JP2007088694A - Display control apparatus - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To attain a PinP (Picture In Picture) display without degrading the visibility of an object being an important display part of a master screen. <P>SOLUTION: The display control apparatus capable of displaying a plurality of different video images as the master screen and slave screens includes a video position adjustment means 170 for controlling a display form of the slave screens depending on results of detecting overlaps between the slave screens and the object with positional information included in the master screen. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a display control apparatus capable of PinP display of a plurality of different videos as a parent screen and a child screen.

  2. Description of the Related Art Conventionally, a display control apparatus that can display a plurality of videos with different sources in a display area of a monitor has become widespread. One of them is a video display technique called Picture In Picture (PinP), in which a parent screen and a child screen are displayed in a superimposed manner (see, for example, Patent Document 1).

For example, when a TV channel signal is displayed as a second video while playing a DVD-VIDEO video as the first video, a second video with a reduced size is superimposed on one of the four corners of the first video. Arrangement is possible. In such a display control apparatus capable of PinP, the user can view two or more types of images simultaneously on one monitor.
JP-A-60-257682, page 1 to page 2

  FIG. 15 is a diagram schematically illustrating a two-screen display example in a conventional display control apparatus. An optical disk video 1510 is displayed as a parent screen, and an object 1520 having position information recorded on the optical disk is displayed on the parent screen. Further, a child screen 1530 is displayed superimposed on the parent screen.

  However, since the child screen is displayed, the parent screen displayed at the bottom of the child screen is shielded and cannot be seen. As shown in the figure, when the sub-screen is superimposed on the menu (highlight object) on the menu screen, it particularly hinders visual recognition. That is, in the conventional display control device capable of PinP, there is a problem that visibility may be impaired when an important display portion of the parent screen is blocked by displaying the child screen.

  It is an object of the present invention to provide a display control apparatus that can perform PinP display without reducing the visibility of an object that is an important display portion of a parent screen.

  The display control apparatus of the present invention is a display control apparatus capable of displaying a plurality of different videos as a main screen and a sub screen, and detects an overlap between an object having position information included in the main screen and the sub screen. Detection means and control means for controlling the display form of the sub-screen according to the detection result. According to this configuration, it is possible to avoid a decrease in the visibility of the object by controlling the display form of the small screen.

  In the present invention, the control means controls the display form of the child screen every time the display position of the object changes. According to this configuration, it is possible to dynamically control the display form of the sub-screen according to the change in the display position of the object.

  In the present invention, the control means sets a position where the object and the child screen do not overlap as a display position of the child screen. According to this configuration, since there is no overlap between the object and the child screen, the visibility of the object is not impaired.

  In the present invention, the control means sets the position where the overlap between the object and the child screen is the smallest as the display position of the child screen. According to this configuration, it is possible to minimize the area of the object shielded by the child screen.

  In the present invention, the control means reduces the size of the child screen so that the object and the child screen do not overlap. According to this configuration, the overlap between the object and the child screen can be eliminated by reducing the child screen.

  In the present invention, the control means adjusts display transparency of the small screen. According to this configuration, the object in the background of the child screen can be visually recognized.

  In the present invention, the control means erases the child screen. According to this configuration, overlapping of objects is eliminated by deleting the child screen.

  In the present invention, the control means displays a notice of the start of display mode control as an on-screen display. According to this configuration, it is possible to recognize the start of control of the display mode of the sub screen.

  In the present invention, the control means starts control of the display mode after confirming whether or not the control of the display mode is necessary as an on-screen display. According to this configuration, it is possible to select whether to control the display mode of the sub-screen.

  According to the present invention, it is possible to avoid a reduction in the visibility of an object by controlling the display form of a small screen.

  Hereinafter, a display control apparatus according to an embodiment of the present invention will be described with reference to the accompanying drawings. In the following embodiments, the highlight of an optical disc (DVD-VIDEO) will be described as an example of an object having position information.

