JP3024560B2 - Map display device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to a general-purpose CD, for example.
The present invention relates to a map display device that can be implemented using the I device.

[0002]

2. Description of the Related Art Various navigation devices using GPS or the like have been proposed. In such a conventional navigation device, a device in which the entire system is integrated is generally implemented. However, in such an integrated device, the processing program is generally fixed in a ROM or the like. Therefore, for example, in order to perform display other than a map or to provide guidance by voice, the processing program fixed in the ROM or the like is changed. And the system was inflexible.

On the other hand, there has been proposed a system for inputting data from a positioning sensor using a GPS or the like and using a general-purpose personal computer to perform various displays. According to this, the flexibility of the processing program and the like can be easily expanded. In this case, an interface such as RS-232C has conventionally been used to input data from the positioning sensor to the personal computer.

Meanwhile, there is an apparatus defined by an international standard called CD-I. In this CD-I apparatus, data and a processing program for the data are provided on a recording medium (compact disk). The recording medium is mounted on the apparatus, and an output such as a desired display can be obtained by a simple operation. It is. Therefore, it has been considered that data from a positioning sensor using the above-described GPS or the like is input to such a CD-I device to display a map, for example.

However, such a CD-I apparatus is not generally provided with an unnecessary interface or the like for the purpose of reducing the size and weight. For example, a pointing device such as a mouse is used as a general-purpose input means. Is merely provided.
Also, providing a new interface such as RS-232C as described above requires a significant modification of the device,
It was not easily realized.

[0006]

SUMMARY OF THE INVENTION The present invention has been made in view of the above points, and the problem to be solved is, for example, the use of a general-purpose CD-I device to provide a map display device. For example, in order to input data from a positioning sensor using a GPS or the like conventionally, for example, a CD
-I required a major modification of the device and could not be easily realized.

[0007]

For this reason, in the present invention, a detachable positioning sensor is attached to, for example, a CD-I device to display map data. With a simple configuration, for example, map data provided on the CD-I and positioning data from the positioning sensor can be displayed in association with each other. For example, various displays using various processing programs provided on the CD-I, etc. Can be realized.

[0008]

DESCRIPTION OF THE PREFERRED EMBODIMENTS That is, the present invention relates to a CD-I device.
And a satellite positioning system with a built-in means for performing predetermined data conversion.
And program data along with map data.
A map display device comprising a written external storage medium.
Thus, the positioning data of the satellite positioning sensor is transferred to the CD-I device.
CD-I device converted to the specifications of the input section for manual operation data
And convert the input data back to positioning data
Co If you perform display in association with positioning data from the map data and the satellite positioning sensor provided in the external recording medium
The program for performing the reverse conversion and display of the positioning data
Is written to the external storage medium as program data.
Is what it is.

The present invention will be described below with reference to the drawings. FIG. 1 is a block diagram showing the entire system of an example of a map display device to which the present invention is applied. In FIG. 1, C
A CD-I player 1 as a DI device is provided.
The CD-I player 1 has manual operation data.
An interface 2 for a so-called pointing device (such as a mouse) as an input unit is provided.

A GPS receiver 3 as a satellite positioning sensor is provided. For example, a signal from an antenna 4 is supplied to the GPS receiver 3. Then, the signal from the GPS receiver 3 is extracted to a plug 5 adapted to the interface 2. At the same time, the GPS receiver 3 is provided with a converter 6 for converting the positioning data received and decoded into a signal format for a pointing device, for example.

[0011] Furthermore, outside the CD-I player 1
A CD-I disk 7 is provided as a unit recording medium.
The CD-I disk 7 stores, for example, video and / or audio data together with normal map data. For example, the data converted into the signal format for the pointing device described above is converted to the original data. A conversion program 8 for conversion is provided.

FIG. 2 is an overall block diagram of an example of the system. In FIG. 2, the above-mentioned GPS receiver 3
The signal from the antenna 4 is supplied to the amplifier 31. The signal from the amplifier 31 is supplied to the first IF circuit 33 through the first mixer 32, and the signal from the IF circuit 33 is supplied to the second IF circuit 3 through the second mixer 34.
5 is supplied.

