JP4317421B2 - In-vehicle electronic device and control method thereof - Google Patents

Description

The present invention relates to an in- vehicle electronic device and a control method thereof.

  For example, a car audio device is known as an in-vehicle device mounted on a vehicle such as an automobile. A car audio device is commonly called a car stereo, and the sound output from an AM or FM tuner, a cassette tape deck, a CD player, an autochanger, or the like is flown into the vehicle using an amplifier or an in-vehicle speaker. (For example, refer to Patent Document 1).

In recent years, audio data encoding formats have been diversified, and recording media for recording these audio data have been diversified, such as DVDs and MDs. Car audio equipment has been designed and developed in order to add functions to meet this diversification.
JP-A-11-203853

  However, with the increase in the number of functions of car audio devices, there are problems that the number of operation items required by the user increases and the operability deteriorates.

The present invention has been made in view of the above-described circumstances, and an object thereof is to provide a vehicle-mounted electronic device with good operability and a control method thereof.

In order to achieve the above object, the present invention relates to a vehicle-mounted electronic device having a touch panel, in which different operation processes are associated in advance with each area obtained by dividing the operable area of the touch panel into a plurality of areas, and the touch panel A guide frame that borders the operable region is provided, and a portion that protrudes into the operable region at the boundary of each region of the touch panel is provided on the guide frame so that each region can be identified. An operation discriminating means for discriminating, based on a signal output from the touch panel , a first operation mode for moving the pressed position within the first operation mode and a second operation mode for continuing the pressed state at the movement end point position of the first operation mode. If the first operation mode is discriminated by said operation discriminating unit performs the operation processing corresponding to the operation is performed region, the operation-format When the second operation mode is discriminated by means while the operation processing corresponding to the operation is performed region and the depressed state continues to be continued, characterized by including an operation executing means for repeatedly executing And
According to the present invention, in the above-described in-vehicle electronic device, the operation determination unit continues to be pressed at the movement end point position when the movement end point position of the first operation mode belongs to a region different from the movement start point position. In some cases, the operation is determined as the second operation mode for the region to which the movement start point position belongs.

The present invention relates to a control method for an in-vehicle electronic device provided with a touch panel, wherein different operation processes are associated in advance with each area obtained by dividing the operable area of the touch panel into a plurality of areas, and the operable area is related to the touch panel. A guide frame is provided, and the guide frame is provided with a portion projecting into the operable area at the boundary of each area of the touch panel so that each area can be identified, and the pressed position is within the range of any one of the areas. A first step of determining a first operation mode to be moved and a second operation mode in which the pressed state is continued at the movement end point position of the first operation mode based on a signal output from the touch panel, and the first step When the first operation mode is determined by the operation step, the operation process associated with the area in which the operation is performed is executed, and the second operation is performed by the first step. If the work mode is determined, while the operation processing corresponding to the operation is performed region and the depressed state continues to be continued, it is characterized by comprising a second step of repeatedly executing.

According to the present invention, after the operation of the first operation mode, when the operation of the second operation mode of continuing the pressed state on the surface of the touch panel is performed, Since the associated operation process is repeatedly performed, it is not necessary to perform the operation of the first operation mode a plurality of times, and an in- vehicle electronic device with good operability and a control method thereof are provided.

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

  FIG. 1 is a front view of a main body 1 of a car audio device as an electronic apparatus according to the present embodiment. 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 car audio apparatus body 1. A detachable control panel (hereinafter referred to as DCP (Detachable Control Panel)) 15 (see FIG. 2) that functions as an operation unit and a display unit with respect to the car audio device body 1 is detachable on the front surface of the car audio device body 1. Attached to.

