JP4568135B2 - Television broadcast receiver and its operation device - Google Patents

Description

  The present invention relates to a television broadcast receiver and its operation device, and more particularly to a technique for preventing an erroneous operation associated with a shift to a different system.

  Terrestrial digital broadcasting started on December 1, 2003, in the three large areas of Kanto, Kinki, and Chukyo using the UHF band of terrestrial waves. It is in a stage, and the reception time varies depending on the region. Meanwhile, terrestrial analog broadcasting is scheduled to end by July 2011. In consideration of such a situation, a technique has been proposed that enables seamless reception even when switching from analog broadcasting to digital broadcasting (see, for example, Patent Document 1).

JP 2003-219312 A

  However, the above invention is configured so that the remote control can be used with a common button for terrestrial analog TV broadcast reception and terrestrial digital TV broadcast reception. However, “ARIB TR-B14 1.5 version 2nd edition terrestrial digital television” Broadcast receiver functional specification 10.1 One-touch button assignment example As shown in the remote control one-touch button assignment is different from conventional analog broadcast reception, the remote control can be used for terrestrial analog TV broadcast reception and terrestrial digital TV broadcast reception. It is not configured so that it can be used with a common button. For example, a remote control shown in Japanese Patent Application Laid-Open No. 2004-147066, which has separate buttons used for analog broadcast reception and digital broadcast reception, and a broadcast switch button There are many things that use a common button divided in time.

  In such a television broadcast receiver, although it is necessary to examine the handling of the terrestrial analog TV broadcast reception button after receiving the terrestrial digital TV broadcast or after the terrestrial analog TV broadcast ends, Has not been studied. For this reason, in the current situation where the same content is being broadcast in the terrestrial analog TV broadcast and the terrestrial digital TV broadcast, the high-definition television receiver can receive the same service in the digital broadcast and the analog broadcast. It is preferred to receive high-quality digital broadcasts. However, if you accidentally select and watch a terrestrial analog TV broadcast, or if you accidentally select a channel after the terrestrial analog TV broadcast ends in the future, The same state as when a channel is selected, for example, the screen is in a state where only noise is captured, and the sound also feels uncomfortable just by the noise of the user.

  The present invention detects whether the terrestrial analog TV broadcast has ended according to the reception status of the television related to the terrestrial analog TV broadcast or the terrestrial digital TV broadcast, and the analog broadcast ends according to the detection result. If it is, the operation related to the viewing of the finished analog broadcast is invalidated. At this time, the invalidation processing may be performed automatically or manually. That is, the means for selecting an analog broadcast is abolished automatically or manually.

  It is also possible to make a setting for ignoring all operation buttons for selecting terrestrial analog television broadcasting based on a GUI on a television screen or the like. If it is automatically detected that the terrestrial analog television broadcast has ended, it can be controlled to ignore all even if the button for selecting the terrestrial analog television broadcast is pressed. Even if a button for selecting a network for terrestrial analog television broadcasting is pressed, a setting for ignoring can be made by using the GUI.

  Also, if there is a button for selecting a terrestrial analog TV broadcast network, it automatically detects that the terrestrial analog TV broadcast has ended and ignores the button for selecting the terrestrial analog TV broadcast network. It can also be controlled.

  When one of the terrestrial digital TV broadcasts can be received, a setting that is ignored even when the one-touch button for selecting the same analog service is pressed on the GUI is displayed on the display screen of the television broadcast receiver, for example. To do. When one of the terrestrial digital TV broadcast services can be received, control is performed so that even if the one-touch button for automatically selecting the same analog service is pressed, the information included in the stream is ignored. .

The present invention has the following effects.
(1). The user can be prevented from accidentally selecting a terrestrial analog television broadcast, and convenience can be improved. (2). In addition to (1), it is possible to save the trouble of setting with the GUI, and the convenience can be improved. (3). This function is effective for receivers that have a button for selecting a terrestrial analog TV broadcast network, and prevents the user from accidentally selecting a terrestrial analog TV broadcast, thereby improving convenience. . (Four). In addition to (3), it is possible to save the trouble of setting with the GUI, and the convenience can be improved. (Five). In receivers equipped with one-touch buttons for analog terrestrial television broadcasting, when the reception time varies depending on the service, it is possible to prevent erroneous reception of services that can be received by digital terrestrial television broadcasting using analog terrestrial services. Can be improved. (6). In addition to (5), it is possible to save the time and effort of setting with the GUI, and the convenience can be improved.

