JP3611001B2 - Receiving method and receiving apparatus - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a receiving method and a receiving apparatus, and in particular, when a predetermined operation unit is operated, a receiving method for displaying a title of a program and a mark corresponding to a broadcasting station that broadcasts the program together with a video of the program. The present invention relates to a receiving device.
[0002]
[Prior art]
In conventional television broadcasting using terrestrial waves, the number of broadcast stations that provide programs (that is, the number of channels) is not so large. By displaying the channel number corresponding to the broadcast station on the CRT or the like, the currently selected channel number (that is, the broadcast station) is notified to the user (viewer).
[0003]
[Problems to be solved by the invention]
However, in the above-described method, when multi-channel broadcasting such as digital satellite broadcasting is started in the future and the number of channels is greatly increased, it is only necessary to notify the currently selected channel number. There is a problem that it is difficult to recognize the corresponding broadcasting station, and it is difficult for the user to intuitively know the currently selected broadcasting station without looking at the program guide or the like.
[0004]
The present invention has been made in view of such a situation, and displays a mark corresponding to a broadcasting station that broadcasts the program along with the video of the program so that the user can intuitively know the currently selected broadcasting station. It is to inform.
[0005]
[Means for Solving the Problems]
According to the first aspect of the present invention, when the first operation unit is operated, the broadcast station corresponding to the operation is selected, and the video of the program broadcast by the selected broadcast station is displayed and selected. A state in which a mark corresponding to the selected broadcast station is displayed together with a video of the program broadcast by the selected broadcast station, a state in which the mark and the selected broadcast station display the title of the program being broadcast, or A state in which the mark and title are erased is displayed by sequentially switching in a predetermined order each time the second operation unit is operated .
[0006]
When the first operation unit is operated , the receiving device according to claim 5 selects a broadcast station corresponding to the operation, displays a video of a program broadcast by the selected broadcast station, and is selected. A state in which a mark corresponding to the selected broadcast station is displayed together with a video of the program broadcast by the selected broadcast station, a state in which the mark and the selected broadcast station display the title of the program being broadcast, or It is characterized by comprising processing means for sequentially switching and displaying the erased mark and title in a predetermined order each time the second operation unit is operated .
[0007]
In the receiving method according to the first aspect , when the first operation unit is operated, a broadcasting station corresponding to the operation is selected, and an image of a program broadcast by the selected broadcasting station is displayed. And a state in which a mark corresponding to the selected broadcast station is displayed together with a video of the program broadcast by the selected broadcast station, a state in which the mark and the selected broadcast station display the title of the program being broadcast, or The state in which the displayed mark and title are erased is sequentially switched and displayed in a predetermined order each time the second operation unit is operated .
[0008]
In the receiving apparatus according to the fifth aspect, when the first operation unit is operated, a broadcasting station corresponding to the operation is selected, and an image of a program broadcast by the selected broadcasting station is displayed. And a state in which a mark corresponding to the selected broadcast station is displayed together with a video of the program broadcast by the selected broadcast station, a state in which the mark and the selected broadcast station display the title of the program being broadcast, or The state in which the displayed mark and title are erased is sequentially switched and displayed in a predetermined order each time the second operation unit is operated .
[0009]
DETAILED DESCRIPTION OF THE INVENTION
FIG. 1 shows a configuration example of an AV (Audio Video) system to which the present invention is applied. In this embodiment, the AV system is an IRD (Integrated Receiver / Decoder) that demodulates a signal received by a parabolic antenna 1 from a radio wave transmitted from a transmitting device (not shown) via a satellite (broadcast satellite or communication satellite). ) 2 and a television receiver 3.
[0010]
A command can be input to the IRD 2 (or the television receiver 3) by an infrared (IR) signal from the remote commander 6. That is, when a predetermined switch of the remote commander 6 is operated, the corresponding IR signal is emitted from the IR signal transmitting unit 72 (FIG. 4) and incident on the IR signal receiving unit 39 (FIG. 2) of the IRD2. It is made like that.
[0011]
The IRD 2 supplies its output to the television receiver 3 via an AV line 4 constituted by, for example, three lines of a composite video signal line, an audio L signal line, and an audio R signal line. Further, the IRD 2 has an AV device control signal transmission / reception unit 2A, and the television receiver 3 has an AV device control signal transmission / reception unit 3A. These are connected to each other by a control line 5 made of wired SIRCS (Wired Sony Infrared Remote Control System) (trademark).
