JP4958430B2 - Broadcast receiver - Google Patents

Description

The present invention relates to a broadcast receiving apparatus that receives a multi-channel broadcast .

  In recent years, broadcast receiving apparatuses that receive digital radio broadcasts and satellite digital broadcasts are known (see, for example, Patent Document 1). In digital broadcasting from a satellite, a service for providing programs of 150 channels or more is also provided, and multi-channel broadcasting of about 250 channels is also possible. In order to select a desired channel at high speed while a multi-channel broadcast is provided, a broadcast receiving apparatus is known in which a channel number for selecting a channel on a display unit is sequentially displayed while being fast-forwarded. .

  In the broadcast receiving apparatus as described above, when the channel number fast-forward is instructed via the operation unit or the like, the channel number is incremented by “1” at every predetermined timing and sequentially displayed while being decreased. Then, when the channel number displayed on the display unit reaches a desired number, when the operation unit or the like instructs to cancel the fast-forward operation of the channel number, the channel number displayed at that time is selected. Can be done.

In addition, as the number of channels that can be selected increases, switching of channel numbers displayed on the display unit in order to perform channel selection at high speed is performed at high speed within a visible range. For example, the channel number is incremented by “1” every 0.1 second or displayed while being decreased.
JP 2002-354285 A

  However, when the displayed channel number transitions at high speed, the user needs to stare at the display unit in order to select a desired channel number. For example, it is not preferable for the driver to stare at the display unit or the like in order to select a desired channel number from such a multi-channel radio broadcast in a vehicle-mounted broadcast receiving device or the like because it may hinder driving. .

  In many cases, the number of channel numbers (for example, about 150) to which broadcasting is actually allocated is smaller than the number that can be allocated as channel numbers (for example, 255). However, if the display is performed while the channel number is changed by “1”, the channel numbers to which no broadcast is assigned are also sequentially displayed. In addition, when the fast-forward operation is canceled, there is a possibility of selecting a channel number that cannot receive the broadcast. When broadcast is not assigned to the selected channel number, the user has to fast-forward the display of the channel number again to perform the channel selection operation, resulting in a problem that the operability is impaired.

Accordingly, an object of the present invention is to provide a broadcast receiving apparatus that can improve the visibility of the channel number displayed on the display unit at the time of channel selection and improve the operability.

In order to solve the above problems, in a broadcast receiving apparatus mounted on a vehicle, an operation unit for selecting a channel number of a broadcast station to receive, a display unit for displaying the channel number, and the operation unit for a predetermined time. When the operation is continued for a longer time, the lower m-digit number of the channel number is incremented by n ₂ to display a higher-order digit number than the lower (m-1) digit (where m is An integer of 2 or more, n ₂ is an integer of −9 to −2 and an integer of 2 to 9, and the number of digits lower than the lower m-th digit is controlled and broadcast is assigned. A control unit that performs control to hide channel numbers of broadcasting stations that are not present, and when the control unit finishes the continuous operation of the operation unit and displays the channel number on the display unit, m-1) The number displayed in the digit Control is performed by selecting and displaying the smallest number to which broadcasting is assigned or the largest number among channel numbers equal to the number of the digit higher than the lower (m-1) digit. To do.
According to the above configuration, since the lower m-th number of the channel number is incremented by n _{2 at} every predetermined timing and displayed, as compared with the case where the display is switched while incrementing the channel number by “1”, The display of the channel number is switched at a timing that does not impair the visibility. Further, when displaying channel numbers, channel numbers to which broadcasts are not assigned are not displayed, so channel numbers that cannot be selected by the user are not displayed.

  In this case, the control unit may be controlled to display the number of the digit lower than the lower m-th digit of the channel number with a predetermined symbol.

Further, the broadcast receiving apparatus having any one of the above configurations includes a storage unit that stores information indicating whether a broadcast is assigned to a predetermined channel number, and the control unit stores the information in the storage unit. Based on the information, it may be determined whether a broadcast is assigned to the predetermined channel number.
Alternatively, the control unit may determine whether or not a broadcast is assigned to a predetermined channel number based on information included in the received broadcast radio wave.

