JP4532162B2 - Recording medium for display identification - Google Patents

Description

  The present invention relates to a display identification recording medium, and in particular, performs playback by connecting a recording medium playback device that can be played back by a progressive display method and an interlaced display method, and a display device that can be displayed by a progressive display method and an interlaced display method. In this case, the present invention relates to a display identification recording medium for identifying whether a progressive display method or an interlace display method is used.

  In recent years, various apparatuses that can reproduce and display not only an interlaced display method that is an interlaced scanning method but also a progressive display method that is a progressive scanning method have been sold.

  Various recording devices such as a CD-V player, a DVD player (DVD recorder), and a D-VHS video deck exist as recording medium playback devices that can be played back by a progressive display method and an interlace display method.

  In addition, various types of television receivers and displays including a liquid crystal display unit, a plasma display unit, a CRT display unit, and the like exist as display devices that can display in a progressive display method and an interlaced display method.

  Here, in the case of performing playback by connecting a recording medium playback device that can be played back by the progressive display method and the interlaced display method and a display device that can display by the progressive display method and the interlaced display method, a connection cable or a connection terminal Depending on the type, there are three types: only the interlace display method (no switching required), automatic switching between the interlace display method and the progressive display method, and manual switching between the interlace display method and the progressive display method.

  Therefore, in the case of the manual switching described above, either the interlaced display method or the progressive display method can be set by switching the display method of the recording medium reproducing device or switching the display method of the display device.

In such a case, in order to distinguish between the interlaced display method and the progressive display method, a dedicated identification circuit as described in Patent Document 1 below, a frequency counter, or the like is required.
JP 2001-103521 A (first page, FIG. 1)

  By the way, when the recording medium playback device and the display device are connected by the plurality of connection cables (connection terminals) described above, either the interlace display method or the progressive display method is selected by switching the input terminal of the display device. Settings may change.

  For this reason, although both the recording medium playback device and the display device are compatible with the progressive display method, due to the manual switching of the display method and the switching of the input terminal of the display device, the user May be displayed in an interlaced display mode without being noticed.

  And, in this way, when displaying in the interlaced display method even though it can be displayed in the progressive display method, the method of clearly identifying which display method is displayed at that time is No simple method exists other than using the identification device and the frequency counter described in Patent Document 1 described above.

  Although it is theoretically possible to clearly identify the display method if the horizontal scanning frequency of the horizontal scanning signal of the video signal flowing through the connection cable is measured with a frequency counter or the like, it is theoretically possible. It is not practical under the condition that the display device is in use.

  The present invention relates to a progressive display system or an interlace when a recording medium playback apparatus capable of reproducing by a progressive display system and an interlace display system is connected to a display apparatus capable of displaying by a progressive display system and an interlace display system. It is an object of the present invention to provide a display identification recording medium that can easily identify which display method is used for display.

The present invention as means for solving the above-described problems is as described in the following (1) to (8).
(1) The invention according to claim 1 is a case where playback is performed by connecting a recording medium playback device that can be played back by a progressive display method and an interlaced display method, and a display device that can be displayed by a progressive display method and an interlaced display method. In addition, a display identification recording medium for identifying whether a progressive display method or an interlace display method is used, and data for displaying a horizontal line in either an odd field or an even field Is a recording medium for display identification.

  In the present invention, data for displaying a horizontal line in either an odd field or an even field is recorded on a display identification recording medium, and this data is reproduced by an interlaced display method in a recording medium reproducing apparatus. In some cases, the data is displayed with a flicker on the display device side, but when this data is reproduced by the progressive display method in the recording medium reproducing device, the data is displayed with no flickering on the display device side.

  (2) The invention according to claim 2 is a case where playback is performed by connecting a recording medium playback device that can be played back by a progressive display method and an interlace display method, and a display device that can be displayed by a progressive display method and an interlace display method. In addition, a display identification recording medium for identifying whether the display is a progressive display method or an interlace display method, in either an odd field or an even field (a plurality of adjacent horizontal lines in the field). First data for displaying a horizontal line (composed of scanning lines) and a horizontal line composed of a plurality of horizontal scanning lines adjacent to each other in the odd field and the even field, Second data to be displayed at a position near the first data is recorded. A display identification recording medium according to symptoms.

