JPH0750652Y2 - Map meter - Google Patents

Description

[Detailed description of the device]

TECHNICAL FIELD OF THE INVENTION The present invention relates to a map meter. [Prior art and its problems] The conventional map meter inputs the scale of the map to be used,
The length between two points on the map is measured, and the length of the measured result is calculated and corrected to an actual distance by a scale and displayed. However, in order to obtain distance data between a plurality of consecutive points in such a map meter, it is necessary to clear the distance data every time the distance data between each point is obtained and perform measurement from the beginning. Therefore, there is a drawback that the distance data between the points must be recorded on paper or the like. In addition, conventional map meters convert distance data according to a single distance unit (for example, Km unit) and display it.
In order to use another distance unit (for example, miles, feet, etc.), it is necessary to perform conversion for that purpose separately, which is troublesome in conversion and has a problem of poor practicality. [Object of the Invention] The present invention has been made in view of the above circumstances, and can easily obtain a plurality of measured distance data and can display the converted distance data in accordance with various distance units. The purpose is to provide a map meter. [Summary of the Invention] In order to achieve the above object, the present invention is provided with a memory capable of storing a plurality of measured distance data, and not only can be displayed after the measurement but also a required distance can be selected from a plurality of distance unit data. The gist is that the unit data is selected and the distance data is converted according to the selected distance unit data. [Embodiment] The present invention will be specifically described below based on an embodiment shown in the drawings. In this embodiment, the present invention is applied to a multifunctional electronic wrist watch. Configuration FIG. 1 shows the appearance of the present embodiment. A liquid crystal display panel 2 for displaying time, distance, etc. is arranged on the front surface 1a of the watch case 1, and the watch case 1 is provided on the left side surface. Front of 1a
A part of the measuring wheel 3 which is rotatably supported in a plane parallel to is protruding. Further, switches S ₁ , S ₂ , S ₃ , S ₄ used in various processes described later are provided on the other side surface. FIG. 2 is a view showing the arrangement of display bodies in the liquid crystal display panel 2. That is, the first display section 2a is provided with dot display bodies for three digits and the seven-segment display body for four digits, and the second display section 2b is provided with display bodies for displaying various units of speed. In the third display portion 2c, a 7-digit 7-segment display body for displaying scale data or date is arranged. Further, the fourth display section 2d displays a scale display body 2e composed of the characters "SCALE" displayed when the scale data is displayed on the third display section 2c, and the time and the like when displayed. A time display 2f consisting of the letters "TIME" is displayed. The 5th display unit 2g has a 7-segment 7-segment display for displaying the time or measured distance, and a display for showing units of various lengths (for example,
7-segment display body of FIG. 5 display body 2g) "in" character display body indicating inches, "mm" character display body indicating millimeters, "ft" character display body indicating feet, etc. The length displayed by is the display that consists of the letters "LENGTH" and "DIST" that are lit when the length is actually measured from the measured object or measured on the map, and the measuring wheel 3 A measurement state mark display body 2h and the like, which are displayed in a blinking manner in a state in which the length can be measured by using, is provided. FIG. 3 is a diagram showing a circuit configuration of this embodiment. In the figure, the ROM 11 is a fixed memory that contains programs and data for controlling the entire system. ROM
The address control unit 12 is the address unit of the ROM 11,
The next address data output N _A that defines the flow of the program from the OM 11, the output from the arithmetic circuit 15, and the output from the frequency divider circuit 20 described later are input. RAM13
The address data output S _U of ROM 11, and outputs the S _L and F _U, F _L data of the designated address, each process in the data calculation circuit 15 of the stores by entering the result of the processing It is a memory. Instruction decoder 14 is ROM11
Is a block that decodes the output Ins of and outputs a control signal to each block. The arithmetic circuit 15 performs arithmetic and logical operations with S and F as inputs, and the output is the output F of the ROM 11.
