JP4257541B2 - Digital television broadcast compatible television - Google Patents

Description

  The present invention relates to a digital television broadcast compatible television, and more particularly to a digital television broadcast compatible television capable of displaying subchannels.

  In recent years, digital television broadcasting capable of achieving high image quality and multi-channel is becoming more popular. The digital television broadcasting, BS (Broadcasting Satellite) digital broadcasting, is as CS digital broadcasting, which is represented by (Communications Satellite) digital broadcasting is transmitted, plans to be fully migrated to the prospect of the 2011 years in Japan is made is there. Digital broadcasting in North America as an advanced country of digital television broadcasting is standardized by ATSC (Advanced Television Systems Committee), and is transmitted by virtual channels different from analog broadcasting. Among these, there are many digital broadcasts transmitted from the same or the same system as the conventional analog broadcast. In this case, in order to improve the usability of users who are used to the channel number of the conventional analog broadcast, It is operated so that channel selection and display can be performed by a physical channel to which the same channel number as that of analog broadcasting is assigned.

  FIG. 7 is a diagram showing a TS (Transstream) used for digital television. As shown in the figure, in one transstream, there are a physical channel corresponding to a carrier wave of a specific frequency, and a plurality of subchannels, and SI (program information) describing program information of the physical channels and subchannels. It is transmitted with being superimposed. Also, the broadcast time frame is suddenly changed for the sub-channel that is transmitted while being superimposed on the physical channel. In digital broadcasting, information about the channel configuration that varies as described above is transmitted together with a signal such as a video. Therefore, in the digital broadcast receiving apparatus, information on the broadcast can be obtained by receiving the digital broadcast signal with the tuner, decoding with the digital decoder, and analyzing the program information included in the decoded signal.

  However, in analog television broadcasting, one program is assigned to a carrier wave. However, in digital television broadcasting, the frequency as a carrier and the digital television broadcasting are 1 by the above-described superimposed subchannel. There is no one-to-one correspondence. For this reason, the selection of sub-channels must be displayed sequentially with the remote controller.

  As a method for selecting a sub-channel broadcast, the screen is divided based on program information superimposed on the trans stream, the superimposed sub-channel broadcast introduction image is displayed, and the user selects a predetermined sub-channel broadcast on the screen. A method of displaying the sub-channel on a full screen when an image for introducing a channel broadcast is selected is disclosed (for example, see Patent Document 1).

  Further, there is disclosed a method of dividing a plurality of screens based on the superimposed program information and displaying the subchannel broadcast on the divided screen without using an image for introducing the subchannel broadcast (for example, , See Patent Document 2).

Furthermore, as a channel selection method using a physical channel and subchannel remote controller, a method of selecting a physical channel and a subchannel with a simple operation with few inputs is disclosed (for example, see Patent Document 3).
JP-A-9-326972 JP-A-11-252520 JP2002-232796

  The invention of Patent Document 1 described above has the following problems. That is, the subchannel introduction video is superimposed on the subchannel selection screen, and the subchannel broadcast frame may be used for the subchannel introduction video. In addition, in the case of a subchannel having no video for introducing the subchannel, the video is not displayed on the screen.

  Further, the invention of Patent Document 2 has the following problems. That is, subchannel broadcasting is used to select a subchannel, but there is a problem with the display method of the subchannel divided screen. Furthermore, since the sub-channel broadcast frequently changes the broadcast time frame, it has been confirmed whether there is an intended one in the sub-channel divided display.

  Further, the invention of Patent Document 3 has the following problems. Since the invention of Patent Document 3 is a sub-channel selection method, the contents of sub-channel broadcasting have not been confirmed.

  The present invention has been made in view of the above problems, and displays a list of a plurality of subchannels by dividing the screen, thereby eliminating the trouble of selecting a channel for the subchannel to the user, It is an object of the present invention to provide a digital television compatible television capable of confirming different subchannel broadcasts on the divided screen.

