JPH10178621A - Broadcasting receiver - Google Patents

Abstract

PROBLEM TO BE SOLVED: To fast display a program table and to improve operability by stopping extraction of information in the process of execution when a new time or channel is designated and generating and displaying a display screen based on the latest designation when program information that shows a program table consisting of time bands and program names is extracted. SOLUTION: When a ten key of remote control and up, down, left and right buttons designate a time band, an information extracting circuit 208 extracts a designated time band and channel information from channel information and a packet of program schedule information which are stored in memory 204. An OSD data generating circuit 209 analyzes read information, generates data for an OSD display screen, synthesizes it with a video signal and outputs it to a television monitor. When a remote control key is continuously pressed down, a resetting circuit 211 allows execution of only information extraction processing that corresponds to the last key that is pressed and avoids extraction processing repeat of as many number as a pressed number.

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 for receiving a broadcast for transmitting information including program data together with a plurality of compressed video and audio information, and analyzing and displaying the information. To a device that

[0002]

2. Description of the Related Art Conventionally, displaying information data multiplexed on an analog broadcast has a low processing speed at a receiver because the information transmission speed is low. However, with the improvement of video and audio compression transmission technology, video and audio compression transmission is possible even in the field of broadcasting.
Multi-channel, high-quality digital broadcasting has begun.

A technique relating to a digitally compressed image transmission and display apparatus for simultaneously displaying a plurality of images and audio data transmitted by multiplexing a plurality of channels on a screen is described in, for example, Japanese Patent Application Laid-Open No. Hei 6-276508. In addition, a technology related to an OSD (On Screen Display) of a television receiver is described in, for example, JP-A-7-131734.

[0004] In digital broadcasting, not only multiple channels but also various kinds of information can be multiplexed and transmitted, so that various functions can be added. In the digital broadcasting, since it is necessary to process information data of several Mbps, efficient acquisition and display of necessary information occupies an important position as a function of the broadcast receiver.

A broadcast receiving apparatus that acquires at least channel information and program schedule information from a received signal and displays a channel schedule also needs to process enormous information data. When a next display screen generation instruction is received, it is necessary to quickly execute a display screen generation based on the latest display screen generation instruction.

FIG. 5 shows a display example of an electronic program guide which is an example of a display screen in a broadcast receiving apparatus, for example, a receiving apparatus for multi-channel digital satellite broadcasting. The electronic program guide shown in FIG. 5 includes display areas 401 to 426 for program names, display areas 450 to 459 for channel names, and a time zone designation area 46.
0 and a time designation scale 461.

When a time zone designated on the time zone designation area 460 in FIG. 5, for example, 2 hours from 19:00 to 21:00 is selected, the time designation scale 461 indicates from 19:00 to 21:00, and the program name In the display areas 401 to 426, information on the time indicated by the time designation scale 461 is displayed.

FIG. 4 shows an example of a remote controller used for such a broadcast receiving apparatus. Remote control is up key 301
, Down key 302, left key 303, right key 304
, An enter key 305, and a numeric keypad 306.

For example, if the right key 304 of the remote controller shown in FIG. 4 is pressed once in the state where the designated time zone is from 17:00 to 19:00, the time zone designation area 460 becomes the designated time zone from 19:00 to 29:00.
At 2 o'clock at 1 o'clock, the time designation scale 461 indicates from 19:00 to 21:00, and information on the time indicated by the time designation scale 461 is displayed in the display areas 401 to 426 of the program names.
However, if the right key is pressed twice consecutively, 19
If the screen from 21:00 to 23:00 is displayed after the screen from 21:00 to 21:00 is displayed, it takes time from the pressing of the key to the display of the target screen, resulting in poor operability.

