JP3127521B2 - Broadcast receiver - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a broadcast receiving apparatus, and more particularly, to performing a receiving process only when a reserved page of a previously reserved program is broadcast when a program is broadcast in page units. The present invention relates to a broadcast receiving device that saves power consumption.

[0002]

2. Description of the Related Art As a broadcast receiving apparatus, there is a broadcast receiving apparatus capable of receiving a broadcast wave of a program in which cooking information, traffic information and the like are broadcast in page units, for example, a text broadcast receiving apparatus.
Conventionally, in a broadcast receiving apparatus that receives such a page-by-page broadcast, when a power is turned on and a channel or program selection is designated, a broadcast wave receiving process of the designated program is performed, and page broadcast is sequentially performed. The signal processing of the broadcast program transmitted in units is performed and the display output or / and the loudspeaker output is performed. The viewer obtains necessary information by watching or listening to the broadcast contents that are broadcast and output in page units.

[0003]

However, in such a conventional broadcast receiving apparatus, the power is turned on,
When a program is tuned, a broadcast wave of the tuned program is received, and a signal of a broadcast program sequentially transmitted in page units is processed. However, there is also a problem that power is unnecessarily consumed by performing reception and signal processing. That is, in a program broadcast on a page basis, for example, traffic information required by a viewer, such as traffic information, is only traffic information on an area broadcasted on a predetermined page of the broadcast program, and No local traffic information is needed. However, in the conventional broadcast receiving apparatus, when the power is turned on and a program is selected, it is not known when a required page is broadcast. Since the signal was processed and output, power was unnecessarily consumed. Therefore, the present invention
An object of the present invention is to reduce the power consumption by determining the broadcast time of a reserved page of a broadcast program reserved in advance and performing reception and signal processing only for the broadcast time of the reserved page of the program.

[0004]

According to the first aspect of the present invention,
Receiving means for receiving a broadcast radio wave in which a broadcast program is broadcast in page units; output means for outputting a text broadcast program corresponding to the broadcast radio wave received by the receiving means; and a text broadcast program received by the reception means. A reserved page number storing means for storing the reserved page number of the reserved page number, and a receiving page having the reserved page number stored in the reserved page number storing means is received at least twice by the receiving means, and a broadcast cycle of the reserved page is set. Determine
By this, the broadcast start time or broadcast end time of the reserved page
A broadcast time judging means for judging, and power supply means, based on the discrimination result of the broadcast time determination means, the only the reservation page number times book pages having the reservation page number stored in the storage means is broadcast Control means for automatically supplying power to each section of the broadcast receiving apparatus from the power supply means, and receiving and outputting the reserved page by the receiving means and the output means, and controlling the respective sections. When receiving a reserved page having a reserved page number stored in the reserved page number storage means by the receiving means, for example, as described in claim 2, a text broadcast program of the reserved page is received. A broadcast content storage means for storing may be further provided. Further, for example, as set forth in claim 3, the receiving means may receive teletext radio waves broadcast in page units.

[0005]

According to the present invention, for example, as in the case of teletext, a broadcast wave emitted from a broadcast program in page units is received by a receiving means, and a text broadcast program corresponding to the broadcast wave is output by an output means. The reserved page number in the teletext program received by the receiving means is stored in the reserved page number storing means. When the reserved page number is stored in the reserved page number storing means, the stored reserved page number is stored. Have at least two reserved pages
By receiving and judging the broadcast cycle of the reserved page,
The broadcast start time or the broadcast end of the reserved page
Determine the end time . Based on the result of the determination by the broadcast time determining means, the control means supplies power from the power supply means to each part of the broadcast receiving apparatus only during the time when the reserved page having the reserved page number stored in the reserved page number storage means is broadcast. Is supplied, and each process of reception and output is performed. At this time, the received text broadcast program of the reserved page may be stored in the broadcast content storage means. Therefore, the power can be automatically turned on only during the time when a specific reserved page in the teletext program required by the viewer is broadcast, and the reception processing, signal processing, and output processing can be performed. As a result, unnecessary power consumption can be eliminated, and power consumption can be reduced.

