TWI477744B - Navigation gradient map, its generating method and navigation device - Google Patents

Description

Gradation map for navigation, method for generating same and navigation device

The present invention relates to a map, and more particularly to a progressive map for navigating and simultaneously presenting map information and road information of different levels in a map.

The general map will display map information and road information at different levels according to the scale. In the case of a large scale, the map presents a wide range of maps, but its map range is less detailed, such as only the main roads and no secondary road information such as streets and lanes. In the case of a small scale, the map presents a smaller map and the map information is more detailed, in addition to the main roads will also show the streets and lanes. However, when the user views such a conventional map, the scale of the map must be switched from time to time to obtain the required map information, and the operation procedure is cumbersome.

Therefore, the application of the Republic of China Publication No. 201044256 provides a digital map that can enlarge a local area. Specifically, when the digital map shows an original map with a large scale and a wide map range, the user can select an area to be enlarged and display a partial enlarged map of the area to obtain more detailed map information. However, the partial enlarged map of the digital map is presented in the manner of a pop-up window, which partially covers a part of the original map, and the display position does not correspond to the enlarged area in the original map, and the road displayed by the partially enlarged map cannot be connected. The road displayed on the original map affects the intuitiveness of viewing the road. If such a digital map is used in a navigation device, the connection between the map information and the road information is poor. Will affect the smoothness of the owner's driving.

Accordingly, it is an object of the present invention to provide a progressive map for navigation. The gradient map displays a wide range of maps and provides detailed map information in local areas with good road information connectivity.

Thus, the gradation map for navigation of the present invention is converted from an original map, which displays most of the main road information and most of the secondary road information. The gradient map includes a reserved block and an adjusted block. The reserved block presents part of the main road information and part of the secondary road information of the original map. The adjustment block surrounds the reserved block and presents main road information in the original map that is different from the reserved block, and the scale is larger than the reserved block. The at least one main road of the reserved block is connected to a corresponding main road in the adjusted block.

Preferably, the gradient map presents a map range equivalent to the original map and the size is smaller than the original map, wherein the scale of the reserved block is equivalent to the original map, and the scale of the adjusted block is The system is larger than the original map.

More preferably, the adjustment block includes a plurality of sub-blocks that are gradually distributed from the inside to the outside and surround the reserved block, and the scales of the sub-blocks are incremented from the inside out.

Preferably, the reserved block is located at a symmetry center of the gradation map, and the adjustment block includes a plurality of sub-blocks that are gradually distributed from the inside to the outside and surround the reserved block.

Another object of the present invention is to provide a production of the aforementioned progressive gradient map Method of birth.

Therefore, the method for generating a gradation map for navigation according to the present invention comprises the following steps: (A) receiving an original map and an adjustment parameter information for adjusting a scale of the original map; (B) constituting the original according to the adjustment parameter information. Converting the map into a gradient map, the gradient map comprising a reserved block and an adjustment block surrounding the reserved block, and the scale of the reserved block is smaller than the scale of the adjusted block; and (C) The gradient map is displayed.

Preferably, the gradient map presents a map range equivalent to the original map and the size is smaller than the original map, wherein the scale of the reserved block is equivalent to the original map, and the scale of the adjusted block is The system is larger than the original map.

Preferably, the original map presents most of the main road information and most of the secondary road information, and the reserved block presents part of the main road information and part of the secondary road information of the original map, and the adjusted block is not found in the original map. The main road information of the reserved block is reserved, and at least one main road in the adjusted block is connected to a corresponding main road in the reserved block.

Preferably, the original map presents most of the main road information and most of the secondary road information, and in step (B), the main road information of the original map and the secondary road information are respectively converted to the reserved block and The adjustment block, and the generating method further comprises a step (D) between the step (B) and the step (C): deleting the secondary road information in the adjustment block of the gradient map.

