100 points / second, that is, every 10 msec, when the pen tip SW 41 is operating, for example, coordinates are calculated at 100 points / second, and the pen side SW 42 is When operating, setting is made so that coordinates are calculated at 80 points / second, that is, the signal is emitted from the indicator 4 at each cycle, and the cycle is monitored by the control signal detection circuit 86. Thus, it is possible to determine which switch is operating.

  A more specific configuration of the indicator 4 will be described later.

  When the tip of the pointing tool 4 is pressed against the input area 5, the pen tip switch 41 is turned on, and a coordinate input is just performed by the operator, so that a handwriting input state (“pen down” state) is entered. Also, for example, when the pen tip switch is operated twice within a predetermined time, the time at which the signal is received, the interval, the timing at which the coordinates are calculated, etc. are monitored while referring to the coordinate sampling rate of the coordinate input device. Thus, it is configured to recognize the double click operation of the mouse.

(Detailed configuration and operation of information processing system)
The indicator 4 in the present embodiment further incorporates a flash memory capable of storing various data. Hereinafter, the detailed hardware configuration of the information processing system in the present embodiment including the configuration of the pointing tool 4 will be described with reference to the block diagram of FIG.

  The drive circuit 45 of the pointing tool 4 controls the battery 301, the CPU 307 that controls the entire operation of the pointing tool 4, various programs executed by the CPU 307 (including a control program to be described later, a sign authentication engine program), and data (to be described later). A ROM 306 for storing a signature authentication database), a RAM 308 functioning as a main storage device, a flash memory 303 capable of storing various data, a communication circuit 310 for communicating with the control arithmetic unit 2, and a host computer 6 A wireless communication I / F 309 for communication is included.

  The control calculation unit 2 of the coordinate input device 8 includes a CPU 318 for controlling the coordinate input device 8 as a whole, a ROM 316 for storing a program, a RAM 317 having a work area, a sensor drive circuit 313 for driving the sensor units 1L and 1R, a sensor unit 1L, A sensor signal processing circuit 314 that processes a detection signal output from 1R and outputs it to the CPU 318, a pen I / F circuit 315 for communicating with the pointing device 4, and an I / F circuit for communicating with the host computer 6 319.

  The host computer 6 includes a display drive circuit 321 for driving the projector 7, general-purpose I / F circuits 322 and 323 for connecting various peripheral devices, a CPU 324 for controlling the entire host computer 6, a ROM 325 for storing programs, a work area RAM 326 used as a wireless I / F 327 for connecting to various devices, and an I / F circuit 328 for connecting to the control arithmetic unit 2 of the coordinate input device 8.

  In the following, the operation of the information processing system will be described on the assumption that the user has logged into the host computer 6 in advance in the above apparatus.

  As described above, the pointing tool 4 in the present embodiment incorporates the flash memory 303 for storing various data. Control of access to the flash memory 303 is performed by an operator using the pointing tool 4 by a signature authentication method.

  The signature authentication method is a technology that collates the quirks of different writing movements such as the shape of the signature, input speed, stroke, and writing pressure in time series, and the above-mentioned signature authentication engine registers them in advance. The operator is identified by collating with a certain signature authentication database. The signature authentication in the present embodiment operates with the signature authentication engine program and the signature authentication database stored in the ROM 306, and the operation at this time is referred to as "authentication mode".

  When the sign authentication operation is performed in the authentication mode, the operator authentication is completed, and the access to the flash memory 303 of the pointing device 4 is permitted, the transfer from the flash memory 303 to the host computer 6 or The operator can select whether the data is transferred from the host computer 6 to the flash memory 303. This operation is called “transfer mode”, and when viewed from the indicator 4 side, it is called “transmission mode” when transferring to the host computer 6 and “reception mode” when transferring from the host computer 6. The switching can be performed by pressing the side switch 42a or 42b of the pointing device 4. For example, the “transmission mode” can be set by pressing the pen side switch 42a shown in FIG. 19 and the “reception mode” can be set by pressing the pen side switch 42b. Thus, for example, a file transfer request between the flash memory 303 and the host computer 6 can be issued by a predetermined operation such as a pen-down operation while pressing the pen side switch.

  Next, the operation of each unit will be described with reference to the flowcharts of FIGS.

  FIG. 21 is a flowchart showing the operation of the pointing tool 4 in the embodiment. A program corresponding to this flowchart is included in the control program and signature authentication engine program stored in the ROM 306 and executed by the CPU 307.