[0012]
FIG. 2 shows a configuration example of the front of the IRD 2. A lid 52 is provided at the center of the casing 51 so as to be freely opened and closed so that the IC card 33 can be mounted therein. A power key 53 is provided on the left side of the IRD 2. The power key 53 is operated when the power is turned on or off. Below the power key 53, an IR signal receiving unit 39 for receiving an IR signal from the remote commander 6 is provided.
[0013]
The LED 55 is turned on when a predetermined message is transmitted to the IRD 2 via a satellite. When the user outputs this message to the television receiver 3 for display and confirms this, the LED 55 is turned off. An LED 56 disposed below the LED 55 is lit when the IRD 2 is communicating via a telephone line.
[0014]
The program guide key 57 and the menu key 58 are operated when displaying an electronic program guide or menu on the television receiver 3, respectively.
[0015]
Up key 61, down key 62, left key 63, and right key 64 are annularly arranged on the upper, lower, left and right sides of the determination key 65. The up key 61, the down key 62, the left key 63, and the right key 64 (hereinafter, these keys are also referred to as direction keys as appropriate) are operated when the cursor is moved in the vertical and horizontal directions. The determination key 65 is operated when selecting (selecting) selection. The channel up key 59 and the channel down key 60 are operated when the received channel is up or down.
[0016]
FIG. 3 shows an internal configuration example of the IRD 2. An RF signal output from an LNB (Low Noise Block downconverter) 1a of the parabolic antenna 1 is supplied to the tuner 21 of the front end 20 and demodulated. The output of the tuner 21 is supplied to the QPSK demodulating circuit 22 and QPSK demodulated. The output of the QPSK demodulator circuit 22 is supplied to an error correction circuit 23, where an error is detected and corrected, and is corrected as necessary.
[0017]
An IC card 33 composed of a CPU, a ROM, a RAM, and the like stores a key necessary for decrypting a cipher together with a decryption program. When a signal transmitted via a satellite is encrypted, a key and a decryption process are required to decrypt the encryption. Therefore, this key is read from the IC card 33 via the card reader interface 32 and supplied to the demultiplexer 24. The demultiplexer 24 uses this key to decrypt the encrypted signal.
[0018]
The IC card 33 stores accounting information as well as keys and decryption programs necessary for decryption.
[0019]
The demultiplexer 24 receives a signal output from the error correction circuit 23 of the front end 20 and temporarily stores it in a data buffer memory (DRAM (Dynamic Random Access Memory) or SRAM (Static Random Access Memory)) 35. Then, this is read out as appropriate, the decoded video signal is supplied to the MPEG video decoder 25, and the decoded audio signal is supplied to the MPEG audio decoder 26.
[0020]
The MPEG video decoder 25 appropriately stores the input digital video signal in the DRAM 25a, and executes a decoding process of the video signal compressed by the MPEG method. The decoded video signal is supplied to the NTSC encoder 27 and converted into an NTSC luminance signal (Y), chroma signal (C), and composite signal (V). The luminance signal and the chroma signal are respectively output as S video signals via the buffer amplifiers 28Y and 28C. The composite signal is output from the buffer amplifier 28V via the AV line 4.
[0021]
As the MPEG video decoder 25, an MPEG2 decoding LSI (STi3500) manufactured by SGS-Thomson Microelectronics can be used. The outline is introduced by Martin Bolton, for example, in Nikkei BP "Nikkei Electronics" 1994.14 (no. 603), pages 101 to 110.
[0022]
The MPEG2-Transportstream is described in “Latest MPEG Textbook” on pages 231 to 253 issued on August 1, 1994 by ASCII Corporation.
[0023]
The MPEG audio decoder 26 appropriately stores the digital audio signal supplied from the demultiplexer 24 in the DRAM 26a, and executes the decoding process of the audio signal compressed by the MPEG method. The decoded audio signal is D / A converted by the D / A converter 30, the left channel audio signal is output from the buffer amplifier 31L via the AV line 4, and the right channel audio signal is output from the buffer amplifier 31R. Are output via the AV line 4.
[0024]
The RF modulator 41 converts the composite signal output from the NTSC encoder 27 and the audio signal output from the D / A converter 30 into an RF signal and outputs the RF signal. In addition, when the TV mode is set, the RF modulator 41 passes an NTSC RF signal input from an AV device such as a cable box to the VCR or other AV device (none of which is shown). Output as is.
[0025]
In the case of this embodiment, these video signals and audio signals are supplied to the television receiver 3 via the AV line 4.