In order to solve the above-described problem, the present invention provides a tuner unit that receives a digital television radio wave in which a physical channel, a plurality of subchannels, and program information are superimposed on a carrier wave of a specific frequency as a transstream, and the tuner receiving a plurality divided and displayable video circuit screens based television radio wave received by part, an operation signal from a remote controller having a channel key and a hyphen key multiple, recorded in the recording unit In a digital television broadcast-compatible television having the tuner unit and a control unit that controls the video circuit based on a control program, the control unit is configured to preset the tuner unit for channel setting. Number superimposed on the physical channel of the digital television wave received by the Based on the information, it creates the correspondence between the sub-channel superimposed on the same physical channel and the physical channel as a physical channel / sub channel table, the channel setting of the sub-channels using the physical channel / sub-channel table created above auto preset, after the selection of the key corresponding to the physical channel at the pressing of the channel keys of the remote control is made, when the pressing of the hyphen key is made, the control unit, the physical channel selected at the same remote control multiple displays a plurality of sub-channels that are superimposed on the screen, a new not recorded in the physical channel / sub-channel table is updated in a predetermined cycle refers to the program information received by the tuner section If it detects a sub-channel, the sub displayed on the screen Together make recognizably displaying an image corresponding to Yan'neru to display a character string for confirming whether to auto preset subchannels on the screen, the operation input to automatic presetting the sub-channel by using the remote control When this is done, the sub-channel is configured to auto-preset .

In the arrangement the inventions as described above, the control unit, when performing auto-preset channel if the tuner section is a one-to-one correspondence with the carrier, on the basis of the program information superposed on a physical channel, a subchannel Physical channel correspondence is created as a physical channel / subchannel table. Next, after the key corresponding to the physical channel is selected by pressing the channel key of the remote controller using the physical channel / subchannel table, when the hyphen key is pressed, the control unit displays the physical channel / subchannel table. Refer to the channel table and divide the screen to display a list of subchannels. At this time, for each transstream, the control unit compares the superimposed program information with the physical channel / subchannel, and if the program information includes a subchannel broadcast different from the physical channel / subchannel table. The sub-channel broadcast is displayed, the screen is displayed in a recognizable manner, and a character string for prompting auto-preset of the sub-channel is displayed.

In order to achieve the above object, the present invention includes a tuner unit that receives a digital television radio wave in which a physical channel, a plurality of subchannels, and program information are superimposed on a carrier wave having a specific frequency, and at least a plurality of tuners. Accepts an operation signal from a remote controller having a channel key and a hyphen key, and can display a digital television broadcast received by the tuner unit by dividing a plurality of images based on a channel number selected by the remote controller. In a digital television broadcast-compatible television having a video circuit,
When performing channel setting presetting of the physical channel, subchannel setting means for recording channel setting information of the subchannel superimposed and transmitted on the physical channel based on the program information, and operation of the channel key of the remote controller After inputting the channel number corresponding to the physical channel at, when the hyphen key is operated, it is superimposed on the physical channel based on a plurality of channel setting information recorded by the sub-channel setting means. It may be configured to include subchannel display means for displaying the subchannel broadcast by dividing the screen.

In the invention configured as described above, the subchannel setting means, when presetting the channel setting of the physical channel, uses the channel setting information of the subchannel transmitted superimposed on the physical channel based on the program information. Record. The subchannel display means inputs a channel number corresponding to the physical channel by operating the channel key of the remote controller, and then operates the hyphen key to operate a plurality of data recorded by the subchannel setting means. Based on the channel setting information, the sub-channel broadcast superimposed on the physical channel is divided and displayed.

In the present invention, the sub-channel display means updates the channel setting information on the basis of program information transmitted for each trans stream, and the updated channel setting information and the channel transmitted in the previous trans stream. In addition to comparing with the setting information, if there is a new subchannel broadcast in the updated channel setting information, it may be configured to have a subchannel change response means for recognizing and displaying the new subchannel.

In the configuration the inventions as described above, the sub-channel display means, the channel setting information together with the update at the program information transmitted for each transformer stream, updated channel configuration information and update previous channel setting information Compare If there is a new subchannel broadcast in the newly updated channel setting information, the subchannel change responding means displays the subchannel broadcast on the divided screen and recognizable on the divided screen.

Further, in the present invention, the subchannel change responding unit may change the color of the screen on which the subchannel is displayed when the newly added subchannel is displayed on the subchannel display unit. .

In inventions constructed as described above, when displaying the new sub-channel broadcasting, sub-channel change corresponding means changes the color of the screen the sub-channel is displayed.