  In the present invention, the first data for displaying a horizontal line in either the odd field or the even field, and a horizontal line composed of a plurality of horizontal scanning lines adjacent to each other in the odd field and the even field. Second data for displaying a direction line at a position in the vicinity of the first data is recorded on the recording medium for display identification, and when these data are reproduced by the interlaced display method, the first data When flickering occurs, the second data is displayed without flickering. On the other hand, when these data are played back in the progressive display mode, flickering occurs in both the first data and the second data. Displayed in a non-occurring state

  (3) The display identification record according to claim 2, wherein the first data and the second data are configured to be displayed at the same horizontal position. It is a medium.

  (4) The invention described in claim 4 is configured such that the first data and the second data are displayed in contact with each other at the same horizontal position. The display identification recording medium described.

  (5) The invention according to claim 5 is configured such that a plurality of sets are displayed in the horizontal direction with the first data and the second data as a set. A display identification recording medium according to claim 4.

  (6) The display identification record according to claim 2, wherein the first data and the second data are configured to be displayed at the same vertical position. It is a medium.

  (7) The invention according to claim 7 is configured such that the first data and the second data are displayed in contact with each other at the same vertical position. The display identification recording medium described.

(8) an invention according to claim 8, as the first data and the second data and a set, is configured to a plurality of sets in the vertical direction is displayed, claim 6 or, characterized in that A display identification recording medium according to claim 7 .

According to the present invention, the following effects can be obtained.
(1) In the first invention, when performing playback by connecting a recording medium playback device that can be played back by a progressive display method and an interlaced display method, and a display device that can be displayed by a progressive display method and an interlaced display method, Since data for displaying a horizontal line in either the odd field or the even field is recorded on the recording medium for display identification, flickering occurs when this data is reproduced in the interlaced display method. However, when this data is reproduced by the progressive display method, it is displayed in a state where no flicker occurs.

  As a result, depending on the appearance of the data for displaying horizontal lines, the recording medium playback device that can play back with the progressive display method and the interlace display method, and the display with the progressive display method and the interlace display method can be displayed. When playback is performed by connecting to a display device, it is possible to easily identify whether the display is a progressive display method or an interlace display method.

  (2) In the second invention, when performing playback by connecting a recording medium playback device that can be played back by a progressive display method and an interlaced display method, and a display device that can be displayed by a progressive display method and an interlaced display method, A horizontal line composed of a first data for displaying a horizontal line in either the odd field or the even field and a plurality of horizontal scanning lines adjacent to each other in the odd field and the even field. Since the second data to be displayed at a position near the first data is recorded on the display identification recording medium, when these data are reproduced by the interlaced display method, the first data flickers. As it occurs, the second data is displayed with no flickering, while these data are displayed in progress. When reproduced by blanking the display mode is displayed in a state that does not cause flicker at both the first data and the second data.

  As a result, a recording medium playback apparatus capable of playback in a progressive display system and an interlace display system, and a progressive display system, depending on the difference in appearance between the first data and the second data for displaying horizontal lines. In addition, when playback is performed by connecting a display device that can display in the interlaced display method, it is possible to easily identify whether the display is in the progressive display method or the interlaced display method.

  (3) In the third invention, the first data for displaying a horizontal line in either the odd field or the even field and a plurality of horizontal scanning lines adjacent to each other in the odd field and the even field And the second data for displaying the horizontal line constituted by the positions near the first data are displayed at the same horizontal position.

  As a result, recording that can be played back in the progressive display method and the interlaced display method due to the difference in appearance during playback when the first data and the second data for displaying the horizontal line are aligned in the horizontal direction. When playback is performed by connecting a media playback device and a display device that can display in progressive display mode or interlaced display mode, it can be easily identified whether it is displayed in progressive display mode or interlaced display mode. Become.

  (4) In the fourth invention, the first data for displaying a horizontal line in either the odd field or the even field and a plurality of horizontal scanning lines adjacent to each other in the odd field and the even field The second data for displaying the horizontal line constituted by the positions near the first data is displayed at the same horizontal position and in contact with each other.

  As a result, recording that can be played back in the progressive display method and the interlaced display method due to the difference in appearance during playback when the first data and the second data for displaying the horizontal line are adjacent in the horizontal direction. When playback is performed by connecting a media playback device and a display device that can display in progressive display mode or interlaced display mode, it can be easily identified whether it is displayed in progressive display mode or interlaced display mode. Become.