[0010]

SUMMARY OF THE INVENTION The present invention addresses the problems associated with new functions by receiving digital broadcasts,
In particular, when it is necessary to process a huge amount of information data and a display screen is being generated, if a next display screen generation instruction is received, a display screen generation based on the latest display screen generation instruction is quickly executed. The purpose is to:

[0011]

SUMMARY OF THE INVENTION It is an object of the present invention to provide a broadcast receiving apparatus for acquiring at least channel information and program schedule information from a received signal and displaying a channel schedule. Program information storing means for storing the time and the channel, a specifying means for specifying the time or channel, a time measuring means for measuring a certain time after the time or channel is specified by the specifying means, and a time measuring means for measuring the certain time. After the elapse, the program information extracting means extracts channel information and program schedule information corresponding to the time or channel specified by the specifying means from the program information storing means, and the channel information and program schedule extracted by the program information extracting means. Screen generating means for generating information on a display screen A time measurement reset means for resetting the time measurement means when a time or a channel is designated by the next time designation means before a predetermined time measured by the time measurement means elapses, or channel information and program schedule Program information accumulating means for accumulating information about the program, a designating means for designating a time or a channel,
Program information extracting means for extracting channel information corresponding to the time or channel specified by the specifying means and information on the program schedule from the program information storage means;
There is a screen generating means for generating a display screen based on the channel information extracted by the program information extracting means and the information on the program schedule, and a time or channel is specified by the next specifying means when the program information is being extracted by the program information extracting means. This is achieved by providing program information extraction reset means for stopping and resetting information extraction.

[0012]

DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment in which the invention according to claim 1 is applied to a multi-channel digital satellite broadcast receiving apparatus will be described with reference to FIGS. FIG. 1 is a block diagram showing a multi-channel digital satellite broadcast receiving apparatus to which the present invention is applied. FIG. 2 is a block diagram showing the internal configuration of the control circuit 112 in the broadcast receiving device 1 shown in FIG.

In FIG. 1, a broadcast receiving apparatus 1 includes a reception signal input terminal 101, a tuner for channel selection and a demodulation circuit 102 for digital demodulation, and a transmission error caused by a correction code added to a digital signal. An error correction circuit 103 for correcting, an encryption / decryption circuit (descrambler circuit) 104 for decrypting, and a packet separation circuit 105 for selecting necessary packets from a digital signal in which a plurality of packets are multiplexed and distributing them to each circuit. An audio decoding circuit 106 for expanding the compressed audio signal, and an audio signal output terminal 107
, A video decoding circuit 108 for expanding a compressed video signal, and an OSD (On Screen Displa
y, on-screen display) signal processing circuit 1
A mixing circuit 109 for superimposing a video signal output from the video decoding circuit 108 and an OSD signal output from the OSD signal processing circuit 111; a video signal output terminal 110 to a monitor such as a television; A control circuit 112 controls the separation circuit 105 and the like and analyzes acquired data, and a remote control receiving terminal 113 for inputting settings from a user.

In FIG. 2, a control circuit 112 includes an information separation circuit 201 for separating channel information and additional information such as program schedule information input from the packet separation circuit 105 shown in FIG. 1 and a packet separation control circuit 203 for specifying a packet to be separated by the packet separation circuit 105 shown in FIG.
, A memory 204 for storing channel information and program schedule information, and a remote control receiving terminal 113 shown in FIG.
Signal analysis circuit 2 for analyzing signals input from
05, an information selection circuit 206 for selecting information displayed on the OSD screen, a time measurement circuit 207, an information extraction circuit 208 for extracting specified information on a memory, and an OSD
A data generation circuit 209.

The program information storage means for storing channel information and information on a program schedule includes a memory 20.
4, the remote control 113 corresponds to the time specifying means for specifying the time, the time measuring circuit 207 corresponds to the time measuring means for measuring a fixed time, and the program information extracting means extracted from the program information storing means. Means include an information extraction circuit 208
And the screen generating means for generating the display screen includes an OS
The D data generation circuit 209 corresponds thereto, and the time measurement reset means for resetting the time measurement means includes the information selection circuit 20.
6 corresponds.

