JP4076679B2 - Broadcast receiver - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention provides a receiving means for receiving a transmission signal having a character information signal including a normal character string and a blank character string, and converts the character information signal received by the receiving means into a character based on each character string. The present invention also relates to a broadcast receiving apparatus including display means for displaying within a predetermined area.
[0002]
[Prior art]
Conventionally, a receiving means for receiving a transmission signal having a character information signal including a character string and a blank character string, such as a receiver for DAB broadcasting (Digital Audio Broadcasting) implemented in Europe, and the reception There is known a broadcast receiving apparatus including display means for converting the character information signal received by the means into characters based on the character strings and displaying the characters in a predetermined area.
[0003]
In this DAB broadcasting, a plurality of programs can be broadcast on one frequency (broadcast station), and all the programs are collectively referred to as an ensemble.
[0004]
In one ensemble, as shown in FIG. 2A, a unit of one program is called a service and includes a plurality of services (service 1 to service n). The number of services varies depending on the broadcasting station. Each service 1 to service n is composed of one or more contents called service components (for example, primary services α to n and secondary services α ′ and β ′).
[0005]
At this time, when a service includes a plurality of service components, the main service component is called a primary service, and all the others are called secondary services.
[0006]
For example, a certain content is broadcast in English as a primary service, and the same content is broadcast in German as a secondary service. Alternatively, the status of the top group is broadcast on the primary service, and the status after the second group is broadcast on the secondary service, such as in a marathon broadcast.
[0007]
On the other hand, a 16-character label (for example, the name of an organization or the name of a broadcasting station performing DAB broadcasting) called an ensemble label (character information signal) is added to the ensemble.
[0008]
Similarly, each service has a 16-character label (for example, “○ △ × Radio 1”, “○ X △ production”, etc.), the name of the organization that produces the service. Etc.) is added.
[0009]
In addition, each service component has a 16-character label called a service component label (character information signal) broadcast by each service component (for example, in the previous marathon relay, “X ○ Δ Marathon” or secondary label “Second group” or the like as a label is added.
[0010]
The above-described ensemble label, service label, and service component label are collectively referred to as “label” hereinafter. The 16-character label described above is configured as a 16-character information signal by a normal character string composed of actual characters such as alphanumeric characters and a blank character string composed of other blank character codes. Is transmitted from the broadcast station as a transmission signal superimposed on the information signal.
[0011]
At this time, for example, a blank character code used as a separator between words such as a blank character code inserted between “Second” and “group” of “Second group” is treated as a normal character, The whole “Second group” becomes one normal character string.
[0012]
On the other hand, as shown in FIG. 7A, the display means 1 described above has an index M of a label string for 16 characters._i16 display buffers J individually corresponding to (i = 0, 1, 2,... 15)₀~ J₁₅Are arranged.
[0013]
For example, when superimposing the character name “○ × Δ □” as a normal character string of an ensemble label on a character information signal transmitted from a ○ × Δ □ broadcast station that performs DAB broadcasting, In the normal character string “◯ × Δ □”, no blank character string is inserted before the character string “◯ × Δ □”, and a blank character string of the remaining number of characters (16−4 = 12 characters) is superimposed and transmitted.
[0014]
Therefore, as shown in FIG. 7B, the display means 1 has an index M.₀Buffer “J” coded as “” is located at the left end of the display area₀And index M₁"X" coded as is buffer J₁And index M₂"△" coded as is buffer J₂And index M_Three"□" encoded as buffer J_ThreeIs displayed. Other buffers J_Four~ J₁₅Has an index M_Four~ M₁₅A blank character coded as is displayed (appears nothing is displayed). Hereinafter, the code of the blank character is a blank character code (code number “20H”).