[0026]
A CPU (Central Processing Unit) 29 executes various processes in accordance with programs stored in the ROM 37. For example, the tuner 21, the QPSK demodulation circuit 22, the error correction circuit 23, and the like are controlled. Further, the AV device control signal transmission / reception unit 2A is controlled, and a predetermined control signal is output to another AV device (in this embodiment, the television receiver 3) via the control line 5. Receive control signals from AV equipment.
[0027]
A predetermined command can be directly input to the CPU 29 by operating various keys (FIG. 2) on the front panel 40. When the remote commander 6 (FIG. 4) is operated, an IR signal is emitted from the IR signal transmission unit 72, the IR signal is received by the IR signal reception unit 39, and the light reception result is supplied to the CPU 29. Accordingly, a predetermined command can be input to the CPU 29 also by operating the remote commander 6.
[0028]
The demultiplexer 24 captures EPG (Electrical Program Guide) data and the like in addition to the MPEG video data and audio data supplied from the front end 20, and supplies them to the EPG area 35 A of the data buffer memory 35 for storage. EPG information is information about programs of each broadcast channel up to 24 hours after the current time (in the case of EPG2 and EPG1-2) or 150 hours later (in the case of EPG2, EPG3, EPG1-2, and EPG1-3) (for example, In addition to the still image of the program, channel, broadcast time, title, category, etc.) are included. Since this EPG information is frequently transmitted, the latest EPG can always be held in the EPG area 35A.
[0029]
In an EEPROM (Electrically Erasable Programmable Read Only Memory) 38, data (for example, reception history for 4 weeks of the tuner 21 and the channel number received immediately before a predetermined operation is performed) after the power is turned off are stored. Last channel)) and the like are stored as appropriate. This memory is used, for example, when the same channel as the last channel is received again when the power is turned on. When the last channel is not stored, the channel stored as a default in the ROM 37 is received.
[0030]
Further, when the sleep mode is set, the CPU 29 operates the minimum circuits such as the front end 20, the demultiplexer 24, and the data buffer memory 35 even when the power is off, and is included in the received signal. The current time is counted from the time information, and control for causing each circuit to perform a predetermined operation at a predetermined time is also executed. For example, timer automatic recording is executed in conjunction with an external VCR.
[0031]
Further, the CPU 29 controls the MPEG video decoder 25 when it is desired to generate predetermined OSD (On-Screen Display) data. In response to this control, the MPEG video decoder 25 generates predetermined OSD data, writes it to the OSD area of the DRAM 25a, reads it out, and outputs it. Thereby, predetermined characters, figures, images (for example, characters, symbols, icons, screens superimposed on a normal screen) and the like can be appropriately output to the television receiver 3 for display.
[0032]
The SRAM 36 is used as a work memory for the CPU 29. The modem 34 exchanges data via a telephone line under the control of the CPU 29.
[0033]
FIG. 4 shows a configuration example of the remote commander 6. An IR signal transmitter 72 for generating an IR signal corresponding to the operation of various keys is provided at the upper part. The power key 73 is operated when the power of the IRD 2 is turned on or off, and the television power key 74 is operated when the power of the television receiver 3 is turned on or off. The mute key 75 is operated when the audio signal is muted or unmuted. The switch key 76 is operated when the IRD 2 is remotely controlled by the remote commander 6, and the switch key 77 is operated when the television receiver 3 is remotely operated by the remote commander 6.
[0034]
The input switching key 78 is operated when switching the input to the IRD 2 or the television receiver 3. The screen display key 79 is operated to switch a state in which characters of a predetermined electronic program guide are displayed on the television receiver 3. The dual voice key 80 is operated when switching a plurality of channels as voice channels.
[0035]
The numeric keypad 81 is operated when inputting numbers from 0 to 9. The number 0 key and the “channel selection” key are operated when the number 10 or 12 is input, and the key arranged between the two is operated when the number 11 is input.
[0036]
The menu key 82 is operated when displaying a menu, and the promotion key (promo key) 83 is operated when displaying a promotion channel. The program explanation key 84 is operated to display program explanation information in the electronic program guide. The multi key 85 is operated as an electronic program guide when displaying a reduced screen of each broadcast channel on one screen as, for example, 4 × 4 multi screens. The program guide key 86 is operated when displaying an electronic program guide. The jump key 87 is operated when shifting to the last channel.
