JP4448675B2 - Authentication device and electronic device - Google Patents

Description

  The present invention relates to an authentication device for authenticating a user and an electronic apparatus having an authentication function.

Conventionally, some in-vehicle electronic devices such as car audio and car navigation perform user authentication to prevent theft. For example, in this type of in-vehicle electronic device, when the power supply is opened after the backup power is turned off, etc., an input of a password is requested, and if the password does not match the one stored in advance, the operation is not accepted There is. A multi-digit number is applied to the password, and the user operates a key (for example, a radio preset channel selection key) to input the password (for example, a radio preset channel selection key). Patent Document 1).
Japanese Patent Laid-Open No. 2-306839

  However, since it is widely known that the password is composed of numbers, the thief can easily grasp that the numbered key is a key for inputting the password. In addition, when the password can be set freely by the user, since the ratio of the date of birth is high, it may be set to a number that can be easily predicted by the theft. As described above, since a widely-known PIN code input method is employed, there is an aspect that the security is reduced accordingly.

  The present invention has been made in view of the above-described circumstances, and an object thereof is to provide an authentication device capable of improving security and an electronic device having an authentication function.

In order to solve the above-described problems, the present invention provides an authentication apparatus for authenticating a user . The touch panel inputs a touch operation by the user and surrounds the operation area of the touch panel. Is a guide frame having a constricted shape projecting inward in the vicinity of the boundary between a plurality of adjacent areas divided indistinguishably, and the operation position of the touch panel operated by the user is any place in the plurality of areas And authentication processing means for authenticating the user according to whether or not the operations of the plurality of areas coincide with a preset operation order. According to this configuration, it is possible other than legitimate user to make it difficult to enter the authentication information.

In the above-described configuration, it is preferable that boundaries between the plurality of regions be provided indistinguishable, and that information indicating the operation unit is not indicated or information other than the information is preferably indicated. .

In the above configuration, an operation position detecting means for detecting a touch operation position by the user of the touch panel, based on the touch operation position where the operation position detecting means detects, is any operation of said plurality of areas It is preferable to have an operation specifying means for specifying the above.

Moreover, in the said structure, the said touch panel is formed with a substantially transparent member, and it shows that it is an operation part to the display means arrange | positioned so that a screen may be located in the back side of the said touch panel. It is preferable to have display control means for displaying information other than information.

According to the present invention, in an electronic device having an authentication function for authenticating a user, the touch panel for inputting a touch operation by the user, the operation area of the touch panel is surrounded, and the operation area is externally viewed. Is a guide frame having a constricted shape projecting inward in the vicinity of the boundary between a plurality of adjacent areas divided indistinguishably, and the operation position of the touch panel operated by the user is any place in the plurality of areas Authentication processing means for authenticating the user according to whether or not the operations of the plurality of areas match a preset operation order, and operation of the operation input means when authentication is obtained And a control means for receiving. According to this configuration, it is possible other than legitimate user to make it difficult to enter the authentication information.

The present invention can be other than legitimate user to make it difficult to enter the authentication information.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings.

  FIG. 1 is a front view of a car audio device 10 which is an electronic apparatus according to the present embodiment. The car audio device 10 is generally configured by a device main body (device main body) 1 and a detachable control panel (hereinafter referred to as DCP (Detachable Control Panel)) 15 that functions as an operation input unit (operation input means). FIG. 2 is a front view of the apparatus main body 1. A CD (Compact Disc) insertion slot 2 a and a memory card (flash memory card or compact memory card: hereinafter simply referred to as “memory”) insertion slot 2 b are formed on the front surface of the apparatus body 1. FIG. 1 shows a state in which the DCP 15 is mounted on the front surface of the apparatus main body 1.