[0015]
Similarly, when a character information signal transmitted from a broadcasting station that conducts DAB broadcasting is transmitted as a normal character string of an ensemble label, the broadcasting station name “XX × □□” 2 characters-4 characters-10 characters (see FIG. 7C) or 8 characters-4 characters-4 characters (see FIG. 7D) in the order of blank character string-normal character string-blank character string. Each character string is superimposed, or each character string of 12 characters-4 characters (see FIG. 7E) is superimposed and transmitted in the order of blank character string-normal character string.
[0016]
FIG. 8 shows a data format model of the received character string on the character string signal information receiving means. In FIG. 8, the character information signal is superimposed with a blank character string with a number of blank characters, a normal character string with n normal characters, and a blank character string with b blank characters, and the total number of characters (a + n + b) is 16 characters. is there.
[0017]
In addition, both ends of the normal character string (M_aAnd M_{a + n-1}) Is a character code other than a space character code, and an arbitrary character code including a space character code is arranged as the character code sandwiched between them. In most actual broadcasts, a = 0.
[0018]
[Problems to be solved by the invention]
By the way, in the above-described broadcast receiving apparatus, when the character information signal transmitted as a normal character string of an ensemble label is received and displayed on the display means 1 as a broadcast station name “○ × Δ □”, for example, As shown in FIGS. 7B and 7E, when displayed near the right end or left end of the display area of the display means 1, especially when the number of characters displayed as a normal character string is small. However, there has been a problem that it is difficult to recognize the display contents by instantaneously reading the display characters.
[0019]
Moreover, as shown in FIGS. 7B to 7E, even when the display position differs depending on the character information signal, the display characters can be instantaneously read to recognize the display contents. Have difficulty.
[0020]
In order to solve the above problem, the present invention provides a broadcast receiving apparatus that can always display a display character in the center of the display area regardless of the transmitted character information signal and can improve the recognition of the display character. The purpose is to provide.
[0021]
[Means for Solving the Problems]
  To achieve the object, the invention according to claim 1 is characterized in that a receiving means for receiving a transmission signal having a character information signal including a normal character string and a blank character string, and the character information received by the receiving means. In a broadcast receiving device comprising display means for converting a signal into a character based on each character string and displaying it within a predetermined area,
  First blank character number detecting means for detecting the number of blank characters to be displayed near one end of one area of the display means among the blank character strings included in the character information signal, and the character information signal including the character information signal. Of the blank character string, the number of characters detected by the second blank character number detecting means for detecting the number of blank characters to be displayed near the other region end of the display means, and the number of characters detected by the first and second blank character number detecting means. An arithmetic means for adding and averaging, and a blank character string of the number of characters averaged by the arithmetic means are distributed to the end of the area of the display means and between the blank character strings to which the normal character string is distributed Display control means for displaying,
  The number of characters that can be displayed in the predetermined area of the display means is variable according to the number of characters in the character information signal.This is the gist.
[0022]
The gist of the invention described in claim 2 is that when a fraction occurs in the number of characters averaged by the computing means, it is added to either one of the end portions of the region.
[0023]
The gist of the invention described in claim 3 is that the transmission signal is a DAB broadcast wave.
[0024]
The invention according to claim 4 is characterized in that the character information signal is an ensemble label.
[0025]
The invention according to claim 5 is characterized in that the character information signal is a service label.
[0026]
The invention according to claim 6 is characterized in that the character information signal is a service component label.
[0027]
DETAILED DESCRIPTION OF THE INVENTION
Next, an embodiment of a broadcast receiving apparatus of the present invention is applied to a broadcast receiving apparatus for DAB broadcasting (Digital Audio Broadcasting) and will be described with reference to the drawings.
[0028]
The DAB broadcasting services currently being implemented in Europe include audio services such as voice and data services such as text, graphics, and software. Each service content is transmitted as a transmission signal. Some of the transmission signals have a character information signal including a normal character string and a blank character string.
[0029]
In the present invention, it is assumed that a character information signal is included in the transmission signal or only the character information signal is transmitted as the transmission signal.