  For details of the DCP 15 mounting structure, as shown in FIG. 3, two engagement protrusions 3a, 3b and one engagement receiver 4 are formed on the back surface of the DCP 15, and a connector contact 5 is formed. Further, as shown in FIG. 1, a support plate 9 for attaching the DCP 15 is provided on the front surface of the car audio device main body 1, and two engagement receivers 6a and 6b are provided on the support plate 9. And one engaging protrusion 7 and a connector contact 8 are formed. Under this configuration, after 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 car audio device main body 1 and one end side of the DCP 15 is engaged with the car audio device main body 1, By engaging the engagement protrusions 3a, 3b and the connector contact 5 on the back surface of the DCP 15 with the engagement receivers 6a, 6b and the connector contact 8 on the support plate 9 of the car audio device body 1, the DCP 15 is connected to the car audio. The structure is attached to the front surface of the apparatus main body 1.

  When the DCP 15 is attached to the car audio device body 1, in order to display a command signal by a button operation between the DCP 15 side and the car audio device body 1 through the connector contacts 5 and 8 and various information on the display unit. Signals etc. are sent and received.

  Further, when the DCP 15 is attached to the front surface of the car audio apparatus main body 1, the DCP 15 covers the insertion port 2 for a CD or the like. 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 such a state where the DCP 15 and the support plate 9 are tilted forward, a CD or a memory is inserted into the insertion openings 2a and 2b.

  As described above, the DCP 15 serving as the operation unit and the display unit is configured to be detachable from the car audio device main body 1. If the user removes the DCP 15 and takes it out when the user gets out of the car, the thief removes the car audio device main body 1 from the car audio device main body 1. Even if there is no objection, the car audio device main body 1 can be used and cannot be resold by seeing that there is no essential display part or operation part, 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. 2, the DCP 15 includes a DCP case 16, a guide frame 17 provided in front of the DCP case 16, and a liquid crystal panel fitted into the guide frame 17. 19 and a touch panel 20 provided on the liquid crystal panel 19. The liquid crystal panel 19 functions as a display unit, and the touch panel 20 also functions as an operation unit. 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 is a power key 21b for turning on the main power of the car audio apparatus body 1. The power key 21b is configured as a button-type rotary operator. When the power key 21b is pressed, the power is turned on / off, and the volume of the reproduced sound is adjusted by the rotary operation.

  The touch panel 20 includes first to fifth regions R1 to R5 obtained by dividing one substantially transparent touch panel 20 into five adjacent regions as indicated by broken lines in FIG. Each of the fifth regions R1 to R5 functions as one independent operation region.

  The guide frame 17 is shaped so as to protrude inward near the boundary of each region so that the user can identify each of the first to fifth regions R1 to R5. The user can visually recognize that the area is divided. Further, when the user operates the car audio device during driving of the vehicle, the user cannot pay attention to the touch panel 20 but must grasp the approximate position by groping and operate the touch panel 20. Even in such a case, in the present embodiment, the user 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 groping. Thus, an appropriate operation on the car audio device main body 1 can be performed without looking at the touch panel 20.

  FIG. 5 is a block diagram showing a functional configuration of the car audio apparatus main body 1 and the DCP 15. As shown in the figure, the car audio apparatus main body 1 includes a master microcomputer 100, a radio receiver 110, a reproducing unit 120, and a recording medium reading unit 130, when roughly classified. The master microcomputer 100 executes control of each part of the car audio apparatus main body 1 and the DCP 15, and has a built-in storage medium such as a ROM or a RAM, in which a control program or the like is stored. ing. Although not shown, the master microcomputer 100 is supplied with a backup power source directly connected to the vehicle battery and an ACC power source connected to the battery via a key switch.

  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 output signal 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 car audio device body 1. 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, an external surround decoder 161 of an external sound device 160 is connected to the electronic volume circuit 121 via an RCA connector made of, for example, a two-wire coaxial cable, and the external volume decoder 161 is connected to the electronic volume circuit 121. In this case, the signal is output to the external surround decoder 161 together with the signal output to the mute circuit 122.

  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 circuit 121 via a digital optical cable or the like, and can receive a digital signal from the electronic volume circuit 121. A surround signal such as a Dolby digital signal is added to the digital signal. If included, the analog signal is output to the external amplifier unit 162 after decoding the signal.