Preferably, the original map is converted to the gradient layer in step (B) The figure includes the following sub-steps: (B1) bending the original map to form a deflected original map, and the curvature of the original map is determined by the adjustment parameter; (B2) projecting the original map of the deflection to A virtual plane that causes the virtual plane to present the gradient map.

Preferably, the adjustment block includes a plurality of sub-blocks which are gradually distributed from the inside to the outside and surround the reserved block, the number of the sub-blocks corresponding to the adjustment parameters, and the sub-blocks The scale is incremented from the inside out according to the adjustment parameter.

Preferably, the scale of the sub-blocks is further increased from the inside to the outside according to the size of the original map and the size of the adjustment block.

Preferably, the reserved block is located at a symmetry center of the gradation map, and the adjustment block includes a plurality of sub-blocks that are gradually distributed from the inside to the outside and surround the reserved block.

It is still another object of the present invention to provide a navigation device that uses the aforementioned gradient map to perform a navigation function.

Therefore, the navigation device of the present invention comprises a processing module, a storage module, a wireless module and a display module.

The storage module is electrically connected to the processing module and stores a plurality of original map information. The wireless module is electrically connected to the processing module and receives a wireless positioning signal and transmits the wireless positioning signal to the processing module. The display module is electrically connected to the processing module.

The processing module receives an adjustment parameter information, converts an original map into a corresponding gradient map, displays the gradient map on the display module, and adjusts the gradient according to the wireless positioning signal. Map display Map location; the gradient map includes a reserved block and an adjustment block surrounding the reserved block, and the scale of the reserved block is smaller than the scale of the adjusted block.

Preferably, the gradient map presents a map range equivalent to the original map and the size is smaller than the original map, wherein the scale of the reserved block is equivalent to the original map, and the scale of the adjusted block is The system is larger than the original map.

Preferably, the original map presents most of the main road information and most of the secondary road information, and the reserved block presents part of the main road information and part of the secondary road information of the original map, and the adjusted block presents the difference in the original map. The main road information of the reserved block, and at least one main road in the adjusted block is connected to a corresponding main road in the reserved block.

Preferably, the adjustment block includes a plurality of sub-blocks which are gradually distributed from the inside to the outside and surround the reserved block, the number of the sub-blocks corresponding to the adjustment parameters, and the sub-blocks The scale is incremented from the inside out according to the adjustment parameter.

Preferably, the scale of the sub-blocks is further increased from the inside to the outside according to the size of the original map and the size of the adjustment block.

Preferably, the reserved block is located at a symmetry center of the gradation map, and the adjustment block includes a plurality of sub-blocks that are gradually distributed from the inside to the outside and surround the reserved block.

The effect of the invention is:

1. Gradual maps contain scaled blocks equal to the original map's reserved blocks and scaled blocks larger than the original map's adjustment blocks, but can be displayed smaller The size renders the map range equivalent to the original map.

2. The reserved blocks of the Gradient Map display the main road information and secondary road information, and provide detailed map information. At the same time, the adjustment block displays the main road information that is connected to the reserved block and presents a wide map range. Therefore, the reserved block and the adjusted block exhibit excellent connection and intuitiveness, and it is convenient for the vehicle owner to observe the traveling route during navigation.

The above and other technical contents, features and advantages of the present invention will be apparent from the following detailed description of the preferred embodiments of the accompanying drawings.

Referring to FIG. 1 to FIG. 3, a first preferred embodiment of the progressive map 1 for navigation according to the present invention is shown. The gradation map 1 is converted from an original map 2, which contains most of the main road information and most of the secondary road information, and the gradual map 1 presents the converted main road information and secondary road information for the user's reference. . In addition, the gradient map 1 can be applied to the navigation device 3 of FIG. 4, but not limited thereto, and can also be applied to an electronic device such as a mobile phone or a computer.