  FIG. 1 is a block diagram showing a configuration of a display control apparatus according to Embodiment 1 of the present invention. The display control apparatus includes a reading unit 110 that converts information in the optical disc 100 into an electrical signal, a management information storage unit 120 that stores management information related to an object having position information in the optical disc 100 read by the reading unit 110 in the memory 125, First video reproduction means 130 for decoding the video information in the optical disc 100 read by the reading means 110 into a video signal, video signal acquisition means 140 for acquiring another video signal to be displayed on the sub-screen, and video signal acquisition means 140 A second video reproduction unit 150 that reproduces the video signal acquired in step S3, and a PIP synthesis unit 160 that synthesizes the two reproduced videos of the main screen and the sub-screen and displays them on the video display device 190.

  The PIP synthesizing means 160 is a video position adjusting means 170 for adjusting and controlling the display form of the video from the second video reproducing means on the monitor of the video display device 190, and a video synthesizing display means for synthesizing the first video and the second video. 180 included.

  When the video data read from the optical disc 100 includes a highlight object having position information, the management information storage unit 120 acquires the position information of the highlight object and stores it in the memory 125.

  FIG. 2 is a diagram schematically illustrating a data configuration example of the optical disc. The video data VOBU200 held by the DVD-VIDEO includes an information group PCI205 for controlling the playback of the VOBU200. Further, the PCI205 records an information group HLI210 of a highlight object that is an object included in the playback video. Yes.

  In the highlight information HLI 210, attribute information of each highlight object, which is an object in the video, is recorded, and the button information table BTNIT220 in the HLI 210 includes a button information table 230 (position information of individual highlight objects). For example, BTNI # 1).

  Information regarding one highlight object is recorded in the BTNI 230, and the button position information BTN_POSI 240 in the BTNI 230 indicates the display position of the highlight on the parent screen. The highlight object display position when the upper left corner of the parent screen is the coordinate (0, 0) is the start coordinate (start X coordinate 260, start Y coordinate 280), end coordinate (end X coordinate 270, end Y coordinate 290). Indicated by As described above, the position information related to the object on the parent screen is stored in the management information storage unit 120 as management information.

  FIG. 3 is a flowchart showing a processing procedure of the position information acquisition operation of the display control apparatus according to Embodiment 1 of the present invention. The management information storage unit 120 acquires the PCI 205 from the VOBU 200 read by the reading unit 110 (step S300). Next, the HLI 210 in the PCI 205 is acquired (step S310), the presence / absence of the highlight information HLI is confirmed (step S320), and if a highlight object exists, the process proceeds to the subsequent position information acquisition process. On the other hand, if there is no highlight object, the process ends.

  When the highlight object exists, the management information storage unit 120 acquires the BTNIT 220 in the HLI 210 (Step S330), and acquires the BTNI (for example, BTNI1 # 230) of the specified highlight from the BTNIT 220 (Step S340). Furthermore, BTN_POSI 240 is acquired from the acquired BTNI (step S350), and the start X coordinate, start Y coordinate, end X coordinate, and end Y coordinate are acquired from BTN_POSI 240 (step S360). The acquired position information is stored in the memory 125 (step S370).

  By repeating the processing procedure from step S340 to step S370 as many times as necessary (step S380), all the position information of the highlight object displayed on the parent screen can be acquired.

  Next, a video display operation will be described. When the optical disc 100 is reproduced, the management information is read by the reading unit 110 in the above-described procedure and stored in the memory 125 in the management information storage unit 120. The management information stored in the memory 125 is notified to the video position adjustment unit 170 in the PIP composition unit 160 so that the display position of the highlight object can be recognized.

  The video data read by the reading unit 110 is converted into a video signal by the first video reproduction unit 130 and transferred to the PIP synthesis unit 160. Video data that becomes a PinP child screen is acquired by the video acquisition unit 140, converted into a video signal by the second video reproduction unit 150, and transferred to the PIP synthesis unit 160.

