JPS587679A - Map data cassette tape - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed description of the invention] This relates to cassette tapes for data.

If you use a map data cassette tape that stores map data on a conventional cassette tape for an in-vehicle navigator,
It is not possible to automatically distinguish between a map data cassette tape and a general music cassette tape, so the music playback device and the map data reading device of the in-vehicle navigator must be provided separately, or a changeover switch must be provided. It is necessary to leave the operation to the driver.

The present invention has been made in view of the above problems, and provides a map data cassette tape suitable for use in a single-mounted navigator.

That is, the navigator function is activated by providing a window in the center of the side surface of the cassette tape housing opposite to the tape running surface.

The present invention will be described below with reference to embodiments shown in the drawings.

FIG. 1 is an overall configuration diagram showing one embodiment.

In this Figure 1, l is an azimuth detection device, which includes an azimuth sensor that detects the X and Y components of the earth's magnetism according to the traveling direction of both I and I, and an A/D converter that converts the signal from this azimuth sensor into a digital signal. Equipped with a device that responds to the direction of travel of the vehicle! ，! This generates the component digiter tvG4. 8 is a distance sensor, which measures the vehicle's unit mileage (for example, about 8
A distance pulse is generated every 9.2 ex). Reference numeral 8 denotes a reading device, which searches for and reads map data of a specific district from a cassette that stores map data of a plurality of districts (including absolute coordinate data to the upper right of each map).

The software's digital control is controlled according to a predetermined control program. ~A microcomputer that executes arithmetic processing, including 0PU4a, ROM4b, and RAM4c.

A stabilization circuit [11 circuit (
The direction detecting device 1 and 2 are activated by receiving a stabilizing voltage supplied from the azimuth detector (not shown).

Performs arithmetic processing upon receiving the Y component digital signal, the distance pulse from the distance sensor 2, the reading signal from the reader 8, etc., and generates a display signal for displaying a map of a specific area, driving route information, etc. It is something to do. In addition, R
The AM4c is constantly backed up with power from an onboard battery.

5 is a cathode ray tube (hereinafter referred to as ORT) controller which receives display signals from the Microcomputer Society and sends map data, travel route information and character data of a specific area to the first. The third graphic memory (always backed up as a source) stores the stored map data, driving route information, or character data individually and generates video signals and synchronization signals for ORT display. It is something. Reference numeral 6 denotes an ORT display device, which displays a map and driving route of a specific area on an ORT display using the video signal and synchronization signal from the QRT controller 5. Reference numeral 7 denotes a touch panel unit, which is attached to the display surface of the ORT display device 16 and generates a serial signal in response to a touch operation on a specific touch area among the 12 divided touch areas provided on this touch panel. It is something.

Next, FIGS. 8(a), Cb) and (0) show external views of the map data cassette tape, (&) is a front view, and (b).

(,) are views of what is shown in the front view from ■ and ■, respectively. This map data cassette tape is the same size as a normal music cassette tape, and has a tab on the side of the housing opposite to the tape running surface to prevent accidental erasure! Window 22 of the same size as 0.21 with nails 2o and 2
It is located in the center of 1.

Next, FIG. 8 is a detailed configuration diagram of the reading device MS.

Reference numeral 81 denotes a cassette tape discrimination circuit that determines whether or not a cassette tape is for map data when it is inserted by detecting the presence of a window (mechanically or by a detection device using light); 82; is a map data cassette tape detection signal from the cassette tape discrimination circuit 81 (
A signal from the cassette tape read by the magnetic head 88 is transmitted to the control circuit 85 when a map tape signal (hereinafter simply referred to as a map tape signal) is generated, and a signal from the cassette tape read by the magnetic head 88 is transmitted to the magnetic head 88 by the cassette tape discrimination circuit 81 when a map tape signal is not generated. 84 is an amplifier circuit which amplifies the signal from the cassette tape read by the magnetic head 38 and transmits the audio signal to a speaker (not shown). 85 is a control circuit, which includes an interface circuit with the microcomputer 4, a drive circuit that rotates the microcomputer receiving motor 86 through the interface circuit, and amplifies the signal read by the magnetic head 88. an amplifier circuit;
It is equipped with a signal conversion circuit that converts the signal passed through this amplifier circuit into a digital signal and generates the signal in the microcomputer 4 via an interface circuit.