  FIG. 3 is a rear view of the DCP 15. For details of the DCP 15 mounting structure, as shown in FIG. 3, two engagement protrusions 3a and 3b and one engagement receiver 4 are formed on the back surface of the DCP 15, and a connector contact 5 is provided. Further, as shown in FIG. 1, a support plate 9 for attaching the DCP 15 is provided on the front surface of the apparatus main body 1, and two engagement receivers 6a, 6b and 1 are provided on the support plate 9. Two engaging projections 7 are formed and a connector contact 8 is provided. Under this configuration, the engagement receiver 4 on the back surface of the DCP 15 is pushed into the engagement protrusion 7 on the support plate 9 of the apparatus main body 1 to engage one end side of the DCP 15 with the apparatus main body 1. A structure in which the DCP 15 is attached to the front surface of the apparatus main body 1 by pushing the engagement protrusions 3a and 3b and the connector contact 5 into the engagement receivers 6a and 6b and the connector contact 8 on the support plate 9 of the apparatus main body 1 to engage with each other. It has become.

  When the DCP 15 is attached to the apparatus main body 1, a command signal between the DCP 15 side and the apparatus main body 1 via the connector contacts 5 and 8, a signal for displaying various information on the display unit of the DCP 15, etc. Sent and received.

  Further, when the DCP 15 is attached to the front surface of the apparatus main body 1, the DCP 15 covers the insertion port 2 such as a CD. In this state, when the open key 21a disposed at the upper left end of the DCP 15 is pressed deeply, the support plate 9 and the DCP 15 are tilted by an arm (not shown) as shown in FIG. And the insertion ports 2a and 2b are exposed. In this state, the DCP 15 and the support plate 9 are tilted forward, and the CD or the memory card is inserted into the insertion openings 2a and 2b.

  As described above, the DCP 15 as the operation input unit is configured to be detachable from the apparatus main body 1, and if the user removes the DCP 15 and takes it out when the user gets out of the car, even if a thief looks at the apparatus main body 1, Seeing that there is no essential display part and no operation input part, it realizes that the device body 1 cannot be used or resold, and has an anti-theft effect of giving up stealing.

  Next, the configuration of the DCP 15 will be described in detail. As shown in FIG. 1, the DCP 15 is fitted into the DCP case 16, the guide frame 17 provided in front of the DCP case 16, the guide frame 17, and the display unit. And a transparent touch panel 20 provided on the liquid crystal panel 19. The DCP case 16 is also provided with a plurality of operation keys. As these operation keys, in addition to the open key 21a, there are an operation key 21b for turning on the main power of the apparatus main body 1 and adjusting the volume. The operation key 21b is configured as a button-type rotary operator. When the operation key 21b is pressed, the power is turned on and off, and the volume of reproduced sound is adjusted by the rotation operation. In the DCP 15, the touch panel 20 is disposed on the front side of the liquid crystal panel 19, and various information is displayed on the area of the touch panel 20 by the liquid crystal panel 19.

  The touch panel 20 is a single transparent touch panel. As shown in FIG. 1, the touch panel 20 has first to fifth regions R1 to R5 divided into five adjacent regions, and each of the first to fifth regions R1 to R5 is one. Functions as an independent operation unit. In addition, the touch panel 20 does not clearly indicate that the first to fifth regions R1 to R5 are operation units, or does not print information that clearly indicates the boundaries of the operation regions. The first to fifth regions R1 to R5 are indistinguishable and have a simple appearance similar to a general screen protective cover.

  The guide frame 17 functions as a guide for easily identifying each of the first to fifth regions R1 to R5 for a legitimate user who knows that the panel 20 surrounded by the frame is a touch panel. . In other words, the guide frame 17 is recognized as a mere design component for those who do not know that the panel 20 is a touch panel. Specifically, the guide frame 17 has a shape that protrudes inward in the vicinity of the boundary between the first to fifth regions R1 to R5, and each region is divided by a legitimate user at the constricted portion. It can be visually confirmed and can be confirmed by groping. In addition, when driving the car audio device 10, the driver (user) cannot watch the touch panel 20, grasp the approximate position by groping, and operate the touch panel 20. I have to. Even in such a case, in the present embodiment, the driver can easily find the approximate position of each of the first to fifth regions R1 to R5 by finding the constricted portion of the guide frame 17 by hand. Therefore, it is possible to perform an appropriate operation without looking at the touch panel 20.