  The transferred two video signals are synthesized by the video position adjustment unit 170 and the video synthesis display unit 180 in the PIP synthesis unit 160. The video signal synthesized by the video synthesis display unit 180 is outputted from the video output device 190.

  FIG. 4 is a flowchart showing the processing procedure of the video position adjustment operation of the display control apparatus according to Embodiment 1 of the present invention. The PIP compositing means 160 determines whether or not a highlight object exists (step S400). If a highlight object exists, the PIP composition unit 160 acquires highlight position information according to the procedure shown in the flowchart of FIG. 3 (step S410). ). The acquired position information is notified to the video composition display unit 180 (step S420).

  The PIP combining unit 160 determines whether or not a sub-screen is currently being displayed (step S430). If the sub-screen is being displayed, the PIP combining unit 160 acquires display position information of the sub-screen (step S440) and displays the sub-screen. It is determined whether or not the position and the display position of the highlight object overlap each other (step S450). When it is determined that the displays overlap, the video position adjusting unit 170 performs a process (step S460) for adjusting the display of the child screen. Details of the processing will be described later. If the sub-screen is not being displayed in step S430, or if it is determined in step S450 that the display positions do not overlap, the process ends.

  FIG. 5 is a flowchart showing a processing procedure for adjusting the display of the small screen in the display control apparatus according to Embodiment 1 of the present invention. The image position adjustment unit 170 searches for the arrangement position of the child screen that does not overlap with the highlight based on the acquired coordinate value (step S500). Whether or not there is an overlap is determined for the search result (step S510), and when a position where no overlap occurs is searched, the position is acquired as the display position of the child screen (step S520). On the other hand, if a position that does not overlap is not searched, the display position with the smallest overlap is acquired as the display position of the child screen (step S530).

  FIG. 6 is a diagram schematically showing a screen display example when performing the display adjustment processing for the sub-screen in the display control apparatus according to Embodiment 1 of the present invention. In the display of DVD-VIDEO, the child screen is arranged so that the child screen 605 is not superimposed on a highlight object (highlight A601, highlight B602, highlight C603) having position information recorded on the DVD-VIDEO. It has been adjusted.

  This is because the display start position 620 and the display end position 625 of the highlight A, the display start position 630 and the display end position 635 of the highlight B, and the coordinate value of the display start position 640 and the display end position 645 of the highlight C. This is realized by determining the arrangement so that the coordinate values of the display start position 650 and the display end position 655 of the sub-screen 605 are not included. On the other hand, for example, when the size of the child screen is large or when there are many highlights, if there is an overlap with the highlights no matter what arrangement is made, The display position of the screen is determined. In addition, as will be described later, other display adjustments may be performed, such as reducing the size of the child screen or increasing the transparency. Further, in some cases, the sub-screen can be erased so that display is not performed.

  In the example of FIG. 6, the arrangement of the child screens is adjusted based on the display start position 610 and the display end position 615 of the parent screen 600. However, it is not always necessary to use the parent screen as a reference. May be determined based on the physical position on the screen as a reference.

  According to the first embodiment, when a child screen is displayed with DVD-VIDEO as a parent screen, the child screen is arranged so that the child screen does not overlap the highlight of the parent screen or the overlapping portion is minimized. Since the adjustment is made, it is possible to prevent the visibility of an important display portion of the parent screen from being impaired by the display of the child screen.

  FIG. 7 is a flowchart showing a processing procedure for adjusting the display of a small screen in the display control apparatus according to Embodiment 2 of the present invention. Compared to the processing procedure of the first embodiment, when the position where no overlap occurs is not searched, the size of the child screen is reduced to a size that does not cause overlap (step S700). Since the configuration and other operations of the display control device are the same as those of the display control device of the first embodiment, description thereof is omitted.

  FIG. 8 is a diagram schematically showing a screen display example when performing a display adjustment process for a sub-screen in the display control apparatus according to Embodiment 2 of the present invention. The child screen 830 is reduced in size and displayed in a small size so as not to overlap with the highlight 820 of the parent screen 810.