_U, is written to the specified RAM13 of the address in the F _L. Latch 16
Temporarily stores the contents of the address of the RAM 13 designated by the outputs S _U and S _L of the ROM 11 and sends it to the input S of the arithmetic circuit 15 in synchronization with the input F of the arithmetic circuit 15. The oscillator 17 outputs a clock signal of a constant cycle, divides the clock signal of the timing generator 18 to a predetermined frequency, and outputs a timing signal for controlling each block in time sequence. The key input unit 19 is a block including the above-described switches S _{1 to} S ₄ and sending a signal for instructing the system to perform each processing operation. The frequency divider circuit 20 is a counter that divides the output from the oscillator 17, generates a clock signal of a constant cycle, and the clock data of the RAM 13 is updated each time. The display unit 21 is a circuit block that displays processed data, that is, time, distance, and the like. The LED driver 22 is a circuit that operates by a signal from the arithmetic circuit 15 to turn on the LED 23. The light from the LED 23 passes through many slits 3a provided in the vicinity of the outer circumference of the measuring wheel 3. It is incident on the photo sensor 24 via the light. When the wheel 3 is rotating, the light incident on the photo sensor 24 is interrupted by the slit 3a,
The output of the photo sensor 24 also exhibits an intermittent waveform. The waveform shaping circuit 25 is a circuit that shapes the output waveform from the photosensor 24 and sends it as a signal S _A described later. The bus control gates A1, A2, B1, B2, C1 to C5, D1, D2 are gates for controlling each bus line based on the output of the instruction decoder 14 or the like. FIG. 4 shows the structure of the RAM 13 described above. The display register DR is a register in which the data displayed on the liquid crystal display panel 2 is set, and the clock register T is a register in which the momentary current time is set. The mode register M is a quaternary counter and when the value is 0, the liquid crystal display panel 2
To specify the time display mode for displaying the current time, and when it is 1, specify the major mode for measuring the length of the measured object by rolling the wheel 3 along the measured object. When is 3, the map meter mode for measuring the length of the actual route corresponding to a specific route on the map using the wheel 3 is specified, and when 3, the length measured in the map meter mode is specified. From the distance (distance) and the input required time or speed, the navigation mode at the time of calculating and displaying the speed or required time is specified. The memory pointer B is a pointer for designating an address of each memory in one of the scale data storage units SR described later, and the state register C indicates various states in the map meter mode, for example, a normal state or a scale data input state. It is a register. The memory pointer D is a pointer for designating each memory of the route data storage unit RM described later, and the state register F is a register for designating various states in the navigation mode. The measurement register N is a register in which the actual length corresponding to the scale data is stored with respect to the measured length on the map. The scale data storage unit SR includes memories E _{0 to} E ₉ , and each memory has a scale area M _Y in which a scale is stored and the unit data relating to a unit used when measuring a length using the scale. , 0 is inch (in), 1 is millimeter (mm), and 7 is unit area M _X in which nanometer (nm) is stored. The unit and total scale data). It should be noted that the memories E _{0 to} E ₉ are stored in the ROM 11 when the power supply to this embodiment is turned on.
10 types of representative scale data are transferred and stored. The route data storage unit RM is composed of memories M _{0 to} M ₉ , and each memory stores a distance storage area LA in which the actual length of the measured route is stored and a unit member of the unit used for the measurement. Unit storage area UA and the time storage area that stores the input or calculated required time
It consists of TA and a speed storage area VA in which the input or calculated speed is stored. Operation Next, the operation of this embodiment configured as described above will be described. FIG. 5 is a general flow chart showing an outline of the operation of this embodiment. That is, it stands by until there is a clock signal or a key input signal (step S1), and when there is a clock signal, a clock process for increasing the time of the clock register T that stores the current time by a fixed time is executed. (Step S2), on the other hand, when there is a key input signal,
The corresponding predetermined key processing is executed (step S
Four). After the timekeeping process or the key process is finished, a display process for displaying the instructed data on the liquid crystal display panel 2 is performed (step S3), and then the process returns to the standby state (step S1) again. 6 and 7 show the key processing (step S in FIG. 5).
4 is a flowchart of 4), showing in detail the key processing in the map meter mode (register M = 2) and the navigation mode (M = 3) except for the processing of the switch S ₁ . Therefore, the time display mode (M = 0) and the major mode (M
= 1) is omitted. Also, 8th to 10th, 12th and 14th
The figure shows the transition of the display of the liquid crystal display panel 2 based on the operation of various keys, and FIGS. 11 and 13 show the route data storage section R.