  First, in step S202, the state of each switch of the pointing tool 4 is determined to determine whether or not the transfer mode is set. As described above, the transfer mode is determined when the operator performs a predetermined operation such as a pen-down operation while pressing the pen side switch of the pointing tool 4, and at this time, the file transfer between the flash memory 303 and the host computer 6 is performed. Request has been issued. In the case of the transfer mode, the process proceeds to step S203 to determine whether the mode is the authentication mode. The authentication mode is determined based on, for example, a signal transmitted from the host computer 6. If the authentication mode is the authentication mode, an authentication mode flag is set in step S204.

  In step S205, the authentication engine in the ROM 306 is activated. In step S206, the process waits for reception of authentication data to be authenticated by the signature authentication engine.

  Authentication data is received from the control arithmetic unit 2, authentication operation is started, and if it is recognized as a registered user by collating with the database for signature authentication, authentication is OK in step S207, and the data index in the flash memory is set in step S208. Generate. In the case of authentication NG in step S207, error processing 0 is executed.

  When the data index in the flash memory is generated in step S208, an authentication OK signal is generated and transmitted to the host computer 6 in step S209. Here, the authentication mode is terminated, and the authentication mode flag is reset in step S210. In this way, if the authentication process is successful, the host computer 6 is permitted to use the flash memory 303 as an external storage device.

  In step S211, data reception from the host computer 6 or data transmission to the host computer 6 is performed according to the transfer mode, and index information is simultaneously transmitted and received. If data reception or transmission ends, the data transfer mode ends in step S212.

  FIG. 22 is a flowchart showing the operation of the control arithmetic unit 2. A program corresponding to this flowchart is stored in the ROM 316 and executed by the CPU 318.

  First, in step S302, it is determined whether or not the pointing tool 4 has been input. That is, it is determined whether or not coordinates are detected. If coordinates are detected, it is next determined in step S303 whether or not the transfer mode is set based on the pen switch information. If the transfer mode is determined in step S303, it is next determined in step S304 whether the authentication mode is set. Whether or not the authentication mode is in step S303 is determined by a signal transmitted from the host computer 6, and if it is determined that the authentication mode is selected, an authentication mode flag is set in step S305.

  Next, in step S306, it is determined whether coordinate input for sign authentication has been completed. For example, whether or not the coordinate input for sign authentication is completed is determined based on whether or not there is an input within a predetermined time after the authentication mode flag is set in step S305.

  Next, in step S307, an operation for conversion to data for authentication determination by the sign authentication engine is executed. That is, the coordinate value and input speed used in the signature authentication are determined, and the authentication data is transmitted to the pointing tool 4 in step S308. Next, in step S309, the authentication mode flag is reset, and normal coordinate calculation and coordinate output are executed in step S310.

  FIG. 23 is a flowchart showing the operation of the host computer 6. A program corresponding to this flowchart is included in the ROM 325 and executed by the CPU 324.

  First, in step S502, it is determined whether a coordinate value signal transmitted from the control arithmetic unit 2 of the coordinate input device 8 and a signal added to the signal have been received. When a signal is received in step S502, it is determined in step S503 whether or not it is a transfer mode based on the signal. This can be determined based on whether or not a file transfer request issued between the flash memory 303 and the host computer 6 issued when the pointing device performs the transfer mode operation is received. If it is determined here that the transfer mode is selected, the process proceeds to step S504, where the number of accesses in the transfer mode is checked. If it is determined that the transfer mode access is the first time, an authentication mode flag for changing to the authentication mode is set in step S505. In step S506, the transmitted coordinate value is transferred to a buffer (for example, RAM 326), and a signal indicating that the authentication mode has been entered is transmitted to the coordinate input device 8.

  In step S507, a predetermined window is displayed for the coordinate values previously transferred to the buffer. In this window, a list of files stored in the flash memory 303 in the pointing tool 4 and a signature authentication area are displayed. However, since authentication is not performed at this stage, the file list area has no meaning. No characters are displayed. That is, the file information is displayed in a manner that is not recognized by the viewer.

  Next, in step S508, an input to the signature authentication area is performed, and a state is waited for the coordinate value to be transmitted from the control arithmetic unit 2. Here, the coordinate input device 8 stops the transmission of the coordinate value itself in consideration of the safety of the data in the authentication mode, and performs processing such as transmitting the thinned data, for example. This is to cope with a case where an authentication data stealing program is installed on the host computer 6 side.

