JPS59193511A - Recording system of picture information - Google Patents

Abstract

PURPOSE:To display an optional part of the planar information such as a map, etc. and at the same time to shift freely the display position without increasing the information record/transmission rate of a disk having concentric or spiral information store tracks. CONSTITUTION:The 1st information store part has plural pairs of adjacent tracks (k) which store a piece of square picture information among those obtained by dividing the planar picture information, e.g., a map 1, etc. into (NXM) units of square gatherings. The 2nd information store part has (NXn) units of tracks in the track crossing direction as well as toward the track circumference at (MX theta) angle, where the (MXtheta) angle <=360 is satisfied. In the 2nd information store part, a piece of square picture information is stored in a fan-shaped area of (n) track of theta angle. This information is recorded so as to hold the same relative relation with the overall picture information. In other words, a disk 2 contains a map different from the map 1 at parts M1-M4 in the same recording pattern. The part M4, for example, is divided into six areas A-F. Thus an optional part of the planar information like a map, etc. can be displayed. Furthermore the display position can be freely shifted without increasing the information record/transmission rate of the disk. Thus this method can be applied to a drive navigator, etc.

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Application) The present invention relates to a disk-shaped recording medium (hereinafter referred to as a disk), and particularly to a recording method suitable for recording image information such as a map.

(Background) Conventionally, as a method for recording image information on a disk, there is generally a method in which one frame of a video image is recorded on one track around the disk.

However, if this is digitized and recorded on a Dinuku, the transmission rate of the information is extremely high, making it difficult to obtain a moving image (28 screens/second or more).

Although it is suitable for handling temporally continuous images, it has the disadvantage that it is not suitable for displaying arbitrary parts of the map and gradually moving in free directions when used for areas etc.

(Objective) The object of the present invention is to provide a recording method that enables displaying any part of planar information such as a map and freely moving the display position without increasing the information recording transmission rate of the disk. is to provide.

(Summary) The present invention is characterized by a disc-shaped recording medium that has information storage trunks in a concentric or spiral shape and records planar image information, and the image information is stored in a set of NXM rectangles. A first information storage section that is divided and has a plurality of adjacent tracks that store one piece of image information of the rectangle; a second information storage section of rank NXn} in the direction;
In the second information storage section, one piece of image information of the rectangle is stored in a fan-shaped part of the rack at θ degrees n}, and recorded so as to maintain the same relative relationship as the entire image information.

In addition, other features include Nxψ degrees (
However, Nxψ degree (360 degrees), Mx in the trunk transverse direction
A third information storage section of the m track is provided, and the third information section stores the image information of the rectangle in the fan-shaped part of the 9 degree m track, and has the same relative relationship as the whole of the image information. The information is recorded at a point rotated 90 degrees from the second information storage section so as to maintain the same.

(Embodiment) Hereinafter, a case will be described in which an embodiment of the present invention is applied to a device that stores digitized map information on a disk and displays it on an image display via a Vanofa Memo IJk.

FIG. 1 shows the entire map 1 stored on the disk.

Map 1 is divided into 8 sections each from east to west and north to south, making a total of 64 rectangular small maps. Maps of each square are shown in D7 below.
According to the play, there are 1280 points from east to west and 800 points from north to south.
Each point is decomposed into digital information that is decomposed into three primary colors: R, G, and B.

FIGS. 2(a) and 2(b) show an embodiment of the present invention,
1 shows a pattern on a disc 2 on which the digitized information of the map 1 shown in FIG. 1 is recorded according to the invention.

The signal format on the disk 2 is such that the parts separated by synchronization signals are frames, and each frame contains 25 B (bytes)/frame of net information and an appropriate error detection and correction code (for example, CRC,
It has 6B (bytes) and 2B (bytes) of control address (for example, track number, etc.).

FIG. 3 shows a specific example of the signal format. In the figure, 3 is a synchronization signal, 4 is an A-D identification flag, 5 is an address control signal, 6 is image information, and 7 is error control information for the 4°5.6. Here, the address control signal 5 is information on the relative position of the image information that appears subsequently with respect to the overall view.

On this disk 2, a map different from map 1 is recorded in the M1 to M40 portions with the same recording pattern. As an example, considering the M4 part, the M4 part is
), it is divided into six areas A to F, and each area is configured as follows.

Area A: The entire map 1 on one screen (128X 3KB)
The information is stored as information, and 12 tracks corresponds to one screen.

B area: 48 (=
12×4) Track 1°C area°Map 1 divided into 8 equal parts east-west, north-south, and 768 (= 12×64) tracks recorded 964 screens.

D area 102 with the boundary line dividing map 1 into 8 equal parts as the center
18 of 49 screens centered on the intersection of the screen and the boundary line
12 (=12 mowing 51) tracks.

In the A-D area, one screen is recorded on 12 consecutive tracks.

