JP2005136704A - Display control apparatus and television receiver - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a display control apparatus capable of easily operating switching of a television image from one screen display into two-screen display without the need for a remote controller provided with a switching exclusive button. <P>SOLUTION: The display control apparatus is provided with a main control section 19 for executing switching of one screen display and two-screen display and a reception section 18 for receiving an operation signal So outputted from the remote controller with a plurality of channel buttons respectively corresponding to channels at operation of a channel button, and when the reception section 18 receives the operation signal So corresponding to the channel button of a channel displayed while one image is displayed, the main control section 19 displays the television image of the channel and a television image of a channel having been displayed in one-screen display just before the television image of the channel is displayed on a display section 11 as two-screen display. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to a display control apparatus and a television apparatus that execute switching between single-screen display and dual-screen display.

As this type of television apparatus, Japanese Patent Laid-Open No. 6-38130 discloses a two-screen display television receiver (hereinafter referred to as a “television receiver”) configured to be capable of switching between one-screen display and two-screen display. Say). As shown in FIG. 1 of the same publication, this television receiver includes buttons L and R for switching the display positions of two images when displaying two screens to the left and right, and buttons for channel selection. An operation signal corresponding to the operation of the button is output to the system control unit 19. The system control unit 19 controls the channel / input selection units 11 and 12, the two-screen processing unit 13, the display selection unit 14, and the like according to the operation signal output from the operation unit 18, thereby displaying one screen display and two screen display. It is possible to control switching.
JP-A-6-38130 (page 3-4, FIG. 1)

  However, this conventional television receiver has the following problems. That is, in this television receiver, switching between one-screen display and two-screen display is performed by operating the operation unit 18 dedicated to the television receiver including the buttons L and R. On the other hand, a remote control device provided in an AV (audio visual) device such as a VTR (Videotape Recorder) in recent years has a multi-remote control function capable of performing a channel switching operation on other devices such as a television device. . For this reason, for example, when this type of AV device is used by being connected to a television device, both of these devices are used by using only the remote control device of the AV device without using the remote control device of the television device. It is possible to operate. However, since this conventional television receiver requires a dedicated operation unit 18 having switching dedicated buttons L and R in order to perform switching operation between one-screen display and two-screen display, There is a problem that it is not possible to switch between single-screen display and dual-screen display using only the remote control device.

  The present invention has been made in view of such problems, and a display control apparatus that can easily switch from a one-screen display of a television image to a two-screen display without using a remote control device having a switch-only button. The main object of the present invention is to provide a television device.

  In order to achieve the above object, the display control apparatus according to the present invention displays a single-screen display for displaying a television image of one channel in the display screen of the display unit, and displays each of the television images of two channels in the display screen. The display control device includes a control unit that performs switching and executing the two-screen display, and an operation that is output when operating each channel button from a remote control device that has a plurality of channel buttons respectively associated with each channel A receiving unit that receives a signal, and when the control unit receives an operation signal corresponding to a channel button of the channel being displayed in a state in which the one screen is being displayed, The TV image of the channel, and before being displayed in the one-screen display immediately before displaying the TV image The channel television picture and a to two-screen display.

  According to this display control apparatus, when an operation signal corresponding to a channel button of a channel displayed by the control unit in a state where one screen is displayed is received by the reception unit, By operating the dedicated switch button to switch from the one-screen display of the TV image to the two-screen display by displaying the two-screen TV image of the channel displayed in the one-screen display immediately before displaying the TV image. This can be done easily by just operating the channel button. Therefore, for example, in a usage pattern in which an AV device is connected to a display control device, a television set that uses only the remote control device of the AV device, for example, without using a remote control device dedicated to the display control device provided with a switch dedicated button. The image can be easily switched from the one-screen display to the two-screen display.

  In the display control device according to the present invention, in the display control device, the control unit is a channel associated with either one of the two displayed channels in a state where the two screens are displayed. When the operation signal corresponding to the button is received by the receiving unit, the television image of the one channel is displayed on one screen.