[0006]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be specifically described below based on embodiments. FIGS. 1 to 6 show an embodiment of a broadcast receiving apparatus according to the present invention, which is applied to a teletext receiving apparatus. FIG. 1 shows a broadcast receiving apparatus 1 according to an embodiment of the present invention.
FIG. 2 is a block diagram of the broadcast receiving apparatus 1.
Tuner 3, VIF 4, microprocessor 5, error detector 6, text VRAM 7, CG 8, display controller 9, display unit 10, CPU 11, memory 12, keyboard 13, original signal generator 14, frequency divider 15, power supply 16, etc. It has. The broadcast receiving apparatus 1 is capable of receiving a broadcast in which a text broadcast or a program of a specific item is repeatedly performed in page units.

[0007] A power supply device (power supply means) 16 converts power from an external power supply or a battery (not shown) into a predetermined voltage, and supplies the predetermined voltage to each unit of the broadcast receiving apparatus 1. This power supply 1
6, a control signal from the CPU 11 is input, and the power supply 16 starts and stops power supply according to the control signal.

[0008] The broadcast receiving apparatus 1 receives a broadcast wave via its antenna (receiving means) 2, and the broadcast wave received by the antenna 2 is sent to a tuner 3. The tuner (tuning means) 3 is a so-called electronic tuner including a coil, a capacitor, a resistor, and the like, and operates under the control of the CPU 13. The tuner 3 tunes a radio wave of the frequency specified by the CPU 13, extracts a signal of the frequency, and outputs the signal to the VIF 4.

The VIF 4 includes a demodulation circuit, a detection circuit, and the like, demodulates and detects a signal input from the tuner 3, and extracts a video signal portion from the signal.

The microprocessor 5 includes an A / D converter, a buffer, a decoder, and the like. The microprocessor 5 converts an analog video signal input from the VIF 4 into a digital signal by the A / D converter. And store it in a buffer. The microprocessor 5 decodes the input signal converted into a digital signal by the decoder and converts the input signal 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, which detects the number of errors therein and determines the detected number of errors. Output to the processor 5 and the CPU 11.

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

The CG 8 stores a display dot pattern corresponding to the size and the 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 comprises an input order counter and a display position control circuit. The display controller 9 converts a position signal and a display signal so that a dot pattern sequence input from the CG 8 is sequentially displayed from the upper left to the lower right of the display screen. Generated and output to the display unit 10.

The display unit (output means) 10 is a Y-CTR 2
1, an X-CTR 22 and an LCD (liquid crystal display) 23. The LCD 23 includes a Y-CTR 21 and an X-CT.
Driven by the drive signal from R22. Y-CTR2
1 and the X-CTR 22 output to the LCD 23 a drive signal for controlling the 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.
1 and are turned on (for example, black display) or turned off (transparent display) by the drive signal from the X-CTR 22.

The CPU 11 comprises a microprocessor, R
OM (Read Only Memory) and RAM (Random Access M)
emory) and the like, and in the ROM, a program as the broadcast receiving apparatus 1 and a broadcast time determination processing program for determining a broadcast time of a reserved page of a reserved broadcast program described later;
A reception control processing program and the like for performing reception and signal processing by turning on the power only during the broadcast time of the reserved page are stored, and the number of a selectable channel and the frequency corresponding to the channel number are stored. RAM
Is used as a work memory, and a microprocessor controls each unit of the broadcast receiving apparatus 1 according to a program in the ROM to function as the broadcast receiving apparatus 1. C
The PU 11 controls the tuner 3 and the microprocessor 5 in accordance with the program selected by the keyboard 13 to select the selected program, and searches the reservation information stored in the memory 12 as described later. Then, it is determined whether it is the broadcast time of the reserved page of the reserved program, and only during the broadcast time, the power supply device 16 is controlled to turn on the power so that the receiving process, the signal process, and the display output process are performed. Therefore, when a reserved program is designated, the CPU 11 functions as a broadcast time discriminating means for discriminating whether a broadcast start time or a broadcast end time of a reserved page of the reserved program, and powers up only the broadcast time of the reserved page And functions as control means for performing each processing of reception and output.

As shown in FIG. 2, the keyboard 13 has an item selection key 31, a program selection key 32, a channel selection key 33, a power on / off key (ON / OFF) 34,
It includes a forward scroll key 35, a return scroll key 36, a page selection key 37, a registration key 38, and the like, and performs various operations on the broadcast receiver 1. An item of a program to be selected in advance (for example, an item indicating the type of a program such as weather, traffic information, stock price information, news, and cooking) can be selected by the item key 31.
Can select a channel of a broadcasting station. In addition, a program of each channel can be selected with the program selection key 32, and the power of the broadcast receiving apparatus 1 can be turned on / off with the on / off key 34. The scroll keys 35 and 36 are used to scroll a plurality of items stored in advance in the ROM of the CPU 11 and a plurality of items registered in the memory 12 to be described later in forward or reverse order when the respective item keys 31 are turned on. When the program key 32 is turned on, scrolling of selectable programs can be performed. further,
When the channel key 33 is turned on, the selectable channels can be selected by the scroll keys 35 and 36.