Further, in the present invention, when the subchannel change responding means displays the newly added subchannel on the subchannel display means, the channel setting information of the subchannel displayed on the same screen is displayed on the subchannel. It is good also as a structure which displays the character string which encourages recording to a setting means.

In the configuration the inventions as described above, if we find a broadcast of a new sub-channel, sub-channel change corresponding means, the channel setting information of the sub-channels that are displayed on the same screen in the sub-channel setting means A character string that prompts recording is displayed.

As described above, according to the present invention, since the subchannels are displayed in a list, it is possible to eliminate the troublesome selection of the program by the user.
Further, according to the present invention, it is possible to provide a list display of subchannels that can cope with subchannels that change with time.
And according to this invention, the subchannel changed suddenly can be displayed on a division | segmentation screen so that recognition is possible.
Further, according to the present invention, the sub-channel auto-preset can be confirmed so as to be recognized by the user by displaying the character string prompting the sub-channel auto-preset on the screen .

Hereinafter, a digital television broadcast-compatible television that is an embodiment of the present invention will be described in the following order.
(1) Configuration of digital television broadcast-compatible television (2) Subchannel display method (3) Summary

(1) Configuration of digital television broadcast compatible television
Hereinafter, with reference to FIG. 1, FIG. 2, FIG. 3, FIG. 4, FIG. 5 and FIG. 6, an embodiment embodying a digital television broadcast-compatible television 10 according to the present invention will be described. FIG. 1 is a block diagram of a digital television broadcast compatible television 10. From the figure, the digital television broadcast-compatible television 10 has a tuner unit 11, a video circuit (video display means) 12, a control unit 13, a display 16 and an audio circuit 17 on the display device 10a side. And a power supply circuit 14 and a remote controller 15 for remotely operating the display device 10a. As a schematic explanation of the operation of the digital television broadcast-compatible television 10, based on the operation of the remote controller 15, a basic television broadcast instructed by the control unit 13 is received and an image is displayed on the display 16. A specific description will be given below.

  The remote controller 15 has an infrared transmitter 15a and operation keys 15b. When the user presses the operation key 15b, an operation signal corresponding to each operation key 15b is output. When receiving the operation signal, the infrared transmitter 15a converts the operation signal into a predetermined infrared signal and outputs it to the display device 10a side. The operation keys 15b include a power key 15b1 for inputting power to the display device 10a, channel keys 15b2 and 15b3 for switching channels, a volume key 15b4 for adjusting volume, and a menu for displaying 0SD video on the display device 10a. A key 15b5, an enter key 15b6 for selecting a menu on the OSD video, a hyphen key 15b7 used for selecting a channel for digital television broadcasting, and a left / right key for operating a cursor on the OSD video And a key 15b8. The remote controller 15 realizes each operation by outputting an infrared signal corresponding to the pressing of each key to the display device 10a.

  The display device 10 a receives each infrared signal from the remote controller 15 at the control unit 13. The control unit 13 is a remote controller I / F 13a that receives an infrared signal from the remote controller 15, a microcomputer 13b that controls the display device 10a based on the received infrared signal, and a record that records a program for the microcomputer 13b to control. The unit 13c has an OSD circuit 13d for displaying an OSD video. The remote control I / F 13a converts the infrared signal transmitted from the remote control 15 into an operation signal again and outputs it to the microcomputer 13b. The recording unit 13c records a control program for the microcomputer 13b to perform predetermined control based on an operation signal from the remote control I / F 13a. Based on the control program, the microcomputer 13b controls the display device 10a. Do. Examples of the recording unit 13c include a ROM for recording a program, a RAM as a work table of the microcomputer 13b, an HDD, and the like.

  When either analog television broadcasting or digital television broadcasting is selected based on the pressing of the channel key 15b2 from the remote controller 15, the microcomputer 13b sends the selected channel key 15b2, 15b3 to the tuner unit 11. An instruction is issued to receive a carrier wave having a corresponding specific frequency. The tuner unit 11 performs chroma control for generating a video signal and an audio signal corresponding to a predetermined channel based on an instruction from the microcomputer 13b based on the digital television wave and the analog television wave received by the antenna 11a. The tuner unit 11 includes an analog / digital tuner unit 11b, an analog decoder 11c, a digital decoder 11d, and a switching unit 11e.