  According to this display control apparatus, the operation signal corresponding to the channel button associated with either one of the two channels displayed in the state where the control unit displays the two screens is received by the receiving unit. Sometimes, the television image of one of the channels is displayed on one screen, so that switching from the two-screen display to the one-screen display can be easily performed using only the channel button.

  In the display control device according to the present invention, in the display control device, the control unit corresponds to channel buttons of channels other than the displayed two channels in a state where the two screens are displayed. When the operation signal to be received is received by the receiving unit, the television image of the other channel is displayed in place of either one of the displayed television images.

  According to this display control apparatus, the operation signal corresponding to the channel button of the channel other than both channels displayed in the state where the control unit displays the two screens of the television image is received by the receiving unit. Sometimes, by displaying the TV images of other channels in place of either one of the two TV images displayed on the two screens, the user can operate the two TVs only by operating the channel button in the two-screen display state. While viewing one of the images, the other can be switched to a television image of another channel and displayed.

  Furthermore, the display control apparatus according to the present invention includes first and second tuners capable of extracting broadcast signals of the respective channels in the display control apparatus described above, and the control unit includes the first and second tuners. The television image is displayed on one screen based on the broadcast signal extracted by either one, and the television images are displayed on two screens based on the broadcast signal respectively extracted by the first and second tuners. .

  According to this display control apparatus, the first and second tuners capable of extracting the broadcast signals of the respective channels are provided, so that when the television image is displayed on two screens, the broadcast signals of the two channels can be received by one tuner. Unlike the extraction configuration, two television images can be displayed as moving images.

  Furthermore, a television device according to the present invention includes the display control device described above and the display unit.

  According to this television apparatus, by providing the display control device and the display unit, it is possible to achieve the same effect as that of the display control device.

  The best mode of a display control device and a television device according to the present invention will be described below with reference to the accompanying drawings. As an example, the television device 1 shown in FIG. 1 is a television device that displays an image by projecting projection light from the back side of the screen panel, and includes a device body 2 and a remote control device 3. The apparatus main body 2 includes a display unit 11, a display control unit 12, a channel selection processing unit 13, a first tuner 14, a first image signal processing unit 15, a second tuner 16, a second image signal processing unit 17, a receiving unit 18, and The main control unit 19 is provided. In this case, the display controller 12, channel selection processor 13, first tuner 14, first image signal processor 15, second tuner 16, second image signal processor 17, receiver 18, and main controller 19 A display control apparatus according to the invention is configured. In addition, although this television apparatus 1 is actually provided with the audio | voice output part, in order to make an understanding of this invention easy, the illustration and description are abbreviate | omitted.

  As shown in FIG. 1, the display unit 11 includes an optical engine 21 and a screen panel 22. The optical engine 21 is disposed, for example, on the bottom side inside the apparatus main body 2, and the projection light L that is light-modulated based on the display image signal Se output from the display control unit 12 is on the back side of the screen panel 22. Project toward. Specifically, the optical engine 21 includes, for example, a light source lamp and modulation means for modulating white light from the light source lamp into projection light L that can display an image (for example, a liquid crystal panel, an incident-side polarizing plate, and an emission side). A liquid crystal light valve provided with a side polarizing plate) and a projection lens (none of which is shown) for projecting the projection light L in an enlarged manner. In this television apparatus 1, actually, the projection light L projected from the optical engine 21 is reflected by the reflection mirror and projected onto the screen panel 22. However, in order to facilitate understanding of the present invention. The illustration and description thereof will be omitted. The screen panel 22 displays various images by receiving the projection light L projected from the optical engine 21 and converting it into diffuse or parallel light.

  The display control unit 12 receives the image data Dp output from the first image signal processing unit 15 under the control of the main control unit 19, and, for example, as shown in FIG. Display image signal Se for displaying one screen of “television image P” when the contents of the image are not distinguished from each other are generated and output to the optical engine 21. In addition, the display control unit 12 receives the image data Dp output from the first image signal processing unit 15 and the second image signal processing unit 17 under the control of the main control unit 19, for example, as illustrated in FIG. 4. As described above, the display image signal Se for displaying the television images P 1 and P 2 on the two screens is generated and output to the optical engine 21. The channel selection processing unit 13 outputs the control signal Sc2 under the control of the main control unit 19, thereby extracting the broadcast signal Sb by the first tuner 14 and the second tuner 16, and the first image signal processing unit 15 and The output of the image data Dp by the second image signal processing unit 17 is controlled.

