JPH05111000A - Broadcast receiver - Google Patents

Abstract

PURPOSE:To improve the operability of channel selection and to improve the portability by designating an item indicating contents of a repeatedly broadcast ed programs having specific contents like teletext to automatically select the channel of the program corresponding to the designated item. CONSTITUTION:When an item is selected (step S3), selected program pairs registered corresponding to this item are received in a prescribed order (steps S4, S5), and the reception state of received programs is checked (steps S6, S7). If the reception state is bad, it is checked whether all of selected program pairs corresponding to the item are selected with a prescribed frequency or not (steps S8, S9), and the next selected program pair is received if they are not selected with the prescribed frequency (steps S10, S11). When a program whose reception state is good is found, it is decoded and is displayed out (steps S14, S15). If any programs whose reception state is good are not found regardless of the prescribed frequency in selection, an error message is outputted and a power source is turned off (steps S17, S18).

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a broadcast receiving device, and more particularly to a broadcast receiving device capable of easily and quickly selecting a program relating to information to be known.

[0002]

2. Description of the Related Art Broadcast receivers, such as television receivers, radio receivers, and teletext receivers, have hitherto been viewed and viewed in order to select a program to be received. The person selects the channel of the broadcast receiving apparatus and sets the program. In this way, it is troublesome for the viewer to operate the channel of the broadcast receiving apparatus and select the program each time. Therefore, conventionally, various channel selection methods have been devised in order to facilitate program channel selection. For example, by setting a specific channel to one or more preset keys in advance and storing it in the memory, and by inserting the preset key corresponding to the channel corresponding to the program to be received, the preset channel can be quickly changed. There is a way to choose.
Further, there is a method in which one channel selection key is provided and the channel can be switched each time the channel selection key is pressed, and the target program is selected by repeating the input of one channel selection key in sequence.

[0003]

However, in such a conventional broadcast receiving apparatus, the program selection is still troublesome and there is room for improvement. That is, in such a conventional broadcast receiving apparatus, when only one preset key is provided, when the reception state of the program of the channel selected by the preset key is poor, the tuning by the preset key is performed. Can't
It was necessary to manually select another channel or program again by using a tuning knob or the like. Also, when multiple preset keys are provided, when the reception status of the program selected by one of the preset keys is poor,
It is necessary to insert another preset key to select another program, but a portable broadcast receiving device cannot be provided with too many preset keys in order to ensure portability. After all, it was necessary to manually select another channel or program by using a tuning knob or the like. As described above, in the conventional broadcast receiving device, in any case,
It is necessary to manually redo the channel selection, which is not only troublesome in the channel selection operation, but also there is a problem that desired information cannot be promptly obtained. Therefore, the present invention broadcasts the intended information by selecting a program in a good reception state from the programs broadcasting the intended information and automatically selecting it. In addition to making it possible to automatically select a program in good condition and obtain the desired information quickly,
It is intended to improve the operability of selecting a broadcast receiving device.

[0004]

The invention according to claim 1 is
Receiving means capable of receiving the same type of program content from a plurality of channels and receiving each of these broadcast radio waves, and tuning means for extracting broadcast signals by synchronizing with the predetermined radio waves from the broadcast radio waves received by the receiving means. A reception state detection means for detecting a reception state of the broadcast signal selected by the channel selection means, an output means capable of outputting broadcast content corresponding to the broadcast signal selected by the channel selection means, and a storage means, External operation means for storing a plurality of sets of receiving channels and broadcast programs as a selected program pair for each item defining the type of program in the storage means, and selection of the selected program pair stored in the storage means. In the case where a station is designated by the channel selection instruction means for starting the station by designating an item, and an item is designated by the channel selection instruction means, and the start of the channel selection of the channel selection program pair corresponding to this item is instructed,
If it is determined that the reception state of the selected channel selection program is bad according to the detection result of the reception state detection unit, it causes the channel selection unit to select another channel selection program stored for the item. A channel selection control means for selecting a channel selection program pair having a good reception state as a channel selection program from the detection result of the reception state detection means. Further, for example, as described in claim 2, the receiving means receives a broadcast radio wave of a teletext, and the tuning means extracts a teletext signal from the teletext radio received by the receiving means. The reception state detection means detects the reception state of the character broadcast signal, and the signal processing means decodes character data from the character broadcast signal selected by the channel selection means and performs signal processing into a state in which the character data can be output.