[0030]
1A, an in-vehicle broadcast receiving apparatus 20 according to the present invention includes a receiving antenna 21, a high frequency amplifier circuit (RF amplifier) 22, a mixing circuit (MIX circuit) 23, a local oscillator (OSC) 24, and a PLL circuit. 25, an intermediate frequency amplifier circuit (IF amplifier) 26, a DAB signal decoder 27, an MPEG audio decoder 28, an audio signal amplifier circuit 29, and a speaker 30, and are controlled by the control circuit 31. In addition, an operation key 32 for outputting an operation signal to the control circuit 31, a monitor 33 for outputting a video in combination with a speaker 30 as an audio output, and a memory 34 are provided.
[0031]
As shown in FIG. 1B, the DAB signal decoder 27 includes an AD converter 35, a digital mixing circuit (D-MIX circuit) 36, an input buffer 37, a fast Fourier transformer (FFT) 38, and an operation modulator (DD). ) 39, a frequency / time deinterleave circuit (F & T) 40, an error correction circuit (DECODER) 41, an output buffer 42, a frequency synchronization control circuit (AFC) 43, and a time synchronization control circuit (CIR) 44.
[0032]
In this embodiment, the components from the receiving antenna 21 to the audio signal amplifying circuit 29 are receiving units, the speaker 30 and the monitor 33 are output units, the DAB signal decoder 27 and the control circuit 31 are service scans. Means and operation keys 32 include scan selection means.
[0033]
A radio wave of a certain frequency received by the antenna 21 is output to the mixing circuit 23 in a state where it is amplified to a predetermined level by the high frequency amplifier circuit 22.
[0034]
The mixing circuit 23 converts a desired DAB signal frequency into an IF signal based on the reception frequency amplified by the high frequency amplification circuit 22 and the frequency output from the local oscillator 24 and outputs the IF signal to the intermediate frequency amplification circuit 26. In order to obtain a desired DAB signal frequency, the frequency output from the local oscillator 24 to the mixing circuit 23 is changed by setting a frequency division ratio in the PLL circuit 25 by the control circuit 31.
[0035]
The intermediate frequency amplifying circuit 26 amplifies the IF signal by AGC or the like to remove the unnecessary signal component and outputs the signal to the DAB signal decoder 27.
[0036]
The DAB signal decoder 27 outputs broadcast receiver control information to the control circuit 31, receives service setting data output from the control circuit based on the broadcast receiver control information, and receives a reception frequency based on the service setting data. Are output to the MPEG audio decoder 28 while scanning the audio data corresponding to a plurality of services included in the.
[0037]
The MPEG audio decoder 28 outputs a signal based on the audio data corresponding to the service output from the DAB signal decoder 27 among a plurality of services included in one frequency to the audio signal amplifying circuit 29 and passes through the speaker 30 to the user. Provides DAB audio services.
[0038]
Further, service configuration information necessary for selecting a DAB audio service desired by the user is stored in the memory 34 after being fetched from the DAB signal decoder 27 to the control circuit 31. The user can instruct a series of processing using the operation keys 32, and can check the operation status of the broadcast receiving apparatus on the monitor 33.
[0039]
Here, a configuration example of a DAB service will be described with reference to FIG. Here, it is assumed that one audio is assigned to one service.
[0040]
As described above, the ensemble includes n services as shown in FIG. 2A, and each service has a minimum service configuration unit called a service component including one audio data. Assigned.
[0041]
In order to distinguish these service components individually, a Service Component ID with the service is superimposed on a DAB signal to be transmitted.
[0042]
FIG. 2B shows an example of a DAB service configuration database created in the broadcast receiving apparatus from the transmitted DAB signal. The service configuration information is stored in the memory 34 from the DAB signal decoder 27 via the control circuit 31.
[0043]
The parameters of start address, size, and protection necessary for decoding a service component (abbreviated as “service C” in the drawing) will be described below.
[0044]
The start address is information indicating where the service component is in the transmitted data (where the data should be extracted).