It shows the storage state of the memory of M. The operation of this embodiment will be described below with reference to the drawings. (A) Operation in time display mode and major mode For example, when 0 is set in the mode register M and the time display mode is designated, the liquid crystal display panel 2 is
It is assumed that a display indicating that the current date and time is 10:58:30 on December 27, 1987 (Wednesday) as shown in FIG. Here, in order to set the major mode for measuring the actual length of the object to be measured using this embodiment, the switch S ₁ is operated as shown in FIG. In this case, the process proceeds to the key process of FIG. 5 (step S4), that is, the flowchart of FIG. 6, the operation of the switch S ₁ is detected in step S10, and the increment process for incrementing the mode register M by 1 is executed and the value Is set to 1 and the major mode is set (step
S11). Next, in step S12, "MSR" indicating that the first display unit 1a of the liquid crystal display panel 2 is in the major mode is displayed.
Perform processing to change to the display in the major mode, such as instructing the display of the character. Then, by operating the switch S _2, S _3, S ₄ performs various settings, but if so, in each case, corresponding processing is executed proceeds from step S1 in FIG. 5 as a key process in step S4. When the measurement is started using the wheel 3, the signal S _A is input along with the rotation of the wheel 3, and the processing in the major mode based on the signal S _A is executed (step S4). It is displayed on the liquid crystal display panel 2 in the next step S3. (B) Operation in map meter mode To use the present embodiment as a map meter in the map meter mode, the switch S ₁ is operated in the major mode shown in FIG. 8 (b). At this time, the operation is detected in step S10, the value of the mode register M is set to 2, and the map meter mode is set (step S11). Then, the display content changing process, that is, the scale data storage unit SR of the RAM 13 designated by the memory pointer B at that time
Medium memory (ie one of memories E _{0 to} E ₉ )
It is instructed to display the reduced scale data stored in the liquid crystal display panel 2 (step S12), and it is displayed in step S3 (see FIG. 8C). FIG. 9 shows the transition of the display of the liquid crystal display panel 2 in the normal state and the reduced scale data input state in the map meter mode. For example, now, the status register C is set to 0 and is in the normal state, and the memory pointer B
Specifies the memory M ₀ , and the scale of 250000 and the unit of kilometers stored in the memory are 9th.
It is assumed that they are displayed on the third display portion 2c and the fifth display portion 2g, respectively, as shown in FIG. Here, in order to select other scale data stored in another memory according to the map used this time, switch S until the desired scale data is displayed while observing the display on the liquid crystal display panel 2. Operate ₂ (see Fig. 9 (A) to (D)). The operation of the switch S ₂ at this time is detected in step S15 in FIG. 6, and it is determined that the map meter mode is in effect (step S16), and it is further determined that the normal state (C = 0) is in effect ( Step S17), +1 for memory pointer B
By executing the incrementing process of the memory E ₁ when the switch S ₂ is operated when going performing scale selection process (that is, specifies the memory E ₀ which sequentially specifies the next memory, the memory E When the switch S ₂ is operated while ₁ is specified, the specification is advanced to the memory E ₂ , etc.). Then, in step S3 of FIG. 5, the selected reduced data and the like are displayed on the liquid crystal display panel 2. In addition,
On the right side of the first display portion 2a in FIGS.

[0], [1], ...

[9] indicates the memory number of each memory of the scale data storage unit SR in which the displayed scale data is stored. Further, for example, when the scale data relating to the map used this time is not stored in any of the memories of the scale data storage unit SR, the scale data used by the operator is used this time in the memory storing the scale data which is unlikely to be used. Set and store map scale data. In this case, first, in the normal state, the switch S ₂ is operated to specify a memory in which scale data which is unlikely to be used is stored, the scale data is displayed on the liquid crystal display panel 2, and then the switch S 2 is pressed. Operate ₃ to enter the reduced scale data input state (see Fig. 9). At this time, the operation of the switch S ₃ is detected by the Figure 6 step S40, it is determined that it is in the map meter mode (step S41), still it determines that it is in the normal state (step S42), on the The state register C is set to 1 to enter the reduced scale data input state (step S43). Then, first, the instruction is given to blink the unit currently displayed as the setting target (step S44), and the fifth
In step S3 in the figure, the indicated blinking display is made. When the switch S4 is operated in this state, unit data are sequentially selected, which will be described in detail later. After that, the process moves to the input of new scale data. This is done by operating the switch S ₂ as shown in FIGS. 9 (e) to 9 (g), and the highest digit of the scale, the next digit, ... These are input in order of the lower digits while sequentially specifying them. First, the operation when the input target is designated in the above order while operating the switch S ₂ will be described. At this time, the operation of the switch S ₂ is detected in step S15 of FIG. 6, and then it is determined that the map meter mode is set (step S16), and it is determined in step S17 that the scale data input state is not the normal state. Determined in S19 and step S