  FIG. 5 is a block diagram showing a functional configuration of the car audio device 10. As shown in the figure, the apparatus main body 1 includes a master microcomputer 100, a radio reception unit 110, a reproduction unit 120, and a recording medium reading unit 130, when roughly classified. Although not shown, the recording main body 1 is connected to a backup power source directly connected to the vehicle battery and an ACC power source connected to the battery via a car key switch.

  The master microcomputer (control means) 100 executes control of each part of the apparatus main body 1 and the DCP 15, and has a built-in storage medium such as a ROM or a RAM. A control program for performing reception processing, authentication processing described later, and the like are stored. The master microcomputer 100 also functions as a mounting detection unit that detects whether or not the DCP 15 is mounted on the apparatus main body 1 and a display control unit that controls the display content of the liquid crystal panel 19. More specifically, the master microcomputer 100 monitors the voltage of the connector contact 8 and detects a change in voltage when the connector contact 8 and the connector contact 5 of the DCP 15 are engaged, thereby confirming that the DCP 15 is mounted. To detect. The master microcomputer 100 may detect that the DCP 15 is attached by communicating with a display microcomputer 152 (described later) in the apparatus main body 1, and may detect attachment and detachment by a conventional method other than the above. May be.

  The radio receiver 110 receives AM / FM radio waves, and includes an antenna 111 and a tuner circuit 112. The tuner circuit 112 receives radio waves based on a command from the master microcomputer 100, and The data is output to the playback unit 120.

  The reproduction unit 120 reproduces sound based on output signals from the master microcomputer 100, the radio reception unit 110, and the recording medium reading unit 120, and includes an electronic volume circuit 121, a mute circuit 122, and an amplifier 123. And. The electronic volume circuit 121 adjusts the signal level after D / A conversion of the input signal and outputs it to the mute circuit 122 in order to adjust the reproduction volume based on the command of the master microcomputer 100. The mute circuit 122 cuts off the signal output of the reproduced sound from the amplifier 123 based on a command from the master microcomputer 100 when the external sound device 160 is connected to the device main body 1 or the like. The amplifier 123 amplifies the output signal from the electronic volume circuit 121 with a predetermined amplification ratio and outputs it to the external speaker SP to reproduce the sound.

  For example, when the external volume decoder 161 of the external sound device 160 is connected to the electronic volume 121 via an RCA connector made of, for example, a two-wire coaxial cable, the electronic volume 121 is connected to the external volume decoder 161. In addition to the signal output to the mute circuit 122, the signal is also output to the coder 160 by external surround.

  The external surround decoder 161 receives the analog signal output from the electronic volume circuit 121, adds an acoustic effect (for example, reverberation sound) or the like to enhance the surround effect, and outputs the signal to the external amplifier unit 162. The external amplifier unit 162 includes as many amplifier circuits (not shown) as the number of connected external speakers SP ', and amplifies the output signal from the external surround decoder 161 and outputs the amplified signal to the external speaker SP'. The external surround decoder 161 is connected to the electronic volume 121 via a digital optical cable or the like, and can receive a digital signal from the electronic volume 121. The digital signal includes a surround signal such as a Dolby digital signal. If so, an analog signal is output to the external amplifier unit 162 after decoding the signal.

  When the external sound device 160 is connected to the apparatus main body 1, the bus connection between the external surround decoder 161 and the master microcomputer 100 is made in addition to the connection between the electronic volume 121 and the external sound decoder 161. Similar to the connection between the display microcomputer 152 and the master microcomputer 100, this bus connection is performed by coupling connector contacts (not shown), and various connections are made between the master microcomputer 100 and the external surround decoder 161 via this bus connection. Signals are exchanged.

  For example, when the external sound device 160 is connected to the device main body 1, the identification ID of the own device, the type of device, the presence / absence of an external amplifier unit, etc. from the external surround decoder 161 to the master microcomputer 100 via the bus connection. Is output. If the master microcomputer 100 determines that a device including the external amplifier unit 162 (or a device to which the external amplifier unit 162 is indispensable) is connected as an external device based on such information, the mute circuit 122 is set. By controlling, the signal output from the amplifier 123 inside the apparatus main body 1 is cut off.