  In accordance with the control signal Sc2 output from the channel selection processor 13, the first tuner 14 and the second tuner 16 receive the broadcast signal Sb of the channel specified by the control signal Sc2 via an antenna not shown. And output to the first image signal processing unit 15 and the second image signal processing unit 17, respectively. The first image signal processing unit 15 and the second image signal processing unit 17 are configured to include, for example, an IF circuit, an image detection circuit, an A / D conversion unit (all not shown), and the like. An image signal is extracted from the broadcast signal Sb output by the second tuner 16, and the image signal is A / D converted to output image data Dp. The receiving unit 18 receives the operation signal So output from the remote control device 3 and transfers it to the main control unit 19.

  The main control unit 19 corresponds to the control unit in the present invention, and controls the display control unit 12 and the channel selection processing unit 13 in an integrated manner by outputting a control signal Sc1. Further, the main control unit 19 is configured to display a single-screen television image P on the display unit 11 on a single screen based on the operation signal So output from the reception unit 18 and a two-channel television image P. Is switched to a two-screen display to be displayed on the display unit 11 in two screens. In this case, for example, as shown in FIG. 2, the main control unit 19 associates with other channels (for example, channel CH2) except for the channel CH1 of the television image P1 when the television image P1 is displayed on one screen. When the channel button 31a (button with the numeral “2” shown in the figure) of the remote control device 3 is operated and the operation signal So corresponding to the channel button 31a is received by the receiving unit 18, As shown in FIG. 3, the control signal Sc1 for displaying the TV image P2 of the channel CH2 on one screen is output. Further, as shown in the figure, the main control unit 19 operates the channel button 31a associated with the channel CH2 in a state where the television image P2 of the channel CH2 is displayed on one screen, and the channel button 31a. When the operation signal So corresponding to is received by the receiving unit 18, the television image P (in this case, the television image P1) displayed on the one-screen display immediately before the television image P2 is displayed and the television image P2 are displayed. As shown in FIG. 4, a control signal Sc1 for displaying two screens is output.

  Further, for example, as shown in FIG. 4, the main control unit 19 removes channels CH1 and CH2, for example, channel CH3 in a state where a television image P1 of channel CH1 and a television image P2 of channel CH2 are displayed on two screens. When the channel button 31a (button with the numeral “3” shown in the figure) associated with is operated and the operation signal So corresponding to the channel button 31a is received by the receiving unit 18, FIG. As shown in FIG. 5, a control signal Sc1 for displaying the TV image P3 of the channel CH3 together with the TV image P2 in place of the TV image P1 is output. Further, the main control unit 19 associates with one of the channels CH2 and CH3 (for example, the channel CH3) in a state where the television image P2 and the television image P3 are displayed on two screens as shown in FIG. When the received channel button 31a is operated and the operation signal So corresponding to the channel button 31a is received by the receiving unit 18, the control signal Sc1 for displaying the TV image P3 of the channel CH3 on one screen as shown in FIG. Is output.

  As shown in FIG. 2, the remote control device 3 is formed separately from the device main body 2. Further, the remote control device 3 is configured by arranging various operation buttons such as twelve channel buttons 31a, 31a,... And a power button 31b, and corresponds to each operation button when these operation buttons are operated. The operation signal So to be converted into an infrared signal is output. In this case, the channel buttons 31a, 31a,... Are associated with television broadcasting channels CH1 to CH12, for example.

