JP4788402B2 - Digital broadcast receiver - Google Patents

Description

  The present invention relates to a digital broadcast receiver that receives a broadcast by designating a main channel representing a broadcast station and a subchannel representing a broadcast program.

  Conventionally, a channel up / down key provided in an input means such as a remote controller or a numeric key such as a numeric keypad has been used for input for channel selection in a television broadcast receiver. For example, if a user selects a channel sequentially without deciding which channel to view, and when viewing the channel when a favorite program is being broadcast, select the channel using the channel up / down key. Is convenient. On the other hand, when the channel that the user wants to watch is known in advance and it is desired to select the channel quickly, it is appropriate to select the channel using the numeric keys.

  By the way, as TV broadcasting has shifted from analog to digital, the types of broadcasting have diversified, and HD (High Definition) broadcasting using a band for one channel and a band for one channel divided into a plurality of channels are used. SD (Standard Definition) broadcasting and the like are broadcast at any time. At that time, a broadcast to be received is determined by designating a main channel representing a broadcast station and a subchannel representing a broadcast program.

  In a conventional digital broadcast receiver, in order to input a desired channel, a user performs key operations in the order of a main channel number, a determination key, a subchannel number, and a determination key using a remote controller or the like. Therefore, even if only the sub channel is changed while leaving the main channel as it is, it has to be input in order from the main channel. Further, when the channel up / down key is used, the subchannels are switched in order, but it may be necessary to press a plurality of times to obtain a desired subchannel. Various proposals have been made to solve this problem.

For example, Patent Literature 1 discloses that a hyphen is input at the beginning of channel selection and subsequent number input is handled as a subchannel. Thereby, only the sub channel can be changed without changing the main channel.
JP 2002-232796 A

  However, in Patent Document 1, a hyphen key must be provided on the remote control, and the number of keys is further increased on the remote control provided with more keys than before. This increases the size and cost of the remote control, and the hyphen key must be found from many keys, so it cannot be said that the operability is good.

  An object of the present invention is to provide a digital broadcast receiver that can easily change only a sub-channel without increasing the number of operation keys.

  In order to achieve the above object, the present invention is used at least initially in an operation during viewing in a digital broadcast receiver that receives a broadcast by designating a main channel representing a broadcast station and a subchannel representing a broadcast program. When a desired number key is operated together with the sub-channel change auxiliary key at the beginning of the operation during viewing, a predetermined key is not assigned, and only the sub-channel is changed without changing the main channel. It is characterized by switching to broadcasting of the subchannel corresponding to the key.

  According to this configuration, it is possible to change only the subchannel using the subchannel change auxiliary key during viewing.

  In the digital broadcast receiver, the predetermined key can be a clear key, for example.

  The present invention also provides a digital broadcast receiver that receives a broadcast by designating a main channel representing a broadcast station and a sub-channel representing a broadcast program, by assigning a predetermined key that is not used at least initially in an operation being viewed. When the subchannel key is operated at the beginning of the viewing operation, the main channel is not changed and only the subchannel is switched to the broadcasting of the subchannel assigned to the predetermined key. Features.

  According to this configuration, only the subchannel can be changed using the subchannel key during viewing.

  In the digital broadcast receiver, the predetermined key can be, for example, an arrow key.

  Further, the present invention provides a digital broadcast receiver that receives broadcasts by designating a main channel representing a broadcast station and a subchannel representing a broadcast program, and inputs a long press of a numeric key to a subchannel corresponding to the numeric key. When receiving an input by pressing and holding the numeric key at the beginning of the operation being viewed, the main channel is not changed and only the subchannel is switched to the subchannel broadcasting corresponding to the numeric key. Features.

  According to this configuration, it is possible to change only the subchannel using the numeric keys during viewing.

  According to the present invention, by setting the subchannel change auxiliary key, it is possible to easily change only the subchannel by reducing the number of key operations. Further, since the sub-channel change auxiliary key is also used as another key, it is not necessary to add an operation key, and an increase in the size and cost of the remote controller can be suppressed. Furthermore, operability is good because the number of operation keys is small.

  Further, according to the present invention, by setting the subchannel key, it is possible to easily change only the subchannel by reducing the number of key operations. Further, since the subchannel key is also used as another key, it is not necessary to add an operation key, and the increase in size and cost of the remote control can be suppressed. Furthermore, operability is good because the number of operation keys is small.

  Further, according to the present invention, it is possible to easily change only the subchannel by reducing the number of key operations by setting the long press of the numeric key to be recognized as the input of the subchannel. Further, since the numeric keys used for inputting the sub-channel are also used as numeric keys for inputting the main channel and the like, it is not necessary to add an operation key, and the increase in size and cost of the remote controller can be suppressed. Furthermore, operability is good because the number of operation keys is small.