  The analog / digital tuner unit 11b generates a video signal and an audio signal from either a digital television radio wave or an analog television radio wave. When the analog / digital tuner unit 11b receives an analog television radio wave, the analog decoder 11c performs analog / digital conversion on the video signal and the audio signal. When the digital decoder 11d receives a digital television wave, the digital decoder 11d performs analog / digital conversion on the video signal and the audio signal, and performs MPEG2 decoding. The switching unit 11e switches between the output of the analog decoder 11c and the output of the digital decoder 11d according to an instruction from the microcomputer 13b. An example of the analog / digital tuner unit 11b is a PLL system.

  In order for the tuner unit 11 to select a television broadcast corresponding to a predetermined channel in accordance with the operation of the channel key 15b2 or 15b3 of the remote controller 15, it is necessary to perform auto-preset of channel setting in advance. Auto-preset can be performed on the OSD screen displayed on the screen when the menu key 15b5 of the remote controller 15 is pressed. In the auto preset, the tuner unit 11 associates the operation signal of the channel key 15b2 with the frequency of the carrier wave. At this time, analog television waves have a one-to-one correspondence between carrier waves and television broadcasts as data, but digital television waves are a single carrier wave in which television broadcasts or radio broadcasts are multiplexed. It is transmitted in TS (Transstream) format. For this reason, the digital television radio wave has SI (program information) for specifying a television broadcast as data included in the TS. SI includes program information (EPG) such as channel name, program name, broadcast date and time.

  For this reason, the microcomputer 13b performs the physical channel preset as a digital television broadcast channel setting preset by a normal method, and then transmits the sub-channel channel setting preset every time TS is transmitted. This is executed by generating a physical channel / subchannel table and recording it in the recording unit 13c. The microcomputer 13b recognizes the correspondence between the physical channel and the subchannel by referring to the physical channel / subchannel table. Therefore, the microcomputer 13b refers to the physical channel / subchannel table every time the channel key 15b2 is operated. FIG. 2 is an example of a physical channel / subchannel table according to the embodiment of the present invention. In the figure, the leftmost column describes the channel number of the physical channel corresponding to the carrier wave, and the left column of the channel number of each physical channel is a subchannel for each time transmitted superimposed on the physical channel. The channel number is described. For example, the channel numbers of the subchannels superimposed on the physical channel 2 in AM 10:00 to PM 0:00 are 1 for program AAA, 2 for program BBB, 3 for program CCC, and 4 for program DDD. Further, in PM0: 00 to PM14: 00, the subchannel is 1 and only FFF is being broadcast. Since the above-described SI information also changes depending on time, the microcomputer 13b updates the physical channel / subchannel table in accordance with each reception of the TS to cope with the reception of the subchannel. Thus, in the digital television broadcast-compatible television 10, the microcomputer 13b, the physical channel / subchannel table, and the recording unit 13c constitute subchannel setting means.

  The video signal output from the analog decoder 11c or the digital decoder 11d is switched by the switching unit 11e instructed by the microcomputer 13b and output to the video circuit 12. The video circuit 12 includes a scaler unit 12a that divides a video signal in accordance with an aspect ratio of a display panel 16a of a display 16 described later, a digital image processing unit 12c that performs predetermined digital image processing on the divided video signal, and Is a configuration having a buffer 12b which is a temporary recording location of the divided video signal. In addition to dividing the video signal in accordance with the aspect ratio of the display panel 16a described above, the scaler unit 12a can display different videos on a divided screen obtained by dividing the screen into a plurality of parts based on instructions from the microcomputer 13b. . When a digital television wave is received, the video corresponding to the physical channel in the TS and the video corresponding to the subchannel are temporarily recorded in the buffer. Thereafter, based on channel selection by the remote controller 15, the microcomputer 13b selects a video corresponding to the physical channel recorded in the buffer 12b or a video corresponding to the sub-channel.

  The video signal recorded in the buffer 12b is then output to the display display 16. The display 16 includes a display panel 16a in which pixels with RGB colors are arranged in a matrix with a predetermined aspect ratio (640 × 480), and the display panel 16a based on the divided video signals. And a driving circuit 16b for applying a driving voltage to each pixel. The display panel 16a displays an image on the screen by driving each pixel of RGB based on the drive voltage applied from the drive circuit 16b. Examples of the display panel 16a include a liquid crystal panel and a plasma display panel.