  Here, when the mute circuit 122 cuts off the signal output from the amplifier 123, the power supply to the amplifier 123 is cut off and the operation of the amplifier 123 is stopped, or the amplifier 123 is operated while the amplifier 123 is being operated. Is interrupted, and the master microcomputer 100 instructs which one to execute.

  The recording medium reading unit 130 reads a CD and reads / writes a memory (memory card or the like), and includes a DSP (Digital Signal Processor) 131 and a mechanical microcomputer 132. The DSP 131 decodes music data read from the CD and the memory and outputs the decoded data to the reproducing unit 120, and at the time of writing to the memory, the encoded data is written to the memory. The mechanical microcomputer 132 performs CD disk rotation speed control, tracking control, and the like by feedback control based on a pulse signal synchronized with rotation of a disk rotation motor (not shown) and a signal from an optical pickup (not shown). .

  As described above, the DCP 15 includes the liquid crystal panel 19, the touch panel 20, and operation keys (21a, 21b, etc.), a display microcomputer 152 that controls each part of the DCP 15, and an instruction from the display microcomputer 152. The liquid crystal panel 19 has an LCD driver 151 for displaying various information. When the DCP 15 is mounted on the apparatus main body 1, the display microcomputer 152 of the DCP 15 and the master microcomputer 100 of the apparatus main body 1 are electrically connected by the connector contacts 5 and 8 to exchange various signals. For example, when the operation key 21b (see FIG. 2), which is one of the operation keys 21, is rotated and the volume is adjusted by the user, the rotation operation amount is detected by a rotary encoder (not shown) and displayed. It is transmitted from the microcomputer 152 to the master microcomputer 100. As a result, the master microcomputer 100 controls the electronic volume circuit 121 so that the reproduction volume becomes a volume corresponding to the rotation operation amount of the operation key 21b.

The display microcomputer 152 also functions as an operation position detection unit that detects the operation position of the touch panel 20. In the embodiment, a resistive film type touch panel is used as the touch panel 20. When a hand touches the surface of the touch panel 20, a voltage signal corresponding to the position coordinates of the contact point is output. The contact point coordinates are specified based on the signal. Each of the first to fifth regions R1 to R5 in the touch panel 20 is set by virtually dividing one touch panel 20 as follows. That is, when the upper left corner of the touch panel 20 is the XY origin (0, 0) and the XY coordinates of the lower right corner is (255, 255),
First region R1: 0 ≦ X <80 and 0 ≦ Y ≦ 255
Second region R2: 80 ≦ X <150 and 0 ≦ Y ≦ 255
Third region R3: 150 ≦ X <220 and 0 ≦ Y ≦ 255
Fourth region R4: 220 ≦ X <255 and 0 ≦ Y <128
Fifth region R5: 220 ≦ X <255 and 128 ≦ Y ≦ 256
It is.

  Under such a configuration, when a user (driver or the like) touches the touch panel 20 with a hand or the like, the display microcomputer 152 of the DCP 15 detects the pressed point as an XY coordinate, and the pressed point coordinate is the master of the apparatus main body 1. Output to the microcomputer 100. Then, based on the output from the display microcomputer 152, the master microcomputer 100 identifies the place operated by the user as one of the first to fifth areas. That is, the master microcomputer 100 also functions as an operation specifying unit that specifies which of the first to fifth regions R1 to R5 of the touch panel 20 has been operated. As a result, it is assumed that the area including the pressed point coordinates has been operated by the master microcomputer 100, and a function associated with the operation in this area is executed in advance.

  As described above, when the touch panel 20 is divided into a plurality of regions such as the first to fifth regions R1 to R5, each of the regions is divided so as to be in contact with at least one of the other regions. In the entire region of the limited touch panel 20, the area of each region can be maximized. Each of these first to fifth regions R1 to R5 functions as an independent operation element, and the operability can be improved by increasing the size of each operation element in this way. . In particular, in-vehicle electronic devices such as car audio devices are often operated by a driving driver, and thus, by increasing the size of each operation element, even during driving, It is possible to easily identify the location of each operation element, and to prevent the operation from being hindered during the operation of the in-vehicle electronic device.