  FIG. 1 is a block diagram showing a configuration of the digital broadcast receiver 10. Reference numeral 11 denotes an operation unit for a user to perform power on / off operations and various operations such as channel selection. Note that the operation unit 11 may be a remote-controllable remote controller. Reference numeral 12 denotes an antenna unit that receives a digital broadcast wave, 13 denotes a tuner unit that selects a broadcast of a desired channel from the digital broadcast wave received by the antenna unit 12, and 14 denotes an output wave from the tuner unit 13 as a digital signal. An A / D converter 15 for converting, and a demodulator 15 for demodulating the output into data.

  Reference numeral 16 denotes a TS demultiplexer that outputs the data demodulated by the demodulator 15 separately for each type, 17 is a RAM that stores the separated data, and 18 is necessary for the operation of the digital broadcast receiver 10. ROM storing various information. Reference numeral 19 denotes a D / A converter that converts audio data in the data stored in the RAM 17 into analog data, 20 denotes an audio signal output unit that outputs audio data analogized by the D / A converter 19, and 21 denotes audio data. This is a speaker that emits sound.

  Reference numeral 22 denotes an MPEG (Motion Picture Experts Group) 2 decoding unit for decoding video data in the data stored in the RAM 17 into video data before compression, and reference numeral 23 denotes an NTSC decoding television set for the decoded video data. An NTSC encoding unit for decoding into a John signal, 24 is a video signal output unit for outputting the NTSC decoded television signal, and 25 is a display for displaying video. Reference numeral 26 denotes an MPU that controls the operation of the digital broadcast receiver 10.

  Next, an operation when the digital broadcast receiver 10 receives a broadcast will be described. First, the transmitted digital broadcast wave is received by the antenna unit 12. When the operation unit 11 is selected, the tuner unit 13 switches the transponder to be received. The received digital broadcast wave is digitized by the A / D converter 14 and the data is demodulated by the demodulator 15.

  Originally, a digital signal is transmitted in the form of a TS (Transport Stream) packet from the transmission side. The TS packet is composed of control data including video data, audio data, channel data (data relating to the main channel and subchannel), and the control data is separated and output by the TS demultiplexer 16 and stored in the RAM 17. Then, the audio data read from the RAM 17 is converted into an analog signal by the D / A converter 19 and the sound is emitted from the speaker 21 via the audio signal output unit 20.

  The video data read from the RAM 17 is decoded into video data before compression by the MPEG2 decoding unit 22, decoded into an NTSC decoded television signal by the NTSC encoding unit 23, and the video is output to the display 25 via the video signal output unit 24. indicate.

  Next, FIG. 2 shows a plan view of the remote controller when the operation unit 11 is a remote controller. The remote controller 30 is configured to be able to instruct the operation of the digital broadcast receiver 10 using infrared rays or the like. That is, a power key 31 for turning on / off the power of the digital broadcast receiver 10, a number key 32 for inputting a channel number to be received, a channel up / down key 33 for sequentially selecting a channel, and a menu key for calling a menu screen 34, an arrow key 35 (35a to 35d) for moving the cursor in a desired direction, an enter key 36 for confirming an input, a volume up / down key 37 for adjusting an audio volume, and a setup key 38 for calling a setup screen , And a clear key 39 for deleting the number input immediately before when the number key 32 is input incorrectly.

  Next, the operation at the time of subchannel tuning in the digital broadcast receiver 10 will be described by taking three embodiments as examples. Hereinafter, the numbers of the main channel and the subchannel are separated by “−”. For example, when the main channel is 12 and the subchannel is 3, the number is denoted as “12-3”. Usually, there are 1 to 4 subchannels.

<First Embodiment>
In the first embodiment, a predetermined key that is not used at least initially in an operation during viewing is assigned as a subchannel change auxiliary key, and a desired numeric key 32 is operated together with the subchannel change auxiliary key at the beginning of the operation during viewing. In this case, the main channel is not changed and only the sub-channel is switched to the sub-channel broadcasting corresponding to the numeric key 32.

  The sub-channel change auxiliary key is to switch to the sub-channel of the numeric key in which only the sub-channel is pressed without changing the main channel by pressing the desired numeric key 32 while pressing the sub-channel change auxiliary key during viewing. It is a key for. As the subchannel change auxiliary key, a key that is not used at least initially in an operation being viewed may be assigned. For example, the clear key 39 and the arrow key 35 of FIG. 2 can be used together.

  For example, a clear key 39 is assigned as a subchannel change auxiliary key. For example, when the user wants to switch from viewing the 12-1 channel to the 12-4 channel, the user may press the numeric key 32 “4” while holding down the clear key 39. Accordingly, the digital broadcast receiver 10 determines that there is an instruction to change the subchannel to “4”, and immediately switches to the 12-4 channel.