  Next, in step S510, the control unit 2 waits for an authentication OK signal transmitted from the control arithmetic unit 2. If it is determined in step S511 that the authentication is OK, the data index signal transmitted from the indicator 4 in step S512. Receive.

  In step S513, a list of data is displayed on the window. Thereby, when the operator selects data to be transferred, data transfer to the pointing device 4 is started.

  When each unit performs the above-described operation, the pointing tool 4 can be operated on the display image as shown in FIG. That is, data can be transferred to the flash memory 303 in the pointing device 4 by a series of continuous operations, and the security of the data is ensured.

  The continuous series of operations is as follows, for example. First, when it is desired to transfer data from the flash memory 303 to the host computer 6, it can be operated via the window shown on the left side of FIG. That is, when a file transfer is instructed at an arbitrary position 404 with the pointing tool 4, a window 405 is opened. If it is the first transfer mode at this time, a signature authentication area 407 for requesting signature authentication is displayed. The file list in the flash memory 303 of the pointing tool 4 can be displayed in 406, but at this time, the display is unrecognizable for the user.

  Next, when a registered user's signature is input to the signature authentication area 407, the file list 406 is displayed correctly. If the transfer mode is the second time or more and authentication is permitted, a window displaying a file list excluding the signature authentication area 407 is displayed at the time when the file transfer is instructed by the pointing tool 4. Become.

  On the other hand, when the data of the host computer 6 shown on the right side of the display area 402 in FIG. 24 is transferred to the flash memory 303 of the indicator 4, if the transfer mode is the first time after login, the authentication mode is set as described above. The action is executed. If the transfer mode is the second time or later, the icon 410 in the window 411 is pointed with the pointing tool 4, and the corresponding file is immediately transferred from the host computer 6 to the pointing tool 4. At this time, during the transfer period, an indicator may be displayed on the screen so that the operator can visually recognize the transfer status. Alternatively, an indicator may be displayed on the indicator 4.

  By configuring as described above, it becomes possible to easily transfer data from the host computer 6 such as a personal computer to another information processing device such as the pointing tool 4, and data stored in the pointing tool 4. Security can be ensured.

  Although the coordinate input device 8 described above is based on an optical system, it is possible to detect which position the pointing device 4 has indicated on the screen, and by transmitting the detected coordinate value to the host computer 6. If the operation of various applications is possible, it is not necessarily limited to the optical method, and other methods such as an ultrasonic method, an electromagnetic induction method, an electromagnetic transfer method, an electrostatic coupling method, and a resistive film method are used. May be.

  Further, the authentication method for the flash memory 303 in the pointing device 4 uses a pen-type input device as the pointing device 4, so that a sign authentication method with good operability is used. However, other methods can be used as long as an individual to be used can be specified. For example, the iris pattern image in the eyeball is converted into data, and the iris recognition that identifies the individual by comparing with the iris data of the person registered in advance, the frequency pattern of the voice is converted into data Voice face recognition for identifying individuals by comparing and collating with pre-registered person data, face image recognition for extracting feature points from face images and recognizing from geometric relational information such as intervals and places Also good. In any case, by installing an authentication function in an instruction tool for operating an application, it is possible to perform an authentication operation with excellent operability without having to carry it to a dedicated authentication device.

(When the coordinate input device is configured with a mouse)
As another embodiment, a case where a wireless communication system mouse is used as the coordinate input device 8 will be described. In the wireless communication system mouse, a host computer 6 and a mouse body as an input device are connected wirelessly, and communication is performed by infrared rays or radio waves.

  The hardware configuration of the information processing system in this case is shown in FIG. However, the same reference numerals are given to the same components as those in the above-described embodiment.

  The coordinate input device includes a mouse unit 20 and a control unit 21. The mouse unit 20 incorporates a flash memory 505, and access control to the flash memory 505 is performed by a fingerprint authentication method. In the personal authentication by fingerprint, the registered fingerprint and the inputted fingerprint are compared and collated, and when it is determined that they are sufficiently matched, the identity is determined. The fingerprint collation algorithm collates the correlation between feature points such as the direction and positional relationship of the feature points (end points and branch points of ridges) included in the fingerprint pattern, and has high fingerprint collation capability. Yes. Fingerprint authentication is realized by a fingerprint authentication engine program and a fingerprint authentication database stored in the ROM 507, which is performed on fingerprint data input to a fingerprint authentication circuit 512 including an image sensor and a processing circuit. Is called. The operation at this time is referred to as “authentication mode” as in the above-described embodiment.