  According to the present invention, the visibility of the channel number displayed on the display unit is enhanced, and the operability during channel selection is improved.

Next, preferred embodiments of the present invention will be described in detail with reference to the drawings.
FIG. 1 is a block diagram showing a schematic configuration of a broadcast receiving apparatus according to the present embodiment.
In the present embodiment, as an example of a broadcast receiving device, a satellite radio receiving device that receives radio waves from a broadcasting satellite, and only those who satisfy the predetermined requirements for member registration or the like receive broadcast waves. A broadcast receiving apparatus used in a possible radio broadcast service will be described.

  A broadcast receiving apparatus 100 shown in FIG. 1 includes an antenna 1 that receives a broadcast radio wave (RF signal) from an artificial satellite (not shown), and digital that digitally modulates an RF signal received via the antenna 1 (ASK, FSK, PSK, etc.). Modulation unit 2, digital signal processing unit 3 that performs signal processing on the digitally modulated RF signal, microcomputer 4 that centrally controls the operation of broadcast receiving apparatus 100, operation unit 5 that receives operation instructions from the user, and microcomputer A display unit 6 for performing various displays such as a display relating to a currently selected channel number or an operation menu based on an instruction signal output from 4, and a digital signal processed by the digital signal processing unit 3 as an analog signal DA converter 7 for conversion, analog signal output from DA converter 7 and various command signals output from microcomputer 4 And a BUS circuit 8 to be outputted to other devices.

  The digital signal processing unit 3 converts an analog signal output from the digital modulation unit 2 into a digital signal, and decodes a predetermined signal included in the signal input from the AD conversion unit 31 to arrange data. Transport layer decoding unit 32 that performs error correction, retransmission request, etc., and information on the channel assignment and services at present by decoding predetermined signals included in broadcast radio waves input via the transport layer decoding unit A service layer decoding unit 33 that decodes information such as whether the current state is present and outputs the decoded information to the microcomputer 4.

  Here, the information regarding the current state of the service is, for example, that the broadcast receiving apparatus 100 pays a predetermined reception fee or the like and only a member registered as a member receives a predetermined broadcast radio wave. When a radio service that can be used is assumed, the information includes whether or not the user is a person who can receive a broadcast, a channel number that can be received by the user, and the like.

The microcomputer 4 includes a system control unit 41, a memory 42, and a BUS communication interface unit 44.
The memory 42 stores, for example, various programs such as a control program for centrally controlling the broadcast receiving apparatus 100 and a control program for performing a channel number fast-forward process described later. In addition, the memory 42 holds a channel assignment table 43 created based on information on channel assignment acquired by the service layer decoding unit 33.

The channel assignment table 43 is used to determine whether or not a broadcast is assigned to a predetermined channel number when executing a fast-forward process for displaying a channel number, which will be described later. It is a table which shows the information regarding the presence or absence of allocation (information regarding the validity of all channels). For example, when all channel numbers provided in the radio broadcast service are “001” to “255”, information on whether or not broadcasts are assigned to the individual channel numbers or whether the user can view or not is associated. It has been memorized.
By storing such a channel assignment table 43 in the memory 42 in advance, it can be performed by referring to the channel assignment table 43 when determining whether or not a broadcast is assigned to a predetermined channel number. In the service layer decoding unit 33, it is possible to determine the presence / absence of broadcast assignment earlier than acquiring information on channel assignment each time.

  The BUS communication interface unit 44 is a communication interface for connecting to other units via the BUS circuit 8.

  The operation unit 5 is an operation button (hereinafter referred to as “+ button”) for changing the channel number of a receiving broadcast station (channel) to be increased or an operation button (hereinafter referred to as “− button”) for changing to a decreasing direction. Etc.) are provided. By pressing these operation buttons, the user can select a broadcast station to receive. In the present embodiment, when the user presses the “+ button” once for a predetermined time, the selected channel number is increased by “1” and the “− button” is pressed once. Then, the selected channel number is decreased by “1”. Also, by continuing to press the “+ button” or the “− button” for longer than the predetermined time, that is, by so-called long pressing, it is possible to start channel number display fast-forward processing, which will be described later.