In the present invention, the time designated by the time designation means means, in addition to the time, a time zone as shown in FIG. 5, or a month, a day, a day of the week, or, for example, two hours before or after. It means a target that can be specified with respect to time, such as before or after a predetermined time has elapsed.

A signal input via a reception signal input terminal 101 is digitally demodulated by a demodulation circuit 102 and error-corrected by an error correction circuit 103.
Decrypts the code. The output signal of the encryption / decryption circuit 104 is input to the packet separation circuit 105. The packet separation circuit 105 identifies the input packet based on the control signal of the control circuit 112, and the specified compressed video data is
The specified compressed audio data to the video decoding circuit 108 is
Each is input to the audio decoding circuit 106. Then, each is decoded and output.

Similarly, additional information such as channel information and program schedule information is input to the control circuit 112 and analyzed. Then, a display screen is generated by the OSD signal processing circuit 111, combined with the video signal output by the video decoding circuit 108 by the mixing circuit 109, and
Is output to the television monitor via the.

The additional information such as channel information and program schedule information separated by the packet separation circuit 105 includes:
For example, information on the channel on which the broadcast is being carried out, program name, broadcast date and day of the program, start time and end time of the program, change information of the broadcast schedule of the program, billing information, program contents and performers, production data Etc. is included.

Next, the internal configuration and operation of the control circuit 112 for analyzing such channel information and additional information such as program schedule information will be described.

The additional information such as the channel information and the program schedule information separated by the packet separation circuit 105 shown in FIG. The information separating circuit 201 classifies the input channel information and the additional information such as the program schedule information on the basis of the packet identifier added to each packet. For example,
The packet including the key information to be given to the encryption / decryption circuit 104 is input to the encryption processing circuit 202, through which an encryption key is set in the encryption / decryption circuit 104 shown in FIG. 1 and the encryption is decrypted. The packet including the packet identifier information is input to the packet separation control circuit 203. The packet separation control circuit 203
A control signal for instructing separation of the packet specified in step 6 is generated, and the packet separation circuit 105 shown in FIG. 1 is controlled. Then, the packet including the channel information and the program schedule information is stored in the memory 204.

On the other hand, the remote control receiving terminal 113 shown in FIG.
Remote control signal input from the
At step 05, for example, it is detected that a numeric keypad, up / down / left / right buttons, etc. are pressed, and the information is transmitted to the information selection circuit 206. The information selection circuit 206 controls the OSD data generation circuit in response to a control signal from the remote control signal analysis circuit 205, and performs control such as moving a cursor on a display screen.

When the remote control key is pressed, the information selection circuit 206 outputs a time measurement start signal to the time measurement circuit 207. The time measurement circuit 207 receives the time measurement start signal, starts measuring time, and returns a time measurement end signal to the information selection circuit 206 when a preset time has elapsed. After confirming the reception of the time measurement end signal, the information selection circuit 206 stores the information of the designated time zone and channel to the information extraction circuit 208 in the memory 204.
Output a control signal to read from Information extraction circuit 2
08 receives the control signal and reads out information on the designated time zone and channel from the memory 204. The information read from the memory 204 is analyzed by the OSD data generation circuit 209 to generate OSD display screen data. OS
A display screen is generated from the data generated by the D data generation circuit 209 by the OSD signal processing circuit 111 illustrated in FIG.
The mixed signal is combined with the video signal output from the video decoding circuit 108 by the mixing circuit 109 and output to the television monitor via the video signal output terminal 110.

In the conventional device without the time measurement circuit 207, the information selection circuit 206 outputs the first time measurement start signal and then returns the corresponding first time measurement end signal. When the next remote control key is pressed, a second time measurement start signal is issued and the first time measurement end signal is ignored. Similarly, when the next remote control key is pressed before the second time measurement end signal is returned, a third time measurement start signal is issued, and the third time measurement end signal is ignored. As described above, when the remote control key is continuously pressed, the information selection circuit 206 outputs the control signal to the information extraction circuit 208 until the time measurement end signal corresponding to the last pressed key is returned. Wait for output.