On the other hand, in the E and F areas described below, one round is divided into 8, and 45
°, one screen is recorded using the fan-shaped part of 96 toranoku. Here, it takes 96 tracks to record one screen, which is 12 tracks per round in the above A-D area.
Whereas one screen was made up of a book, part E-F uses parts divided into eight parts, so it is 12 x 8-
It becomes 96 toranoku.

Area E: Scan each of the 64 divided areas shown in Figure 4 (a) (see Figure 1) from the northwest corner a1 to the east in the direction of the arrow, and scan each area at the southeast corner a3. This is recorded in the fan shape of the disk so that the screen is completed - as shown in FIG. 2(b). At this time, the map 1 is arranged so that the south ends a2 to a3 are the inner trunk and the north ends a and a4 are the outer tracks. Then, all 64 screens of map 1 are recorded in 768 trunks.

Area F: As shown in Figure 5 (,), each of the 64 divided maps is scanned in the direction of the arrow from the northeast corner A4 to the south, and each screen is completed at the southwest corner A2. This is recorded in both temperatures of the disk as shown in FIG. 5(b). At this time, the west ends a and a2 of the map 1 are arranged as inner tracks, and the ends a4 and a3 of the bundle are arranged as outer trunks. And the entire map 64
Record the screen to 768 trunk.

Therefore, the pattern of E and F on the disk 2 is as shown in FIG. 2(b). In other words, the north-south direction a l b l e l in Figure 1
dl...h are recorded in the E area in the radial direction, and in the F area in the circumferential direction.

A-F total tl'4176) Rank information is recorded.

Even if these four sets (total of 16,704) racks and the data for testing these four sets are recorded on the innermost trunk, this can be sufficiently realized using current optical discs.

The i111IgN information recording method of this embodiment is suitable for use in a display device for tracing a route along a road on a map rather than a drive navigator.

In this case, since there is a limit to the size of the display that displays the map, the player should always display his or her position near the center of the display and move the map north, south, east, and west.

At this time, it is important to be able to quickly find and display a map centered on your location, to be able to move freely north, south, east, west, and in a short time, and to be able to read information from the disk at a slow transmission rate. .

FIG. 6 shows an example of an image reproducing apparatus for Dinuk 2 recorded by the recording method of this embodiment.

In the figure, 11 is a recording medium, for example, a disc player that plays back the disc 2; 12 is a signal processing circuit that performs error correction and synchronization of signals read from the disc 2; This is the control circuit that basically controls the system.

Further, 14 is an address control device, 15 is a buffer memory for storing or reading information to be displayed on the display in units of dots at addresses output from the address control device 14, and 16 is a display.

The disc player 11 is equivalent to an optical player used for digital audio, and has a rotation speed of 36 degrees.
The player can freely access the directions r, p, m, and Tojinoku within 3 seconds. Therefore, the disk 2 is driven at a disk rotational speed of 6 r, p, s, and the code transmission rate is approximately 2.5 Mbi. This is fully achievable considering the optical digital audio recorders currently in use.

Display 16 is east-west (horizontal direction of display 16) 1280 points, north-south (vertical direction of display 16)
With a resolution of 800 points, each point is R (red), G (green), B (
Eight colors are expressed by mixing three colors (blue).

The display buffer memory 15 is a memory that stores information read out from the disk 2 at a low speed, and transmits and displays the information on the display 16 at a high speed. This buffer memory 5 has 1280 pixels for each R, G, and H screen.
The required capacity to display 800 points is 128KB (
It has a capacity of B (byte): 8 bits) x 3, and in addition to this, it has a capacity for specifically moving 11 screens in order to replace a part of the screen.

In the end, the capacity of the buffer memory 15 is (1280+16
0) Point X It is configured to have a capacity of (800+100) points×3. Here, the above-mentioned 160 points and 100 points are the capacities for moving the screen, and correspond to the east-west and north-south directions, respectively.

FIG. 7 shows the buffer memory 15. This memory 1
5 has 1440 x 900 points and has three layers corresponding to R (red), G (green), and B (blue).

It is assumed that a portion of area 17 of 1280×800 is initially read out for display. When moving the screen to the right, the information read from the disk 2 is read into the area 18a, and then the area 17 to be read for display is sequentially moved to the right. When the right end of the buffer memory 15 is reached, the area 18 read from Dinuk 2 is placed in the empty area 18b on the left.
Write the information following a. This is address control device 1
4, the right end of the area 17 is moved while being read from the left end of the memory 15. In this way, the buffer memory 15 can be moved vertically and horizontally in the same manner without increasing its capacity.

The operations are recommended in the following order.

(1) Choose one map from four different maps.

(2) As a result, a map based on information area A of the selected map is displayed. The operator inputs his or her own location information from among these. Then, the map is moved to one of the maps in information area B, which has a scale of 8 times, and this is displayed.

(3) Similar to (2) above, the operator inputs his/her own position on the map according to information area B. As a result, the map moves to an information area C or D having a scale of 8 times, and among these, the map with the user's position closest to the center is displayed.

(4) Next, move to the nearest track on the same screen as in (3) above for territory ME or F.

(5) From here, when you move east (or west) on the map, move the display while loading the image in the direction you are moving from the H1F area to the buffer memory 15.