[0045]
The size is information indicating how much data should be extracted from the start address according to the audio hit rate or protection described later.
[0046]
Protection indicates the strength of error correction capability, and there are protection 1 to protection 5. The stronger the correction is performed, the larger the data becomes than the original audio data.
[0047]
On the other hand, parameters such as ensemble label, service label, service component label, and program type correspond to the service ID. These can be displayed as character information on the display 33a of the monitor 33 of the broadcast receiving apparatus. The program type is information indicating the genre of the program.
[0048]
Next, an example of display control on the display 33a of the monitor 33 by the control circuit 31 will be described based on the flowchart of FIG.
[0049]
(Step 1)
In step 1, when the transmission signal is received, the index M of the label sequence of the character information signal superimposed on the transmission signal_iThe address i of (i = 0, 1, 2,... 15) is set as the leading address 0, and the process proceeds to step 2.
[0050]
(Step 2)
In step 2, the index M₀Is a blank character code (code number = 20H), and the index M₀If is a space character code, the process proceeds to step 3 and the index M₀If is not a blank character code, that is, if a blank character code is not inserted at the beginning of the label string and it is some character code, the process proceeds to step 5.
[0051]
(Step 3)
In step 3, the index M₀Is the blank character code, the current address 0 for blank character code detection is moved up to the next address 1 and the process proceeds to step 4.
[0052]
(Step 4)
In step 4, the address moved up is the 16th address, that is, the address 15 (index M₁₅) Is detected. In this case, since the address is 1, the process loops to step 2.
[0053]
In step 2 at this time, the presence of a space character code is detected in the same manner as in step 2 above.₁Is the target of white space character code detection.
[0054]
Furthermore, this index M₁If is a space character code, the process proceeds to step 3 again, and the index M₁If is not a space character code, the process proceeds to step 5.
[0055]
Thus, the index M is hereinafter referred to._iIs sequentially incremented from the top, and if the incremented address is a blank character code, another character code is detected or the 16th index M is detected in step 4₁₅Steps 2 to 4 are repeated until
[0056]
And index M_iWhile the above steps are repeated halfway until the blank character code is counted, when another character code is detected, the process proceeds to step 5, and in step 4, the 16th index M₁₅If all the blank character codes are detected, the process is terminated assuming that all of the label strings are blank character codes.
[0057]
(Step 5)
In step 5, if the process has shifted to the blank character code detection in the first step 2, the number of blank characters a on the head side is the same as address 0, assuming that no blank character code is included in the head of the label string. When the number “0” is stored in the memory 34 as the number of blank characters a and the process proceeds to step 5 after passing through steps 3 and 4 once or more, the number of times, that is, immediately before detecting another character code. Is stored in the memory 34 as the number of blank characters a on the head side, and the process proceeds to step 6.
[0058]
(Steps 6 and 7)
In step 6, this time the label column index M_iThe address i of (i = 0, 1, 2... 15) is set as the last address 15 and the process proceeds to step 7, where the number of blank characters b for the previous count stored in the memory 34 is set to 0 count. Reset to step 8.
[0059]
(Step 8)
In step 8, the index M of the label column_i(= M₁₅) Is a space character code (code number = 20H), and the index M₁₅If is a space character code, the process proceeds to step 9 and the index M₁₅If is not a blank character code, that is, if the blank character code is not inserted at the end of the label string and is any character code, the process proceeds to step 20.
[0060]
(Step 9)
In step 9, the index M₁₅Is a blank character code, the current blank character code detection address 15 is moved down to the address 14 and the routine proceeds to step 10.
[0061]
(Step 10)
In step 10, the index M₁₅Is a blank character code, count 1 is added to the number of blank characters b counted as 0 in step 7, and at the same time, count 1 of the number of blank characters b is stored in the memory 34 and looped to step 8. That is, the index M₀In the case of counting the space character code from the index M_iThe address at the time of detecting a character code other than the blank character code may be stored in the memory 34 as the number of blank characters a. Index M at that time even if is 0_iSince the address of 15 is 15, in the case of the end side, the number of blank characters b is added for each count and stored in the memory 34.