The gradation map 1 includes a reserved block 11 (a rectangular area defined by a broken line in FIG. 1) and an adjustment block 12 surrounding the reserved block 11 (such as the dotted line in FIG. 1 to the inside of the solid line frame) Area). The reserved block 11 mainly presents the current location of the user and the road information in the vicinity thereof. In other words, the reserved block 11 only presents part of the main road 13 and part of the secondary road 14 of the original map 2, and the size of the reserved block 11 The size (the range of road information that can be presented) is a preset value. Adjustment block 12 is rendered by the original 2 is converted and connected to the main road 13 of the reserved block 11, and its scale is larger than the reserved block 11. Of course, the size, position, and scale of the reserved block 11 or the adjustment block 12 may vary according to different requirements, and are not limited to the embodiment, as long as the scale of the adjustment block 12 is larger than the scale of the reserved block 11. can.

In this embodiment, the reserved block 11 is located at the center of symmetry of the gradation map 1, and the adjustment block 12 can be controlled to present a plurality of sub-blocks 121 surrounding the reserved block 11 from inside to outside (see FIG. 2). And the scale of the sub-blocks 121 is incremented from the inside out. The reserved block 11 can be displayed at any position of the gradation map 1 , and the adjustment block 12 can also be divided into a plurality of sub-blocks 121 as shown in FIG. 1 , which is a setting manner that can be adjusted as needed, and is not limited to the embodiment. Revealed content.

The method of generating the gradient map 1 will be described in detail below.

Step S1 and step S2: receiving an adjustment parameter information and an original map 2 information. The adjustment parameter information includes an adjustment parameter for adjusting the scale of the adjustment block 12 in the gradient map 1, and a block number parameter determining the number of sub-blocks 121.

Step S3: Convert the original map 2 into a gradient map 1 according to the adjustment parameter information.

In this embodiment, the scale of the reserved block 11 is preset to be consistent with the original map 2, so the reserved block 11 does not need to be specially converted, and only part of the map information of the original map 2 needs to be directly displayed (with the size of the reserved block 11) Size). The adjustment block 12 is converted from the original map 2, and its scale is larger than the reserved block 11, and includes a plurality of sub-areas with different scales. Block 121. Therefore, the following describes in detail how the adjustment block 12 converts the presentation according to the adjustment parameter information.

Referring to Figure 2, the meaning of each representative symbol will first be explained. Subsequent paragraphs, m for adjustment parameter, X 2 _I represents the original map for converting a size of each sub-block region 121 in the X direction, and Represents the sum of all X _i . Among them, the adjustment parameter m and It is set by the user, and each X _i is the result of calculation:

For example, the user specifies the size of the original map 2 in the X direction and will The length is set to 13 cm, and the original map 2 has a scale of 2 km/cm. therefore, Corresponds to a map range of 26 kilometers. Further, since the user setting divides the adjustment block 12 into two sub-blocks 121, the value of the adjustment parameter m is 2.

On the other hand, in the embodiment, X _i ' represents the size of each sub-block 121 in the adjustment block 12 in the X direction, and X _i ' is converted from the corresponding X _i in the original map 2, and the two correspond to the same The map range, and the farther away from the sub-block 121 of the reserved block 11, the i value increases. In addition, the sum of all X _i ' representative. In this embodiment, Is a fixed value that has been preset, but It can also be designed to be set by the user, not limited to a preset fixed value:

For example, here It has been preset to 4 cm, and the adjustment block 12 divides the sub-blocks 121 by equal lengths in the X direction, so the length dimensions of the respective sub-blocks 121 in the X direction are exactly the same (indicated by C, where C is equal to 2 Gongt):

In addition, since this step is to convert the larger original map 2 correspondingly into the smaller scale gradient map 1, there is a conversion proportional relationship (represented by S _i ) between X _i and the corresponding X _i ' , definition as follows:

Wherein, P represents a scaling parameter, which is set by the user by adjusting the parameter m. And preset The calculated value, the calculation formula will be explained in the following paragraphs. As can be seen from the above equation, the conversion ratio S _i of each sub-block 121 increases as it moves away from the reserved block 11, and the difference between the conversion ratios S _i of the adjacent sub-blocks 121 is P/m.