(6) When moving north (or south), move to area E.
The display is moved while reading the image in the moving direction to the backup memory 15.

When moving to the northeast, southwest, etc., use (5) and (6) above.
) are executed alternately.

FIG. 8 shows another embodiment of the invention. The difference between this embodiment and the embodiment shown in FIG. 2(b) is that FIG.
), it is clear that only the E and F regions are different. In this example, the F area is not located on the circumference outside the E area, but the circumference is divided into two, and the E area is placed on one side.
Area F is recorded on the other side.

According to this embodiment, east-west and north-south, that is, area E and area F
When scanning areas alternately, there may be no need for toranok jumps, so there is an advantage that access is stochastically faster.

A feature of the image information recording method of the present invention is that the screen for screen inspection is recorded on continuous tracks. In addition, when running this and displaying it on the display,
It takes about 3 seconds (access across tracks) to rewrite the buffer memory 15 in 2 seconds and move from area A to area B and from area B to area C.

While displaying the map based on information area C, the changes from there are based on the information from areas F and E, and each time it goes around, about 106 out of 1280 lines in the east-west direction and about 800 out of 800 lines in the north-south direction are displayed. 66 lines of face image redrawing information can be obtained. Therefore, it is possible to move the screen in a short time with a limited transmission rate.

As described above, by using the present invention, it is possible to realize an ever-changing road map using an optical disk with a transmission rate of about 2 Mbps and about 250 maps having a diameter of about 12 crR.

The above method can be used as a recording method for a device that scans the screen while displaying continuous two-dimensional image information other than a map. In addition to optical disks, the medium can also be electrostatic or magnetic disks.

(Effects) According to the present invention, any part of planar information such as a map can be displayed. The display position can still be moved freely without increasing the information recording and transmission rate of the disc. Therefore, the present invention is suitable for use in drive navigators and the like.

[Brief explanation of drawings]

FIG. 1 is an explanatory diagram of a divided map stored on a disc according to the present invention, FIG. 2(a) is a schematic diagram of an information pattern stored on a disc according to the present invention, and FIG. 2(b) is a diagram according to the present invention. A detailed explanatory diagram of the information pattern stored on the disk according to one embodiment.
Figures (a) and (b) are explanatory diagrams showing how to store area E in Figure 2 (b), and Figures 5 (a) and (b) are illustrations of how to store area E in Figure 2 (b).
FIG. 6 is a block diagram of a playback device for a disc recorded according to the present invention.
FIG. 7 is a conceptual diagram of a buffer memory, and FIG. 8 is a detailed explanatory diagram of information patterns stored on a disk according to another embodiment of the present invention. ■... Map, 2... Disc, 11... Disc player, 12... Signal processing circuit, 13... Control circuit, 14... Address control device, 15-... Buffer memory, 16 ...Deine Gray's agent Patent attorney Hiragi Michi Hitoga Ko [Megami 1;

Claims (8)

[Claims] (1) A disc-shaped recording medium having concentric or spiral information storage tracks and recording planar image information,
First information that divides the image information into a set of NXM squares (where N and M are positive integers a) and has multiple sets of adjacent tracks that store one piece of image information of the square. Storage area and trunk circumferential direction KMXθ degrees (however, M×θ degrees ≦
360 degrees), N An image information recording method 0 characterized in that one rectangular piece of image information is stored and recorded so as to maintain the same relative relationship with the entire image information. (2) The patented type characterized in that the information storage section of the tJ1 includes an MXNXk) rack in which the entire image information is stored. (3) The first information storage section includes a plurality of tracks in which rectangular drawing information including the NXM dividing line is stored. Image information recording method. (4) The image information recording system according to claim 3, wherein the first information storage section includes a plurality of tracks obtained by dividing the image information at different magnifications. (5) A disk-shaped recording medium that has information storage trunks in a concentric or spiral shape and records planar image information,
The image information is divided into a set of NXM rectangles, and a first information storage section has a plurality of adjacent tracks for storing one image information of the rectangle, and M×θ in the circumferential direction of the toranok.
degrees (however, M x θ degrees ≦ 360 degrees) N x n in the track transverse direction Mxm track (where m is a positive integer)
The second information storage section stores one piece of image information of the rectangle in a fan-shaped part of 0 degree n track, and has the same relative relationship as the entire image information. The image information of the rectangle is stored in the fan-shaped part of the 9 degree m trunk in the third information section, and the image information of the rectangle is stored so as to maintain the same relative relationship as the whole of the image information, and The second information storage section is an image information recording method characterized by being recorded by rotating it by 90 degrees. (6) The patented type characterized in that the first information storage section includes a MxNxk) rack in which the entire image information is stored. (7) The image according to claim 5, wherein the first information storage section includes a plurality of tracks in which rectangular image information including the NXM dividing line is stored. Information recording method. (8) The image information recording system according to claim 6, wherein the first information storage section includes a plurality of sets of k} racks in which the image information is divided at different magnifications.