  (5) In the fifth invention, the first data for displaying a horizontal line in either the odd field or the even field, and a plurality of horizontal scanning lines adjacent to each other in the odd field and the even field A plurality of sets are displayed in the horizontal direction, with a set of second data for displaying the horizontal lines formed by the above-mentioned positions in the vicinity of the first data.

  As a result, the progressive display method and interlaced data are displayed depending on the difference in appearance during playback when the first data and the second data for displaying the horizontal line are set as a set, and multiple sets are arranged in the horizontal direction. Whether playback is performed using a progressive display method or an interlaced display method when playback is performed by connecting a recording medium playback device that can be played back by a display method and a display device that can display a progressive display method or an interlaced display method. Can be easily identified.

  (6) In the sixth invention, the first data for displaying a horizontal line in either the odd field or the even field and a plurality of horizontal scanning lines adjacent to each other in the odd field and the even field Are displayed at the same vertical position as the second data for displaying the horizontal line constituted by the positions near the first data.

  As a result, recording that can be played back in the progressive display method and the interlaced display method due to the difference in appearance during playback when the first data and the second data for displaying horizontal lines are aligned vertically. When playback is performed by connecting a media playback device and a display device that can display in progressive display mode or interlaced display mode, it can be easily identified whether it is displayed in progressive display mode or interlaced display mode. Become.

  (7) In the seventh invention, the first data for displaying a horizontal line in either the odd field or the even field, and a plurality of horizontal scanning lines adjacent to each other in the odd field and the even field The second data for displaying the horizontal line constituted by the positions near the first data is at the same vertical position and displayed in contact with each other.

  As a result, recording that can be played back in the progressive display method and the interlaced display method due to the difference in appearance during playback when the first data and the second data for displaying the horizontal line are adjacent in the vertical direction. When playback is performed by connecting a media playback device and a display device that can display in progressive display mode or interlaced display mode, it can be easily identified whether it is displayed in progressive display mode or interlaced display mode. Become.

  (8) In the eighth invention, the first data for displaying a horizontal line in either the odd field or the even field, and a plurality of horizontal scanning lines adjacent to each other in the odd field and the even field A plurality of sets are displayed in the vertical direction, with a set of second data for displaying the horizontal lines formed by the above-mentioned positions near the first data.

  As a result, the progressive display method and the interlaced are determined depending on the difference in appearance during playback when the first data and the second data for displaying the horizontal line are set as a set and a plurality of sets are arranged in the vertical direction. Whether playback is performed using a progressive display method or an interlaced display method when playback is performed by connecting a recording medium playback device that can be played back by a display method and a display device that can display a progressive display method or an interlaced display method. Can be easily identified.

  Embodiments of the present invention will be described below in detail with reference to the drawings. FIG. 2 is an explanatory diagram showing a specific configuration example of a reproduction / display system for reproducing and displaying the display identification recording medium of the present embodiment.

  In FIG. 2, reference numeral 1 denotes a display identification recording medium which is a characteristic part of the present embodiment. In this embodiment, an example of a read-only display identification recording medium is shown. However, the present embodiment is not limited to this, and the present embodiment is not limited to this and can be erased or rewritten. It is possible to apply.

  Reference numeral 10 denotes a playback apparatus capable of playing back the display identification recording medium 1 by a progressive display system and an interlace display system, and various playback apparatuses such as a CD-V player, a DVD player (DVD recorder), and a D-VHS video deck are applicable. . The playback apparatus 10 uses a composite video signal, a component (Y / Cr / Cb) video signal, and a component video signal accompanied by a control signal via the D terminal as a video signal reproduced from the display identification recording medium 1. It is possible to output. Further, it is assumed that the interlaced display method and the progressive display method can be switched according to the setting of the playback device 10.

  20 is a connection cable for connecting the playback device 10 and the display device 30 to transmit various video signals, 21 is a line cable for transmitting composite video signals, and 22 is for transmitting component (Y / Cr / Cb) video signals. A component video cable 23 is a D terminal cable for transmitting a component video signal together with a control signal via the D terminal. Here, the line cable 21 transmits an interlaced video signal, the component video cable 22 transmits an interlaced video signal or a progressive video signal, and the D terminal cable 23 performs an interlaced video signal. Any one of the video signals of the system and the progressive display system is automatically switched and transmitted.