  In the following embodiment, description will be made on the assumption that all terrestrial analog television broadcasts will end in July 2011.

  FIG. 2 is a functional block diagram showing a configuration example of the television broadcast receiver according to the embodiment of the present invention. As shown in FIG. 2, the television broadcast receiver 1 includes an antenna 2 that receives a plurality of television broadcast waves transmitted from a relay station (not shown), and an analog that the user desires to view from the RF broadcast waves received by the antenna 2. An analog broadcast receiving unit 3 for selecting and demodulating a broadcast radio signal and outputting a video / audio signal, and a signal modulated using a digital modulation method according to the characteristics of each transmission path OFDM (Orthogonal Frequency Division Multiplexing) modulation system is used), and an RF signal of a digital broadcast radio wave desired to be viewed is selected and demodulated, and transport stream data in which video data and audio data are multiplexed is selected. Digital broadcast receiving unit 4 to obtain, and video / audio decoding unit that decodes TS obtained by digital broadcast receiving unit 4 and converts it into a video / audio signal for output A switching unit 6 that switches between an analog broadcast video / audio signal and a digital broadcast video / audio signal, a control unit 7 that generates a switching signal for controlling the switching unit 6, and a conventional analog television broadcast receiver. A signal presence / absence detection unit 8 that automatically determines whether or not an analog broadcast that has been used to display a blue background at the time of auto-preset or no signal is broadcast, and a digital broadcast that is built in the digital broadcast receiver 4 An automatic determination unit 9 that automatically determines whether or not the broadcast is broadcast, and a table storage unit that previously has a broadcast station name, an analog broadcast channel number, a digital broadcast channel number, etc. as a table corresponding to the remote control position 10 and a remote controller provided with operation buttons and the like operated by a viewer to use the television broadcast receiver 1 It has a location RC, a. The configuration example shown in FIG. 2 is a configuration of a general television broadcast receiver.

  FIG. 1 is a diagram illustrating a configuration example of a remote control device according to the present embodiment. As shown in FIG. 1, a remote control device RC according to the present embodiment includes a power on / off button 21, a channel selection button 23, a button 25 for selecting a terrestrial analog television broadcast network, and a digital terrestrial television broadcast. A button 27 for selecting a network, a button 31 for selecting BS digital broadcasting, and a button 35 for selecting CS broadcasting are provided.

  Next, the operation according to the present embodiment will be described with reference to FIG. FIG. 3A is a flowchart showing a process flow for detecting the end of analog terrestrial broadcasting. The television broadcast receiver according to the present embodiment enters a frequency scan operation for detecting the period when the user is not watching the television and detecting the end of the terrestrial analog broadcast. For example, the analog detection process S1a is entered to start the main scan operation immediately after the power is turned off. Scanning is performed sequentially from the channel with the lowest frequency for all the channels where terrestrial analog television broadcasting may be arranged. First, it is determined in the analog detection process S1a whether or not there is an analog broadcast at a frequency of 1 MHz of 93 MHz. If it is determined that there is an analog broadcast, the process (N) ends. If it is determined that there is no analog broadcast (Y), and if all channels have not been processed (N), the process returns to the analog detection process S1a, and whether there is analog broadcast at the next 2ch frequency. Judge whether there is. When analog broadcasting is not detected (S2a: Y, S3a: Y), the invalid flag for the ground A button 25 is set. Thereafter, the operation of the ground A button 25 is performed by the user. Even if it is received by the remote control receiving unit 11 and notified to the control unit 7, it is determined to be invalid and the channel selection operation is not performed.

  FIG. 3B is a flowchart showing details of the analog detection process S1a. Digital broadcast tuning S1b is performed at the designated frequency. Next, in S2b, it is determined whether or not the digital broadcast is based on the information from the automatic determination unit 9. If the digital broadcast is determined (Y), it is determined that there is no analog broadcast. If it is determined that it is not digital broadcasting (N), the process proceeds to S3b, and the analog broadcasting receiving unit selects analog broadcasting of the same frequency. Next, in S4b, if the signal presence / absence detector 8 determines that there is no signal (Y), it is determined that there is no analog broadcast. If it is determined that there is a signal (N), it is determined that analog broadcasting is present.