  The display unit 6 is composed of, for example, a liquid crystal panel or the like, and displays information related to various operation menus, the channel number of the currently receiving broadcast station, the program name, and the like. In addition, when the received broadcast radio wave includes information such as the name of music to be broadcast and the name of an artist, such information can also be displayed.

  Next, with reference to FIG. 2, the channel number display fast-forward process executed in the broadcast receiving apparatus 100 under the control of the microcomputer 4 will be described. This process is performed to select a broadcast station to be received by the user. When the “+ button” is pressed once, the ten digit number of the channel number is automatically incremented by “1”. These are sequentially displayed at a predetermined timing (for example, 1 second). Then, when the user or the like performs an operation for canceling the fast-forward process through the operation unit 5, the process ends and the display of the channel number is fixed.

  FIG. 2 is a flowchart of the channel number display fast-forward process. As shown in FIG. 2, when the channel number display fast-forward process is started, the microcomputer 4 increases the ten-digit number of the current channel number by “1” (step S1). At this time, when the ten-digit number is incremented by “1” and becomes larger than the maximum channel number provided in the radio broadcast service, that is, the microcomputer 4 refers to the channel allocation table 43 to If it is determined that the channel number does not exist in the radio broadcast service (step S2: N), the microcomputer 4 sets all the digits of the digits higher than the lower first digit (that is, the lower second digit and the lower third digit). "0" is set (step S3).

  Next, it is determined whether or not a broadcast is assigned to each channel number having the same number in the higher digit than the first digit of the channel number (step S4). When there is a broadcast assignment (step S4: Y), the number of the higher digit than the lower first digit of the channel number is displayed on the display unit 6, and the lower first digit number is not displayed (step S5). ). At this time, a predetermined symbol (for example, a symbol such as “-”) may be displayed in place of the lower first digit number to indicate that the lower first digit number is not fixed.

  On the other hand, when there is no broadcast assignment for any channel number having the same number of the upper digit than the first digit (step S4: N), the process of displaying the channel number (step S5) is performed. The process returns to steps S1 to S4 again.

  Then, after the channel number is displayed for the digit higher than the lower first digit, the processes in steps S1 to S6 are repeated until the fast-forward process is canceled (Y in step S6). When fast-forwarding is cancelled, the channel number is displayed for the number of the first digit in addition to the number of the digit higher than the first digit displayed in step S5 (step S7). The process ends.

  Note that the lower first digit of the channel number displayed on the display unit 6 by the microcomputer 4 at the end of the process is, for example, the most assigned channel number among the channel numbers having the same higher digit number than the lower first digit. A small number of channel numbers may be displayed, or the largest number of channel numbers may be displayed. For example, when the fast-forward process is executed so that the channel number is displayed while being fast-forwarded in the ascending order by pressing and holding the “+ button”, the lowermost channel number displayed when the process is canceled is displayed. If the number with the smallest digit is displayed, the operability is good. On the other hand, when the channel number is displayed while fast-forwarding in descending order by pressing and holding the “-button” as described later, the first digit of the channel number displayed when the processing is canceled is displayed. If the largest item is displayed, the operability is good.

  Further, a predetermined number may be displayed based on the timing when cancellation of the fast-forward process is instructed. After the fast-forward process is canceled, the user can select the channel number to be selected in more detail by pressing the “+ button” or the “− button” briefly once.

  The timing for switching the display of the channel number is not particularly limited, but is desirably a time interval that does not cause difficulty in visibility (for example, 1 second).

  Next, according to the flowchart shown in FIG. 2, an example of the transition state of the display content displayed on the display part 6 is shown in FIG. 3 and FIG.

  In FIG. 3, the channel number selected before the start of processing is assumed to be “025”. In this case, the display 6 displays a display indicating that the channel number is “025” (CH025), a display indicating the program name of the channel number (CHAN: The Blend), and the like (steps). S11).