Further, a clock signal from a reference oscillator (TCXO) 36 is supplied to a second mixer 34. A clock signal from a reference oscillator 36 is supplied to a variable oscillator (VCO) 38 through a PLL circuit 37, and a signal from the variable oscillator 38 is supplied to a first mixer 32 through a tripler circuit 39. As a result, predetermined oscillation signals are supplied to the mixers 32 and 34, respectively, and the desired G
The PS signal is received.

The signal from the IF circuit 35 is GP
S data is supplied to a demodulation circuit 40, and the demodulation circuit 40
Is supplied to the positioning calculation unit 41. The clock signal from the reference oscillator 36 and the signal from the PLL circuit 37 are supplied to the positioning calculation unit 41. Further, a RAM 42 and a ROM 43 are provided in association with the positioning calculation unit 41, whereby the received GPS signal or desired positioning data is extracted.

The positioning data is supplied to a conversion means 6 for converting the positioning data into a signal format for a predetermined pointing device, for example. The converted signal is supplied to the CD-I player 1, for example, an interface 2 for a pointing device through the plug 5. Further, in the CD-I player 1, a signal from the interface 2 is supplied to the MPU 12 through the system bus 11.

The CD-I player 1 is provided with a so-called CD player 13.
Is loaded with the CD-I disk 7 provided with the above-mentioned conversion program 8. A signal from the CD player 13 is supplied to a CD-DA control circuit 14, and the control circuit 14
The audio signal reproduced in step (1) is taken out to the output terminal 16 through the output circuit 15.

Further, a signal from the control circuit 14 is supplied to the system bus 11 through the CD control circuit 17. A signal from the system bus 11 is supplied to an ADPCM demodulation circuit 18, and a demodulated audio signal is supplied to an output circuit 15. In addition, a DMA control circuit 19, a clock and calendar circuit 20, a RAM 21, a ROM 22, and the like are connected to the system bus 11.

A signal from the system bus 11 is supplied to the RAMs 24a and 24b through the access control circuit 23, and a signal from the RAMs 24a and 24b is supplied to the video processing circuit 25 through the access control circuit 23.
The signal from the video processing circuit 25 is supplied to a display unit 26 such as a color liquid crystal display.

Therefore, in this system, the positioning data from the GPS receiver 3 is converted into a signal format for the pointing device and input to the pointing device interface 2 of the CD-I player 1. The CD-I player 1 can perform various displays using the positioning data inversely converted by using the conversion program 8 of the CD-I disk 7.

FIG. 3 shows an example of a flowchart of the operation of the conversion means 6 for converting the positioning data into, for example, a signal format for a pointing device. In this figure, when the power is turned on, in step [1], GP
The positioning data of S is obtained. Next, in step [2], necessary data in the positioning data is extracted and decomposed into blocks. Further, in step [3], the data divided into blocks is bit-converted and decomposed into bit patterns.

Further, in step [4], it is determined whether or not it is the first byte. If it is the first byte (Y), the header bit is turned on in step [5]. If it is not the first byte (N), the header bit is turned off in step [6]. Further, at step [7], a byte is transmitted, and at step [8], it is determined whether or not the data is completed. If not (N), the process returns to step [7]. When the data ends (Y), the process returns to step [1].

FIG. 4 shows examples of signals for converting positioning data into a signal format for a pointing device, for example. In this figure, A indicates positioning data. Here, GPS positioning data is normally output in ASCII code, but is output in a bit pattern in this example.
Incidentally bit pattern, Y ₂₃ to Y ₀ indicating the latitude, X ₂₃ to X ₀ indicating a longitude, D ₈ to D ₀ indicating the orientation, V indicating the speed
_{9 to} V ₀ , S _{3 to} S ₀ indicating the number of satellites being received, and G _{5 to} G ₀ indicating the reception state (GDOP).