  Reference numeral 30 denotes a display device that can display in a progressive display system and an interlaced display system, and includes various television receivers and displays that include a liquid crystal display unit, a plasma display unit, a CRT display unit, and the like. However, TV receivers and displays with a built-in function for forcibly converting interlaced display signals into progressive displays are excluded.

  The display device 30 converts a video signal reproduced from the display identification recording medium 1 by the reproduction device 10 into a composite video signal, a component (Y / Cr / Cb) video signal, It is possible to input a component video signal accompanied by a control signal via the D terminal. It is assumed that the video signal from any of the connection cables can be selected by setting (input switching) of the display device 30 when connected by these various connection cables.

  FIG. 1 is an explanatory diagram schematically showing data recorded on a display identification recording medium 1 which is a characteristic part of the present embodiment and a display state thereof. Here, the NTSC 525i interlaced display method and the 525p progressive display method are taken as specific examples.

In the present embodiment, data for displaying a horizontal line in either the odd field or the even field is recorded on the display identification recording medium 1.
As shown in FIG. 1A, a specific example is shown in which data for displaying a horizontal line (black short line on a white background) is recorded on the display identification recording medium 1 in an odd field. . Further, as shown in FIG. 1B, in the even field, data for displaying a horizontal line is not recorded on the display identification recording medium 1 (white background only).

  For this reason, when the data of FIGS. 1A and 1B recorded on the display identification recording medium 1 is reproduced by the reproduction apparatus 10, the setting on the reproduction apparatus 10 side or the input switching on the display apparatus 30 side is performed. When played back in an interlaced display mode, it is displayed with flickering. That is, the odd field data (262.5 scanning lines) in FIG. 1A and the even field data (262.5 scanning lines) in FIG. 1B are alternately displayed by interlaced scanning. 1 (c) As indicated by the wavy line, the horizontal data (black short line in the white background) in FIG. 1 (a) is displayed with flickering.

  On the other hand, when the data shown in FIGS. 1A and 1B recorded on the recording medium 1 for display identification is reproduced by the reproducing apparatus 10, the progressive setting is made by the setting on the reproducing apparatus 10 side or the input switching on the display apparatus 30 side. When reproduced in the display mode, the data in the horizontal direction (black short lines on a white background) is displayed in a state in which no flicker occurs. That is, frame data (525 scanning lines) is generated from the odd field data (262.5 scanning lines) in FIG. 1A and the even field data (262.5 scanning lines) in FIG. Since data is displayed frame by frame by sequential scanning, the horizontal data in FIG. 1A is displayed without flicker, as shown by the solid line in FIG.

  As a result, the playback device 10 that can play back in the progressive display method and the interlaced display method, and the playback that can be played back in the progressive display method and the interlaced display method, due to the difference in appearance when reproducing the data for displaying the horizontal line. When playback is performed with the display device 30 connected, it is possible to easily identify whether the display is in the progressive display method or the interlaced display method.

  In addition, when performing the display as described above, it is expected that the thickness and length of the horizontal short line suitable for identifying the presence or absence of flickering differ depending on the size and definition of the display screen of the display device 30. Is done. Therefore, as shown in FIG. 3, data for displaying a plurality of types of short lines with different thicknesses (number of adjacent scanning lines) and lengths is recorded in the display identification recording medium 1. Is desirable.

  Moreover, when performing the display as described above, it is expected that the position suitable for identifying the presence or absence of flickering varies depending on the size and definition of the display screen of the display device 30 and the distortion of each part of the screen. Therefore, as shown in FIG. 3, it is desirable to record data for displaying the same short line at a plurality of different positions on the display identification recording medium 1.

  In this way, if flicker is visually recognized at any position, it can be identified as the interlaced display method, and if no flicker is visually recognized at any position, it can be identified as the progressive display method.

  Moreover, as another display, it is also possible to make it like FIG.1 (e)-(h). That is, as shown in FIG. 1E, the first data (e1) and the second data (e2) for displaying the horizontal line (white short black line) in the odd field are the display identification recording medium. 1 is recorded. As shown in FIG. 1 (f), only the second data (f 2) for displaying the horizontal line (black short line on the white background) is recorded on the display identification recording medium 1 in the even field. .