  In the above example, the analog channel scan process is performed when the user turns off the power. However, by incorporating the above process at other occasions, for example, at the initial scan or at the rescan, The end of analog broadcasting can be confirmed.

  As described above, according to the television broadcast receiver according to the present embodiment, it is detected whether or not the analog broadcast is ended, and if the analog broadcast is ended as a result of the detection, the analog broadcast is connected to the network. By disabling the button operation, the terrestrial analog television broadcast can be selected by mistake, and the screen can be prevented from being in a stormy state where the sound becomes a noise. You don't have to think.

  In the above embodiment, the end of analog broadcasting is automatically confirmed. However, a GUI or the like is prepared, and a button for selecting a network for terrestrial analog television broadcasting is set to be invalid, or the user selects terrestrial analog television. When a button for selecting a broadcast network is pressed, the same effect can be obtained by displaying a message such as “This button is invalid” or informing the television screen by voice.

  Next, a television broadcast receiver according to a second embodiment of the present invention will be described with reference to the drawings. The television broadcast receiver according to the present embodiment can be applied to a remote control device having a channel selection button for analog terrestrial television broadcasting. FIG. 4 is a diagram illustrating a configuration example of a remote control device used in the television broadcast receiver according to the present embodiment. As shown in FIG. 4, a remote control device for a television broadcast receiver according to the present embodiment includes a power on / off button 21, a dedicated one-touch button 23 for selecting a terrestrial analog television broadcast service, and a broadcast switching button. 41 and a one-touch button 43 for selecting a digital broadcasting service. The broadcast switching button can sequentially switch the network of terrestrial digital, BS digital, and CS digital.

  FIG. 5A is a flowchart showing the operation flow of the television broadcast receiver according to the present embodiment. FIG. 5B is a diagram illustrating an example of a terrestrial analog channel selection table corresponding to each button of a dedicated one-touch button for selecting a terrestrial analog television broadcast service.

  The television broadcast receiver holds a terrestrial analog channel selection table associated with each of the dedicated one-touch buttons 23 for selecting the terrestrial analog television broadcast service shown in FIG. 5B in the table storage unit 10. ing. In this table, a frequency to be selected, a channel selection flag, and a network identification in digital terrestrial television broadcasting are registered in each button. The channel selection flag indicates whether or not a channel selection operation is performed when the corresponding one-touch button is operated by the user. In addition, network identification in terrestrial digital television broadcasting is an identifier that is used when a broadcasting station that provides a service of the frequency registered in the corresponding one-touch button performs a service in terrestrial digital television broadcasting. Yes, the broadcasting station can be specified.

  Next, a table updating method will be described. In television broadcast receivers, when receiving terrestrial digital broadcasts, it is not known which broadcast stations can be received in the user's residence area.・ Equipped with an initial scan function for checking for absence and a rescan function for registering in a new station's channel list when a broadcasting station is newly opened.

  If a terrestrial digital broadcast is detected during the initial scan or rescan, the process proceeds to the terrestrial analog channel selection table search S21 shown in FIG. 5A, which matches the network identification included in the detected terrestrial digital broadcast stream. Search whether the service is included in the analog tuning table. In the process of S22, a branching process is performed depending on whether or not it is included. If it is included (Y), the channel selection enable / disable flag of the corresponding service is updated to NO in step S23. If not included (N), the process is terminated as it is.

  Next, a control method of the television broadcast receiver using the analog channel selection table updated by the above process will be described. For example, it is assumed that the analog channel selection table shown in FIG. 5B detects the terrestrial digital broadcast having the network identification 0x7FE0 in the above update process, and the channel selection flag is updated as possible. Here, when the user operates (1) of the dedicated one-touch button 23 for selecting the terrestrial analog TV broadcast service, the button (1) is pressed from the remote control receiving unit 11 of the television broadcast receiver. Is input. The control unit 7 receives the signal input from the remote control reception unit 11 and recognizes that the button (1) has been pressed. Here, if it is confirmed that it is not possible to refer to the channel selection flag in the analog channel selection table shown in FIG. 5B, it is determined to be invalid and the process is terminated.