Next, the calculation method of the scaling parameter P will be described. according to Definition:

According to the above formula, the scaling parameter P can be expressed as:

Therefore, S _i can be further rewritten as:

Therefore, each X _i in the original map 2 can be determined by:

According to the above formula, Is a preset value (4 cm), And m is the value set by the user (13 cm and 2, respectively), so S ₁ can be determined as 2.5, S ₂ is 4, and further, X ₁ is 2 × 2.5 = 5, and X ₂ is 2 ×. 4=8.

That is to say, the original map 2 presents a map range of 10 km and 16 km with X ₁ (5 cm) and X ₂ (8 cm), respectively, with a scale of 2 km/cm. After converting to the gradient map 1, each sub-block 121 of the adjustment block 12 is respectively (2 cm) and (2 cm) corresponds to a map range of 10 km and 16 km, with scales of 5 km/cm and 8 km/cm respectively.

Through the above conversion, the gradient map 1 can display the map range equivalent to the original map 2 with a smaller map size by adjusting the adjustment of the display scale and the display information by the block 12, and present different levels on the same map. Map information and map range. The user can flexibly set the range of the original map 2 and the number of the sub-blocks 121 as needed. On the other hand, the conversion of the adjustment block 12 in the Y direction is similar to the conversion in the X direction, and no further description is made here.

It should be specially stated that the above versus The set values are only used to describe the contents of the embodiment, and the scope of the present invention cannot be limited thereto. In addition, the size and setting position of the reserved block 11 can also be designed to be set by the user, and is not limited to the foregoing. Furthermore, the size of each sub-block 121 ( ) can also be set to different values by the user, and is not limited to be identical. Further, the conversion ratio S _i and the scale of each sub-block 121 in this step are incremented from the inside to the outside, but may be sequentially decreased, and are not limited to the foregoing.

Since the adjustment block 12 is located in the peripheral area of the gradation map 1, it is not necessary to display the secondary road information. Therefore, referring to FIG. 3, steps S4 and S5 are performed: after the secondary road information of the adjustment block 12 is deleted, the final gradation is displayed. Layer map 1.

An embodiment in which the gradient map 1 is applied to a navigation device 3 will be described below with reference to FIG. 4 and related illustrations.

The navigation device 3 includes a processing module 31, a storage module 32, a wireless module 33, and a display module 34. The storage module 32 is electrically connected to the processing module 31 and stores information of the plurality of original maps 2. The wireless module 33 is electrically connected to the processing module 31 and receives a wireless positioning signal 15 for transmission to the processing module 31.

After the processing module 31 receives an adjustment parameter information and an original map 2 information, the original map 2 is converted into a corresponding gradient map 1 according to the foregoing steps S1 to S4, and the gradient map 1 is displayed on the display mode. Group 34, and the map position displayed by the gradient map 1 is adjusted according to the wireless positioning signal 15.

Therefore, by adjusting the parameter or the size setting of the original map 2, the user can present the gradient map 1 of the corresponding specification in the display module 34, and can guide the direction of the vehicle traveling by the navigation function on the gradient map 1. . When the navigation function is executed, the vehicle can be positioned in the reserved block 11 of the gradient map 1 to let the user know the map details such as the main road information and the secondary road information in the vicinity of the vehicle. In addition, the adjustment block 12 provides main road information far from the vehicle, and the main road information and the main road information in the reserved block 11 are connected to each other, which can be used as a reference for the vehicle to travel, and the convenience of driving is enhanced. Sex.

Next, a second preferred embodiment of the progressive map 1 for navigation of the present invention will be described with reference to Figs. 5 and 6 . In the second embodiment, the gradient map 1 also includes a reserved block 11 and an adjustment block 12 surrounding the reserved block 11, but the two embodiments differ in that the gradient map 1 is generated differently. .