  Next, an example of the operation of the touch panel 20 will be described. FIG. 7 is a diagram showing a display example when information related to CD playback is displayed on the liquid crystal panel 19. As shown in this figure, in the liquid crystal panel 19, the CD belonging to the first region R1 is schematically shown along with the diagram showing the CD, and when currently being played, the CD track being played and the track of the track are shown. The playback time is displayed. When playback is in progress, the title of the music being played is displayed at the location belonging to the second region R2. In the third area R3, the artist name of the music being played is displayed and currently selected or played when playing any of a plurality of CDs stored in an externally connected CD changer (not shown). A display is provided to identify the number of the CD in the CD. In the fourth area R4, “MODE” is displayed, which indicates that the fourth area R4 is an operation area for calling various setting modes such as a volume adjustment screen and a setting screen for the speaker SP. The fifth area R5 is displayed with “DISC UP” indicating that the fifth area R5 is a CD switching operation area.

  When the display on the liquid crystal panel 19 is performed, when the user presses a location where “DISC UP” is displayed, the coordinates of the pressed point at this time are output from the display microcomputer 152 to the master microcomputer 100. Then, the master microcomputer 100 specifies that the pressed point coordinates belong to the fifth region R5 based on the coordinate settings of the first to fifth regions R1 to R5, and gives an instruction to the CD changer, etc. The switching control is executed.

  As described above, in the DCP 15 according to the present embodiment, the entire area of the touch panel 20 is divided into a plurality of areas such as the first to fifth areas R1 to R5. In this example, only the approximate positions of the first to fifth regions R1 to R5 are displayed without displaying the boundary lines that clearly indicate the boundaries of the first to fifth regions R1 to R5. Further, each of the first to fifth regions R1 to R5 is always in contact with another region so as to maximize the region area. Therefore, for example, when the driver (driver) operates the touch panel 20 by groping while driving, the driver does not intend when he / she presses the vicinity of the boundary between the areas and belongs to the adjacent area depending on the pressed position. The action will be executed.

  Therefore, in the present embodiment, when the dead zone Z is set near the boundary of each of the first to fifth regions R1 to R5, and the pressed portion is the dead zone Z, the operation itself is performed. Is regarded as invalid.

  In detail, as shown in FIG. 6, the dead zone Z includes a dead zone Za including a boundary A between the first region R1 and the second region R2, a second region R2, and a third region R3. A dead zone Zb including a boundary between the third region R3, a dead zone Zc including a boundary C between the third region R3 and the fourth and fifth regions R4 and R5, and a boundary D between the fourth region R4 and the fifth region R5. A dead zone Zd is set. The area widths of these dead zones Z are set so as not to unnecessarily narrow the areas of the first to fifth areas R1 to R5.

  Under this configuration, for example, when the touch panel 20 is pressed (touch operation) by the user, the display microcomputer 152 outputs the pressed point coordinates (or the barycentric coordinates when there are a plurality of pressed point coordinates) to the master microcomputer 100. Is done. Then, the master microcomputer 100 determines whether the pressed point coordinates belong to any one of the first to fifth regions R1 to R5 or the dead zones Za to Zd, and the pressed point coordinates are dead. If it belongs to the zones Za to Zd, the current pressing operation is invalidated. On the other hand, when the pressed point coordinates belong to any of the first to fifth regions R1 to R5, it is considered that the region to which the button belongs has been operated, and therefore an operation associated with the region is executed in advance. .

  In this way, due to the configuration in which the dead zone Z (Za, Zb, Zc) is set in the vicinity of each boundary of the first to fifth regions R1 to R5, an operation contrary to the intention because the user has pressed the vicinity of the boundary. Is prevented from being executed.