  The audio signal output from the tuner unit 11 is output to the audio circuit 17. The audio circuit 17 amplifies the basic audio signal instructed by the microcomputer 13b, and outputs the amplified signal as audio from the speaker 17a.

  A schematic flow of the control program recorded by the recording unit will be described below. FIG. 3 is a flowchart of the control program. As shown in the figure, when the power key 15b1 of the remote controller 15 is pressed, an infrared signal corresponding to the power on / off signal is output from the infrared transmitter 15a. When the control unit 13 receives the infrared signal, the remote control I / F 13a converts the infrared signal into a power on / off signal again, and then outputs it to the microcomputer 13b. The microcomputer 13b receives the on / off signal and instructs the power supply circuit 14 to supply necessary power to the display device 10a. In response to the above instruction, the power supply circuit 14 rectifies the commercial 100-volt AC power supplied from the outlet 14a, converts it into a power supply voltage having a predetermined voltage value, and outputs it.

  When the user operates the channel key 15b2 or 15b3 of the remote controller 15 in the above state (step S100), the microcomputer 13b outputs a channel switching signal to the tuner unit 11 by the method described above (steps S120 and S130). When the volume key 15b4 of the remote controller 15 is operated (step S140), the microcomputer 13b outputs a volume adjustment signal to the audio circuit 17 (step S150). Further, when the menu key 15b5 is operated (step S160), the microcomputer 13b instructs the OSD circuit 13d to display the OSD video on the display 16 (step S170). Further, based on the OSD video, the above-described auto preset of the analog / digital tuner 11b can be executed (step S180).

(2) Sub-channel display method When the channel keys 15b2 and 15b3 are operated in step S100, and only the channel key 15b is operated, the microcomputer 13b displays the analog television corresponding to the pressing of the channel key 15b2. The tuner unit 11 is instructed to select a broadcast from a preset carrier wave (step S120). Also, as shown in FIG. 4, when the channel key 15b2 is pressed in step S110 and then the hyphen key 15b7 is pressed (s130), the digital television broadcast corresponding to the pressing of the channel key 15b2 is transmitted to the preset carrier wave. In addition, the sub-channel display program recorded in the recording unit 13c is read out.

  FIG. 5 is a flowchart executed by the subchannel display program. As shown in the figure, when the microcomputer 13b receives the input of the hyphen key 15b after pressing the channel key 15b2, the microcomputer 13b refers to the physical channel / subchannel table recorded in the recording unit 13c (step S300). At this time, the tuner unit 11 acquires new program information superimposed on the physical channel and the subchannel by trans-stream, and records it in the buffer 12b. For this reason, when the newly acquired SI information is the same as the content displayed in the physical channel / subchannel table created in advance, the microcomputer 13b proceeds to step S320 and displays the subchannel on the video circuit 12. Give instructions. If different subchannels are superimposed by comparing the SI information with the physical channel / subchannel table, the video circuit 12 is instructed to display the subchannel based on the new SI information (step S330). ).

  Specifically, the microcomputer 13b instructs the video circuit 12 to display a list of subchannels described in the physical channel / subchannel table by dividing the screen. In response to the above instruction, the video circuit 12 divides the aspect ratio so that the video corresponding to each subchannel recorded in the buffer 12b is displayed on the screen divided by the scaler unit 12a. At this time, the microcomputer 13b sequentially switches the plurality of subchannels recorded in the buffer in a few milliseconds and outputs them to the scaler unit 12a. Thus, while a normal video is 30 frames per second, subchannels displayed on the screen are displayed at 30 / N frames per second (N: the number of subchannels displayed on the screen). .

  FIG. 6 is a diagram of subchannels that divide the screen and display a list. From the figure, the maximum number of subchannels displayed on the screen is four, and when there are four or more subchannels superimposed on the physical channel, the NEXT character string is displayed on the OSD circuit 13d at the lower left of the screen. I will let you. When the left / right key 15b8 of the remote control 15 is operated in the above state of the remote control 15, the remaining subchannels are displayed on the next screen. Thereby, the digital television broadcast-compatible television 10 constitutes a subchannel display means by the microcomputer 13b.