As described above, by one remote control input,
Since the information extracting circuit 208 performs an operation of reading the information of the designated time zone or channel from the memory 204, when the remote controller is continuously pressed, an operation of reading the information of the number of times of pressing from the memory 204 is performed. And the final screen display will be slow.

In the present embodiment, the time measuring circuit 207 and the time measuring reset means for resetting the time measuring means when the time is specified by the next time specifying means before the elapse of the predetermined time measured by the time measuring means. Therefore, when the remote control key is continuously pressed, the information selection circuit 206 outputs a control signal to the information extraction circuit 208 until the time measurement end signal corresponding to the last pressed key is returned. By waiting for the output, the operation of reading the information of the number of times of pressing from the memory 204 can be avoided, and as a result, the OSD screen is displayed quickly. That is, the target information can be extracted and the screen can be quickly displayed, and the operability of the receiving terminal can be improved.

In this embodiment, the control circuit 11 shown in FIG.
2 is realized by a circuit as shown in FIG.
12 may be constituted by a microcomputer having a built-in software program, and the mechanism shown in FIG. 2 may be realized by the software program.

Next, an embodiment in which the invention according to claim 2 is applied to a multi-channel digital satellite broadcast receiving apparatus as in the invention according to claim 1 will be described with reference to FIGS. . Since the broadcast receiving apparatus 1 is the same as that in the first aspect of the invention, description thereof will be omitted.

Referring to FIG. 3, control circuit 112 shown in FIG.
Is an information separating circuit 201 for separating channel information and additional information such as program schedule information input from the packet separating circuit 105 according to the purpose, and a cipher for processing key information given to the encryption / decryption circuit 104 shown in FIG. A processing circuit 202 and a packet separation control circuit 203 for specifying a packet to be separated by the packet separation circuit 105 shown in FIG.
A memory 204 for storing channel information and program schedule information; and a remote control signal analyzing circuit 20 for analyzing a signal input from the remote control receiving terminal 113 shown in FIG.
5, an information selection circuit 206 for selecting information displayed on the OSD screen, and an information extraction reset circuit 21 for resetting the information extraction circuit 208 in accordance with an instruction from the information selection circuit 206
1, an information extraction circuit 208 for extracting specified information on the memory, and an OSD data generation circuit 209.

The program information storage means for storing information on channel information and program schedule includes a memory 204
The remote control 113 corresponds to the time specifying means for specifying the time, and the information extracting circuit 208 corresponds to the program information extracting means for extracting from the program information storing means. Corresponds to the OSD data generation circuit 209, and the program information extraction reset means for stopping and resetting the information extraction includes the information extraction reset circuit 2
11 corresponds to this. In the invention according to claim 2, the time designated by the time designation means is the same as the invention according to claim 1.

Next, the internal configuration and operation of the control circuit 112 for analyzing the additional information such as the channel information and the program schedule information will be described.

The additional information such as the channel information and the program schedule information separated by the packet separation circuit 105 shown in FIG. The information separating circuit 201 classifies the input channel information and the additional information such as the program schedule information on the basis of the packet identifier added to each packet. For example,
The packet including the key information to be given to the encryption / decryption circuit 104 is input to the encryption processing circuit 202, through which an encryption key is set in the encryption / decryption circuit 104 shown in FIG. 1 and the encryption is decrypted. The packet including the packet identifier information is input to the packet separation control circuit 203. The packet separation control circuit 203
A control signal for instructing separation of the packet specified in step 6 is generated, and the packet separation circuit 105 shown in FIG. 1 is controlled. Then, the packet including the channel information and the program schedule information is stored in the memory 204.