  In the present embodiment, when any one of the first to fifth regions R1 to R5 is operated, the apparatus main body 1 further executes depending on the operation mode in that case. The processing is different. As operation modes when operating the touch panel 20, the following six operation modes are defined as shown in FIG. That is, there are six operations: a short press operation, a long press operation, a right slide operation, a left slide operation, a right slide operation + long press operation, and a left slide operation + long press operation.

  Specifically, the short time pressing operation is an operation for quickly pressing the touch panel 20 once. The long pressing operation is an operation of releasing the hand after maintaining the pressed state for a while when the touch panel 20 is pressed. That is, the short time pressing operation and the long time pressing operation are distinguished by the length of time during which one point is pressed. The right slide operation is an operation of tracing the surface of the touch panel 20 in the right direction, and the left slide operation is an operation of tracing in the left direction. The right slide operation + long-press operation is an operation of keeping the traced end point pressed for a long time without releasing your hand after tracing the surface of the touch panel 20 to the right, or touching the surface of the touch panel 20. This is an operation that keeps tracing for a predetermined time. The left slide operation + long-time press operation is a slide operation direction in the right slide operation + long-time press operation reversed (left direction).

  FIG. 8 described above exemplifies processing executed when the first region R1 is operated as an operation during CD playback, in addition to the above operation mode. As shown in FIG. 8, when a short time pressing operation is performed on the first region R1, a sound source switching operation is performed. For example, every time the short time pressing operation is performed, CD → Cyclic switching is performed from memory to radio. In addition, when a pressing operation is performed for a long time, an operation mode switching operation is performed. When the operation mode is switched, in addition to the touch panel operation, an operation similar to the conventional one using each operation key provided on the touch panel 20 can be performed. When a right slide operation is performed, an operation is performed to track up only one CD track being played back. Conversely, when a left slide operation is performed, a CD track being played is set to 1 Only one track down operation is performed. In addition, when a right slide operation + long-time pressing operation is performed, while the key is being pressed, an operation is performed in which the CD track being played is sequentially tracked up, and a left slide operation + long-time pressing operation is performed. In the case where it has been done, while the key is being pressed, an operation is performed in which the CD track being played is sequentially tracked down.

  As described above, in this car audio device 10, since the DCP 15 is detachable, if the user removes the DCP 15 and takes it out when the user gets out of the car, the operation becomes impossible and it is difficult to be stolen. Furthermore, in this car audio device, even if only the device main body 1 is stolen and the thief obtains the DCP 15 elsewhere, the user authentication is performed when the DCP 15 is mounted so that the car audio device 10 cannot be used. Has been made to do. FIG. 9 is a flowchart showing an example of the authentication start process. This process is executed when the power is turned on for the first time after the DCP 15 is mounted. FIG. 10 and FIG. 11 are diagrams showing an example of a display screen at the time of the authentication start process.

  First, the master microcomputer 100 determines whether or not the DCP 15 is attached to the apparatus main body 1 (step S1). Specifically, when the DCP 15 is attached to the apparatus main body 1, the voltage of the connector contact 8 of the apparatus main body 1 is lower than when the DCP 15 is not attached. It is determined whether or not the DCP 15 is attached to the apparatus main body 1 by determining whether or not the voltage of the connector contact 8 is equal to or less than a predetermined threshold value. When it is determined that the DCP 15 is not attached to the apparatus main body 1, the master microcomputer 100 proceeds to the process of step S 1, while when it is determined that the DCP 15 is attached to the apparatus main body 1, a password (authentication information) is sent to the user. ) Is displayed on the liquid crystal panel 19 (step S2). However, information other than information that can identify the first to fifth regions R1 to R5 is displayed on the input screen of the password, and more preferably information that cannot be identified even when the operation of the touch panel 20 is requested. Is displayed. Specifically, as shown in FIG. 10, only a message such as “SECURITY CODE?” Is displayed, and the operation of the first to fifth regions R1 to R5 of the touch panel 20 is requested only by this display information. Is indistinguishable.