FIG. 2B shows a signal format for a pointing device, for example. That is, 7 data bits d ₆ to d ₀ are provided from the LSB side following the start bit in a 1-bit cycle. In addition, an end bit having a 2-bit cycle is provided, and 1 byte (7 bits)
Is formed.

In this signal format, d ₆ is a header bit, the header bit of the first byte is 1 (on), and the header bits of the second and subsequent bytes are 0 (off). . Then, as shown in C of the figure, the above-described bit pattern of the positioning data is developed and output. In this way, the positioning data is converted into the signal format for the pointing device.

The above-described system can be used for, for example, a navigation device to perform various displays using a CD-I (for example, combining a map with an aerial photograph and displaying the current position on the map). Applied to a device that displays a sightseeing guide by video and audio, a device that displays the constellation of the position and time by referring to the current location and the clock calendar in the CD-I player 1, and a device that displays a chart, tide level, etc it can.

Further, the invention of the present application creates a conversion device provided with a conversion means 6 for converting positioning data into a signal format for a pointing device.
Positioning data from the receiver may be input to the pointing device interface 2 of the CD-I player 1.

[0027] Thus, according to the above-mentioned map display device, fitted with a removable positioning sensors CD-I system, CD
-I device can realize various displays and the like by using various processing programs with a simple configuration by associating and displaying map data provided on a recording medium and positioning data from a positioning sensor. Things.

[0028]

According to the present invention, by attaching a detachable positioning sensor to a CD-I device and displaying map data, the map data and the positioning sensor provided on a recording medium, for example, have a simple configuration. It is possible to perform display by associating the positioning data from the PC with various kinds of processing programs provided on a recording medium, for example, and realize various displays.

Further, the recording medium stores video and / or audio data together with the above-mentioned map data, and these video and / or audio data can be reproduced together with the map data.

The video information stored in the recording medium is
It can also be displayed in combination with the above-mentioned map data.

[Brief description of the drawings]

FIG. 1 is a configuration diagram of an example of a map display device according to the present invention.

FIG. 2 is a block diagram for the explanation.

FIG. 3 is a flowchart for the explanation.

FIG. 4 is a signal format diagram for the explanation.

[Explanation of symbols]

Reference Signs List 1 CD-I player, 2 interface for pointing device, 3 GPS receiver, 4 antenna, 5 plug, 6 conversion means for converting positioning data into signal format for pointing device, 7 C
Conversion program for inversely converting data converted to a signal format for a DI disk, 8 pointing device to the original data

────────────────────────────────────────────────── ─── Continuation of the front page (56) References JP-A-3-85700 (JP, A) JP-A-1-287414 (JP, A) JP-A-1-173819 (JP, A) JP-A 64-64 16917 (JP, A) JP-A-61-251890 (JP, A) JP-A-58-30617 (JP, A) JP-A-63-62715 (JP, U) Takehiro Izumi (Director, NHK Research Laboratory) EL Electronics Life September Issue (1991), published by The Japan Broadcasting Publishing Association, published date 1991.9.1, P73-81 (58) Fields investigated (Int. Cl. ⁷ , DB name) G01C 21/00 G01S 5 / 02 G08G 1/005 G09B 29/00-29/10 G01S 5/14

Claims (3)

(57) [Claims] 1. A satellite positioning sensor incorporating a CD-I device and means for performing predetermined data conversion
And the specified program data is written together with the map data.
A map display device comprising an external storage medium and positioning data of the satellite positioning sensor.
Of the above CD-
And input to the I unit, when the input data for displaying in association with positioning data from the map data and the satellite positioning sensor provided in the external recording medium is inversely converted into the positioning data co
In addition, a process for performing the inverse conversion of the positioning data and the display
Is stored in the external storage medium as the program data.
A map display device , which is written in a map. 2. The map display device according to claim 1, wherein the external recording medium stores video and / or audio data together with the map data, and the CD-I device stores these data. A map display device for reproducing. 3. The map display device according to claim 2, wherein the map data and the video data are combined and displayed on the CD-I device.