On the other hand, the remote control receiving terminal 113 shown in FIG.
Remote control signal input from the
At step 05, for example, it is detected that a numeric keypad, up / down / left / right buttons, etc. are pressed, and the information is transmitted to the information selection circuit 206. The information selection circuit 206 controls the OSD data generation circuit in response to a control signal from the remote control signal analysis circuit 205, and performs control such as moving a cursor on a display screen.

When the remote control key is pressed, the information selection circuit 206 outputs an information extraction reset signal to the information extraction reset circuit 211. The information extraction reset circuit 211 receives the information extraction reset signal and outputs an information extraction stop signal and an information extraction start signal to the information extraction circuit 208. Upon receiving the information extraction stop signal, the information extraction circuit 208 stops the information extraction process if it has been performed, and ignores it if it has not been. Next, in response to the information extraction start signal, the latest information on the designated time and channel is read from the memory 204. The information read from the memory 204 is analyzed by the OSD data generation circuit 209 to generate OSD display screen data. The data generated by the OSD data generation circuit 209 corresponds to the OSD data shown in FIG.
A display screen is generated by the SD signal processing circuit 111, combined with the video signal output by the video decoding circuit 108 by the mixing circuit 109, and output to the television monitor via the video signal output terminal 110.

According to the first aspect of the present invention, a time measuring circuit
7 and a time measurement resetting means for resetting the time measuring means when the time is designated by the next time designating means before the elapse of the fixed time measured by the time measuring means. If the key is pressed continuously, it waits for the control signal to be output to the information extraction circuit 208 until the time measurement end signal corresponding to the key pressed last is returned. The operation of reading the information for the number of times from the memory 204 is avoided, and as a result, the OSD screen is displayed quickly.
11, the information selection circuit 206 does not execute information extraction processing other than the information extraction processing corresponding to the last pressed key when the remote control key is continuously pressed. The operation of reading the information from the memory 204 is avoided, and as a result, the OSD screen is displayed quickly, so that the target information can be extracted and the screen can be displayed quickly, and the operability of the receiving terminal can be improved. Can be improved.

In the inventions according to the first and second aspects, the time designation means may be displayed so as to scroll the time zone shown in FIG. 5, but instead of the time, a channel is designated. You can also search by scrolling channels, and quickly display information about the desired channel. This is the invention according to claims 3 and 4.

According to a fourth aspect of the present invention, instead of the time measuring means and the time measurement resetting means in the third aspect of the present invention, when a program is extracted by the program information extracting means, a channel is designated by the next channel designating means. By using the program information extraction resetting means for stopping and resetting the information extraction when specified, the extraction of information based on the specification of the previous channel is stopped when the channel is specified by the latest channel specifying means, After resetting, channel information corresponding to the channel designated by the latest channel designation means and information on the program schedule are extracted from the program information storage means, and a display screen is generated.

If the latest time or the time or channel specified by the channel specifying means is the same as the previous time or channel,
It is also possible to employ means for invalidating the latest time or channel designation.

In this embodiment, a multi-channel digital satellite broadcast receiving apparatus has been described as an example. However, an ISDN (Integrated
Service Digital Network, comprehensive digital service network)
It can also be realized by a digital cable television system using a digital line, a coaxial cable or an optical cable.

[0040]

According to the present invention, when a digital broadcast is received, a program table or the like can be displayed at a high speed even when the remote controller is continuously pressed, and the operability of the receiving terminal is improved. Can be.

[Brief description of the drawings]

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

FIG. 2 is a block diagram showing an internal configuration of a control circuit 112 in the broadcast receiving apparatus according to the first embodiment.

FIG. 3 is a block diagram showing an internal configuration of a control circuit 112 in the broadcast receiving apparatus according to the second embodiment.

FIG. 4 is an explanatory diagram illustrating an example of a remote controller.

FIG. 5 is an explanatory diagram of a configuration of an electronic program guide.