  Next, the overall operation of the television apparatus 1 will be described with reference to the drawings. In the television device 1, when the power button 31 b of the remote control device 3 is operated, power is supplied to the optical engine 21 and the light source lamp emits white light. Also, the first tuner 14 extracts and outputs the broadcast signal Sb of the channel (for example, channel CH1) that was selected immediately before the power was turned off. Next, the first image signal processing unit 15 extracts an image signal from the broadcast signal Sb output by the first tuner 14, generates image data Dp, and outputs the image data Dp to the display control unit 12. Next, the display control unit 12 generates a display image signal Se based on the image data Dp output from the first image signal processing unit 15 and outputs the display image signal Se to the optical engine 21. In response to this, the modulation means of the optical engine 21 modulates the white light from the light source lamp into the image display projection light L based on the display image signal Se, and the projection lens projects the projection light L in an enlarged manner. As a result, the projection light L is projected onto the screen panel 22, and the television image P1 of the channel CH1 is displayed on the screen panel 22 as one screen as shown in FIG.

  On the other hand, when the TV image P2 of the channel CH2 is displayed instead of the TV image P1, for example, the channel button 31a associated with the channel CH2 in the remote controller 3 (the number “2” shown in FIG. 2 is attached). The channel button 31a) is operated. At this time, the remote controller 3 outputs an operation signal So corresponding to the operated channel button 31 a, and the reception unit 18 receives the operation signal So and transfers it to the main control unit 19. Next, the main control unit 19 outputs a control signal Sc1 for displaying one screen of the television image P2 to the channel selection processing unit 13 and the display control unit 12 in accordance with the operation signal So. Subsequently, the channel selection processing unit 13 outputs a control signal Sc2 for extracting the broadcast signal Sb of the channel CH2 to the second tuner 16 in accordance with the control signal Sc1. In response to this, the first tuner 14 extracts and outputs the broadcast signal Sb of the channel CH2, and the first image signal processing unit 15 extracts the image signal from the broadcast signal Sb of the channel CH2 to generate image data Dp. To the display control unit 12. Next, the display control unit 12 outputs a display image signal Se based on the image data Dp, and the optical engine 21 projects the projection light L based on the display image signal Se. The TV image P2 of CH2 is displayed on the screen panel 22 as a single screen.

  Next, for example, when the television image P2 and the other television image P are displayed on the two screens from the state where the television image P2 is displayed on one screen as shown in FIG. 3, it is associated with the channel CH2 of the television image P2. The channel button 31a (the button with the number “2” shown in FIG. 2) is operated. At this time, the remote control device 3 outputs an operation signal So corresponding to the channel button 31 a, and the receiving unit 18 receives the operation signal So and transfers it to the main control unit 19. In response to this, the main control unit 19 controls to display the television image P (in this case, the television image P1) and the television image P2 that were displayed in the one-screen display immediately before the television image P2 is displayed on the two screens. The signal Sc1 is output to the display control unit 12 and the channel selection processing unit 13. Next, the channel selection processing unit 13 outputs a control signal Sc2 for extracting the broadcast signal Sb of the channel CH1 to the second tuner 16 in accordance with the control signal Sc1. In addition, the channel selection processing unit 13 outputs, for example, a control signal Sc2 that instructs to compress and output the image data Dp in the horizontal direction to the first image signal processing unit 15 and the second image signal processing unit 17.

  At this time, the first tuner 14 continues to extract and output the broadcast signal Sb of the channel CH2. The second tuner 16 extracts and outputs the broadcast signal Sb of the channel CH1 according to the control signal Sc2. Next, the first image signal processing unit 15 compresses the image signal extracted from the broadcast signal Sb of the channel CH2 according to the control signal Sc2, and displays the television image P2 by, for example, halving it in the horizontal direction. Image data Dp to be generated is output. Further, the second image signal processing unit 17 compresses the image signal extracted from the broadcast signal Sb of the channel CH1 in accordance with the control signal Sc2, and displays the television image P1 by, for example, halving it in the horizontal direction. Image data Dp is generated and output. Next, the display control unit 12 displays the television images P1 and P2 shown in FIG. 4 on two screens based on the image data Dp output from the first image signal processing unit 15 and the second image signal processing unit 17, respectively. The display image signal Se is generated and output to the optical engine 21. Next, the optical engine 21 projects the projection light L based on the display image signal Se. Thereby, as shown in the figure, the television images P1 and P2 are displayed on the screen panel 22 in two screens.