  In other words, the first data for displaying a horizontal line in either the odd field or the even field, and the horizontal line in the odd field or even field are displayed at positions near the first data. The second data is recorded on the recording medium 1 for display identification.

  For this reason, when the data of FIGS. 1E and 1F recorded on the recording medium 1 for display identification is reproduced by the reproducing apparatus 10, the setting on the reproducing apparatus 10 side or the input switching on the display apparatus 30 side is performed. When played back in the interlaced display mode, the first data is displayed in a state where flickering occurs, and the second data is displayed in a state where flickering does not occur.

  That is, the odd field data (262.5 scanning line) in FIG. 1E and the even field data (262.5 scanning line) in FIG. 1F are alternately displayed by interlaced scanning. As indicated by the wavy line 1 (g), the horizontal data in FIG. 1E (the black short line on the white background: e1) is displayed with flickering for the first data, and the second data is shown in FIG. 1 (e) horizontal data (black short line on white background: e2) and horizontal data (f) on FIG. 1 (f) are displayed without flickering. As a result, the display is performed with a difference between the display of the first data and the display of the second data.

  On the other hand, when the data shown in FIGS. 1E and 1F recorded on the display identification recording medium 1 is reproduced by the reproducing apparatus 10, the progressive setting is made by the setting on the reproducing apparatus 10 side or the input switching on the display apparatus 30 side. When played back by the display method, both the first data and the second data are displayed without flickering.

  That is, frame data (525 scanning lines) is generated from the odd field data (262.5 scanning lines) in FIG. 1E and the even field data (262.5 scanning lines) in FIG. Since data is displayed frame by frame by sequential scanning, the horizontal data in FIGS. 1E and 1F is displayed in a state where there is no flicker, as shown by the solid line in FIG. As a result, the display is performed in a state where there is no difference between the display of the first data and the display of the second data.

  As a result, playback is possible in progressive display mode and interlaced display mode, depending on the difference in appearance between the first data and second data for displaying horizontal lines, or whether the first data flickers. When the playback device 10 is connected to the display device 30 that can play back in the progressive display method and the interlaced display method, it can be easily identified whether the display is in the progressive display method or the interlaced display method. It becomes like this.

  Furthermore, it is also desirable from the viewpoint of facilitating identification that the short lines based on the first data and the short lines based on the second data are displayed at the same horizontal position. That is, as shown in FIG. 4, the comparison is due to the difference in appearance during reproduction in a state where the short lines of the first data and the short lines of the second data for displaying the horizontal line are aligned in the horizontal direction. Progressive display method or interlaced when playback is performed by connecting a recording medium playback device that can be played back with the progressive display method and the interlaced display method and a display device that can play back with the progressive display method and the interlaced display method. It becomes possible to easily identify which display method is used for display. It should be noted that they may be at the same horizontal position but apart from each other. However, if they are adjacent to each other, it is desirable that the difference in appearance becomes clearer.

  Also in the case where the display as shown in FIG. 4 is performed, the thickness and length of the horizontal short line suitable for identifying the presence or absence of flickering are different depending on the size and definition of the display screen of the display device 30. Expected to be different. Therefore, as in the case of FIG. 3, data for displaying a plurality of types of short lines with different thicknesses (number of adjacent scanning lines) and lengths is recorded on the display identification recording medium 1. It is desirable.

  In the case of performing the display as shown in FIG. 4 described above, the position suitable for identifying the presence or absence of flicker may differ depending on the size and definition of the display screen of the display device 30 and the distortion of each part of the screen. is expected. Therefore, as in the case of FIG. 3, it is desirable to record data for displaying the same short line at a plurality of different positions on the display identification recording medium 1.

  In this way, if the flicker or the difference between the first and second data is visually recognized at any position, it can be identified as the interlace display method, and the flicker or the difference between the first and second data can be identified at any position. If is not visually recognized, it can be identified as a progressive display method.

  Furthermore, it is also desirable from the viewpoint of facilitating identification that the short lines based on the first data and the short lines based on the second data are displayed at the same vertical position. That is, as shown in FIG. 5, the comparison is due to the difference in appearance during playback in the state where the short line of the first data and the short line of the second data for displaying the horizontal line are aligned in the vertical direction. Progressive display method or interlaced when playback is performed by connecting a recording medium playback device that can be played back with the progressive display method and the interlaced display method and a display device that can play back with the progressive display method and the interlaced display method. It becomes possible to easily identify which display method is used for display. Note that the horizontal short lines of the first data and the second data may be at the same vertical position but apart from each other, but if they are adjacent to each other, it is desirable that the difference in appearance becomes clearer.