At 20, the input target is designated one by one, and each time, the display process for blinking the newly input target is performed. Further, after the input object has been specified as described above, to enter it, each time it performed by operating the switches S _4, but the operation of the switch S ₄ is seventh view of this formation step
Detected in S65, it is determined that the map meter mode is set (step S66), and it is further determined that the scale data is input (steps S67, S70, S73). Then, in step S74, the data to be input is changed. Then, in step S3, the changed one is displayed on the liquid crystal display panel 2. As described above, after inputting the reduced scale data according to the map used for the measurement this time, in order to return to the normal state in order to perform the measurement based on them, as shown in FIG. 9, switch S ₃ again. Manipulate. At this time, the operation is a step
Detected in S40, it is determined that it is in the map meter mode (step S41), it is determined that it is not in the normal state yet and in the scale data input state (steps S42, S45), and then, The state register C is set to 0 to return to the normal state (step S46). Then, in step S47, the scale and unit newly input in the above process are stored in the memory designated by the memory pointer B (that is, rewritten with new scale data or the like), and in step S3, they are stored. Liquid crystal display panel 2
To display. FIG. 10 shows the transition of the display of the liquid crystal display panel 2 in the normal state, the measurement state and the measurement result display state of the map meter mode. As described above, for example,
When 50000 is set as the scale and kilometers are set as the unit of the measured distance, the liquid crystal display panel 2 displays as shown in FIG. Next, the measurement state is set to start the measurement. In this case, the switch S ₄ is operated as shown in FIG. At this time, the operation is detected in step S65 of FIG. 7, it is determined that the map meter mode is set (step S66), it is determined that the normal state is set, and then 2 is set in the state register C. Set the measurement status (step S6)
8). Then, in step S69, the measurement status mark display body 2h
Of instructing the blinking display of, the process of displaying the memory number of the memory of the route data storage unit RM designated by the memory pointer D on the first display unit 2a, and the LED 2 of FIG.
Executes measurable state display processing such as lighting 3. As a result, the display on the liquid crystal display panel 2 is shown in FIG.
Becomes as (Display made "M1" in the first display portion 2a in the figure indicates that the memory M ₁ is designated by the memory pointer D). After the above preparation, the wheel 3 is rolled along the measured route on the map. At this time, each time the rolling becomes a constant length, the waveform shaping circuit of FIG. The signal S _A is output from 25, and each time the signal S _A is output, steps S85 and S86 in FIG.
After proceeding to step S87, the actual distance corresponding to the rolling distance is obtained based on the constant rolling distance and the scale data, and the distance is successively added to the value of the measurement register N. Execute the process. And the steps of FIG.
In S3, the measurement result up to that point, that is, the value of the measurement register N is displayed on the fifth display portion 2g of the liquid crystal display panel 2. For example, when the actual length of the route to be measured is 4.30 Km, the liquid crystal display panel 2 displays a display as shown in FIG. 10C when the measurement is completed. As described above, after the measurement is completed, as shown in FIG. 10, the switch S ₂ is operated to clear the measurement result of this time and prepare for the re-measurement or to end the measurement operation. Operate switch S ₄ to display the measurement results. Here, when the switch S ₂ is operated to clear the measurement result of this time and prepare for re-measurement, the operation is detected in step S15, and steps S16, S17, S19, and S21 are followed by step S22.
Then, processing such as clearing the current measurement result stored in the measurement register N is executed, and the display is shown in FIG.
Return to the state of (step S3). On the other hand, when operating the switch S ₄ to continue to display the results completed for this measurement measuring operation is detected in step S65 in FIG. 7 the operation of the switch S _4, through steps S66, S67, S70 step At S71, the state register C is set to 3 to bring the measurement result display state. After that, in step S72, after that, the measurement stop processing is executed so that the measurement operation is not performed even if the LED 23 is turned off and the wheel 3 is rotated, and the blinking display of the measurement state mark display body 2h is stopped. Instruct. As a result, the display on the liquid crystal display panel 2 becomes as shown in FIG. After the measurement result display state is set as described above, the length of the route measured this time is stored in the memory of the route data storage unit RM of the RAM 13 (in this case, it corresponds to the memory number M1 displayed on the first display unit 2a). may be stored in the memory M ₁₎ which,
To use in the navigation mode described below,
Operate switch S ₂ to return to the normal state (see Fig. 10). At this time, the operation of the switch S ₂ is performed in step S15.