[Explanation of symbols]

 REFERENCE SIGNS LIST 1 broadcast receiving apparatus 101 reception signal input terminal 102 demodulation circuit 103 error correction circuit 104 encryption / decryption circuit 105 packet separation circuit 106 audio decoding circuit 107 audio signal output terminal 108 video decoding circuit 109 mixing circuit, 110 video signal output terminal 111 OSD signal processing Circuit 112 Control circuit 113 Remote control receiving unit 201 Information separation circuit 204 Memory 205 Remote control signal analysis circuit 206 Information selection circuit 207 Time measurement circuit 208 Information extraction circuit 209 OSD data generation circuit 211 Information extraction reset circuit

 ──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Satoshi Iimuro 292 Yoshida-cho, Totsuka-ku, Yokohama-shi, Kanagawa Prefecture Inside the multimedia system development headquarters of Hitachi, Ltd. 292 Hitachi, Ltd. Multimedia System Development Division, Hitachi, Ltd. (72) Inventor Shigeru Yoneda 292 Yoshida-cho, Totsuka-ku, Yokohama-shi, Kanagawa Prefecture, Japan Multimedia System Development Division, Hitachi, Ltd. (72) Inventor Satoru Mio Kanagawa 292 Yoshida-cho, Totsuka-ku, Yokohama-shi, Japan Inside the multimedia system development headquarters of Hitachi, Ltd.

Claims (4)

[Claims] 1. A broadcast receiving apparatus for acquiring at least channel information and information on a program schedule from a received signal and displaying a schedule of a channel, a program information storage means for storing channel information and information on a program schedule, A time designating means for designating a time; a time measuring means for measuring a fixed time after designating the time by the time designating means; and a time designated by the time designating means after a lapse of the fixed time measured by the time measuring means. Program information extracting means for extracting corresponding channel information and information on the program schedule from the program information storage means; screen generating means for generating a display screen based on the channel information and the program schedule information extracted by the program information extracting means; Before the elapse of a certain time measured by the time measurement means, A broadcast receiving apparatus comprising: a time measurement reset unit that resets a time measurement unit when a time is specified by a step. 2. A broadcast receiving apparatus for acquiring at least channel information and information on a program schedule from a received signal and displaying a channel schedule, wherein: a program information storage means for storing channel information and information on a program schedule; Time designation means for designating a time; program information extraction means for extracting channel information corresponding to the time designated by the time designation means and information on the program schedule from the program information storage means; and channels for extraction by the program information extraction means. Screen generation means for generating a display screen based on the information and the information on the program schedule, and when the time is specified by the next time specification means during the extraction by the program information extraction means, the extraction of information is stopped and reset. Program information extraction resetting means Transmitting and receiving device. 3. A broadcast receiving apparatus for acquiring at least channel information and information on a program schedule from a received signal and displaying a channel schedule, a program information storage means for storing channel information and information on a program schedule, Channel designation means for designating a channel, time designation means for measuring a certain time after designating a channel with the channel designation means, and a channel designated by the channel designation means after a lapse of a certain time measured by the time measurement means. Program information extracting means for extracting corresponding channel information and information on the program schedule from the program information storage means; screen generating means for generating a display screen based on the channel information and the program schedule information extracted by the program information extracting means; Time measurement means And a time measurement reset means for resetting the time measurement means when a time is designated by the next time designation means before a predetermined time elapses. 4. A broadcast receiving apparatus for acquiring at least channel information and information on a program schedule from a received signal and displaying a channel schedule, a program information storage means for storing channel information and information on a program schedule, Channel designating means for designating a channel; program information extracting means for extracting channel information corresponding to the channel designated by the channel designating means and information on the program schedule from the program information storage means; and channels for extracting by the program information extracting means. Screen generation means for generating a display screen based on the information and the information on the program schedule. If the channel is specified by the next channel specification means while extracting by the program information extraction means, the extraction of information is stopped and reset. Program information extraction Broadcast receiving apparatus characterized by having a Tsu bets means.