  Also in the case where the display as shown in FIG. 5 is performed, the thickness and length of the horizontal short lines suitable for identifying the presence or absence of flickering are different depending on the size and definition of the display screen of the display device 30. Expected to be different. Therefore, as in the case of FIG. 3, data for displaying a plurality of types of short lines with different thicknesses (number of adjacent scanning lines) and lengths is recorded on the display identification recording medium 1. It is desirable.

  Further, even when the display as shown in FIG. 5 is performed, the position suitable for identifying the presence or absence of flicker may differ depending on the size and definition of the display screen of the display device 30 and the distortion of each part of the screen. is expected. Therefore, as in the case of FIG. 3, it is desirable to record data for displaying the same short line at a plurality of different positions on the display identification recording medium 1.

  In this way, if the flicker or the difference between the first and second data is visually recognized at any position, it can be identified as the interlace display method, and the flicker or the difference between the first and second data can be identified at any position. If is not visually recognized, it can be identified as a progressive display method.

  In the above description, a specific example is shown in which a black short line is displayed on a white background to determine flicker, but the present invention is not limited to this. In other words, flicker may be determined by displaying a white short line in black.

  In the above description, the case of the NTSC video signal has been described as a specific example, but it is possible to obtain a good effect by applying the present embodiment to video signals of various systems such as PAL and SECAM. is there.

  The display identification recording medium to which the present embodiment can be applied is a recording medium such as a DVD disk, and is not limited to a read-only type, a rewritable type, or a write-once type. Further, it may be a D-VHS video tape, a semiconductor memory, a hard disk device, or the like.

It is explanatory drawing which shows the mode of the data recorded on the recording medium for display identification which is embodiment of this invention, and the mode of a display. It is a block diagram which shows the structure of the system which produces the recording medium for display identification which is embodiment of this invention. It is explanatory drawing which shows the mode of the data recorded on the recording medium for display identification which is embodiment of this invention, and the mode of a display. It is explanatory drawing which shows the mode of the data recorded on the recording medium for display identification which is embodiment of this invention, and the mode of a display. It is explanatory drawing which shows the mode of the data recorded on the recording medium for display identification which is embodiment of this invention, and the mode of a display.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Display identification recording medium 10 Playback apparatus 20 Connection cable 30 Display apparatus

Claims (8)

When playback is performed by connecting a recording medium playback device that can play back with the progressive display method and the interlaced display method, and a display device that can display with the progressive display method and the interlaced display method, either the progressive display method or the interlaced display method. A display identification recording medium for identifying whether or not
Recorded data for displaying horizontal lines in either odd or even fields,
A display identification recording medium characterized by the above. When playback is performed by connecting a recording medium playback device that can play back with the progressive display method or the interlaced display method, and a display device that can display with the progressive display method or the interlaced display method, either the progressive display method or the interlaced display method. A display identification recording medium for identifying whether or not
First data for displaying a horizontal line (consisting of a plurality of adjacent horizontal scan lines in the field) in either an odd field or an even field;
Second data for displaying a horizontal line composed of a plurality of horizontal scanning lines adjacent to each other in an odd field and an even field at a position near the first data;
A recording medium for display identification, characterized in that is recorded. The first data and the second data are configured to be displayed at the same horizontal position.
The display identification recording medium according to claim 2, wherein: The first data and the second data are configured to be displayed in contact with each other at the same horizontal position.
The display identification recording medium according to claim 2, wherein: The first data and the second data are set as one set, and a plurality of sets are displayed.
5. The display identification recording medium according to claim 3, wherein the recording medium is a display identification recording medium. The first data and the second data are configured to be displayed at the same vertical position.
The display identification recording medium according to claim 2, wherein: The first data and the second data are configured to be displayed in contact with each other at the same vertical position.
The display identification recording medium according to claim 2, wherein: The first data and the second data are set as a set, and a plurality of sets are displayed.
Claim 6 or claim 7 display identification recording medium, wherein the.

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