  Next, for example, when the television image P1 of the television images P1 and P2 shown in FIG. 4 is switched to the television image P3 of the channel CH3 and displayed, the channel button 31a associated with the channel CH3 (see FIG. 2). The button with the number “3” shown) is operated. At this time, the remote controller 3 outputs an operation signal So corresponding to the operated channel button 31 a, and the reception unit 18 receives the operation signal So and transfers it to the main control unit 19. In response to this, the main control unit 19 outputs a control signal Sc1 for displaying the television image P3 and the television image P2 on two screens to the display control unit 12 and the channel selection processing unit 13. Next, the channel selection processing unit 13 outputs a control signal Sc2 for extracting the broadcast signal Sb of the channel CH3 to the second tuner 16 in accordance with the control signal Sc1.

  At this time, the first tuner 14 continues to extract and output the broadcast signal Sb of the channel CH2. The second tuner 16 extracts and outputs the broadcast signal Sb of the channel CH3 according to the control signal Sc2. Subsequently, the first image signal processing unit 15 compresses the image signal extracted from the broadcast signal Sb of the channel CH2, and compresses the television image P2 in the horizontal direction, for example, to display the image data. Dp is subsequently generated and output. In addition, the second image signal processing unit 17 compresses the image signal extracted from the broadcast signal Sb of the channel CH3, and compresses the television image P3 by, for example, 1/2 to display the image data Dp. Is generated and output. Next, the display control unit 12 displays two television images P2 and P3 shown in FIG. 5 on the basis of the image data Dp output from the first image signal processing unit 15 and the second image signal processing unit 17, respectively. The display image signal Se is generated and output to the optical engine 21. Subsequently, the optical engine 21 projects the projection light L based on the display image signal Se. As a result, as shown in the figure, instead of the television image P1, the television image P3 is displayed on the screen panel 22 together with the television image P2.

  Next, for example, when the television image P3 of the television images P2 and P3 shown in FIG. 5 is displayed on one screen, the channel button 31a associated with the channel CH3 is operated again. At this time, the remote controller 3 outputs an operation signal So corresponding to the operated channel button 31 a, and the reception unit 18 receives the operation signal So and transfers it to the main control unit 19. In response to this, the main control unit 19 outputs to the display control unit 12 and the channel selection processing unit 13 a control signal Sc1 for displaying one screen of the television image P3 of the channel CH3. Next, the channel selection processing unit 13 outputs a control signal Sc2 for stopping the extraction of the broadcast signal Sb of the channel CH2 to the first tuner 14 in accordance with the control signal Sc1. Further, the channel selection processing unit 13 outputs a control signal Sc2 that instructs to output the image data Dp without compression to the second image signal processing unit 17.

  Subsequently, the first tuner 14 stops extracting the broadcast signal Sb of the channel CH2 according to the control signal Sc2. At this time, the first image signal processing unit 15 stops the generation (output) of the image data Dp because the extraction (output) of the broadcast signal Sb by the first tuner 14 is stopped. The second tuner 16 continues to extract and output the broadcast signal Sb of the channel CH3, and the second image signal processing unit 17 extracts the image signal from the broadcast signal Sb of the channel CH3 according to the control signal Sc2, and performs compression processing. Without generating the image data Dp, the image data Dp is generated and output to the display control unit 12. Subsequently, the display control unit 12 outputs the display image signal Se based on the image data Dp output from the second image signal processing unit 17, and the optical engine 21 projects the projection light L based on the display image signal Se. As a result, as shown in FIG. 6, the television image P <b> 3 is displayed on one screen on the screen panel 22. Instead of the above-described remote control device 3, for example, a remote control device having a multi-remote control function provided in an AV device such as a VTR can be used. In this case, the receiving unit 18 receives an operation signal output from the remote control device of the AV apparatus when the channel button is operated, and the main control unit 19 outputs the various control signals Sc1 described above according to the operation signal.