  When the channel number display fast-forward process is started, since the currently selected channel number is “025”, “1” is added to “2” which is the ten-digit number (see step S1 in FIG. 2). ). Next, based on the channel assignment table 43, whether or not each channel number (“030” to “039”) having a digit number higher than one digit is “03” exists in this radio broadcast service. Determination is made (see step S2 in FIG. 2). In the case shown in FIG. 3, since channel numbers “030” to “039” exist (step S2: Y), the broadcast numbers corresponding to the channel numbers “030” to “039” are next based on the channel assignment table 43. The presence or absence of assignment is determined by the microcomputer 4 (see step S4). In the case of FIG. 3, since there is a channel number to which broadcast is assigned (step S4: Y), “03” indicating the number of the digit higher than the first digit of the channel number is displayed on the display unit 6. (Step S12 in FIG. 3). At this time, the number of one digit is not displayed, and “-” is displayed instead.

  Similarly, in the case shown in FIG. 3, the channel number (“040” to “049”) in which the higher digit number than “1” is “04”, and the higher digit number is higher than the first digit. At least one channel number (“050” to “059”) that is “050” and each channel number (“060” to “069”) that has a higher-order digit number than “06” are also included. Since there is a channel number to which broadcasting is assigned, the display on the display unit 6 is switched in the order of “04-”, “05-”, “06” by the control of the microcomputer 4 at every predetermined timing ( Step S13 to Step S15).

  When the channel number display fast-forward process is canceled while “06” is displayed, broadcast is assigned to the display unit 6 among the channel numbers “060” to “069”. The smallest channel number is displayed. FIG. 3 shows a case where the broadcast is assigned to the channel number “060”.

  On the other hand, for example, when a broadcast is not assigned to any of the channel numbers “030” to “039”, an example of the transition state of the display content displayed on the display unit 6 by the fast-forward process is shown in FIG. Shown in

  When the fast-forward process is started when the channel number selected before the fast-forward process of the channel number display is “001”, the channel number “001” is displayed on the display unit 6 ( Step S21). At this time, as shown in FIG. 4 (step S21), a display (for example, “Preview”) indicating that the fast-forward process has started may be performed on the display unit 6.

  When the fast-forward process is started, as in the case shown in FIG. 3, the microcomputer 4 increments the ten-digit number of the currently selected channel number “001” sequentially by “1” by one digit. Only the higher digit number is changed and displayed on the display unit 6 at predetermined timings such as “CH01−”, “CH02−”,... (Step S22, step S23).

  Here, the channel number to be displayed next to “CH02-” is “CH03-”. However, as described above, broadcasts are not assigned to the individual channel numbers “030” to “039”. The microcomputer 4 does not display “CH03−” on the display unit 6 and further increases the ten-digit number of the channel number by “1” (step S1 in FIG. 2). In the case shown in FIG. 4, since broadcasting is assigned to at least one of the channel numbers (“040” to “049”) having a higher digit number “04” than the first digit (step). S4: Y), the microcomputer 4 displays “CH04−” on the display unit 6 (step S24).

When the channel number display fast-forward process is canceled at the stage where “CH05-” is displayed (step S25), broadcasts are assigned among the channel numbers from “050” to “059”. The smallest number among the channel numbers is displayed on the display unit 6.
FIG. 4 shows a case where a broadcast is assigned to the channel number “050” (program name: “The Loft”).

  Next, a case where the channel number display fast-forward process is started by long-pressing the “− button” provided in the operation unit 5 will be described. In this case, the ten digit number of the channel number is decreased by “1” in step S1 shown in FIG. Except for the point that the channel number is changed to the maximum number among the channel numbers existing in FIG.

  FIG. 5 shows an example of the transition state of the display content on the display unit 6 when the channel number display fast-forward process is performed while the tens digit of the channel number is decreased by “1”. In step S31, an example in which the currently selected channel number is “025” is shown.