[0005]

According to the present invention, the receiving means receives the broadcast radio waves for broadcasting the same type of program content on a plurality of channels such as teletext, and the tuning means determines the predetermined radio waves from the broadcast radio waves received by the receiving means. Synchronize with the radio wave of to extract the broadcast signal.
The signal processing unit processes the broadcast signal extracted by the channel selection unit into a state in which the signal can be output, and outputs the output signal based on the processed signal. Further, the reception state of the broadcast signal selected by the channel selection means is detected by the reception state detection means. On the other hand, according to the operation of the external operation means, a plurality of selected program pairs are stored in the storage means as a selected program pair of the reception channel and the broadcast program of the channel for each item defining the type of the program, and the selection instruction is made. When the means designates the start of tuning of the selected program pair by designating an item, the tuning control means responds to the designated item of the plurality of selected program pairs registered in the storage means. A plurality of selected program pairs stored as described above are selected in a predetermined order. At this time, if the tuning control means determines that the reception status of the selected channel selection program pair is bad according to the detection result of the reception status detection means, other tunings stored in the storage means for the item. The channel selection means is caused to perform channel selection of program pairs in a predetermined order, and a channel selection program pair having a good reception state is selected as a channel selection program from the detection result of the reception state detection means. Therefore, by simply designating an item by the channel selection instructing means and instructing the start of the channel selection, it is possible to tune in the selected program pair stored in advance in the storage means for each item, and to select the selected channel. When the reception status of the program pair is poor and cannot be received normally, the programs stored in the storage means corresponding to the item are sequentially received in a predetermined order, and the program with a good reception status is automatically selected. Can be made.

[0006]

EXAMPLES The present invention will be specifically described below based on examples. 1 to 4 are diagrams showing an embodiment of a broadcast receiving apparatus according to the present invention. FIG. 1 is a block diagram of a broadcast receiving apparatus 1 according to an embodiment of the present invention.
Antenna 2, tuner 3, VIF 4, microprocessor 5, error detector 6, text VRAM 7, CG
8, a display controller 9, a display unit 10, a CPU 11, a memory 12, a keyboard 13, an original signal generator 14, a frequency dividing circuit 15, a power supply device 16 and the like. The broadcast receiving apparatus 1 is capable of receiving a broadcast radio wave for repeatedly broadcasting a character broadcast or a program of a specific item.

The power supply device 16 converts an external power supply or a power supply from a battery (not shown) into a predetermined voltage and supplies it to each part of the broadcast receiving device 1. This power supply 16 has a CP
The control signal from U11 is input, and the power supply device 16 starts and stops the power supply by this control signal.

The broadcast receiving apparatus 1 receives broadcast radio waves by its antenna (reception means) 2, and the broadcast radio waves received by the antenna 2 are sent to the tuner 3. The tuner (tuning means) 3 is a so-called electronic tuner composed of a coil, a capacitor, a resistor, etc., and operates under the control of the CPU 13. The tuner 3 tunes to a radio wave of a frequency designated by the CPU 13, extracts a signal of that frequency, and outputs V
Output to IF4. The VIF 4 is composed of a demodulation circuit, a detection circuit, etc., demodulates and detects a signal input from the tuner 3, and extracts a video signal portion from the signal.

The microprocessor 5 is equipped with an A / D converter, a buffer, a decoder and the like, and has a VIF4.
The analog video signal input from the A / D converter is converted into a digital signal and stored in a buffer.
Further, the microprocessor 5 decodes the input signal by the decoder and converts it into character data.

The digital signals stored in the buffer of the microprocessor 5 are sequentially taken out and output to the error detector 6, and the error detector (reception state detecting means) 6
Detects the number of errors in it and outputs the detected number of errors to the microprocessor 5 and the CPU 11.

Under the control of the CPU 11, the text VRAM 7 stores the character position, size and character code on the display screen.

The CG 8 stores a display dot pattern corresponding to a size and a code. When the size and the code are input from the text VRAM 7, the CG 8 outputs the display dot pattern to the display controller 9.

The display controller 9 is composed of an input sequence counter and a display position control circuit, and displays a position signal and a display signal so that the dot pattern sequence input from the CG 8 is sequentially displayed from the upper left to the lower right of the display screen. It is generated and output to the display unit 10. Therefore, the VIF 4, the microprocessor 5, the text VRAM 7, the CG 8 and the display controller 9 function as signal processing means for processing the selected broadcast signal in a state in which it can be output.

The display unit (output means) 10 is a Y-CTR2.
1, an X-CTR 22 and an LCD (liquid crystal display device) 23. The LCD 23 includes a Y-CTR 21 and an X-CT.
It is driven by the drive signal from R22. Y-CTR2
The 1 and the X-CTR 22 output to the LCD 23 a drive signal for controlling designated ON / OFF for each coordinate of the LCD 23 based on the position signal and the display signal input from the display controller 9. The LCD 23 has display pixels arranged in a dot matrix, and the Y-CTR2
It is turned on (for example, black display) or turned off (transparent display) by the drive signal from the 1 and X-CTR 22.