  When the external sound device 160 is connected to the car audio device main body 1, in addition to the connection between the electronic volume circuit 121 and the external surround decoder 161, a bus connection between the external surround decoder 161 and the master microcomputer 100 is also made. . 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 car audio device body 1, the identification ID of the device, the type of the device, the external amplifier unit, etc. are transmitted from the external surround decoder 161 to the master microcomputer 100 via the bus connection. Information such as presence / absence 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. The signal output from the amplifier 123 inside the car audio device body 1 is cut off by controlling.

  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.

  More specifically, when the external amplifier unit 162 is connected, driving the amplifier 123 inside the car audio device body 1 is wasteful in terms of power efficiency, and reproduced sound is output from the speaker SP connected to the amplifier 123. When output, the surround effect (sound image) created by the reproduced sound from the external speaker SP ′ is destroyed, and the sound quality of the sound may be deteriorated. However, the inventor has found that depending on the type of the external amplifier unit 162 or the external surround decoder 161, there is a device that can output a good sound as a reproduced sound when the amplifier 123 in the car audio device body 1 is driven. Have gained.

  Therefore, in this embodiment, when the external sound device 160 is connected, the master microcomputer 100 stops the drive of the amplifier 123 when the external sound device 160 cuts off the power supply to the amplifier 123. It is discriminated from the type or the identification ID whether or not the output sound is good. The correspondence relationship between the type or identification ID of the external sound device 160 and whether the power supply to the amplifier 123 is stopped or muted is built in the master microcomputer 100 as table data in advance as shown in FIG. Stored in the read ROM. Then, the master microcomputer 100 instructs the mute circuit 122 to either cut off the power supply to the amplifier 123 or cut off the signal output from the amplifier 123 based on the previous determination result. give.

  With this configuration, when the external sound device 160 is connected, control of power supply to the amplifier 123 in the car audio device body 1 according to the external surround decoder 161 or the external amplifier unit 162 included in the external sound device 160, Alternatively, the mute control is executed, and it is possible to improve the power efficiency while maintaining the quality of the reproduced sound output from the external sound device 160. Even when the external sound device 160 is connected, the user uses the DCP 15 to use the built-in amplifier 123 or the external amplifier unit 162 in order to respond to the user's sound preference. The master microcomputer 100 may be configured to control the mute circuit 122 based on this specification.

  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 executes CD disk rotation speed control, tracking control, and the like by a pulse signal synchronized with rotation of a disk rotation motor (not shown) and signal feedback control from an optical pickup (not shown).

  As described above, the DCP 15 includes the liquid crystal panel 19, the touch panel 20, and the operation keys 21, and further includes a display microcomputer 152 that controls each part of the DCP 15, and various types of liquid crystal panel 19 based on instructions from the display microcomputer 152. And an LCD driver 151 for displaying information. When the DCP 15 is mounted on the car audio device body 1, the display microcomputer 152 of the DCP 15 and the master microcomputer 100 of the car audio device body 1 are electrically connected by the connector contacts 5 and 8 to exchange various signals. Do. For example, when the power 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 an encoder (not shown) and displayed on the display 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 power key 21b.

  Next, the touch panel 20 included in the DCP 15 will be described in more detail. FIG. 7 is a diagram schematically showing the configuration of the touch panel 20. The touch panel 20 has a rectangular shape having a larger area than the display area of the liquid crystal panel 19, and a resistive film type touch panel is used for the touch panel 20. The touch panel 20 has high transparency (light transmittance), and the display of the liquid crystal panel 19 disposed on the lower surface is visible through the touch panel 20. In addition, when the surface of the resistive touch panel is touched with a hand or the like, a voltage signal corresponding to the position coordinate of the contact point is output, and the display microcomputer 152 determines the contact point coordinate based on the signal. Identified.

In the present embodiment, 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 the user (driver) presses 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 detected as the car audio device. The data is output to the master microcomputer 100 of the main body 1. Then, based on the output from the display microcomputer 152, the master microcomputer 100 determines whether the place operated by the user is one of the first to fifth areas. 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. The settings (coordinate values) of the first to fifth regions R1 to R5 are stored in advance in the ROM of the master microcomputer 100.