  Next, the master microcomputer 100 waits for input of the operation of the touch panel 20 (step S3). When the touch panel 20 is pressed (step S3: YES), the coordinates of the operation position are input from the display microcomputer 152, The operation area is specified as one of the first to fifth areas, and an identifier indicating the specified operation area is stored in a predetermined area of the RAM (step S4). At this time, the master microcomputer 100 sequentially lights and displays the predetermined areas 19a, 19b, 19c, and 19d (see FIG. 10) of the liquid crystal panel 19 by the number of input operations. Subsequently, the master microcomputer 100 determines whether or not the input is completed, that is, whether or not the number of operations of the touch panel 20 matches the preset number of personal identification codes (four in this embodiment) ( Step S5) If the input is not completed, the process proceeds to step S3. If the input has been completed, the master microcomputer 100 executes an authentication process based on the identifier stored in the RAM (step S6). In the present embodiment, four identifiers indicating the operation order of the first to fifth areas are stored in advance in the ROM of the master microcomputer 100 as information serving as authentication standards, and the master microcomputer 100 stores the information in the RAM. An authentication process is performed to determine whether or not the set of four identifiers and the set of identifiers stored in the ROM are completely matched (step S7). That is, the user is authenticated based on whether or not the operation order of any of the first to fifth areas of the touch panel 20 matches the preset operation order.

  Next, when authenticated, the master microcomputer 100 displays a screen notifying that the authentication is successful, as shown in FIG. 11A, and then displays the main screen (for example, the CD playback screen shown in FIG. 7). ) Is displayed on the liquid crystal panel 19 (step S8). On the other hand, if the authentication is not successful, as shown in FIG. 11B, a screen notifying that the authentication has failed is displayed on the liquid crystal panel 19, and then the process proceeds to step S2, and the password is again entered. Prompt for input. As a result, when the DCP 15 is mounted on the apparatus main body 1, the car audio apparatus 10 displays the main screen only when the user is authenticated, and performs CD playback and radio reception processing according to the user's operation. On the other hand, if the authentication is not successful, the user's operation is not accepted except for the operation of inputting the authentication code, and the operation of CD reproduction or radio reception becomes impossible.

  As described above, in the car audio device 10, when the DCP 15 as the operation input unit is attached to the device main body 1, it is legitimate to know the password as authentication information by requesting user authentication. Only the user can operate it. As a result, if a legitimate user removes the DCP 15, unauthorized use by a third party can be avoided. Even if a thief obtains both the device main body 1 and the DCP 15, the password is It cannot be operated unless the code is known, and unauthorized use by a thief can be avoided. Therefore, it is not necessary for a legitimate user to carry the DCP 15 when leaving the vehicle. For example, the DCP 15 may be placed in a dashboard or trunk.

  In addition, the car audio device 10 does not authenticate the user with a generally known multi-digit number, but has an operation sequence in which operations in the first to fifth regions R1 to R5 of the touch panel 20 are set in advance. Since it is performed depending on whether or not they match, the thief or the like is confused as to how to input the authentication information (password) and gives up the input of the authentication information. In particular, in the present embodiment, information such as the touch panel 20 and the boundaries of the first to fifth regions R1 to R5 that are the operation unit is hidden, and such information is not displayed on the liquid crystal panel 19 either. As a result, the arrangement of the first to fifth regions R1 to R5 is set in an unclear state, which makes it more difficult for non-authorized users to input authentication information. As a result, the thief gives up the operation of the car audio device 10, and thereafter has a theft deterrent effect of avoiding the theft.

  In addition, embodiment mentioned above shows the one aspect | mode of this invention, This invention is not limited, It can change arbitrarily within the scope of the present invention. For example, in the above-described embodiment, a case where a resistive film type touch panel is used as the touch panel 20 has been described. However, other types of touch panels such as a capacitance method, an infrared method, and an ultrasonic method may be used. In the above-described embodiment, the case where the panel 20 is configured by a single touch panel has been described. However, the panel 20 is not necessarily configured by a single touch panel. For example, the first to fifth regions R1 to R5 may be configured by separate touch panels within a range that does not clearly indicate the boundaries between the first to fifth regions R1 to R5.