  When the fingerprint authentication operation is performed in the authentication mode, the fingerprint authentication of the operator is completed, and the access to the flash memory 505 of the mouse unit 20 is permitted, the transfer from the flash memory 505 to the host computer 6 is performed. Alternatively, the operator can select whether to transfer from the host computer 6 to the flash memory 505. This operation is called “transfer mode” in the same manner as in the previous embodiment. When viewed from the mouse unit 20 side, “transfer mode” is used when transferring to the host computer 6, and “receive” is set when transferring from the host computer 6. The mode is assigned to the switches SW1 (501), SW2 (502), and SW3 (503) of the mouse unit 20, and can be appropriately switched by pressing this switch.

  With this configuration, the cursor displayed on the display device 7 is operated to indicate the window to be transferred or the icon displayed on the display device 7 is specified as in the above-described embodiment. As a result, data transfer between the flash memory 505 in the mouse unit 20 and the host computer 6 is executed.

  That is, with the above configuration, even when a mouse is configured as an input device for operating an information processing apparatus such as a personal computer, data transfer to the information processing apparatus can be easily performed. The same effect as that of the above-described embodiment that the security of the data stored in the file can be secured can be obtained.

(Other embodiments)
When the information processing system including the coordinate input device described so far is used as a conference system by permanently installing it in a conference room, etc. User authentication data must be registered in the authentication database in advance. In this case, a plurality of operators will alternately use the input instruction tool. At that time, by assigning the use area of the flash memory in the input instruction tool to the registered user, it is possible to access data efficiently, and data transfer comfortable for the operator is possible.

  In addition, when a plurality of input instruction tools are used for an information processing apparatus having one display device, information displayed on the display device is shared and each user brings this input instruction tool. Thus, a usage form for personal use can be considered. For example, when you bring a notebook computer, etc. to participate in a meeting, the input instruction tool is used as a data transfer medium between the notebook computer and the host computer that you bring even if the network is not connected to the host computer in the meeting room. can do. Even in this case, each user can transfer data to the display information by a direct operation without connecting to the port of the host computer, so that the information processing apparatus is excellent in operability and easy to use.

  By the way, when there are a plurality of input indicating tools, it is preferable that the data transferred from the flash memory of each pointing tool to the host computer should have a file system that takes security into consideration with the access right after transfer. In particular, when used in a shared system, an unspecified number of accesses to the transferred data can be considered. In addition, it is not preferable that the user permission on the host computer side is broken by some means, and processing such as data tampering or unauthorized copying becomes possible. Therefore, this apparatus has means for adding an ID to the file data transferred from the flash memory of the input instruction tool. That is, it is possible to control access to various data by adding the input instruction tool ID and the user ID to the transfer data attribute and transferring them to the host computer 6.

  The process of adding the ID to the file attribute is executed by the CPU in the pointing tool and transferred to the flash memory. The ID to be added is set one-to-one for each pen (indicator). If the unique ID for this pen is called a pen ID, the pen ID is stored in advance in the ROM in the pen. Read from the CPU as appropriate.

  For the file transferred from the pen to the host computer, the host computer application checks the file attributes. When the pen ID is added to the file attribute, it is possible to determine from which pen among the plurality of pens used in the application the file has been transferred. In addition to the above, the ID of the operator who executed the above-described authentication operation is added to the attribute of the transfer file, so that the user ID information is added to the transferred data in the host computer. It is possible to determine whether the data has been transferred.

  By adding the pen ID or user ID to the file attribute in this way, the host computer can control access control such as browsing, correction, and writing on the file in units of pens or in units of users. It will have a security function.

  On the other hand, when a file is transferred from the host computer to the pen, the pen side checks the transferred file attribute to confirm whether the pen ID or the pen user ID has already been attached. If the data received from the host computer is data without ID, an ID is newly added to the file attribute. If another pen ID or user ID has already been added, the history information stored as time-series data is updated to update the ID. As described above, the ID history information is updated even for the file transferred from the host computer 6 and the pen and user information is monitored to effectively improve the secondary use of the data. Is possible.

(When the input indicator storage means is detachable)
In the above-described embodiment, a usage pattern in which a user uses a shared display device and an information processing device using a dedicated input instruction tool has been described. However, it goes without saying that it is preferable that the storage medium to be carried is small and light. Therefore, in the following, the case where the configuration of the input pointing tool is configured so that the storage means and the input pointing tool main body are detachable will be described.