  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 of the apparatus can be improved by enlarging each operation element in this way. It becomes. In particular, in-vehicle devices such as car audio devices are often operated by a user who is driving, thus increasing the size of each operator so that each operation can be performed even during driving. It is possible to easily identify the location of the child and prevent the operation from being hindered during the operation of the in-vehicle device.

  Next, an example of the operation of the touch panel 20 will be described. FIG. 8 is a diagram illustrating 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, along with the diagram schematically showing the CD at the location belonging to the first region R1, if currently playing, the CD track being played and its track The playback time of is displayed. In the portion belonging to the second area R2, the title of the music being played back is displayed when it is being played back. In the third area R3, the artist name of the music being played is displayed, and when playing any one of a plurality of CDs stored in a CD changer (not shown), the currently selected or playing CD Is displayed to identify the number of CDs. In the fourth area R4, “MODE” indicating that the fourth area R4 is a call operation area for calling various setting modes such as a volume adjustment screen and a setting screen for the speaker SP is displayed. In the fifth area R5, “DISC UP” indicating that the fifth area R5 is a CD switching operation area is displayed.

  When the display on the liquid crystal panel 19 is displayed, if the user (driver) presses a location where “DISC UP” is displayed, the pressed point coordinates at this time are output from the display microcomputer 152 to the master microcomputer 100. The 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 user (driver) operates the touch panel 20 by groping while driving, the user 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 each boundary 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. 7, 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, and area setting values of these dead zones Za to Zd are stored in the ROM. 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 (driver), the coordinates of the pressing point (when there are a plurality of pressing points simultaneously from the display microcomputer 152 to the master microcomputer 100, Centroid coordinates) are output. 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 set to the dead zone. If it belongs to 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. .

  As described above, the configuration in which the dead zone Z is set in the vicinity of each boundary of the first to fifth regions R1 to R5 prevents an unintentional operation from being performed because the user pressed near the boundary. Is done.

  By the way, in this embodiment, when any one of the first to fifth regions R1 to R5 is operated, the car audio device main body 1 is further changed depending on the operation mode in that case. The processing to be executed is configured differently. As the 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. The short press operation is an operation for quickly pressing the touch panel 20 once, and the long press 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-time pressing operation refers to an operation in which the user touches the touch panel 20 in the right direction and then continues to press the tracing end point for a long time without releasing his hand. It is an operation that keeps tracing over 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. 9 described above exemplifies processing executed when the first region R1 is operated as an operation during CD playback, in addition to the above-described operation mode. As shown in FIG. 9, when a short time pressing operation is performed on the first region R1, a sound source switching operation is performed. For example, every time a 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 21 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.

  The master microcomputer 100 determines which of the six operation modes has been performed. FIG. 10 is a flowchart showing the procedure of the operation determination process executed by the master microcomputer 100. The operation determination process is started by a timer interrupt that occurs at regular time intervals.

  As shown in FIG. 10, in the operation determination process, the master microcomputer 100 first determines whether the touch panel 20 has been pressed based on the output from the display microcomputer 152 (step S101). (Step S101: NO), in order to show that there is no operation of the touch panel 20, a process is complete | finished. On the other hand, when the touch panel 20 is pressed (step S101: YES), the master microcomputer 100 operates any one of the first to fifth regions R1 to R5 based on the pressed point coordinates from the display microcomputer 152. (Step S102). At this time, the master microcomputer 100 also performs a process of storing the coordinates of the pressed point at the beginning of pressing in a RAM (not shown) incorporated therein.

  Next, the master microcomputer 100 executes the following process to determine whether this operation is a slide operation or a long-time pressing operation. That is, the master microcomputer 100 resets and activates a built-in timer counter circuit (not shown) in order to determine the length of the operation time, and starts time counting for a predetermined time (step S103).

  Next, the master microcomputer 100 determines whether or not the hand has been released based on the output from the display microcomputer 152 (step S104). Specifically, an affirmative determination is made if the output of the pressed point coordinates from the display microcomputer 152 is continued during the execution of step S104, and a negative determination is made otherwise. If it is determined that the hand has been released as a result of this determination (step S104: NO), the current operation mode is specified as a short-pressing operation (step S105), and the process is terminated.