  If the SI information newly acquired in step S310 is different from the physical channel / subchannel table (step S330), the microcomputer 13b displays the subchannel on the video circuit 12 on the screen based on the new SI information. Give instructions. Next, the microcomputer 13b can prompt the user to confirm by displaying the sub-channel not recorded in the physical channel / sub-channel table recorded in advance on the divided screen by changing the color of the screen to green. The OSD circuit 13d is instructed to superimpose the OSD video (step S340). Further, at this time, it is also possible to display the character string “Do you want to auto-preset” on the OSD circuit 13d on the divided screen on which the subchannel is displayed. For subchannel broadcasting, the normal operating time may change suddenly due to the extension of sports broadcasting, and users may preset sudden changes in subchannel broadcasting by checking the video on the screen. It is possible to prevent. Thereby, the digital television broadcast-compatible television 10 constitutes a subchannel change corresponding means.

  While a plurality of subchannels are displayed on the split screen, the user operates the left / right key 15b8 of the remote controller 15 to select the subchannel displayed as “Do you want to auto-preset”, and press the menu key 15b5 of the remote controller 15? Then (step S350), the microcomputer 13b accepts the operation signal and updates the physical channel / subchannel table based on the newly acquired SI information (step S360). When the left / right key 15b8 is operated again to select a predetermined subchannel and the ENTER key 15b6 is pressed, the microcomputer 13b accepts the operation and instructs the video circuit 12 to display the selected subchannel on the display 16. (Step S370). Finally, the microcomputer 13b returns to the start program and performs normal control.

(3) Summary By this, when selecting a subchannel with the remote controller 15, the microcomputer 13b creates a subchannel / physical channel table, and based on the table, the channel number corresponding to the physical channel is obtained by operating the channel key 15b2. After entering, you can enter a hyphen key to display a list of subchannels superimposed on the physical channel on the split screen and select subchannels, so that users can easily select subchannels. It is possible to perform this, and it is possible to recognize the subchannel that suddenly changes on the divided screen by comparing the program information superimposed on the physical channel / subchannel table.

The present invention also includes a tuner unit that receives a digital television radio wave in which a physical channel, a plurality of subchannels, and program information are superimposed on a carrier wave of a specific frequency, and at least a plurality of channel keys and a hyphen key. A digital television having an image display means capable of receiving an operation signal from a remote controller and displaying a plurality of videos by dividing a screen of the digital television broadcast received by the tuner unit based on a channel number selected by the remote controller In the John broadcasting compatible television,
When performing channel setting presetting of the physical channel, subchannel setting means for recording channel setting information of the subchannel superimposed and transmitted on the physical channel based on the program information, and operation of the channel key of the remote controller After inputting the channel number corresponding to the physical channel at, when the hyphen key is operated, it is superimposed on the physical channel based on a plurality of channel setting information recorded by the sub-channel setting means. Sub-channel broadcasting is configured to have sub-channel display means for dividing the screen and displaying it on the video display means.

In inventions constructed as described above, the sub-channel setting means, when performing preset channel setting of the physical channel, the program information of the channel setting information of the sub-channels that are transmitted superimposed on the same physical channel Record on the basis. The subchannel display means inputs a channel number corresponding to the physical channel by operating the channel key of the remote controller, and then operates the hyphen key to operate a plurality of data recorded by the subchannel setting means. On the basis of the channel setting information, the subchannel broadcast superimposed on the physical channel is divided and displayed on the video display means, so that the troublesome selection of the program by the user can be eliminated.

In the present invention, the sub-channel display means updates the channel setting information based on program information transmitted for each trans stream, and the channel setting information transmitted in the updated channel setting information and the previous trans stream. In addition to comparing with the information, when there is a new subchannel broadcast in the updated channel setting information, there is a configuration including subchannel change corresponding means for recognizing and displaying the new subchannel.

In the configuration the inventions as described above, the sub-channel display means, the channel setting information together with the update at the program information transmitted for each transformer stream, updated channel configuration information and update previous channel setting information Compare If there is a new subchannel broadcast in the newly updated channel setting information, the subchannel change responding means displays the subchannel broadcast on the divided screen and recognizable on the divided screen.

Further, in the present invention, the subchannel change response means changes the color of the screen on which the subchannel is displayed when the newly added subchannel is displayed on the subchannel display means. It is possible to provide a list display of subchannels that can cope with subchannels that suddenly change with time.