The CPU (tuning control means) 11 is composed of a microprocessor, ROM, RAM, etc.
A program as the broadcast receiving apparatus 1, a channel number that can be selected, a frequency corresponding to the channel number, and the like are stored therein. The RAM is used as a work memory, and the CPU 11 of the microprocessor controls each unit of the broadcast receiving apparatus 1 according to the program in the ROM to function as the broadcast receiving apparatus 1.

Keyboard (registration means and tuning instruction means)
2, an item selection key 31, a program selection key 32, a channel selection key 33, a power on / off key (ON / OFF) 34, and a feed scroll key 3 are shown in FIG.
5, a return scroll key 36, a registration key 37, etc. are provided to perform various operations of the broadcast receiving apparatus 1. It is possible to select a program item to be registered or selected in advance by using the item key 31 (for example, an item indicating the type of the program such as weather, traffic information, stock price information, news, and cooking).
A channel of the broadcasting station can be selected by the channel key 33. Further, the program of each channel can be selected by the program selection key 32, and the on / off key 3
The power of the broadcast receiving apparatus 1 can be turned on / off by means of 4. The scroll keys 35 and 36 are a plurality of items stored in advance in the ROM of the CPU 11 and a memory 1 to be described later when each item key 31 is pressed.
The plurality of items registered in 2 can be scrolled in the forward order or the reverse order, and when the program key 32 is pressed, the programs that can be selected can be scrolled. Further, when the channel key 33 is turned on, the channel that can be selected is scrolled by the scroll key 3
It can be selected by 5, 36. Registration key 37
Is used when registering a channel or program in the memory 12 as a selected program pair for each item, as described later.

The memory (program pair storage means) 12 is a RAM
Etc., and stores data for automatic channel selection (data for channel selection programs). That is, as shown in FIG. 3, the memory 12 is roughly divided into areas for each item, and the area of each item stores a channel number and a program in association with each other. The items, channels, and programs can be registered in the memory 12 by operating the keyboard 13. That is, when the item key 31 is pressed, only one item is read from the ROM and the LCD 23
Displayed in. When the displayed item is not the desired item, the scroll keys 35 and 36 are operated to switch the sequentially displayed items, and when the desired item is displayed,
The registration key 37 is turned on to select the item. CPU1
When item 1 is selected, the item 1 stores the selected item in a predetermined item storage area of the memory 12. A plurality of items can be registered in the memory 12 by sequentially performing the above processing for the items to be registered. When registering a channel and a program corresponding to each item, similarly, the channel key 33 or the program key 32 is turned on, and the scroll channel 35 or 36 is used to display the desired channel number or program on the LCD 23. When the corresponding channel number or program is displayed, the registration key 37 is pressed to select the channel number or program. When an item is selected for the selected channel number or program, CP
U11 stores the set of the channel number and the program selected in the memory 12 in association with the item as a selected program pair. Note that the registration of the channel number and the program is not limited to the above method. For example, an item may be set first and the channel number and the program may be sequentially registered for each item.

The original signal generator 14 is a so-called crystal oscillator composed of a crystal, a resistor, a capacitor, etc., and generates an original clock signal of a constant frequency. The frequency dividing circuit 15 is formed, for example, by combining several stages of binary counters, divides the original clock signal input from the original signal generator 14, and uses a 1 Hz clock that can be used as a reference signal for a clock. A signal is generated and output to the CPU 11. The CPU 11 uses the clock signal from the frequency dividing circuit 15 to measure the current time, display the current time on the LCD 23, control the power supply of the broadcast receiving apparatus 1 to ON / OFF, and use it for various controls. There is.

Next, the operation will be described. Broadcast receiver 1
Can display the time, and displays the time on the LCD 23 when the broadcast is not received. That is, when the on / off key 34 of the keyboard 13 is turned off, the broadcast receiving device 1 uses the CPU
11, the clock signal input from the frequency dividing circuit 15 is used to measure the current time, the display position is determined, and the text V
Information on the current time is output to the corresponding position in the RAM 7.
Information of the current time is output from the text VRAM 7 to the display controller 9 via the CG 8, and the current time is displayed at a predetermined position on the LCD 23.