  Further, in the above-described embodiment, the user may be authenticated even when the power from the battery is not supplied, such as when the car audio device 10 is removed from the vehicle. In this case, a power source detection circuit (power source detection means) for detecting connection with an external power source such as a backup power source directly connected to the battery of the vehicle is provided, and the master microcomputer 100 replaces step S1 of the authentication start process. It may be determined whether or not power is supplied after power is no longer supplied from the external power supply by the power supply detection circuit, and the process of step S2 may be executed when the power is first turned on after the power is supplied. Thereby, when this car audio apparatus 10 is stolen and attached to another car, use by a thief can be prevented more reliably.

  Furthermore, in the above-described embodiment, the case where authentication is performed using the operation order of the touch panel 20 as authentication information has been described. However, authentication may be performed using biometric information such as a fingerprint or an iris as authentication information.

  Further, in the above-described embodiment, the case where the present invention is applied to a car audio device has been described. However, the present invention may be applied to other in-vehicle electronic devices such as car navigation and electronic devices other than in-vehicle devices. The present invention can be widely applied to authentication devices that perform authentication of a person.

It is a front view of the car audio apparatus which is an electronic device concerning this Embodiment. It is a front view of the apparatus main body of a car audio apparatus. It is a rear view of DCP of a car audio apparatus. It is a figure which shows the motion of DCP when DCP is attached to the apparatus main body. It is a block diagram which shows the functional structure of a car audio apparatus. It is a figure for demonstrating the touch panel of DCP. It is a figure which shows the example of a display of a liquid crystal panel. It is a figure which shows the correspondence of the operation mode of a touch panel, and the process performed. It is a flowchart which shows an authentication start process. It is a figure which shows an example of the display screen at the time of an authentication start process. It is a figure which shows an example of the display screen at the time of an authentication start process.

Explanation of symbols

1 device body 10 car audio device,
15 DCP,
17 Guide frame,
DESCRIPTION OF SYMBOLS 19 Liquid crystal panel 20 Touch panel 100 Master microcomputer 110 Radio receiving part 120 Reproducing part 130 Recording medium reading part 150 Display microcomputer

Claims (7)

In the authentication device that performs user authentication,
A touch panel for inputting a touch operation by the user ;
A guide frame having a constricted shape that surrounds the operation area of the touch panel and projects inward in the vicinity of a boundary between a plurality of adjacent areas obtained by dividing the operation area indistinguishable from the appearance;
The operation position of the touch panel operated by the user is specified in any of the plurality of areas , and the operation of the plurality of areas is determined according to whether or not the operation order matches a preset operation order. An authentication apparatus comprising authentication processing means for performing authentication. The authentication apparatus according to claim 1, wherein boundaries between the plurality of regions are provided so as to be indistinguishable. The authentication apparatus according to claim 1 or 2, wherein information indicating that the plurality of areas are operation units is not indicated or information other than the information is indicated. An operation position detecting means for detecting a touch operation position by the user of the touch panel, based on the touch operation position where the operation position detecting means detects the operation specifying means for specifying which one of the operation of the plurality of regions The authentication apparatus according to claim 2, further comprising: The touch panel is formed of a substantially transparent member ,
A display unit screen is arranged so as to be positioned on the rear side of the touch panel,
5. The authentication apparatus according to claim 4, further comprising display control means for displaying information other than information indicating the operation unit on the display means. In an electronic device having an authentication function for authenticating a user,
A touch panel for inputting a touch operation by the user ;
A guide frame having a constricted shape that surrounds the operation area of the touch panel and projects inward in the vicinity of a boundary between a plurality of adjacent areas obtained by dividing the operation area indistinguishable from the appearance;
The operation position of the touch panel operated by the user is specified in any of the plurality of areas , and the operation of the plurality of areas is determined according to whether or not the operation order matches a preset operation order. An authentication processing means for performing authentication;
An electronic apparatus comprising: a control unit that receives an operation of the operation input unit when authentication is obtained.   The electronic device according to claim 6, wherein the electronic device is a vehicle-mounted electronic device.

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