  When conducting a meeting using a shared display, it is conceivable to prepare a document in advance and bring it as an electronic document. However, as mentioned above, it is possible to save data in the pointing device and participate in a meeting. It is as follows. However, when the information processing system including the coordinate input device according to the present embodiment is permanently installed in a conference room or the like, the input pen as the pointing tool has a storage device, and thus the information processing in which the input pen is also permanently installed. There may be a case where it is desired to leave it attached to the device. Therefore, by making the storage means detachable, the personal data can be transferred to a computer on hand at another location by connecting the memory as the storage means to a serial port etc. It was set as the structure which can be used by connecting with an indicator main body when using it. By adopting such a configuration, the same effect as described above can be obtained.

  FIG. 26 shows a schematic configuration diagram of an indicating tool to which the memory portion can be attached and detached. This indicator has a configuration in which a housing (memory portion) 601 containing a flash memory and a housing 604 having a drive circuit and a switch as described above can be connected by connectors 602 and 603. The connector 602 has a connection specification common to, for example, a serial port of a personal computer. Therefore, it can be used as a general-purpose memory device regardless of whether the information processing system is used or not. On the other hand, the input pen body 604 has no storage means, but can be used alone as an input pen (indicator) of the coordinate input device.

  With the above configuration, the storage unit can be used as a general-purpose device as in the above-described embodiment, and data can be transferred to the host computer by connecting to the input pen.

  As mentioned above, although embodiment of this invention was explained in full detail, this invention may be applied to the system comprised from several apparatuses, and may be applied to the apparatus which consists of one apparatus.

  In the present invention, a software program that realizes the functions of the above-described embodiments is directly or remotely supplied to a system or apparatus, and the computer of the system or apparatus reads and executes the supplied program code. Is also achieved. In that case, as long as it has the function of a program, the form does not need to be a program.

  Therefore, in order to realize the functional processing of the present invention with a computer, the program code itself installed in the computer and the storage medium storing the program also constitute the present invention. In other words, the claims of the present invention include the computer program itself for realizing the functional processing of the present invention and a storage medium storing the program.

  In this case, the program may be in any form as long as it has a program function, such as an object code, a program executed by an interpreter, or script data supplied to the OS.

  As a storage medium for supplying the program, for example, flexible disk, hard disk, optical disk, magneto-optical disk, MO, CD-ROM, CD-R, CD-RW, magnetic tape, nonvolatile memory card, ROM, DVD (DVD-ROM, DVD-R).

  As another program supply method, a client computer browser is used to connect to an Internet homepage, and the computer program of the present invention itself or a compressed file including an automatic installation function is downloaded from the homepage to a storage medium such as a hard disk. Can also be supplied. It can also be realized by dividing the program code constituting the program of the present invention into a plurality of files and downloading each file from a different homepage. That is, a WWW server that allows a plurality of users to download a program file for realizing the functional processing of the present invention on a computer is also included in the claims of the present invention.

  In addition, the program of the present invention is encrypted, stored in a storage medium such as a CD-ROM, distributed to users, and key information for decryption is downloaded from a homepage via the Internet to users who have cleared predetermined conditions. It is also possible to execute the encrypted program by using the key information and install the program on a computer.

  In addition to the functions of the above-described embodiments being realized by the computer executing the read program, the OS running on the computer based on the instruction of the program is a part of the actual processing. Alternatively, the functions of the above-described embodiment can be realized by performing all of the processes.

  Furthermore, after the program read from the storage medium is written to a memory provided in a function expansion board inserted into the computer or a function expansion unit connected to the computer, the function expansion board or The CPU or the like provided in the function expansion unit performs part or all of the actual processing, and the functions of the above-described embodiments are realized by the processing.