  According to the second embodiment, when the child screen is displayed with DVD-VIDEO as the parent screen, the child screen size is adjusted so that the child screen does not overlap the highlight of the parent screen. It is possible to prevent the visibility of important display portions of the parent screen from being impaired.

  FIG. 9 is a flowchart showing a processing procedure for adjusting the display of the small screen in the display control apparatus according to Embodiment 3 of the present invention. Compared with the processing procedure of the first embodiment, when a position that does not overlap is not searched, the transparency in displaying the sub-screen is increased, that is, the display is made semi-transparent (step S900). The point is different. Since the configuration and other operations of the display control device are the same as those of the display control device of the first embodiment, description thereof is omitted.

  FIG. 10 is a diagram schematically showing a screen display example when performing a display adjustment process for a sub-screen in the display control apparatus according to Embodiment 3 of the present invention. Although the overlapping portion of the parent screen 1010 and the highlight 1020 is generated, the display content of the highlight can be visually recognized because the child screen 1030 is displayed in a translucent manner.

  According to the third embodiment, when a child screen is displayed with DVD-VIDEO as the parent screen, the child screen is displayed semi-transparently even if the child screen overlaps the highlight of the parent screen. Thus, it is possible to prevent the visibility of an important display portion of the parent screen from being impaired.

  FIG. 11 is a flowchart showing a processing procedure for adjusting the display of a small screen in the display control apparatus according to Embodiment 4 of the present invention. Compared with the processing procedure of the first embodiment, before the display adjustment of the small screen is performed, an on-screen display (OSD: OnScreenDisplay) indicating that is different (step S1100). Since the configuration and other operations of the display control device are the same as those of the display control device of the first embodiment, description thereof is omitted.

  FIG. 12 is a diagram schematically showing a screen display example when performing a display adjustment process for a sub-screen in the display control apparatus according to Embodiment 4 of the present invention. When the child screen overlaps the display of the object having the position information of the parent screen, the video position adjustment unit 170 displays in advance an on-screen display 1220 for adjusting the child screen display.

  According to the fourth embodiment, when a child screen is displayed with DVD-VIDEO as a parent screen, if the child screen overlaps the highlight of the parent screen, an on-screen display for adjusting the child screen display is displayed. Therefore, the user can recognize in advance that display adjustment of the small screen is performed.

  FIG. 13 is a flowchart showing a processing procedure for adjusting the display of a small screen in the display control apparatus according to Embodiment 5 of the present invention. Compared with the processing procedure of the first embodiment, before performing the display adjustment of the sub-screen, an on-screen display is displayed to ask the user whether or not to perform the display adjustment of the sub-screen (step S1300). Only when there is an instruction from, the display screen shifts to the sub-screen display adjustment (step S1310). Since the configuration and other operations of the display control device are the same as those of the display control device of the first embodiment, description thereof is omitted.

  FIG. 14 is a diagram schematically showing a screen display example when performing a display adjustment process for a child screen in the display control apparatus according to the fifth embodiment of the present invention. When an object having position information and a child screen are displayed in an overlapping manner, an on-screen display 1420 asking whether or not the child screen is to be arranged or adjusted in size is displayed, and an input from the user is awaited. Only when the user instructs, the arrangement adjustment of the sub-screen is performed.

  According to the fifth embodiment, when displaying a child screen with DVD-VIDEO as a parent screen, if the child screen overlaps the highlight of the parent screen, the on-screen display asking whether to adjust the child screen display or not. Since it is displayed, the user can select whether or not to adjust the display of the sub-screen.

  In the above embodiment, the case where two images are simultaneously displayed on the screen of the image display device has been described. However, the present invention can be similarly applied to a case where three or more images are simultaneously displayed. In the above-described embodiment, the case where DVD-VIDEO is played back as the parent screen has been described. However, not only optical discs typified by DVD, but also any video including position information such as digital television broadcasts as display contents. It goes without saying that the source is available.