A page selection key 37 and a registration key 38 are keys used to register a program to be reserved in the memory 12 and a page to be reserved. The page selection key 37 is a reception key stored in the memory 12 for each page. LCD 23 from information (broadcast contents)
Used to specify the page to be displayed and output on.

The memory 12 is composed of a RAM or the like, and stores reservation information and broadcast contents. That is, the memory 12
As shown in FIG. 3, the storage area is largely divided for each item, and the storage area of each item stores a channel number, a program, and a reserved page in association with each other as a reserved program. In each of the reserved programs, a page desired to be received among the programs can be stored as a reserved page, and a plurality of reserved pages can be registered for each program. The registration of items, channels, programs and reserved pages in the memory 12 can be performed by operating the keyboard 13.
That is, when the item key 31 is turned on, only one item is read from the ROM and displayed on the LCD 23. When the displayed item is not the desired item, the scroll keys 35 and 36 are operated to sequentially switch the displayed item. When the desired item is displayed, the registration key 38 is turned on to select the item. When an item is selected, the CPU 11 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-described processing for the items to be registered. Similarly, when registering a channel and a program corresponding to each item, a channel key 33 and a program key 32 are input, and a desired channel number and a program are set with the scroll keys 35 and 36 on the LCD 2.
3 and the corresponding channel number or program is displayed, the registration key 38 is turned on and the channel number or program is selected. Next, a reserved page is registered for each program. To register a reserved page, the user presses the page selection key 37 of the keyboard 13 to set the page designation mode, and then operates the scroll keys 35 and 36 to sequentially select pages to be displayed on the LCD 23 to select a desired reserved page. The desired reservation page is LCD
23, the registration key 38 is entered and the memory 1
2 is registered in the page storage area of the corresponding item, channel and program. When registering multiple pages for the same program,
A similar process is performed to register a desired page as a reserved page. When a reserved page is registered for another item or program, an item, a channel, and a program are selected in the same manner as described above, and similarly, the reserved page is designated and registered in the memory 12. Therefore, the memory 12 functions as a reserved page storage unit for storing a reserved page in a broadcast program received by the receiving unit.

It is needless to say that the registration of a channel number and a program and the registration of a reserved page are not limited to the above method.

The original signal generator 14 is a so-called crystal oscillator composed of a crystal, a resistor, a capacitor, and the like, and generates an original clock signal having a constant frequency.

The frequency dividing circuit 15 is formed, for example, by combining several stages of binary counters.
The original clock signal input from the original signal generator 14 is frequency-divided to generate a 1 Hz clock signal that can be used as a clock reference signal, and outputs it to the CPU 11. CPU11
Calculates the current time by the clock signal from the frequency dividing circuit 15 and displays the current time on the LCD 23,
It is used for various controls such as turning on / off the power of the broadcast receiving apparatus 1.

Next, the operation will be described. Broadcast receiving device 1
Can also display the time, and when the broadcast is not being received, the time is displayed on the LCD 23. That is, when the on / off key 34 of the keyboard 13 is turned off, the broadcast receiving device 1
11, the present time is measured by the clock signal input from the frequency dividing circuit 15, the display position is determined, and the text V
The current time information is output to a corresponding position in the RAM 7.
The current time information is output from the text VRAM 7 to the display controller 9 via the CG 8 to display the current time 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
6 is a control signal for instructing ON (for example, "H" signal)
The power supply device 16 supplies power to the tuner 3, the VIF 4, the microprocessor 5, and the error detector 6 when a control signal instructing to turn 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, a signal of a frequency corresponding to a predetermined channel is extracted by the tuner 3 from the broadcast wave received by the antenna 2,
After performing demodulation and detection processing by the VIF 4, the CPU 11 selects a video signal corresponding to the program specified by the CPU 11 and outputs the video signal to the microprocessor 5. Microprocessor 5
Converts an image signal into a digital signal by an A / D converter, stores the image signal in a buffer for each scanning line, outputs the signal to an error detector 6, and causes the error detector 6 to detect the error signal. The error detector 6 outputs the number of detected errors to the microprocessor 5 and the CPU 11. When the number of errors is within an error recoverable range, the microprocessor 5 decodes the error with a built-in decoder and outputs it to the text VRAM 7. I do. The text VRAM 7 sequentially changes the character code and the size from the upper left to the lower right of the display screen by CG.
The CG 8 outputs a pattern corresponding to the data sent from the text VRAM 7 to the display controller 9.
The display controller 9 determines the display position and the display content, and controls the Y-CTR 21 and the X-CTR 22. Y-CTR21 and X-CTR22 are LCD
The drive signal is output to the LCD 23 to display the content corresponding to the corresponding position on the LCD 23. This broadcast receiving device 1
Broadcast radio waves transmitted in page units are received, the above-described reception processing and decoding processing are performed in page units, and displayed and output on the LCD 23. Received data (broadcast contents) is stored in the memory 12 in page units.
Is stored.