Further, the touch panel section 7 includes 8 as shown in FIG.
Il from 1-42! It has a divided touch area and is composed of two pieces of glass and a transparent conductive film formed in a matrix on each glass.When a specific touch area is pressed, the transparent conductive film in the matrix is caused by the deflection of the glass. The touch area is detected by the contact of the film, and a serial signal (consisting of a start signal and a touch information signal) corresponding to the detected touch area is generated by a touch signal generation circuit (not shown). Note that this touch signal generation circuit generates touch information at that time in the form of a serial signal every 40 m5ec.

Furthermore, Fig. 6 shows the data area corresponding to one district on the cassette tape 3a, where M is the absolute coordinate of the upper right corner of the map of that district (coordinate with respect to the North Pole).
A header section stores data, B is a map data storage section that stores map data of the area, and X is a blank section. Therefore, by reading part B with the reading device 8, map data and absolute coordinate data of a specific area can be provided to the microcomputer 4.

The operation of the above configuration will be explained with reference to the display explanatory diagram in FIG. 6 and the calculation flowcharts shown in FIGS. 7 and 8. FIG. 7 is a calculation flowchart showing the overall calculation processing of the main routine of the microcomputer 4, and FIG. 8 is a calculation flowchart showing the interruption calculation to -chin calculation processing based on the distance pulse from the distance sensor 2.

Now, in a vehicle equipped with the components 1 to 7 shown in FIG. 1, when the key switch is turned on at the start of operation, each part wi and the air thread are activated by receiving power from the vehicle battery. Then, when the microcomputer is turned on, it receives a stabilized voltage of 5V from the stabilized power supply circuit and enters the operating state, starting at the start step 100 in FIG.
Then, the arithmetic processing is started, and the process proceeds to initialization - goo, where the registers, counters, latches, etc. in the microcomputer 4 are set to the initial state necessary for starting the arithmetic processing. After this initial setting, the mode calculation routine 800 and current position calculation ~-chin 400 calculation processing are performed several times.
It is executed repeatedly at a period of about m8θC.

That is, in this mode calculation routine 800, either the map mode or the character mode is switched and selected based on the touch data when the touch area 84 in FIG. 4 on the touch panel section 7 is pressed. A map as shown in the figure is displayed on the ORT display device 6, and when the cursor movement area on the touch panel section 7 is pressed, the cursor indicating the current position is moved according to the area (3B or 3B in Figure 4). 88
(upwards when pressed, downwards when 40 or 41 is pressed, leftwards when 85 is pressed, rightwards when 88 is pressed), and when in character mode, the map tape is displayed by the reader 8. When a signal is generated, a character as shown in Figure 6 is displayed, and 89.4 in Figure 4 is displayed.
Increment switch 51 corresponding to a touch area of 0.41°4g. Decrement switch 62. Set switch 58. By operating the reset switch 54, it is possible to specify a map of a designated area, and when switching maps, arithmetic processing is executed to correct the data of the current position and driving route (based on absolute coordinate data for each map), and the current position calculation μm adjustment 400 is executed. Proceed to.

In this current position calculation routine 400, when the distance flag is set by the calculation processing by the interrupt calculation routine to be described later,
The distance component Dx, :oy is the distance component Dx,
Dy is added and updated, and each distance component DI and D7 are 5.
When the value becomes larger than 0#l or becomes smaller than -50m, the current position data and traveling trajectory data in the second graphic memory are moved by ±50m (therefore, the current position of the ORT display device 6 Then, the running position is moved upward, downward, leftward, rightward, or upward by ±50 wI), and the process returns to the mode calculation routine 800.

After that, the main routine calculation process from this mode calculation routine SOO to the current position calculation routine 400 will be performed for several tens of meters.
It is repeatedly executed at a period of approximately sθC.