  On the other hand, if the hand has not yet been released (step S104: YES), the master microcomputer 100 determines the coordinate value of the pressed point currently output from the display microcomputer 152 in order to determine whether or not it is a slide operation. In step S102, a pressing point difference value in the X-axis direction (= current pressing point coordinate value−initial pressing point coordinate value) with the initial pressing point coordinate value stored in the RAM in step S102 is calculated and stored in the RAM. It is stored (step S106), and it is determined whether the pressed point difference value is equal to or greater than a predetermined threshold value (step S107). This predetermined threshold value is a threshold value for determining whether or not the operation is a slide operation. Taking account of camera shake during driving, for example, a slide movement that does not reach 5 mm (X direction) is performed. The value is set in advance so that it is not considered.

  If the determination result in step S107 is NO, that is, if there is no movement of the pressed point coordinates that can be regarded as a slide operation, the master microcomputer 100 determines whether or not the timer counter circuit has timed out (step If time-out has occurred (step S108: YES), the current operation mode is specified as a long-time pressing operation (step S109), and the process ends. On the other hand, if it has not timed out yet (step S108: NO), the processing procedure is returned to step S104.

  If an affirmative determination is made in the previous step S107 (step S107: YES), although the slide operation is confirmed, whether the operation is only the slide operation or is accompanied by a long-time pressing operation. In order to discriminate, after starting and resetting the timer counter circuit, a time count for a predetermined time is started (step S110). Next, the master microcomputer 100 determines whether the hand has been released based on the output from the display microcomputer 152 (step S111). If the hand has already been released (step S111: YES), the master microcomputer 100 determines whether or not the pressing point difference value stored in the RAM in step S106 is a positive value (step S112). If the pressed point difference value is a positive value (step S112: YES), it indicates that the pressing point difference value has moved in the positive direction of the X axis, so that the current operation mode is identified as a right slide operation (step S113), and the process is terminated. . On the other hand, if the pressed point difference value is a negative value (step S112: NO), the current operation mode is specified as the left slide operation (step S114), and the process ends.

  On the other hand, if the hand has not yet been released (step S111: NO), it is determined whether or not the timer counter circuit has timed out (step S115), and if it has timed out (step S115), the processing procedure is performed. If it is returned and timed out (step S115: YES), it is determined whether or not the pressing point difference value is a positive value in the same manner as in step S112 in order to indicate that it is a sliding operation + long-time pressing operation. (Step S116), the slide direction is specified. That is, if the pressing point difference value is a positive value (step S116: YES), the current operation mode is specified as a right slide operation + long-time pressing operation (step S117), and the pressing point difference value is negative. If it is a value (step S116: NO), the current operation mode is specified as a left slide operation + long-time pressing operation (step S118), and the process is terminated.

  As described above, in the present embodiment, the touch panel 20 is divided into a plurality of areas of the first to fifth areas R1 to R5, and further, operation is performed in one area by setting a plurality of types in the operation mode of each area. As a result, it is possible to increase the types of operations that can be performed, and as a result, even if the types of operations to be operated increase, the number of area divisions of the touch panel 20 does not increase and one area does not need to be narrowed.

  Further, in the present embodiment, as described in the sequential track up (down) of the CD track, when a slide operation + a long press operation is performed, it is considered that the slide operation is repeated, The operation during the slide operation is repeatedly executed. FIG. 11 is a flowchart showing the processing procedure of the repetitive processing executed by the master microcomputer 100 when a slide operation + pressing operation for a long time is performed. This repetitive processing is read out from the built-in ROM and executed when the operation mode is specified as right (left) slide operation + long-time pressing operation in the operation determination processing (see FIG. 10). Is.

  As shown in FIG. 11, first, the master microcomputer 100 determines whether or not the operation is a repetitive operation in which the operation at the time of the slide operation is repeated when a slide operation + a long-time pressing operation is performed (step S201). More specifically, even when a slide operation and a long press operation are performed, for example, when a radio is selected as a sound source, a radio broadcast with strong radio waves is performed by the slide operation + long press operation. When there is an instruction to automatically select (so-called LOCAL-SEEK), the operation of searching for a predetermined frequency band is performed only once, and there is no operation to be repeated. Whether or not there is an operation to be repeated when a slide operation + a long-press operation is performed is determined based on the current display on the liquid crystal panel 19 and which of the first to fifth regions R1 to R5 is operated. It is determined based on whether or not.