In this state, when the on / off key 34 of the keyboard 13 is turned on, the CPU 11 turns on the power and starts the receiving process. That is, the CPU 11
When the on / off key 34 is turned on, the power supply 1
Control signal for instructing 6 to turn on (for example, “H” signal)
And the power supply device 16 supplies power to the tuner 3, the VIF 4, the microprocessor 5, and the error detector 6 when the control signal instructing to be turned on is input. Further, the CPU 11 outputs a reset signal to the microprocessor 5 to cause the microprocessor 5 to perform an initialization process. When the initialization processing is completed, normal reception processing is performed. That is, the antenna 2 receives the broadcast radio wave, and the tuner 3 extracts a signal of a frequency corresponding to a predetermined channel (for example, an initially set channel) from the broadcast radio wave received by the antenna 2. The signal extracted by the tuner 3 is output to the VIF 4, and the VIF 4 performs demodulation / detection processing and then C
The video signal corresponding to the designated program is selected from the PU 11 and output to the microprocessor 5. The microprocessor 5 converts the video signal into a digital signal by an A / D converter, stores it in a buffer for each scanning line, and outputs it to the error detector 6 to cause the error detector 6 to detect the error signal. .. The error detector 6 outputs the detected number of errors to the microprocessor 5 and the CPU 11, and when the number of errors is within the error recoverable range, the microprocessor 5 decodes it with a built-in decoder and outputs it to the text VRAM 7. To do. Text VRAM
7 sequentially outputs the character code and the size to the CG 8 from the upper left to the lower right of the display screen, and the CG 8 is the text VRAM 7
The pattern corresponding to the data sent from the display controller 9 is output to the display controller 9. The display controller 9 determines the display position and the display content, and the Y-CTR 21 and the X-CT.
Control R22. Y-CTR21 and X-CTR22
Outputs a drive signal to the LCD 23 to display the content corresponding to the corresponding position on the LCD 23.

As described above, when the on / off key 34 is pressed, the broadcast receiving apparatus 1 displays the contents of the preset channel on the LCD 23, but the viewer aims at the displayed contents. When it is not content,
By operating the keyboard 13, the display content can be changed.

A normal display content changing operation is performed by operating the program key 32 or the channel key 33 of the keyboard 13. In other words, to change the program,
By turning on the program key 32 and operating the scroll keys 35 and 36, the programs can be changed in sequence. When changing the channel, after turning on the channel key 33, the scroll keys 35 and 36 are operated. This allows you to change channels. At this time, C
The PU 11 sets the selected channel number to the tuner 3
To output the radio wave of the corresponding channel and output the program to the microprocessor 5 to cause the microprocessor 5 to select a video signal corresponding to the program for decoding and display processing. The viewer has completed the selection when the program of the desired channel is displayed.

However, when a program of a specific item is repeatedly broadcast on a plurality of channels with different programs, such as a character broadcast, this channel selection method is used until the program of the desired item is selected. Not only is there a lot of operations to perform, but when the reception status of the selected program is poor, you need to perform the same operation again to select the channel that is broadcasting the same item and that program. Yes, the tuning operation is troublesome.

Therefore, in the present broadcast receiving apparatus 1, when the item key 31 and the scroll keys 35 and 36 are operated to specify the target item, the channel and program registered in advance in the memory 12 in association with the item are predetermined. Channels are selected according to the order, and when the reception is poor, the next channel and program are automatically selected.

That is, as shown in FIG. 4, the CPU 11
When the on / off key 34 of the keyboard 13 is turned on (step S1), the normal reception process is performed, and it is checked whether or not an item is selected by the item selection key 31 and the scroll keys 35 and 36 (step S2). ..
When an item is not selected, the normal reception process is continued, and when the item is selected, the data of the selected program pair registered for the selected item is registered in a predetermined order, for example, registered. The data is read from the memory 12 in the same order (step S4). The program is received based on the read data of the selected program pair (step S
5) The error is detected by the error detection 6 (step S6).

Next, the CPU 11 determines whether or not the reception state of the received program is good, based on the error number information input from the error detector 6 (step S).
7). If it is determined that the reception condition is not good, it is checked whether all the selected program pairs registered in the designated item have been received (tuned) (step S8), and all the selected program pairs are selected. If not, step S
Move to 10. When all the selected program pairs in the designated item have been selected, it is checked whether or not all the selected program pairs in the item have been selected a predetermined number of times (for example, 3 times) (step S9). .. When the selected program pairs have not been selected a predetermined number of times, the data of the selected program pair next to the designated item is read from the memory 12 (step S10), and based on the read data of the selected program pair. , The program is received (step S11).

When the reception of the next selected program pair is started, it is checked whether the power is turned off (step S1).
2) When turned off, the process ends. If it is not turned off, it is checked whether or not the item selecting operation is performed (step S13). If the item selecting operation is not performed, the process returns to step S6 and the error detection of the received program is similarly performed.