  As described above, according to the television broadcast receiver according to the present embodiment, in the case of a remote control device having a dedicated one-touch button for selecting a terrestrial analog television broadcast service, the terrestrial analog television can be used for digital terrestrial television broadcasting. When the service of a certain channel of broadcasting can be received, it is possible to prevent the channel selection of the terrestrial analog television broadcast by mistake by disabling the channel selection button of the corresponding channel of the terrestrial analog television broadcasting. In addition, after the terrestrial analog TV broadcast has ended, the terrestrial analog TV broadcast can be selected by mistake, and the screen can be prevented from being in a stormy state with a storm-like sound, which can be annoying. I don't have to think about it.

  In the above embodiment, the end of analog broadcasting is automatically confirmed. However, a GUI or the like is prepared, and a button for selecting a terrestrial analog TV broadcast network is set to be invalid, or the user can set the terrestrial analog TV broadcast. When a button for selecting a network is pressed, the same effect can be obtained by displaying “This button is invalid” on the TV screen or notifying by voice. Further, when a terrestrial digital broadcast is detected, a search is made as to whether a service matching the network identification included in the detected terrestrial digital broadcast stream is included in the analog channel selection table. The same effect can be obtained by updating the frequency information registered to the frequency information detected in terrestrial digital broadcasting.

  Further, in the above embodiment, the example of the remote control that does not include the ground A button described in the description of the first embodiment of the present invention has been described. It may be configured to set an invalid flag for invalidating the ground A button when all the channel selection possibility flags in the station table are denied.

  The present invention can be used for a television broadcast receiver capable of selecting a terrestrial analog television broadcast and a terrestrial digital television broadcast.

It is a figure which shows the structural example of the remote control apparatus by the 1st Embodiment of this invention. It is a functional block diagram which shows the general structural example of the television broadcast receiver by embodiment of this invention. It is a flowchart figure which shows the flow of operation | movement of the television broadcast receiver by the 1st Embodiment of this invention. It is a figure which shows the structural example of the remote control apparatus used for the television broadcast receiver by the 2nd Embodiment of this invention. FIG. 5A is a flowchart showing an operation flow of the television broadcast receiver according to the second embodiment of the present invention. FIG. 5B is a diagram illustrating an example of a terrestrial analog channel selection table corresponding to each button of a dedicated one-touch button for selecting a terrestrial analog television broadcast service.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 ... Television broadcast receiver 1, 2 ... Antenna, 3 ... Analog broadcast receiving part, 4 ... Digital broadcast receiving part, 5 ... Video / audio decoding part, 6 ... Switching part, 7 ... Control part, 8 ... Signal presence detection , 9 ... Automatic determination unit, 10 ... Table storage unit, 11 ... Remote control receiving unit, RC ... Remote control device

Claims (6)

A television broadcast receiver capable of receiving terrestrial analog television broadcast and terrestrial digital television broadcast, and at least one of a main body of the television broadcast receiver and a remote control device for remotely operating the main body In a television broadcast receiver having an access button to terrestrial analog television broadcast on one side,
Access to the terrestrial analog television broadcast by the access button when it is detected that the terrestrial analog television broadcast has ended based on scanning of all reception frequency bands of the analog broadcast automatically performed at a predetermined timing Control to disable the operation for
A television broadcast receiver characterized in that, when the operation is disabled, information indicating that the operation is disabled is stored in a memory.   2. The television broadcast receiver according to claim 1, wherein a GUI is displayed on a screen of the television broadcast receiver to prompt selection regarding whether or not to invalidate the operation for the terrestrial analog television broadcast. .   The operation of selecting and invalidating the corresponding analog broadcast on the condition that the digital terrestrial television broadcast service is receivable is associated with the viewing of the corresponding digital terrestrial television broadcast. The television broadcast receiver according to claim 1 or 2.   Based on the information indicating that the reception included in the terrestrial digital television broadcast has become possible, control is performed to disable the one-touch button for selecting the terrestrial analog television broadcast corresponding to the terrestrial digital television broadcast. The television broadcast receiver according to claim 1.   When the operation buttons for accessing the terrestrial analog television broadcast are operated, the operation buttons can be received when broadcasts of all the corresponding terrestrial analog television broadcasts are received in the terrestrial digital television broadcast. The television broadcast receiver according to claim 1, wherein control for invalidating the operation according to claim 1 is performed.   2. The button for selecting a channel of the analog broadcast is disabled when it is determined that a service corresponding to the channel of the analog broadcast can be received by the digital broadcast. The described television broadcast receiver.

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