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

A normal operation of changing the display contents is performed by operating the program key 32 or the channel key 33 of the keyboard 13. In other words, to change the program,
The program can be changed sequentially by turning on the program key 32 and operating the scroll keys 35 and 36. When changing the channel, the channel key 33 is turned on and the scroll keys 35 and 36 are operated. Can change the channel. At this time, C
The PU 11 sends the selected channel number to the tuner 3
To output the radio wave of the corresponding channel, output the program to the microprocessor 5, and make the microprocessor 5 select a video signal corresponding to the program to perform decoding and display processing. The viewer has completed the selection when the program of the desired channel is displayed.

However, conventionally, when the power is turned on and a program is selected, reception processing is performed even if the page of the selected program is not the page desired by the viewer, signal processing is performed, and display output is performed. Therefore, the viewer has to turn on the power of the broadcast receiving apparatus 1 until the target page is broadcast, and perform a receiving process, a signal process, and a display output. Therefore, unnecessary power has been consumed.

Therefore, in the broadcast receiving apparatus 1, when a viewer registers a reserved page of a target program, the viewer turns on the power only for the broadcast time of the reserved page of the registered program to perform a reception process and the like. Saving power consumption.

That is, as shown in FIG.
Checks whether the received page is in the reception page designation mode, that is, whether the reserved page is registered in the memory 12 in a state where the power is not turned on (step S1). That is, as described above, when the power is turned on and channel selection is performed,
The reception / decoding and display processing of the selected program is performed (step S2).

If the received page designation mode is set in step S1, the CPU 11 instructs the power supply unit 16 to supply power, and performs a reception / decoding process of the reserved program (step S1).
3) The broadcast time of the reserved page is determined based on the reception / decoding processing (step S4).

The broadcast time of the reserved page differs depending on the broadcast form of the reserved program and the broadcast cycle of the reserved page, and is determined as follows.

As shown in FIG. 5, it is assumed that a reserved program is an X program, a program other than the reserved program is a Y program, and three pages of the X program are registered as reserved pages. It is also assumed that the channel for broadcasting the reserved program has a transmission mode in which all pages of the X program are transmitted first, and then all pages of the Y program are transmitted. In this case, the broadcast time of the reserved page of the reserved program can be determined by receiving the reserved page of the reserved program at least twice. That is, FIG.
At the time when the third page of the X program is first received,
Next, the time until the third page of the X program is received is counted, and the reserved page of the reserved program is broadcasted thereafter based on the cycle time when the reserved page is broadcast and the current time when the second broadcast is received. It can be determined by calculating the time.

As shown in FIG. 6, the broadcast form of the channel for broadcasting the reserved program is to broadcast the X, Y and Z programs. Assuming that the program is an X program and the reserved page is three pages, three pages of the X program are received first, and after receiving another program or another page of the reserved program, the next three pages of the X program are received. From the cycle time up to and the current time at which the reserved page is received for the second time, it is possible to determine the time at which the reserved page of the reserved program is broadcast thereafter.

When the broadcast time of the reserved page is determined in this way, the determined broadcast time is stored in the memory 12 or the CP.
It is stored in the RAM or the like of U11 and used for the reserved page determination process.