[0062]
Thus, the index M is hereinafter referred to._iThe address “i” is successively lowered, and if the lowered address is a blank character code, the count “b” updated in step 10 each time is stored in the memory 34.
[0063]
And index M_iWhile the above steps are repeated halfway until the blank character code is counted, the process proceeds to step 20 when another character code is detected.
[0064]
(Step 11)
In this step 11, the arithmetic expression
int {(a + b) / 2} (1)
Thus, the average value c of the number of blank characters a on the front side and the number of blank characters b on the end side of the normal character string is calculated, and the process proceeds to step 12.
[0065]
Note that “Int” is a symbol indicating that the fractional part is rounded down at the time of calculation. This is used to make the calculation result an integer when the number of blank characters (a + b) is an odd number.
[0066]
(Step 12)
In step 12, the buffer J of the display 33a₀~ J₁₅Display index H corresponding to_jThe address j of (j = 0, 1, 2,... 15) is set to the leading address 0, and the process proceeds to step 15.
[0067]
(Step 13)
In step 13, the display index H is applied to the average value C of the blank character strings averaged in step 11._j(= H₀) Is a blank character code, the average value C is the display index H_jIn other words, the display index H is equal to the number of average values C._jIf the space character encoding has not been completed, the process proceeds to step 14 where the display index H is the same as the average value C._jWhen the blank character encoding is completed, the process proceeds to step 15.
[0068]
(Step 14)
In step 14, the display buffer J₀~ J₁₅First buffer J₀The blank character codes of the average value C are allocated in order, and the process proceeds to step 18.
[0069]
(Step 15)
In step 15, the arithmetic expression
C + {16- (a + b)} (2)
By means of this, the blank character string A of the average value C and the character string of the normal character string N are displayed in the display buffer J.₀~ J₁₅It is confirmed whether or not it is inserted corresponding to the above. If it is not inserted, the process proceeds to step 16, and if it is inserted, the process proceeds to step 17.
[0070]
(Step 16)
In step 16, the character string of the normal character string N is inserted corresponding to each buffer, and the process proceeds to step 18.
[0071]
(Step 17)
In step 17, blank character codes are inserted in order from the buffer next to the end of the normal character string N, and the process proceeds to step 19.
[0072]
(Step 18)
In step 18, the code insertion in step 16 and step 17 is inserted by sequentially incrementing the buffer address, and the process proceeds to step 19.
[0073]
(Step 19)
In step 19, the address moved up is the 16th address, that is, the address 15 (index H₁₅) Is detected. If the address 15 has not been reached, the process loops to step 13.
[0074]
At this time, the index H₁₅Since the case of a normal character string and the case of a blank character string are conceivable, the processes in steps 15 to 18 are repeated.
[0075]
By the way, in the above routine, regardless of whether (a + b) is an even number or an odd number, it is averaged in step 11; However, it is also possible to determine whether (a + b) is an even number or an odd number before the processing in step 11 and change the routine according to the determination result.
[0076]
A routine having such an even / odd discrimination function will be described below with reference to FIG. Since the operations in steps 1 to 19 except for step 11 are substantially the same, only the different routines will be described below.
[0077]
(Step 20)
In step 20, based on the count number a on the leading side obtained in step 5 and the count number b counted in step 10, the calculation formula
(A + b) mod 2 (3)
The odd / even determination is performed using.
[0078]
Note that “mod” is a symbol for obtaining the presence / absence of “remainder” in (a + b) / 2 and outputting “0” when there is no remainder and “1” when there is a remainder, and the operation of (a + b) / 2 If the result is “0”, it is determined that the number of blank characters a + b is an even number, and the process proceeds to step 21. If the result is “1”, it is determined that the number of blank characters a + b is an odd number, and step 21. Migrate to
[0079]
(Step 21)
In this step 21, an arithmetic expression
(A + b) / 2 (4)
Thus, the average value c of the number of blank characters a on the front side and the number of blank characters b on the end side of the normal character string is calculated, and the process proceeds to step 12.