Then, for the repeated calculations of this main routine, the distance bar/1/nu from the distance sensor 2 is calculated by the microcomputer 4.
When the signal is applied to the interrupt (IN?) terminal of the microcomputer 4, the microcomputer 4 temporarily suspends the arithmetic processing of the main routine and executes the interrupt arithmetic processing shown in FIG. That is, the arithmetic processing is started from an interrupt start step 501, and the process proceeds to an integration step 602, where unit distance data (equivalent to approximately 89.2e:m) is integrated into the distance data D stored in the RAM 4c. The process then proceeds to distance determination step 508, where it is determined whether the distance data p has reached 6.25 m.

At this time, if the distance data D has not reached 645#I, the determination is NO and the process proceeds to return step 510, but if the distance dark D has reached 6.26 pieces, the determination is Y.
If IB is not selected, the process proceeds to the direction signal input step 504. Then, in this azimuth signal input step 604, the X and Y component signals Xh, Ya of digital ~ from the azimuth detection device 1 are input.
(East and north are positive directions, west and south are negative directions), and proceed to average direction calculation step 505, and the previous direction data Xo,
Y.

(a, g 5 n * azimuth data before constant driving) and the current azimuth data Xa, Ya to calculate average azimuth data X, Y, proceed to distance component calculation step 506, and calculate distance component Dx in the X direction. 6451/V'XI-Go Yl-1! The distance component Dy of the direction is determined as 615Y/Jkor'-'7ko1 (X/JXl's lower value corresponds to cos θ for the counterclockwise angle θ with the east direction as a reference, and Va's lower value corresponds to sin θ)
, proceed to storage step 607 and store the current orientation data Xa,
Ya is memorized as Xo and To for the next time, the process proceeds to distance data reset step 508 to reset the distance data D to 0, the process proceeds to distance flag set step 509 to set the distance flag, and the process proceeds to return step 610 to proceed to the next step. Returns to the main routine that was temporarily interrupted. That is, in this interrupt calculation, the distance data p is cumulatively updated every time a unit distance is traveled, and the distance data D is 645 seconds.
When reaching I, distance components Dx and Dy in the X and Y directions that reach this 8.26 solution are calculated, and arithmetic processing is executed to set a distance flag.

Therefore, the current position data and traveling trajectory data in the second graphic memory are sequentially changed by the main routine repeated calculations by the mode calculation routine 800 and the current position calculation routine 400, and the interrupt calculation shown in FIG. At the same time, select screen 11!1 of the ORT display device 6 according to the specified mode, and if it is in the map mode, the graphic piece (2) of the map (including the display of the current position and traveling trajectory) will be displayed. , if the character mode is selected, a map-specified character screen shown in FIG. 6 is displayed.

As described above, in the present invention, a cassette tape for map data storing map data for displaying road maps of a certain area is provided with a cassette tape on the side opposite to the tape running surface of the cassette tape housing. Since there is a window in the center of the 1111 side, this window can be read by a cassette tape reader to distinguish it from a general music cassette tape.Furthermore, since the window is in the center of the side, there is no layer on either the front or back. 1 because the device of that window does not change even if you
An excellent effect is that a single detection device can detect the chamber from either the front or the back.

[Brief explanation of the drawing]

Figure 1 is an overall configuration diagram of the single-mounted navigator, Figure 2 is an external view of the cassette tape for ground data, Figure 8 is a detailed configuration diagram of the reading device, and Figure 4 is an explanation showing the touch area of the touch panel section. Figure 5 is an explanatory diagram showing the data area of the cassette tape for map data, Figure 6 is a display explanatory diagram showing the display state of the aX display device, and Figure 7 is the overall calculation of the main routine of the microcomputer. a calculation flow chart showing the processing;
FIG. 8 is a calculation flowchart showing the calculation processing of the interrupt calculation routine based on the distance bias from the distance sensor. l... Orientation detection device, 2... Distance sensor, 8...
Reading device f, a a...cassette tape, 4...
Microcomputer, 5...0IIT controller, 6...OR? Display device, 7...touch panel section. Representative Patent Attorney Takashi Mabe 2nd ■ ↓ (d) Σ 3 Figure 4 Figure 5 Figure 6 Figure 7

Claims (1)

[Claims] This is a map data cassette tape that stores map data for displaying road maps of multiple districts on the tape, and a window is provided in the center of the side surface of the cassette tape housing opposite to the tape running surface. Characteristic map data cassette tape.