  Even if the slide operation + pressing operation is performed for a long time, if the repeated operation should not be performed accordingly (step S201: NO), the master microcomputer 100 performs the slide operation as in the LOCAL-SEEK operation. + An operation associated with the long-time pressing operation in advance is executed once (step S202), and the process is terminated.

  On the other hand, when the repetitive operation is performed (step S201: YES), the master microcomputer 100 performs the operation associated with the slide operation (for example, the CD track up / down operation) once (step S203). Then, the timer counter circuit is activated to start timer counting for a predetermined time (for example, 180 ms) (step S204). The timer count here is for determining whether or not the repetitive operation is to be performed, and before the timer count circuit times out (step S206: NO), a long-time pressing operation is performed because the hand is released. If it has been completed (step S205: YES), the process is terminated without performing the operation associated with the slide operation again. On the other hand, when the timer count circuit times out (step S206: YES), if the hand has not been released and the pressing operation has been continued for a long time (step S205: NO), the master microcomputer 100 The processing procedure is returned to step S203, and the operation associated with the slide operation is performed again to execute the repeated operation.

  As described above, in the present embodiment, the touch panel 20 is pressed when a slide operation + long-time pressing operation is performed such that the user (driver) continues to press the touch panel 20 after the sliding operation. In the meantime, the operation associated with the slide operation is repeatedly executed, which makes it possible to simplify the operation procedure to be performed by the user (driver), and as a result, for the user, particularly the driving user. This improves the operability provided and prevents the operation from being hindered by the operation.

  By the way, when a driving user operates the touch panel 20, the touch panel 20 cannot be watched. Therefore, when a slide operation is performed by groping, as shown in FIG. Of R1 to R5, a hand (finger) may be slid across a plurality of regions.

  When such an operation is performed, it is considered that the slide operation has been performed on the area including the start point of the slide operation, and after the operation of the car audio device body 1 corresponding to the operation is performed, the slide operation is ended. It is considered that the slide operation has been continuously performed on the region including the point, and an operation corresponding to this operation may be executed against the user's intention.

  Therefore, in the present embodiment, when a slide operation is performed on the touch panel 20, even if the end position of the slide operation belongs to an area different from the area including the start position, Regardless of whether it belongs to the area, it is assumed that the slide operation is performed in the area including the start position.

  Specifically, as shown in FIG. 10, in the operation determination process, after determining the region to which the pressed point belongs at the start of the operation in step S102, it is not determined which region the current pressed point belongs to. Further, only the length of the pressing time, the presence / absence of the slide, and the slide direction are determined. In other words, the pressed point coordinates (end point position) after the slide operation are simply used to specify the slide direction, and do not switch the operation according to the region to which the pressed point coordinates belong.

  As described above, in the present embodiment, when the slide operation of the touch panel 20 is performed, if there is a slide from the region including the portion pressed at the start of the operation to the other region, the region where the slide operation is performed is Since it is configured to consider only the region including the place pressed at the start of the operation, when the driving user or the like slides the touch panel 20 by mistake, the first to fifth items are erroneously set. Even if the hand (finger) is slid over a plurality of regions among the regions R1 to R5, an operation contrary to the user's intention is prevented.

  By the way, on the liquid crystal panel 19 of the DCP 15, during playback of a sound source such as CD or radio, a playback main screen is displayed. FIG. 13 is a diagram illustrating a display example of the liquid crystal panel 19 when radio is selected as the sound source.