[0080]
That is, since the number of blank characters a + b is determined to be an even number using the arithmetic expression (3), in step 21, the counted number of blank characters a and the number of blank characters b are simply divided into two to obtain the average value C. . The obtained average value C is assigned to the number A of blank characters at the time of display, whereby the number B of blank characters is automatically determined. Further, the arithmetic expression (1) of step 11 can be used as it is instead of the arithmetic expression (4).
[0081]
(Step 22)
In step 22, an arithmetic expression
Int {(a + b) / 2} +1 (5)
Thus, the average value c of the number of blank characters a on the front side and the number of blank characters b on the end side of the normal character string is calculated, and the process proceeds to step 12.
[0082]
Note that “Int” is a symbol indicating that the decimal part is rounded down at the time of calculation. That is, since the number of blank characters a + b is determined to be an odd number using the arithmetic expression (3) in step 20, “1” is added to the average value C after the decimal point is rounded down by “Int”. By assigning the obtained average value C to the number A of blank characters at the time of display, the number B of blank characters is automatically determined.
[0083]
Therefore, the number of blank characters A is assigned one more than the number of blank characters B.
[0084]
When assigning an average value C that is one character less than the number of blank characters B to the number of blank characters A, Equation (5) is used.
Int {(a + b) / 2} (5 ')
“+1” should be abolished.
[0085]
On the other hand, FIG. 5A shows a data format model of a character string for display after receiving a character information signal as such a label. In FIG. 5A, a blank character string with A blank characters, a normal character string with N normal characters, and a blank character string with B blank characters are labels, and the total number of characters (A + N + B) is 16 characters.
[0086]
Further, the portion corresponding to the blank character string is, for example, when the number of normal characters is four, the average value C of the counted number of blank characters a + b is six. Therefore, as shown in FIG. Buffer J corresponding to the number of characters A (= average value C)₀~ J_FiveAnd a buffer J corresponding to the number of blank characters B (= average value C)_Ten~ J₁₅Are all filled with whitespace codes. Further, for example, when the number of normal characters in the normal character string is 5, the average value C of the counted number of blank characters a + b is 6, so that the number of blank characters A (( = 6 buffers J corresponding to average value C)₀~ J_FiveAnd five buffers J corresponding to the blank character string B (= average value C-1)₁₁~ J₁₅Are all filled with whitespace codes.
[0087]
By the way, in the above embodiment, the total number of transmitted characters and the total number of displayed characters are equal to each other with 16 characters. Therefore, it is possible to center the displayed characters by simply obtaining the average value of the number of blank characters. When the total number is different from the total number of display characters, for example, when the total number of transmission characters is 16 and the total number of display characters is 20, if the above embodiment is applied as it is, the display characters are not displayed in the center alignment. Become.
[0088]
Therefore, in order to solve this problem, as shown in FIG.₀~ J₁₉16 characters in the center of the other broadcast display area 34a having 20 characters, that is, two characters at each end buffer J₀, J₁, J₁₈, J₁₉Buffer J excluding₂~ J₁₇The display area on the display device 33a may be defined and varied in advance, for example, for receiving DAB broadcasts.
[0089]
In this way, in the DAB broadcast receiving apparatus having a display for 16 characters in width, the display position of the display character on the display 33a of the ensemble label, service label, and service component label is set to the center. Regardless of the transmitted character information signal, the display character can always be displayed in the center of the display area. Therefore, the display characters can be recognized instantly regardless of the number of display characters and without searching for the display position.
[0090]
In the embodiment described above, alphanumeric characters are described as examples of character strings, but characters, hiragana, katakana, kanji, characters, etc. used in countries such as Germany and France are also included in the character strings.