  Conventionally, the number key 32 “1”, the number key “2”, the enter key 36, the number key “4”, and the enter key 36 are operated in this order, or the channel up / down key 33 channel up key However, by setting the subchannel change auxiliary key as in this embodiment, it is possible to easily change only the subchannel by reducing the number of key operations.

  Further, since the subchannel change auxiliary key is also used as another key, it is not necessary to add an operation key such as a hyphen key as in Patent Document 1, and the increase in size and cost of the remote control can be suppressed. In addition, operability is good because the number of operation keys is small.

<Second Embodiment>
In the second embodiment, a predetermined key that is not used at least first in an operation being viewed is assigned as a predetermined subchannel key, and the main channel is changed when the subchannel key is operated at the beginning of the operation being viewed. Without switching, only the subchannel is switched to the broadcast of the subchannel assigned to the predetermined key.

  The subchannel key is a key for switching only the subchannel to the broadcast of the number of the subchannel assigned to the pressed subchannel key without changing the main channel by pressing the subchannel key during viewing. It is. As the sub-channel key, a key that is not used at least initially in an operation being viewed may be assigned. For example, the arrow key 35 of FIG.

  For example, arrow keys 35a to 35d are assigned to subchannels 1 to 4 in order as subchannel keys. For example, when the user wants to switch from viewing the channel 12-1 to the channel 12-4, the user may press the arrow key 35d. Accordingly, the digital broadcast receiver 10 determines that there is an instruction to change the subchannel to “4”, and immediately switches to the 12-4 channel. Since the subchannel numbers are not determined as 1 to 4, the arrow keys 35a to 35d may be assigned in ascending order of the subchannel numbers.

  Conventionally, the number key 32 “1”, the number key “2”, the enter key 36, the number key “4”, and the enter key 36 are operated in this order, or the channel up / down key 33 channel up key However, by setting the subchannel key as in this embodiment, it is possible to easily change only the subchannel by reducing the number of key operations.

  Further, since the sub-channel key is also used as another key, it is not necessary to add an operation key such as a hyphen key as in Patent Document 1, and an increase in the size and cost of the remote control can be suppressed. In addition, operability is good because the number of operation keys is small.

<Third Embodiment>
In the third embodiment, when an input by long press of the numeric key 32 is assigned as a subchannel number corresponding to the numeric key 32, an input by long press of the numeric key 32 is received at the beginning of the operation being viewed. The main channel is not changed, and only the sub channel is switched to the sub channel broadcast corresponding to the numeric key 32 described above.

  The long press of the number key 32 means a state in which the same number key 32 is continuously pressed for a predetermined time (for example, 2 seconds). Assigning as the number of the subchannel corresponding to the numeric key 32 means controlling the long press of each numeric key 32 to be recognized as a subchannel having the same number as the numeric key 32. However, in order to distinguish from the input of the main channel, control is performed so that the input is recognized as the input of the subchannel number only when the numeric key 32 is pressed and held at the beginning of the operation being viewed.

  For example, when the user wants to switch from viewing the 12-1 channel to the 12-4 channel, the user may press and hold the numeric key 32 “4”. Accordingly, the digital broadcast receiver 10 determines that there is an instruction to change the subchannel to “4”, and immediately switches to the 12-4 channel.

  Conventionally, the number key 32 “1”, the number key “2”, the enter key 36, the number key “4”, and the enter key 36 are operated in this order, or the channel up / down key 33 channel up key It is necessary to press the key three times. However, as in this embodiment, by setting the keypad to be recognized as a subchannel input, the number of key operations can be reduced and only the subchannel can be easily Can be changed.

  Further, since the numeric key 32 used for inputting the sub-channel is also used as the numeric key 32 for inputting the main channel or the like, it is not necessary to add an operation key such as a hyphen key as in Patent Document 1, and the remote controller Increase in size and cost can be suppressed. In addition, operability is good because the number of operation keys is small.

  INDUSTRIAL APPLICABILITY The present invention can be used for a digital broadcast receiver that receives a broadcast by designating a main channel representing a broadcast station and a subchannel representing a broadcast program, and a video apparatus and an optical disc capable of receiving digital broadcasts including digital television. The present invention can be applied to a device, a hard disk device, or a multifunction device thereof.

It is a block diagram which shows the structure of a digital broadcast receiver. It is a top view of a remote control.

Explanation of symbols

10 Digital Broadcasting Receiver 32 Number Key 35 Arrow Key (Subchannel Key)
39 Clear key (Sub channel change auxiliary key)

Claims (1)

In a digital broadcast receiver that receives a broadcast by designating a main channel representing a broadcast station and a sub-channel representing a broadcast program,
Assign clear key as sub channel change auxiliary key,
The first operation being watched, if the desired number key while pressing the clear key is pressed, characterized in that the switching of the only sub-channel to a broadcast of the sub-channel corresponding to the number keys without the main channel is changed Digital broadcast receiver.

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