[0037]
An up key 88, a down key 89, a left key 90, and a right key 91 (these keys are also referred to as direction keys as appropriate hereinafter) are operated to move the cursor in the vertical and horizontal directions, respectively. The arranged decision key 92 is operated when inputting a decision of selection. The channel up / down key 94 is operated when incrementing or decrementing the received channel by one. The up key 88, down key 89, left key 90, right key 91, and enter key 92 are an up key 61, a down key 62, a left key 63, a right key 64 and a enter key provided in the main body of the IRD 2 shown in FIG. It corresponds to the key 65, and its arrangement shape also corresponds. The channel up / down key 94 corresponds to the channel up key 59 and the channel down key 60 of FIG.
[0038]
The volume up / down key 93 is operated when the volume is increased or decreased by a certain amount.
[0039]
Next, the basic operation will be described. When the user operates, for example, the numeric keypad 81 of the remote commander 6 to input a predetermined channel number, an IR signal corresponding to the input number is output from the IR signal transmission unit 72. This IR signal is received by the IR signal receiver 39 of IRD2. When receiving a signal corresponding to the IR signal from the IR signal receiving unit 39, the CPU 29 controls the tuner 21 to receive the channel corresponding to the input number.
[0040]
The tuner 21 demodulates the signal corresponding to the channel number designated by the CPU 29 from the signal supplied from the LNB 1 a and outputs the demodulated signal to the QPSK demodulation circuit 22. The signal QPSK demodulated by the QPSK demodulator 22 is further input to the error correction circuit 23, subjected to error correction processing, and then input to the demultiplexer 24. In the demultiplexer 24, the input data is separated into video data and audio data, and the video data is supplied to the MPEG video decoder 25 and the audio data is supplied to the MPEG audio decoder 26, respectively. The MPEG video decoder 25 decodes the input video data by the MPEG method and then outputs it to the NTSC encoder 27. The NTSC encoder 27 converts the input video data into an NTSC video signal. This video signal is supplied to the television receiver 3 via the AV line 4 as a composite video signal via the amplifier 28V, for example.
[0041]
Note that the received program data includes video data and audio data as well as the title of the program and the logo mark data of the broadcasting station. These data are supplied from the demultiplexer 24 to the CPU 29. Further, it is stored in the SRAM 36.
[0042]
Also, the MPEG audio decoder 26 decodes the input audio data by the MPEG method and outputs it to the D / A converter 30. The D / A converter 30 performs D / A conversion on the input audio data, and outputs it as left and right analog audio signals via the amplifiers 31L and 31R. This audio signal is also output to the television receiver 3 via the AV line 4. In this way, the image and sound of the program instructed by the user operating the remote commander 6 are output to the television receiver 3.
[0043]
Next, referring to the flowchart of FIG. 5, when switching the display of the channel number, the logo of the broadcasting station, and the title of the program when the video of the predetermined program is displayed on the television receiver 3 Will be described.
[0044]
First, in step S1, the CPU 29 stands by until the screen display key 79 of the remote commander 6 is operated. At this time, for example, only the video of the program is displayed as shown in FIG.
[0045]
When the screen display key 79 is operated in step S1 and a signal corresponding to the operation is supplied via the IR signal receiving unit 39, the CPU 29 broadcasts the program in step S2. The logo mark data is read from the SRAM 36, and the logo mark 101 and the channel number 102 are displayed at a predetermined position (for example, above the screen) of the television receiver 3 as shown in FIG.
[0046]
Next, in step S3, the CPU 29 stands by until the screen display key 79 of the remote commander 6 is operated. At this time, the video of the received program continues to be displayed.
[0047]
In step S3, when the screen display key 79 is further operated and a signal corresponding to the operation is supplied via the IR signal receiver 39, the CPU 29 in step S4, as shown in FIG. In addition to the mark 101 and the channel number 102, the title 103 of the currently displayed program is displayed at a predetermined position (for example, above the screen) of the display unit of the television receiver 3.
[0048]
Next, in step S5, the CPU 29 stands by until the screen display key 79 of the remote commander 6 is operated. At this time, the video of the received program continues to be displayed.
[0049]
In step S5, when the screen display key 79 is further operated and a signal corresponding to the operation is supplied via the IR signal receiver 39, the CPU 29, in step S6, displays the displayed logo mark 101, The channel number 102 and the program title 103 are deleted from the screen. Therefore, only the video of the program is displayed as shown in FIG.
[0050]
Next, the process returns to step S1 and waits until the screen display key 79 of the remote commander 6 is operated again. Every time the screen display key 79 of the remote commander 6 is operated, the logo mark 101 of the broadcasting station and the channel number 102 are displayed. The display of the program title 103 is switched.