1 is an external perspective view of an image display / input unit of an information processing system according to an embodiment. It is a figure showing a schematic hardware configuration of an information processing system in an embodiment. It is a figure explaining the function of the reflector in an embodiment. It is a figure which shows the structure of the light projector in embodiment. It is a figure which shows the structure of the light receiver in embodiment. It is a figure which shows the structure of the sensor unit in embodiment. It is a figure which shows the example of a characteristic of the reflected light quantity with respect to an incident angle. It is a figure which shows the structural example of the attachment member of the retroreflection member in embodiment. It is a block diagram which shows the structure of the control and arithmetic unit in embodiment. It is a timing chart of the signal which concerns on LED light emission in embodiment. It is a figure which shows an example of the light quantity distribution of the sensor unit output in embodiment. It is a figure which shows an example of light quantity distribution of the sensor unit output when input is performed with a finger | toe etc. FIG. It is a figure for demonstrating the angle calculation in embodiment. It is explanatory drawing about a light quantity change. It is explanatory drawing of a light quantity change amount and a light quantity change rate. It is a figure which shows the example of a detection of the light-shielding range. It is the figure obtained by plotting tan (theta) value with respect to a pixel number. It is explanatory drawing of the coordinate calculation in embodiment. It is a flowchart which shows the process from the data acquisition in embodiment to coordinate calculation. It is a figure which shows the structure of the indicator in embodiment. It is a block diagram which shows the detailed hardware constitutions of the information processing system in embodiment. It is a flowchart which shows operation | movement of the indicator in embodiment. It is a flowchart which shows operation | movement of the control arithmetic unit in embodiment. It is a flowchart which shows operation | movement of the host computer in embodiment. It is a figure explaining the example of operation which concerns on the file transfer between the instruction | indication tool and host computer in embodiment. It is a block diagram which shows the detailed hardware constitutions of the information processing system in other embodiment. It is a schematic block diagram of the indicator which made the memory part removable.

Claims (6)

A display device for displaying an image;
An indicator having a memory medium capable of rewriting data;
An input device for inputting information related to an operation by the pointing tool in an input region provided on a display surface of an image by the display device;
A host device that performs control processing according to information input by the input device;
An information processing system having
The input device is:
Said memory medium is issued by a predetermined operation of the pointing device - whether when it detects a request for file transfer between the host device performs the operation of the authentication mode for authentication for access to said memory medium Determining means for determining based on a signal from the host device;
Conversion means for converting the information input by the pointing device into authentication data when it is determined by the determination means to perform the operation in the authentication mode;
Transmitting means for transmitting the authentication data obtained by the converting means to the pointing device;
Have
The indicator is
An information processing system comprising authentication means for performing authentication processing based on the authentication data received from the input device. The host device may have a display control means for controlling the display of a list of the memory medium is stored in a file in after receiving the request for the file transfer, the display control unit, the authentication by the pointing tool 2. The information processing system according to claim 1, wherein before the processing is successful, the file list is displayed in a manner in which the file information is not recognized.   The information processing system according to claim 1, wherein the pointing device is configured such that a portion including the memory medium is detachable. A display device for displaying an image;
An indicator having a memory medium capable of rewriting data;
A host device that performs control processing according to information input by the pointing tool;
To be connected, a control method of an input device for inputting information according to the operation by the pointing device on the display device input area provided on the display surface of the image by,
Said memory medium is issued by a predetermined operation of the pointing device - whether when it detects a request for file transfer between the host device performs the operation of the authentication mode for authentication for access to said memory medium Determining step based on a signal from the host device;
A conversion step of converting information input by the pointing tool into authentication data when it is determined in the determination step that the operation in the authentication mode is performed;
A transmission step of transmitting the authentication data obtained in the conversion step to the indicator;
A control method for an input device, comprising: A display device for displaying an image;
An indicator having a memory medium capable of rewriting data;
A host device that performs control processing according to information input by the pointing tool;
To be connected respectively, a said display device an image control program thus executed to an input device for inputting information according to the operation by the pointing device at the display surface provided input region of by,
Said memory medium is issued by a predetermined operation of the pointing device - whether when it detects a request for file transfer between the host device performs the operation of the authentication mode for authentication for access to said memory medium Determining step based on a signal from the host device,
A conversion step of converting information input by the pointing tool into authentication data when it is determined in the determination step that the operation in the authentication mode is performed;
A transmitting step of transmitting the authentication data obtained in the converting step to the pointing device ;
A control program for causing the input device to execute . A display device for displaying an image;
An indicator having a memory medium capable of rewriting data;
A host device that performs control processing according to information input by the pointing tool;
To be connected, an input equipment for inputting information relating to the operation by the pointing device in the input area provided on the display surface of the image by the display device,
Said memory medium is issued by a predetermined operation of the pointing device - whether when it detects a request for file transfer between the host device performs the operation of the authentication mode for authentication for access to said memory medium Determining means for determining based on a signal from the host device;
Conversion means for converting the information input by the pointing device into authentication data when it is determined by the determination means to perform the operation in the authentication mode;
Transmitting means for transmitting the authentication data obtained by the converting means to the pointing device;
An input device comprising:

Images