The above-described processing is repeatedly executed until a program having a good reception state is received or the channel selection processing is performed a predetermined number of times for all channel selection program pairs of the designated item. If the reception state is good in step S7, the character decoding process is performed (step S14), and the decoded character data is displayed and output on the LCD 23 via the text VRAM 7, CG 8 and display controller 9 (step S1).
5). After that, after performing the reception process of the next page (step S16), whether the power is turned off (step S12),
Check if item selection is done (step S1
3) If the power is not turned off and the item is not selected, the process returns to step S6 to detect the error on the next page. That is, even if the reception status is once judged to be good and the automatic tuning operation is interrupted, the reception status is constantly checked, and if the reception status deteriorates during reception, the automatic tuning operation is restarted. can do.

If, in step S9, all the selected programs of the designated item are tuned a predetermined number of times during the automatic channel selection, there is no program with a good reception condition in the designated item. LCD error message
The output is displayed on 23 (step S17), and after a lapse of a predetermined time, the power is turned off and the process is terminated (step S1).
8). As the message, for example, "The program corresponding to the specified item cannot be selected because the reception condition is bad."
Etc. In this case, without turning off the power immediately,
A message prompting the designation of another item may be displayed, and the power may be turned off when no other item is designated even after a lapse of a predetermined time.

In this way, if the selected program pair is registered in advance for each item, the viewer can simply specify the item he / she wants to watch, and among the programs registered corresponding to the item, the program in a good reception state. Can be selected automatically. Therefore, it is possible to quickly and easily select a program of a desired item without repeatedly performing a troublesome tuning operation. As a result, it is possible to improve the operability and convenience in selecting a channel without providing many preset keys in the broadcast receiving apparatus 1, and it is possible to quickly obtain necessary information. The portability and usability of can be improved.

[0031]

According to the present invention, when the same contents are broadcast on a plurality of channels for each item such as a character broadcast, it is necessary to specify the item and instruct the start of channel selection in advance for each item. The registered program pair can be selected, and if the selected program pair cannot be received normally due to poor reception, the selected program pairs are automatically selected in the specified order. It is possible to make a pair of selected programs according to the intended item without performing a troublesome tuning operation.
You can easily tune in. As a result, it is possible to improve the operability and convenience in selecting the broadcast receiving device, and to obtain necessary information promptly, thereby improving the portability and usability of the broadcast receiving device. it can.

[Brief description of drawings]

FIG. 1 is a block configuration diagram of a broadcast receiving apparatus according to the present invention.

FIG. 2 is a front view of a keyboard of the broadcast receiving device of FIG.

FIG. 3 is a diagram showing a storage state of a selected program pair in a memory 12 of FIG.

FIG. 4 is a flowchart showing an automatic channel selection process.

[Explanation of symbols]

 1 Broadcast Receiver 2 Antenna 3 Tuner 5 Microprocessor 6 Error Detector 10 Display 11 CPU 12 Memory 13 Keyboard 14 Original Signal Generator 15 Frequency Divider 16 Power Supply

Claims (2)

[Claims] 1. A plurality of channels broadcast the same type of program content, receiving means capable of receiving the respective broadcast radio waves, and a broadcast signal synchronized with a predetermined radio wave from the broadcast radio waves received by the receiving means. Channel selection means for taking out, reception state detection means for detecting the reception state of the broadcast signal selected by the channel selection means, and output means capable of outputting broadcast content corresponding to the broadcast signal selected by the channel selection means A storage unit, an external operation unit for storing a plurality of reception channels and broadcast programs as a selected program pair in the storage unit for each item that defines a program type, and the selection unit stored in the storage unit. A tuning instruction means for starting the tuning of a station program pair by designating an item, and an item designated by the tuning instruction means for instructing the start of tuning of a selected program pair corresponding to this item. In case If it is determined that the reception state of the selected channel selection program is bad according to the detection result of the reception state detection unit, it causes the channel selection unit to select another channel selection program stored for the item. A broadcast receiving device comprising: a channel selection control unit that selects a channel selection program pair having a good reception state as a channel selection program from the detection result of the reception state detection unit. 2. The receiving means is capable of receiving a broadcast radio wave of a teletext, the tuning means extracts a teletext signal from the teletext radio received by the receiving means, and the reception state detecting means comprises: Detecting the reception state of the teletext signal,
2. The broadcast receiving apparatus according to claim 1, wherein the signal processing unit decodes character data from the character broadcasting signal selected by the channel selecting unit and performs signal processing so that the character data can be output.