It is determined that the map meter mode is detected (step S16), and it is further determined that the normal state, the reduced scale data input state, or the measurement state is not set (step S1).
7, S19, S21), and proceeds to step S23. Then, in this step, it is determined that the measured data is stored in the measurement register N this time, and then the memory designated by the memory pointer D (in this case, the first display unit).
Distance storage area LA and unit storage area UA of the memory M ₁₎ corresponding to the memory number M1 displayed on the 2a
In step S24, the data and the unit number of the unit are transferred and stored, respectively. Then, in preparation for the next measurement, the value of the memory pointer D is increased by 1 (step S25), and the current measurement data stored in the measurement register N is cleared (step S2).
6), 0 is set in the status register C to return to the normal status (step S27). After that, the process proceeds to step S3, and the display on the liquid crystal display panel 2 is set as shown in FIG. In the measurement state, when the measurement operation is not performed or the measurement data is not stored in the measurement register N because it is cleared by the operation of the switch S ₂ , the switch S ₄ is operated to end the measurement operation. When the switch S ₂ is further operated, as in the above case, steps S15, S1
After steps S6, S17, S19, and S21, the process proceeds to step S23. Here, it is determined that the measurement data is not stored in the measurement register N, and the process directly proceeds to step S27 to return to the normal state. Therefore, the display on the liquid crystal display panel 2 as shown by the broken line in FIG. 10 returns to that shown in FIG. After finishing the measurement for the route with the route length of 4.30 km as described above, we continued to measure for the two routes with the lengths of 10.70 km and 3.30 miles, respectively, and the route data also sequentially. Memory
When stored in the RM, the storage state of the route data storage unit RM is as shown in FIG. (C) Operation in navigation mode To make a plan for the drive etc., measure the length in the map mode described above and set the route stored in the memory in the route data storage section RM of RAM13 at a predetermined time. In order to get to know how fast the vehicle needs to travel, or conversely how many hours the vehicle can travel when traveling at a predetermined speed, the navigation mode As shown, the switch S ₁ is operated in the map meter mode described above. In this case, the above operation is detected in step S10, the value of the mode register M is changed from 2 to 3 to set the navigation mode (step S11), and the instruction is given to change the display of the liquid crystal display panel 2 to the navigation mode. Then (step S12), the process proceeds to step S3, and a display based on the above instruction is performed. FIG. 12 shows the transition of the display of the liquid crystal display panel 2 in the navigation mode, and it is assumed that 0 is set in the status register F and the stored data is displayed. When the switch S ₂ is operated in this state, the lengths of the respective paths stored in the respective memories of the path data storage section RM of the RAM 13 are sequentially changed as shown in FIGS. , Will be displayed along with the memory number. In this case, each time the switch S ₂ is operated, it is detected in step S15, and step S15 is detected.
The process proceeds to step S32 via 16, S30, S31, and while increasing the set value of the memory pointer D by 1, the stored data in each memory of the route data storage unit RM addressed by this memory pointer D is displayed on the liquid crystal display. The processing for displaying on panel 2 is performed. Next, select one of the routes whose length is stored in the memory of the route data storage unit RM as a target for driving, etc., and drive the route in a predetermined time or, conversely, a predetermined speed. To get the time required to re-run in
Above, but will be set for a predetermined time or a predetermined speed, for example, now, as the target of driving such, when the length in the memory M ₂ is to chose a path that is stored, as shown in FIG. 12, first of all, As described above, the memory M ₂ is designated, the length of the path and the like are displayed on the liquid crystal display panel 2, and the switch S ₃ is operated on the display to set the state. in this case,
The operation of the switch S ₃ is detected in step S40, and the status register F is set to 1 in step S52 via steps S41, S50, S51.
To set the above settings. Then, in step S53, the time display 2f is displayed on the fourth display 2d.
Is turned on and the digit of the tens digit of the time to be displayed as the predetermined time on the third display portion 2c is selected, and the display of that digit is blinked to indicate the selection. Then, the display as shown in FIG. After setting the state as described above, the process moves to the time or speed setting. This is done by operating the switch S _{2 so} that the most significant digit of the time (the tenth digit of the hour). The lowest digit, the highest digit of speed, ..., The lowest digit of speed are designated in this order, and the desired value is set to the designated digit. First, the setting digit selection performed while operating the switch S ₂ will be described. In this case, each time the switch S ₂ is operated, it is detected in step S15, and steps S16, S30, S3 are detected.