[0051]
As described above, the display of the logo mark of the broadcasting station, the channel number, and the title of the program is switched. By displaying the logo mark of the broadcasting station in this way, the currently selected broadcasting station can be intuitively recognized even when there are many channels.
[0052]
Furthermore, by displaying the title of the program in addition to the logo mark of the broadcasting station, it is possible to easily know the title of the program without referring to the program guide or the like. Also, a program that has been scrambled, such as a pay program or an age-restricted program, can be processed from the title without performing descrambling (that is, before displaying the program video). Can understand the contents of
[0053]
Further, since the display can be switched by operating the image display key 79, the display of the channel number, the logo of the broadcasting station, and the title of the program is an obstacle when viewing the video of the program. In such a case, the display can be appropriately deleted.
[0054]
In the above embodiment, the data of the logo mark of the broadcast station is received together with the video of the program. For example, the data of the logo mark of the broadcast station is stored in advance in the ROM 37 or the EEPROM 38 and selected. You may make it display the logo mark of the broadcasting station corresponding to the channel number which exists.
[0055]
【The invention's effect】
As described above, according to the receiving method according to claim 1 and the receiving device according to claim 5, when the first operation unit is operated, the broadcasting station corresponding to the operation is selected and selected. The video of the program broadcast by the broadcasting station is displayed. And a state in which a mark corresponding to the selected broadcast station is displayed together with a video of the program broadcast by the selected broadcast station, a state in which the mark and the selected broadcast station display the title of the program being broadcast, or Since the displayed mark and title are erased, each time the second operation unit is operated, the display is switched in order in a predetermined order so that the currently selected broadcasting station can be viewed intuitively. Can be recognized.
[Brief description of the drawings]
FIG. 1 is a block diagram illustrating a configuration example of an AV system to which the present invention is applied.
FIG. 2 is a diagram showing a configuration example of the front of the IRD 2 in FIG.
FIG. 3 is a block diagram showing an example of the internal configuration of the IRD 2 in FIG. 1;
4 is a diagram showing a configuration example of a remote commander 6 in FIG. 1. FIG.
FIG. 5 is a flowchart illustrating an operation when switching display of a logo mark or the like of a broadcasting station.
FIG. 6 is a diagram illustrating an example of a video of a program.
FIG. 7 is a diagram illustrating an example of a logo mark and a channel number of a broadcasting station displayed together with a program video.
FIG. 8 is a diagram showing an example of display of a program title, a broadcast station logo mark, and a channel number.
[Explanation of symbols]
1 parabolic antenna, 2 IRD, 3 television receiver, 6 remote commander, 21 tuner, 23 error correction circuit, 24 demultiplexer, 25 MPEG video decoder, 25a DRAM, 26 MPEG audio decoder, 26a DRAM, 29 CPU, 35 data Buffer memory, 35A EPG area, 36 SRAM, 37 ROM, 38 EEPROM, 39 IR signal receiver

Claims (5)

Receiving a signal including a predetermined program broadcast by a predetermined broadcasting station;
In the receiving method of processing the signal and displaying the video of the program on a predetermined display unit,
When the first operation unit is operated, the broadcast station corresponding to the operation is selected,
Display the video of the program broadcast by the selected broadcast station,
A state in which a mark corresponding to the selected broadcast station is displayed together with a video of a program broadcast by the selected broadcast station, and a state in which the mark and the title of the program being broadcast by the selected broadcast station are displayed. Alternatively, the state in which the displayed mark and the title are erased is sequentially switched and displayed in a predetermined order each time the second operation unit is operated. Method. The receiving method according to claim 1, wherein together with the title or the mark, and displaying the channel number corresponding to a broadcast station that broadcasts the program. The reception method according to claim 1, wherein the mark and the title are respectively displayed at predetermined positions on the display unit . The reception method according to claim 1, wherein the mark is displayed by reading the data of the mark stored in advance in a memory . Receiving means for receiving a signal including a predetermined program broadcast by a predetermined broadcasting station;
In a receiving device comprising processing means for processing the signal and displaying the video of the program on a predetermined display unit,
When the first operation unit is operated , the processing means selects the broadcast station corresponding to the operation, displays a video of a program broadcast by the selected broadcast station, and selects the selected broadcast A state of displaying a mark corresponding to the selected broadcast station, a state of displaying the title of the program being broadcast by the mark and the selected broadcast station, or displayed together with a video of a program broadcast by the station The receiving apparatus, wherein the mark and the title erased state are sequentially switched and displayed in a predetermined order each time the second operation unit is operated .

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