  When the channel number display fast-forward process is started, “1” is subtracted from “2”, which is the ten-digit number of the currently selected channel number “025”. Then, the microcomputer 4 refers to the channel assignment table 43 for the channel number (“019” to “010”) whose digit number higher than the first digit is “01” and determines whether or not broadcast is assigned ( (See step S4 in FIG. 2). In the case shown in FIG. 5, since there is a channel number to which broadcast is assigned (step S4; Y), the microcomputer 4 displays the number of the digit higher than the first digit on the display unit 6 and for one digit, “ “-” Is displayed. That is, “01−” is displayed on the display unit 6 (step S32).

  Similarly, in the case of FIG. 4, since broadcasting is assigned to at least one of the channel numbers (“009” to “001”) whose number of the digit higher than the first digit is “00”. The microcomputer 4 displays “00−” on the display unit 6 (step S33).

  Next, since the channel number obtained by subtracting “1” from “0”, which is a ten-digit number, does not exist in the channel assignment table 43, the channel number higher than the first digit of the channel number is assigned to the channel number. The maximum number existing in the allocation table 43 is set to “25”. Then, whether or not there is a number to which broadcast is assigned to the channel number (“250” to “255”) having the number of the digit higher than the first digit existing in the channel assignment table 43 being “25”. Is determined (step S4 in FIG. 2). In the case shown in FIG. 5, since there is a number to which broadcasting is assigned, "25-" is displayed on the display unit 6 by the microcomputer 4 (step S34). Then, according to the same procedure, when broadcasting is assigned to at least one of the channel numbers whose upper digit number is “24”, the display unit 6 is next to “25−”. “24-” is displayed on the display (step S35).

  When the channel number display fast-forward process is canceled at the stage where “24-” is displayed, the channel numbers from “249” to “240”, for example, among the channel numbers to which broadcasting is assigned, The largest number is displayed (FIG. 5 shows the case of “240” (program name: TrafficIc) (step S36)).

  According to the embodiment described above, the number of the digit higher than the first digit is displayed while the ten digit number of the channel number is incremented by “1” every predetermined timing, and the number of one digit is displayed. Is not displayed, channel number display can be switched at a timing that does not impair visibility as compared to switching the display while increasing the channel number by “1”.

  Also, when channel numbers are fast-forwarded and displayed for channel selection operation, channel numbers to which broadcasts are not assigned are not displayed, so channel numbers that cannot be selected by the user are not displayed, and operations during channel selection Can be improved.

  Further, in the present embodiment, display is performed while incrementing or decrementing the ten-digit number by “1” while incrementing or decrementing the channel number by “10”. When selecting, it is possible to search in units of ten digits, and operability is good.

  In the above description, the broadcast receiving apparatus 100 has been described by taking a satellite radio receiving apparatus that receives radio waves from satellite broadcast as an example. However, the present invention is not limited to the present embodiment, and terrestrial digital television is provided. Broadcast, satellite digital TV broadcast, VHF TV broadcast, UHF TV broadcast, satellite analog TV broadcast, Internet TV broadcast, terrestrial digital radio broadcast, AM shortwave radio broadcast, AM medium wave radio broadcast, FM radio broadcast, satellite analog radio broadcast, Internet The present invention can be applied to a broadcast receiving apparatus that receives a radio broadcast or the like, and particularly suitable for displaying a channel number to be selected on a display unit or the like at high speed when a multi-channel broadcast is provided.

In the above description, the example in which the lower second digit of the channel number is incremented by “1” or the number by “−1” is incremented when the channel number display fast-forward process is executed. It is not limited. For example, when the channel number provided by a radio broadcast service or the like is “1000” or more, the lower second digit of the channel number may be increased by “2”, or the lower three digits may be used. The eye number may be increased by “1”. In short, increase the number of the lower m digit by n ₂ and display the number of the higher digit than the lower (m-1) digit, and the lower digit of the lower (m-1) digit. As long as it is configured so as not to display (where m is an integer of 2 or more, n ₂ is an integer other than 0 and ± 1). By adopting such a configuration, the display of the channel number can be switched at a timing that does not cause difficulty in visibility.