[0091]
Moreover, although the display in DAB broadcasting is described as an example, it is applicable to FM multiplex broadcasting, which is a wireless signal transmission method such as DAB broadcasting, and is not only wireless signal transmission but also wired including character information. It can also be applied to signal transmission.
[0092]
【The invention's effect】
As described above, in the broadcast receiving apparatus of the present invention, the first number of blank characters that are to be displayed near the edge of one area of the display means among the blank character strings included in the character information signal is detected. Blank character number detecting means, second blank character number detecting means for detecting the number of blank characters to be displayed near the other region end of the display means among the blank character strings included in the character information signal, and first and second A calculating means for adding and averaging the number of characters detected by the number of blank character detecting means, and a blank character string of the number of characters averaged by the calculating means are distributed to the end of the area of the display means and the normal character string is By providing a display control means for displaying between each distributed blank character string, regardless of the transmitted character information signal, display characters can always be displayed in the center of the display area, It is possible to improve the recognition of the shown characters.
[Brief description of the drawings]
FIG. 1 shows a broadcast receiving apparatus according to an embodiment of the present invention, in which (A) is a block diagram of a vehicle-mounted broadcast receiving apparatus, and (B) is a block diagram of a DAB signal decoder.
2A is an explanatory diagram of a configuration example of a reception frequency, and FIG. 2B is a chart of a list of codes and labels included in the ensemble.
FIG. 3 is also a flowchart of a work routine of the broadcast receiving apparatus.
FIG. 4 is a flowchart of another work routine of the broadcast receiving apparatus.
Similarly, (A) is an explanatory diagram of a data format model of a display character string after receiving a character information signal, (B) is a front view of a display device with an even number of characters, and (C) is an odd number of characters. It is a front view of the indicator in the case.
FIG. 6 is a front view of another display device for displaying in different character areas.
7A and 7B show a conventional broadcast receiving apparatus, in which FIG. 7A is a front view of a display device, FIG. 7B is a front view of a display device in a left-aligned display state of display characters, and FIG. (D) is a front view of the display in a state where the display characters are displayed to the right, and (E) is a front view of the display in a state where the display characters are right-aligned.
FIG. 8 is also an explanatory diagram of a data format model of a character information signal reception / display character string.
[Explanation of symbols]
20 ... broadcast receiving apparatus
31... Control circuit (first blank character number detection means, second blank character number detection means, calculation means, display control means)
33 ... Monitor
33a ... Display (display means)

Claims (6)

A receiving means for receiving a transmission signal having a character information signal including a normal character string and a blank character string, and a predetermined area by converting the character information signal received by the receiving means into a character based on each character string In a broadcast receiving device comprising display means for displaying within,
First blank character number detecting means for detecting the number of blank characters to be displayed near one end of one area of the display means among the blank character strings included in the character information signal, and the character information signal including the character information signal. Of the blank character string, the number of characters detected by the second blank character number detecting means for detecting the number of blank characters to be displayed near the other region end of the display means, and the number of characters detected by the first and second blank character number detecting means. An arithmetic means for adding and averaging, and a blank character string of the number of characters averaged by the arithmetic means are distributed to the end of the area of the display means and between the blank character strings to which the normal character string is distributed Display control means for displaying ,
The broadcast receiving apparatus characterized in that the number of characters that can be displayed in the predetermined area of the display means is variable according to the number of characters of the character information signal . The broadcast receiving apparatus according to claim 1, wherein when a fraction occurs in the number of characters averaged by the computing unit, the fraction is added to one of the end portions of the area. The broadcast receiving apparatus according to claim 1, wherein the transmission signal is a DAB broadcast wave. 4. The broadcast receiving apparatus according to claim 1, wherein the character information signal is an ensemble label. 4. The broadcast receiving apparatus according to claim 1, wherein the character information signal is a service label. 4. The broadcast receiving apparatus according to claim 1, wherein the character information signal is a service component label.

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