  FIG. 13A shows an example of a reproduction main screen. In the portion corresponding to the fourth area R4 on the reproduction main screen, another mode is selected and displayed from the reproduction mode of the sound source. “SUB MODE” is displayed to indicate the operation area. When the sound source is a radio and the fourth region R4 is pressed for a short time, the master microcomputer 100 determines the operation mode by the processing shown in FIG. And a sub-mode selection screen showing a list of sub-modes is displayed on the liquid crystal panel 19 as shown in FIG. In this sub-mode selection screen, a display corresponding to the fourth area R4 displays “RTN” indicating that it is an operation area for returning to the reproduction main screen. Here, the sub-mode is a mode for performing various settings for sound source playback, and a plurality of sub-modes are provided according to the setting type. An example of the sub mode is a preset scan mode (P-SCAN).

  When the preset scan mode is selected, the master microcomputer 100 gives an instruction to the display microcomputer 152 to return the display screen on the liquid crystal panel 19 to the reproduction main screen as shown in FIG. Then, the radio reception unit 110 is controlled to start an operation of sequentially receiving radio waves from a broadcasting station registered in advance in a ROM or the like at predetermined intervals (about 10 seconds or the like).

  During execution of the preset scan mode, the display of the portion corresponding to the fourth region R4 on the playback main screen indicates the preset scan mode to indicate the currently executed submode, unlike in the playback mode. “P-SCAN” is displayed, which allows the user to easily understand whether the currently executed mode is the playback mode, sub-mode, or which sub-mode. It is possible to do.

  Furthermore, in the present embodiment, when the sub-mode is being executed and the fourth region R4 is operated while the sub-mode type is displayed at the location corresponding to the fourth region R4. In addition, the execution of the sub-mode is stopped and the playback mode is restored. Specifically, when the master microcomputer 100 detects such an operation by the operation determination process shown in FIG. 10 and is currently executing the sub mode, the master microcomputer 100 cancels the execution, A control process such as returning to the reproduction mode for performing the reproduction is executed.

  By this control process, for example, when the preset scan mode is executed and radio waves from a predetermined broadcasting station are intermittently received sequentially, the user can display the first on the reproduction main screen shown in FIG. When the four area R4 is operated, the preset scan mode is canceled, the reproduction mode is restored, and the radio that is the currently selected sound source is received and reproduced.

  In this way, while displaying the playback main screen of the playback mode which is the main mode while executing the operation of the sub mode, the type (identification information) of the currently executing sub mode is displayed, By making it possible to accept an operation for canceling the execution of the sub-mode from this playback main screen, the user can grasp the type of the sub-mode currently being executed and cancel the sub-mode. It is possible to easily perform the operation for making it happen.

  As described above, the car audio device main body 1 and the DCP 15 according to the present embodiment have the following effects.

  According to the present embodiment, when the touch panel 20 is divided into a plurality of areas such as the first to fifth areas R1 to R5, each of the areas is divided so as to be in contact with at least one other area. For this reason, in the entire region of the limited touch panel 20, the area of each region can be maximized.

  In addition, according to the present embodiment, since the dead zone Z is set near each boundary of the first to fifth regions R1 to R5, an unintended operation is executed because the user presses the vicinity of the boundary. It is prevented from being done.

  Moreover, according to this Embodiment, it can operate in one area | region by dividing the touch panel 20 into the some area | region of 1st-5th area | region R1-R5, and also setting multiple types in the operation mode of each area | region. It is possible to increase the types of operations, and as a result, even if the types of operations to be operated increase, the number of area divisions of the touch panel 20 does not increase and one area does not need to be narrowed.

  Furthermore, according to the present embodiment, when a slide operation + a long press operation is performed, the operation associated with the slide operation is repeatedly executed while the touch panel 20 is pressed. Even if the user does not perform the slide operation a plurality of times, the user can cause the operation associated with the slide operation to be performed a plurality of times only by continuing the pressing operation, thereby improving the operability.

  In addition, according to the present embodiment, when the external sound device 160 is connected to the car audio device main body 1, the car audio is determined according to the external surround decoder 161 or the external amplifier unit 162 included in the external sound device 160. Since power supply control or mute control of the amplifier 123 in the apparatus main body 1 is executed, the power efficiency is improved while maintaining the sound quality of the reproduced sound output from the external sound device 160 in good quality. It becomes possible.