Through steps S1 and S34, the process proceeds to step S35, and the digits are sequentially designated in the above order, and the designated digit is instructed to blink each time. (When the time digit is designated, the time indicator 2f of the fourth display section 2d is lit and displayed, but when the speed digit is designated, the time indicator is displayed.
Instead of 2f, a display unit that is provided on the second display unit 2b and indicates the unit of speed is lit and displayed. In order to set a desired value in the designated digit as described above, the wheel 3 is rotated while looking at the liquid crystal display panel 2 until the desired value is displayed. At this time, every time the signal S _A is input by this rotation, the process proceeds from step S65 of FIG. 7 through steps S85, S88, S89 to step S90 to set the set value to 1
The set value is stored in the time storage area TA or the speed storage area VA of the memory associated with the path while making it as large as possible, and then the set value is displayed on the liquid crystal display panel 2 in step S3. As described above, when 30 minutes is set as the above-mentioned predetermined time, the display on the liquid crystal display panel 2 is as shown in FIG. 12 (e), and the above-mentioned predetermined speed is 5 km / km.
When the hour is set, the display on the liquid crystal display panel 2 is as shown in FIG. As described above, after setting the predetermined time or the predetermined speed, in order to obtain the speed or the required time from these and the length of the measured route, the switch S ₃ is operated to display the stored data. (See Figure 12). First, the case where the speed is obtained from the set predetermined time and the measured path length will be described. For example, the predetermined time is set to 30 minutes and the liquid crystal display panel 2 displays
When the switch S ₃ is operated while the state is as shown in the figure (e), the operation is detected in step S40, and step S4
1, S50, S51, Italy S55 to step S56 via determines here that still speed data in memory or speed storage area VA of the memory M ₂ according to the route is not stored, then in step S59 It is determined that time data has already been stored in the time storage area TA of the above memory, and step S6
Go to 0. In step S60, the distance storage area of the above memory
Based on the route length data stored in LA and the unit storage area UA, that is, 10.7 kilometers and the time stored in the time storage area TA, that is, 30 minutes, the route length is calculated.
A speed of 21.4 km / hour when traveling for 30 minutes is calculated, the speed is stored in the speed storage area VA of the memory, and the speed is also displayed on the liquid crystal display panel 2. Then, the storage state of the memory M ₂ after the processing of step S60 is performed becomes as shown in FIG. 13 (a). After the processing of step S60, the state register F is set to 0 to display the stored data (step S61), whereby the calculated speed 21.4 km / hour is displayed on the liquid crystal as shown in FIG. Displayed on panel 2. Therefore, the user has 30
It is quite easy to know that the speed of 21.4 km / hour is enough to drive in minutes. Next, a case where the required time is obtained from the set predetermined speed and the measured path length will be described. For example, when the predetermined speed is set to 25.0 km / hour and the switch S ₃ is operated when the display on the liquid crystal display panel 2 is as shown in FIG. 12 (g), the operation is performed at step S 4
Detected at 0, through steps S41, S50, S51, S55, step
Proceeds to S56, the process proceeds to step S57 to determine that the already velocity data is stored in the speed storage area VA of the memory or memory M ₂ according to the route in this step. In this step S57, the path length stored in the distance storage area LA and the unit storage area UA of the memory, that is, 10.7
Based on the kilometers and the speed stored in the speed storage area VA, that is, 5.0 kilometers / hour, the time required for traveling on the route at the speed of 5.0 kilometers / hour is calculated as 2 hours and 8 minutes, and the time is calculated as above. The time is stored in the time storage area TA of the memory, and the time is also added to the liquid crystal display panel 2 to be displayed. Then, the memory M after the processing of step S57 is executed
The storage state of ₂ is as shown in FIG. 3 (b). After the above processing, the process proceeds to step S58, 0 is set in the state register F to return to the stored data display state (step S5
8) Then, in step S3, as shown in FIG. 14 (b), the calculated required time of 2 hours and 8 minutes is also displayed on the liquid crystal display panel 2.
To display. As a result, the user takes 2 hours 8 hours when traveling on the route at a speed of 5.0 km / hour.