Specifically, in the present embodiment, an original map 2 is bent to form a deflected original map 2, and the curvature of the bend is determined by the adjustment parameters. Next, the deflected original map 2 is projected onto a virtual plane 15, and the secondary road information in the adjustment block 12 is deleted to present the gradient map 1. In this way, the reserved block 11 corresponding to the flexed portion will have a smaller scale, while the peripheral reserved block 11 region will have a larger scale. Further, since the reserved block 11 is set to be located at the center of symmetry of the gradation map 1, the original map 2 must be deflected from the center thereof. However, according to the display position of the reserved block 11, the original map 2 can be flexed from different parts, and the curvature of the bend can also be adjusted according to the scale of the gradient map 1 required, and is not limited to the contents disclosed herein.

In particular, since the adjustment block 12 is generated by bending the original map 2, the adjustment parameter information only needs to include an adjustment parameter for determining the bending curvature, and does not need to include A block number parameter that determines the number of sub-blocks 121.

In summary, the gradient map 1 generated by the above two methods includes two parts of the reserved block 11 and the adjustment block 12, and the reserved block 11 displays detailed main road information and secondary road information, and the adjustment block 12 displays The wide range of major road information has the advantage of a wide display range and detailed information display. In addition, since the reserved block 11 and the main road of the adjustment block 12 are Interconnecting can increase the intuitiveness of the map and improve the smoothness of driving.

The above is only the preferred embodiment of the present invention, and the scope of the invention is not limited thereto, that is, the simple equivalent changes and modifications made by the scope of the invention and the description of the invention are All remain within the scope of the invention patent.

1‧‧‧ Gradient map

11‧‧‧ Reserved block

12‧‧‧Adjustment block

121‧‧‧Sub-block

13‧‧‧ major roads

14‧‧‧ secondary roads

15‧‧‧Virtual plane

2‧‧‧ original map

3‧‧‧Navigation device

31‧‧‧Processing module

32‧‧‧ storage module

33‧‧‧Wireless Module

34‧‧‧Display module

S1~S5‧‧‧ Process steps

1 is a schematic view showing a first preferred embodiment of a progressive map for navigation according to the present invention; FIG. 2 is a schematic diagram of generating the gradient map; FIG. 3 is a flow chart for generating the gradient map; FIG. 5 is a schematic view showing a second preferred embodiment of the progressive map for navigation according to the present invention; and FIG. 6 is a schematic diagram showing the fade in the second embodiment. How the layer map is generated.

1‧‧‧ Gradient map

11‧‧‧ Reserved block

12‧‧‧Adjustment block

13‧‧‧ major roads

14‧‧‧ secondary roads

Claims (16)