[0035] then verify the received page designation mode again (step S5), and when the received page designating mode has been released, the process proceeds to the normal process (step S
2). If the reception page designation has not been released, it is checked whether or not the broadcast time of the reserved page is a predetermined time before (step S6). If not, the power is turned off and the step S5 is performed. (Step S7). Similarly, it is checked whether the reception page is in the reception page designation mode and whether or not it is before the designated time of the broadcast time of the reserved page (steps S5 and S6). S2) If the received page designation mode is not canceled, the power supply is stopped and the apparatus waits until a predetermined time before the broadcast time of the reserved page. When a predetermined time comes before the broadcast time of the reserved page, the CPU 1
1 instructs the power supply 16 to supply power and turns on the power (step S8). When power is supplied, C
The PU 11 controls the tuner 3 and the microprocessor 5 to start receiving a reserved program, and when receiving a reserved page of the reserved program, performs a decoding process and a display process. The decrypted program data of the reserved page is stored in the storage area (step S9). When the reception and decoding processing of the reserved page is completed, it is checked whether the reception / decoding processing of all the reserved pages registered in the memory 12 is completed (step S10). , Then proceeding to step S5,
Similarly, it is checked whether the reception page designation mode has been canceled and whether the broadcast time of the reserved page has come a predetermined time before (step S6). At this time, if a plurality of pages have been registered as reserved pages, and if there is more than a predetermined time until the broadcast time of the next reserved page, the process proceeds to step S7 to stop the power supply, and similarly, It is checked whether the mode has been canceled or whether the broadcast time of the reserved page has come a predetermined time before. Thereafter, similarly, the reception / decoding process of the reserved page and the storage process in the memory 12 are performed (Step S).
8, S9, S10), when the received page designation mode is released, the processing shifts to the normal processing.

Therefore, the viewer registers the required page of the required program as a reserved page, so that the broadcast receiving apparatus 1 automatically determines the broadcast time of the reserved page, and when the reserved page is broadcast, Only when the power is turned on, the receiving / decoding process and, when necessary, the storing process in the memory 12 are performed.
Therefore, it is not necessary to keep the power of the broadcast receiving apparatus 1 turned on when unnecessary programs and pages are being broadcast, and power consumption can be saved. In addition, by storing the broadcast contents (program contents) of the reserved page in the memory 12, necessary information can be promptly obtained when necessary, and the usability of the broadcast receiving apparatus 1 is improved. Can be.

[0037]

According to the present invention, power can be automatically turned on only during the time when a specific reserved page in a broadcast program required by a viewer is broadcast, and reception processing and signal processing can be performed. . As a result, unnecessary power consumption can be eliminated, and power consumption can be reduced.

[Brief description of the drawings]

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

FIG. 2 is an exemplary front view of a keyboard of the broadcast receiving device of FIG. 1;

FIG. 3 is a view showing a storage state of reservation information and broadcast contents in a memory of FIG. 1;

FIG. 4 is a flowchart showing a reserved program receiving process and a power control process.

FIG. 5 is a diagram showing an example of a broadcast form of a program.

FIG. 6 is a diagram showing another example of a broadcast form of a program.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Broadcast receiving apparatus 2 Antenna 3 Tuner 5 Microprocessor 6 Error detector 1 Display part 11 CPU 12 Memory 13 Keyboard 14 Original signal generator 15 Divider circuit 16 Power supply device

Claims (3)

(57) [Claims] 1. A receiving means for receiving a broadcast wave in which a broadcast program is broadcast in a page unit; an output means for outputting a text broadcast program corresponding to the broadcast wave received by the receiving means; A reserved page number storing means for storing a reserved page number in a text broadcast program, and a receiving page having a reserved page number stored in the reserved page number storing means at least twice received by the receiving means.
The broadcast cycle of the reserved page to determine
A broadcast time determining means for determining a broadcast start time or a broadcast end time of about a page ; a power supply means; and a reserved page number stored in the reserved page number storage means based on a determination result of the broadcast time determining means. The power supply unit automatically supplies power to each unit of the broadcast receiving apparatus only during the time when the reserved page is broadcast, and controls the receiving unit and the output unit to receive and output the reserved page. A broadcast receiving apparatus comprising: 2. A broadcast content storage means for storing a text broadcast program of the reserved page when the receiving means receives a reserved page having the reserved page number stored in the reserved page number storage means. The broadcast receiving device according to claim 1, wherein 3. The broadcast receiving apparatus according to claim 1, wherein the broadcast radio waves broadcast in page units by the receiving means are teletext radio waves.