  In addition, according to the present embodiment, while the car audio device body 1 is executing the sub-mode operation, when the playback main screen in the playback mode that is the main mode is displayed on the DCP 15, it is currently executed. In addition to displaying the type (identification information) of the current submode and allowing the operation for canceling the execution of the submode to be accepted from the main reproduction screen, the user can select the type of the submode currently being executed. It becomes possible to grasp and to easily perform an operation for canceling the sub-mode.

  The above-described embodiments merely show one aspect of the present invention, and can be arbitrarily modified within the scope of the present invention.

  For example, in the above-described embodiment, the car audio device that is a vehicle-mounted device is illustrated as an example of the electronic device. However, the present invention is not limited to the vehicle-mounted device, and may be any electronic device that uses a touch panel as an operation unit. It is possible to apply. Needless to say, the present invention may be applied to, for example, a car navigation device as another in-vehicle device.

It is a front view of the main body of the car audio apparatus which is an electronic device concerning this Embodiment. It is a front view of DCP. It is a rear view of DCP. It is a figure for demonstrating tilting of DCP. It is a block diagram which shows the functional structure of a car audio apparatus main body and DCP. It is a figure which shows typically the table data which show the correspondence of the kind or identification ID of an external sound apparatus, and the propriety of the amplifier drive inside a car audio apparatus main body. It is a figure which shows the structure of a touch panel typically. It is a figure which shows the example of a display of a liquid crystal panel. It is a figure which shows an example of the correspondence of the operation mode at the time of operating a touch panel, and the operation | movement performed as a result of the operation. It is a flowchart of an operation determination process. It is a flowchart of a repetition process. It is a figure for demonstrating the aspect of a slide operation. It is a figure which shows the screen at the time of main mode, and the screen at the time of sub mode execution with the transition of a screen.

Explanation of symbols

1 Car audio system body 15 DCP
DESCRIPTION OF SYMBOLS 19 Liquid crystal panel 20 Touch panel 100 Master microcomputer 121 Electronic volume circuit 122 Mute circuit 123 Amplifier 152 Display microcomputer 160 External sound apparatus 161 External surround decoder 162 External amplifier unit R1-R5 1st-5th area Z Dead zone

Claims (3)

In in-vehicle electronic devices equipped with touch panels,
Different operation processes are associated in advance with each area obtained by dividing the operable area of the touch panel into a plurality of areas, a guide frame that borders the operable area is provided on the touch panel, and each area of the touch panel is provided on the guide frame. Each region can be identified by providing a protruding portion in the operable region at the boundary,
Based on the signal output from the touch panel , the first operation mode for moving the pressed position within the range of any one of the regions and the second operation mode for continuing the pressed state at the movement end point position of the first operation mode. Operation determining means for determining
When the first operation mode is determined by the operation determination unit, an operation process associated with the area where the operation is performed is executed, and when the second operation mode is determined by the operation determination unit, the operation is An in- vehicle electronic device comprising: an operation execution unit that repeatedly executes an operation process associated with a made area while the pressed state continues. The operation determining means includes
When the movement end point position of the first operation mode belongs to an area different from the movement start point position, if the pressed state is continued at the movement end point position, the second operation for the area to which the movement start point position belongs is performed. Distinguish from aspect
The vehicle-mounted electronic device according to claim 1. In a control method of an in-vehicle electronic device provided with a touch panel,
Different operation processes are associated in advance with each area obtained by dividing the operable area of the touch panel into a plurality of areas, a guide frame that borders the operable area is provided on the touch panel, and each area of the touch panel is provided on the guide frame. Each region can be identified by providing a protruding portion in the operable region at the boundary,
Based on the signal output from the touch panel , the first operation mode for moving the pressed position within the range of any one of the regions and the second operation mode for continuing the pressed state at the movement end point position of the first operation mode. A first step of determining
When the first operation mode is determined in the first step, an operation process associated with the area in which the operation is performed is executed, and when the second operation mode is determined in the first step, the operation is performed. while the operation processing corresponding to the made the area the depressed state continues to be continued, the control method characterized by comprising a second step of repeatedly executing.

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