A gradation map for navigation, converted from an original map, the original map showing most major road information and most secondary road information, the gradual map includes: a reserved block, showing part of the main road information and part of the original map a secondary road information; and an adjustment block, the reserved block is surrounded by the main road information of the original map that is not found in the reserved block, and the scale of the adjustment block is larger than the reserved block, wherein At least one main road of the reserved block is connected to a corresponding main road in the adjustment block. The gradation map for navigation according to claim 1, wherein the gradation map presents a map range equivalent to the original map and the size is smaller than the original map, and the scale of the reserved block in the gradation map It is equivalent to the original map, and the scale of the adjustment block is larger than the original map. The navigation gradient map according to claim 1, wherein the adjustment block comprises a plurality of sub-blocks which are gradually distributed from inside to outside and surround the reserved block, and the sub-areas The scale of the block is incremented from the inside out. The gradation map for navigation according to claim 1, wherein the reserved block is located at a symmetry center of the gradation map, and the adjustment block includes a plurality of gradual distributions from the inside to the outside and the reservation The block surrounds the sub-blocks. A method for generating a gradient map for navigation includes the following steps: (A) receiving an original map and adjusting a ratio of the original map The adjustment parameter information of the ruler, the original map presents most of the main road information and most of the secondary road information; (B) converts the original map into a gradient map according to the adjustment parameter information, the gradient map includes a reserved block And an adjustment block surrounding the reserved block, the reserved block presents part of the main road information and part of the secondary road information of the original map and the scale thereof is smaller than the scale of the adjustment block, and the adjustment block presents the The main road information of the reserved block is not found in the original map, and at least one main road in the adjusted block is connected to the corresponding main road in the reserved block; and (C) the gradient map is displayed. The method for generating a gradient map for navigation according to claim 5, wherein the gradient map presents a map range equivalent to the original map and the size is smaller than the original map, and the reserved area is in the gradient map. The scale of the block is equivalent to the original map, and the scale of the adjusted block is larger than the original map. According to the method for generating a gradient map for navigation according to claim 5, wherein the main road information of the original map and the secondary road information in the step (B) are respectively converted to the reserved block and The adjustment block, and the generating method further comprises a step (D) between the step (B) and the step (C): deleting the secondary road information in the adjustment block of the gradient map. The method for generating a gradient map for navigation according to claim 5, wherein converting the original map to the gradient map in step (B) comprises the following substeps: (B1) bending the original map to form a deflected original map, and the curvature of the original map is determined by the adjustment parameter; (B2) projecting the original map of the deflection to a virtual plane, The virtual plane presents the gradient map. The method for generating a gradient map for navigation according to claim 5, wherein the adjustment block comprises a plurality of sub-blocks which are gradually distributed from the inside to the outside and surround the reserved block, and the like The number of sub-blocks corresponds to the parameter adjustment, and the scale of the sub-blocks is incremented from the inside to the outside according to the adjustment parameter. The method for generating a gradient map for navigation according to claim 10, wherein the scale of the sub-blocks is further increased from the inside to the outside according to the size of the original map and the size of the adjustment block. The method for generating a gradient map according to claim 5, wherein the reserved block is located at a center of symmetry of the gradient map, and the adjustment block includes a plurality of layers that are gradually distributed from the inside to the outside and The reserved block surrounds the sub-blocks therein. A navigation device includes a processing module; a storage module electrically connected to the processing module and storing a plurality of original map information; and a wireless module electrically connected to the processing module and receiving a wireless positioning signal for transmission And the processing module is electrically connected to the processing module, wherein the processing module receives an adjustment parameter information and displays The original road map of most major road information and most of the secondary road information is converted into a corresponding gradient map, and the gradient map is displayed on the display module, and the map displayed by the gradient map is adjusted according to the wireless positioning signal. Position: the gradient map includes a reserved block and an adjusted block surrounding the reserved block, the reserved block presents part of the main road information and part of the secondary road information of the original map and the scale is smaller than the adjusted block The scale block, the adjustment block presents the main road information in the original map that is different from the reserved block, and at least one main road in the adjustment block is connected to the corresponding main road in the reserved block. The navigation device of claim 12, wherein the gradient map presents a map range equivalent to the original map and is smaller in size than the original map, wherein the scale of the reserved block is equivalent to the scale in the gradient map. The original map, and the scale of the adjustment block is larger than the original map. The navigation device of claim 12, wherein the adjustment block comprises a plurality of sub-blocks which are gradually distributed from the inside to the outside and surround the reserved block, the number of the sub-blocks The parameters should be adjusted and the scale of the sub-blocks is incremented from the inside out according to the adjustment parameters. The navigation device of claim 14, wherein the scale of the sub-blocks is further increased from the inside to the outside according to the size of the original map and the size of the adjusted block. The navigation device of claim 12, wherein the reserved block is located at a center of symmetry of the gradation map, and the adjustment block comprises a plurality of gradual distributions from inside to outside and surrounding the reserved block Among them are sub-blocks.