  Thus, according to the television apparatus 1, when the main control unit 19 operates the channel button 31a associated with the channel of the television image P in a state where the television image P is displayed on one screen. In addition, the television image P and the television image P that was displayed in the one-screen display immediately before the television image P is displayed are displayed in two screens, so that the television image P is changed from the one-screen display to the two-screen display. Switching can be easily performed only by operating the channel button 31a without operating a dedicated switching button. Therefore, for example, in a usage form in which an AV device is connected to a television device, for example, a TV image P can be obtained using only the remote control device of the AV device without using a remote control device having a switch-only button. It is possible to easily switch from the one-screen display to the two-screen display.

  In addition, when the main control unit 19 operates the channel button 31a associated with one of the channels of each television image P displayed on the two screens when the television image P is displayed on the two screens. By displaying the television image P of the channel on one screen, switching from the two-screen display to the one-screen display can be easily operated only with the channel button 31a.

  In addition, when the main control unit 19 operates the channel button 31a associated with other channels except for the channel of each television image P displayed on the two screens in the state where the television image P is displayed on the two screens. In addition, the user can only operate the channel button 31a in the two-screen display state by displaying the two-screen display of the TV image P of the other channel instead of any one of the TV images P displaying the two-screen. Thus, one of the two television images P can be viewed and the other can be switched to the television image P of another channel and displayed.

  Further, since the two tuners of the first tuner 14 and the second tuner 16 are provided, when the TV image P is displayed on two screens, the configuration is different from the configuration in which the broadcast signals Sb of two channels are extracted by one tuner. Two television images P can be displayed as moving images, respectively.

  In addition, this invention is not limited to said structure. For example, although the example in which the display unit 11 is configured by including the optical engine 21 and the screen panel 22 has been described above, a CRT, a liquid crystal display panel, a plasma display, or the like may be employed as the display unit. Further, the present invention can also be applied to a display control device that displays a television image P on one screen (or two screens) on an external display device without providing a display unit. In addition, the configuration example in which the first tuner 14 and the second tuner 16 are provided and the broadcast signals Sb of the two channels are extracted by the tuners 14 and 16 when displaying two screens has been described above. It is also possible to adopt a configuration in which broadcast signals Sb of two channels are switched in a short cycle and extracted alternately for one tuner.

1 is a block diagram illustrating a configuration of a television device 1. FIG. 1 is a front view of a television device 1. FIG. It is the display screen figure which displays the television image P2 on one screen. It is a display screen figure which is displaying TV images P1 and P2 on two screens. It is a display screen figure on which TV images P2 and P3 are displayed on two screens. It is a display screen figure on which the television image P3 is displayed on one screen.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 1 Television apparatus, 3 Remote control apparatus, 11 Display part, 14 1st tuner, 16 2nd tuner, 18 receiving part, 19 Main control part, 22 Screen panel, 31a Channel button, P1, P2, P3 Television image, Sb broadcast Signal, So operation signal

Claims (5)

A control unit is provided that switches between a one-screen display for displaying a television image of one channel in the display screen of the display unit and a two-screen display for displaying each television image of two channels in the display screen. A display control device,
A receiving unit for receiving an operation signal output when operating each channel button from a remote control device having a plurality of channel buttons respectively associated with each channel;
The control unit, when the operation signal corresponding to the channel button of the channel being displayed is received by the reception unit in the state where the one screen is displayed, the television image of the channel, and the A display control apparatus that displays the television image of the channel displayed in the one-screen display immediately before displaying the television image in two screens.   When the control unit receives an operation signal corresponding to a channel button associated with one of the two displayed channels when the two screens are displayed, the control unit receives the one of the two screens. The display control apparatus according to claim 1, wherein the television image of the channel is displayed on a single screen.   When the control unit receives an operation signal corresponding to a channel button of a channel other than both of the displayed channels in a state where the two screens are displayed, the control unit receives the other channel. The display control apparatus according to claim 1, wherein the television image is displayed in place of either one of the displayed television images. Comprising first and second tuners capable of extracting broadcast signals of the respective channels;
The control unit displays the television image on a single screen based on the broadcast signal extracted by one of the first and second tuners, and the broadcast extracted by the first and second tuners, respectively. The display control apparatus according to claim 1, wherein each television image is displayed in two screens based on a signal.   The television apparatus provided with the display control apparatus in any one of Claim 1 to 4, and the said display part.

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