In inventions constructed as described above, when displaying the new sub-channel broadcasting, sub-channel change corresponding means, so to change the color of the screen to the sub-channel is displayed, become suddenly changed The subchannels can be displayed on the split screen so that they can be recognized.

Further, the present invention provides the subchannel change correspondence means, wherein when the newly added subchannel is displayed on the subchannel display means, the channel setting information of the subchannel displayed on the same screen is displayed as the subchannel setting. The character string that prompts recording to the means is displayed.

In the configuration the inventions as described above, if we find a broadcast of a new sub-channel, sub-channel change corresponding means, the channel setting information of the sub-channels that are displayed on the same screen in the sub-channel setting means Since the character string that prompts recording is displayed, it is possible to confirm the auto-preset of the subchannel so that the user can recognize it.

Needless to say, the present invention is not limited to the above embodiments. It goes without saying for those skilled in the art,
・ Applying mutually interchangeable members and configurations disclosed in the above embodiments by appropriately changing the combination thereof.− Although not disclosed in the above embodiments, it is a publicly known technique and the above embodiments. The members and configurations that can be mutually replaced with the members and configurations disclosed in the above are appropriately replaced, and the combination is changed and applied. It is an embodiment of the present invention that a person skilled in the art can appropriately replace the members and configurations that can be assumed as substitutes for the members and configurations disclosed in the above-described embodiments, and change the combinations and apply them. It is disclosed as.

It is a block block diagram of a television corresponding to a digital television. It is a figure which shows a physical channel / subchannel table. It is a flowchart of the starting program which a recording part records. It is a flowchart of the subchannel display program which a recording part records. It is a figure which shows the channel selection of a subchannel. It is a list display of subchannels. It is a figure showing the trans stream used by digital television broadcasting.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 10 ... Digital television broadcast corresponding | compatible television, 10a ... Display apparatus, 11 ... Tuner part, 11a ... Antenna, 11b ... Analog / digital tuner part, 11c ... Analog decoder, 11d ... Digital decoder, 11e ... Switching part, 12 ... Video circuit, 12a ... Scaler unit, 12b ... Buffer, 12c ... Digital image processing unit, 13 ... Control unit, 13a ... Remote control I / F, 13b ... Microcomputer, 13c ... Recording unit, 13d ... OSD circuit, 14 ... Power supply circuit, 14a ... Outlet, 15 ... Remote control, 15a ... Infrared transmitter, 15b ... Operation key, 15b1 ... Power key, 15b2, 15b3 ... Channel key, 15b4 ... Volume key, 15b5 ... Menu key, 15b6 ... ENTER key, 15b7 ... Hyphen key , 15b8 ... Left / Right key ... High Nki, 16 ... display displaying, 16a ... display panel, 16b ... drive circuit, 17 ... audio circuit, 17a ... speaker

Claims (1)

A tuner for receiving a digital television radio wave in which a physical channel, a plurality of subchannels, and program information are superimposed as a trans stream on a carrier wave of a specific frequency;
A video circuit capable of dividing and displaying a plurality of screens based on television radio waves received by the tuner unit;
Receiving an operation signal from the remote control having a channel key and a hyphen key multiple, digital television having the above tuner unit based on a control program recorded in the recording unit, and a control unit for controlling the above image circuit In broadcast-compatible television,
The control unit is superimposed on the physical channel and the physical channel based on program information superimposed on the physical channel of the digital television radio wave received by the tuner unit at the time of preset channel setting of the tuner unit. create a correspondence between the sub-channel as a physical channel / sub-channel table, auto preset channel setting subchannel using the physical channel / sub-channel table created above,
After selection of the key corresponding to the physical channel at the pressing of the channel keys of the remote control is made, when the pressing of the hyphen key is made, the control unit is superimposed on the physical channel selected at the same remote control multiple display and a plurality of sub-channels on the screen,
When a new subchannel not detected in the physical channel / subchannel table is detected with reference to the program information updated at a predetermined cycle and received by the tuner unit, the same sub displayed on the screen is displayed. The video corresponding to the channel is displayed in a recognizable manner , and a character string for confirming whether or not to auto-preset the subchannel is displayed on the screen .
A digital television broadcast-compatible television , wherein, when an operation input is made to auto-preset the sub-channel using the remote controller, the sub-channel is auto-preset .

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