It is extremely easy to know that it is minutes. When the switch S ₄ is operated in the above state, that is, the required time of 2 hours and 8 minutes is calculated and displayed on the liquid crystal display panel 2 (the state of FIG. 14 (b)), detected in step S65, through steps S66, S75, S76, leads to step S77, the calculated time is determined to be stored in the time storage area TA of the memory M _2, stored in the time storage area TA It is instructed to start a subtraction process of subtracting a certain time from the current time and updating the memory of the time memory area TA with the result (step S78), and the status register F
2 is set to the timer state. Then, each time there is a clock signal thereafter, the subtraction process is executed in step S2 in FIG. 2, and in each case, the subtraction result, that is, the remaining time is displayed in step S3. Also in case of the above-mentioned operation, further when the switch S ₄ is operated, it is detected at step S65, through steps S66, S75, S76, S80, led to step S81, at this step, The subtraction process is stopped and the stored data display state is restored (step S81). Therefore, the user measures the route length of the specific route on the map according to the present embodiment, further calculates the time required for traveling the route at a predetermined speed, and displays it on the liquid crystal display panel 2.
Switch (in the state of Fig. 14 (b))
Simultaneously operating the S _4, the specific route, when it began to actually traveling at the predetermined speed during traveling, always be able very easily recognize how many hours after possible accomplishment of that path. The present invention is not limited to the above-mentioned embodiment, and various modifications can be applied without departing from the invention. [Advantage of Device] As described in detail above, the device of the present invention calculates the length data measured based on the scale data inputted in advance, and can store a plurality of distance data obtained by this calculation. The stored data can be displayed arbitrarily, and the measured distance data can be easily known. Also,
This device selects the necessary distance unit data from a plurality of distance unit data, converts the distance data according to the selected distance unit data, and stores it in correspondence with the distance unit data.
Since it is displayed, you can save the trouble of converting to various distance units,
It is practically convenient.

[Brief description of drawings]

FIG. 1 is a diagram showing the external appearance of an embodiment of the present invention, FIG. 2 is a diagram showing the arrangement of display members in the liquid crystal display panel shown in FIG. 1, and FIG. 3 is a circuit configuration of the above-described embodiment. FIG. 4 is a diagram showing the configuration of the RAM in FIG. 3, FIG. 5 is a general flowchart showing the outline of the operation of this embodiment, and FIG.
7 and 7 are flowcharts showing in detail the main part of the key processing in the above general flowchart, FIG. 8 is a view showing the transition of the display of the liquid crystal display panel accompanying the mode switching, and FIG. 9 is a map mode. FIG. 10 is a diagram showing the transition of the display of the liquid crystal display panel in the normal state and the reduced scale data input state, and FIG. 10 is a diagram showing the transition of the display of the liquid crystal display panel in the normal state measurement state and the measurement result display state of the map mode, The figure shows the route data storage section R in RAM
FIG. 12 is a diagram showing the memory state of M, FIG. 12 is a diagram showing the transition of the display of the liquid crystal display panel in the stored data display state and setting state of the navigation mode, and FIG. 13 is a diagram after calculating the speed or time in the navigation mode. FIG. 14 is a diagram showing a storage state of a specific memory in the route data storage section RM. FIG. 14 is a display example of the liquid crystal display panel after calculating the speed or time in the navigation mode and a table of the liquid crystal display panel in the navigation mode timer state. It is a figure which shows an example. 1 ... Clock case, 2 ... Liquid crystal display panel, 3 ... Wheel, 3a ... Slit, 11 ... ROM, 12 ... ROM address control section, 13 ... RAM, 14 ... Instruction decoder, 15 ... … Operation circuit, 16 …… Latch circuit, 17 …… Oscillator, 18 …… Timing generator, 19 …… Key input section, 20 …… Dividing circuit, 22 …… LED driver, M …… Mode register, B …… Memory pointer, SR ... Scale data storage section, C ... Status register, RM ... Path data storage section, D ... Memory pointer, F ... Status register, UA ...
… Unit storage area, LA …… distance storage area, TA …… time storage area, VA …… speed storage area.

Claims (1)

[Scope of utility model registration request] 1. Scale data input means for inputting scale data, distance unit data selecting means for selecting desired distance unit data from a plurality of distance unit data, and length for measuring the length between two points. Measuring means and calculating means for calculating the length measured by the length measuring means on the basis of the scale data input by the scale data input means and the distance unit data selected by the distance unit data selecting means to obtain distance data. A storage means for storing a plurality of distance data obtained by the calculation means and the selected distance unit data in association with each other; and a display for displaying the plurality of distance data and the distance unit data stored in the storage means. Means, and a map meter characterized by comprising.