Further, in addition to the above configuration, when executing a fast-forward process or the like when selecting a channel number, the number of the first digit of the channel number displayed on the display unit 6 is incremented by “5” or more. The predetermined constant n ₁ (where n ₁ is an integer other than 0 and ± 1) is incremented by one, and when the broadcast is not assigned to the channel number to be displayed next, the channel number is displayed on the display unit 6. It is good also as a structure which is not displayed on.

  In the above description, the number of the lower first digit (the lower digit than the lower m-th digit) is indicated by “−”, but the present invention is not limited to this. In the channel number display fast-forward process, a desired symbol can be appropriately displayed for a digit number that is not displayed, or the display itself need not be performed.

  Further, in the above description, the case where the channel number display is fast-forwarded at the time of channel selection operation has been described as an example, but not only at the time of channel selection operation, the case where channel numbers are displayed sequentially, or the frequency band to be received Needless to say, the present invention can be applied to the case where the frequencies are sequentially displayed at the time of selection.

  In the above description, the operation unit 5 and the display unit 6 are directly connected to the system control unit 41. However, the operation unit 5 and the display unit 6 are configured as an external unit of the broadcast receiving apparatus 100, and a BUS circuit. 8 may be configured to be connected to the broadcast receiving apparatus 100.

It is a general | schematic block diagram of the broadcast receiver in embodiment. It is a processing flowchart of an embodiment. It is a figure which shows an example of the transition state of the display content displayed on a display part by the process performed in embodiment. It is a figure which shows the other example of the transition state of the display content displayed on a display part by the process performed in embodiment. It is a figure which shows the further another example of the transition state of the display content displayed on a display part by the process performed in embodiment.

Explanation of symbols

1 Antenna 2 Digital Modulation Unit 3 Digital Signal Processing Unit 4 Microcomputer (Control Unit)
DESCRIPTION OF SYMBOLS 5 Operation part 6 Display part 7 DA conversion part 8 BUS circuit 31 AD conversion part 32 Transport layer decoding part 33 Service layer decoding part 41 System control part 42 Memory 43 Channel allocation table 44 BUS communication interface part 100 Broadcast receiving apparatus

Claims (4)

In a broadcast receiving apparatus mounted on a vehicle, an operation unit for selecting a channel number of a receiving broadcast station, a display unit for displaying the channel number, and the operation unit are continuously operated for a time longer than a predetermined time. When the channel number is increased, the number of the lower m-th digit of the channel number is incremented by n ₂ to display the number of the higher digit than the lower (m−1) -th digit (where m is an integer of 2 or more, n ₂ Is an integer from -9 to -2 and from 2 to 9, but the number of digits lower than the lower m-th digit is controlled to be hidden, and the channel number of the broadcasting station to which broadcasting is not assigned is A control unit that performs control for non-display, and the control unit finishes the continuation operation of the operation unit and displays the channel number on the display unit in the lower (m−1) digit. The number to be displayed is higher than the lower (m-1) digit. A broadcast receiving apparatus that performs control to select and display a minimum number to which a broadcast is assigned or a maximum number among channel numbers equal to the number of the place digit . 2. The broadcast receiving device according to claim 1, wherein the operation unit includes an ascending order operation and a descending order operation, and the control unit displays the channel number on the display unit after the continuation operation of the operation unit ends. When the operation by the operation unit is an ascending operation, the minimum number is selected, and when the operation by the operation unit is a descending operation, the maximum number is selected . 3. The broadcast receiving apparatus according to claim 1 , further comprising a storage unit that stores information indicating whether or not a broadcast is assigned to a predetermined channel number, and the control unit stores information stored in the storage unit. A broadcast receiving apparatus that determines whether or not a broadcast is assigned to the predetermined channel number based on the above . 3. The broadcast receiving apparatus according to claim 1 , wherein the control unit determines whether a broadcast is assigned to a predetermined channel number based on information included in a received broadcast radio wave. Broadcast receiving device.

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