  The display control apparatus according to the present invention has an effect that it is possible to avoid a reduction in visibility of an object by controlling a display form of a child screen, and a plurality of different videos are displayed as a PinP display as a parent screen and a child screen. It is useful as a possible display control device.

The block diagram which shows the structure of the display control apparatus in Embodiment 1 of this invention. The figure which shows typically the example of a data structure of the optical disk reproduced | regenerated with the display control apparatus in Embodiment 1 of this invention. The flowchart which shows the process sequence of position information acquisition operation | movement of the display control apparatus in Embodiment 1 of this invention. The flowchart which shows the process sequence of the image | video position adjustment operation | movement of the display control apparatus in Embodiment 1 of this invention. The flowchart which shows the process sequence for adjusting the display of a small screen of the display control apparatus in Embodiment 1 of this invention. The figure which shows typically the example of a screen display at the time of performing the display adjustment process of a small screen in the display control apparatus in Embodiment 1 of this invention. The flowchart which shows the process sequence for adjusting the display of a small screen of the display control apparatus in Embodiment 2 of this invention. The figure which shows typically the example of a screen display at the time of performing the display adjustment process of a small screen in the display control apparatus in Embodiment 2 of this invention. The flowchart which shows the process sequence for adjusting the display of a small screen of the display control apparatus in Embodiment 3 of this invention. The figure which shows typically the example of a screen display at the time of performing the display adjustment process of a small screen in the display control apparatus in Embodiment 3 of this invention. The flowchart which shows the process sequence for adjusting the display of a small screen of the display control apparatus in Embodiment 4 of this invention. The figure which shows typically the example of a screen display at the time of performing the display adjustment process of a small screen in the display control apparatus in Embodiment 4 of this invention. The flowchart which shows the process sequence for adjusting the display of a small screen of the display control apparatus in Embodiment 5 of this invention. The figure which shows typically the example of a screen display at the time of performing the display adjustment process of a small screen in the display control apparatus in Embodiment 5 of this invention. The figure which shows typically the example of a 2 screen display in the conventional display control apparatus.

Explanation of symbols

DESCRIPTION OF SYMBOLS 100 Optical disk 110 Reading means 120 Management information storage means 125 Memory 130 1st video reproduction means 140 Video signal acquisition means 150 2nd video reproduction means 160 PIP composition means 170 Video position adjustment means 180 Video composition display means 190 Video display apparatus 200 VOBU video Data 205 Playback control information PCI
210 Highlight Information HL
220 Button information table BTNIT
230 Button information table BTNI # 1
240 Button position information BTN_POSI
250 Button position information BTN_COLN
260 Start X coordinate 270 End X coordinate 280 Start Y coordinate 290 End Y coordinate

Claims (9)

A display control device capable of displaying a plurality of different images as a main screen and a sub-screen,
A display control apparatus comprising: a detecting unit that detects an overlap between an object having position information included in the parent screen and the child screen; and a control unit that controls a display form of the child screen according to a detection result.   The display control apparatus according to claim 1, wherein the control unit controls a display form of the child screen every time the display position of the object changes.   The display control apparatus according to claim 1, wherein the control unit sets a position where the object and the sub screen do not overlap as a display position of the sub screen.   The display control apparatus according to claim 1, wherein the control unit sets a position where the overlap between the object and the child screen is the smallest as a display position of the child screen.   The display control device according to claim 1, wherein the control unit reduces the size of the child screen so that the object does not overlap the child screen.   The display control apparatus according to claim 1, wherein the control unit adjusts display transparency of the sub-screen.   The display control apparatus according to claim 1, wherein the control unit erases the child screen.   The display control device according to claim 1, wherein the control unit displays a notice of start of display mode control as an on-screen display.   The display control device according to claim 1, wherein the control unit starts control of the display mode after confirming whether or not the control of the display mode is necessary as an on-screen display.

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