JP2002236479A - Integrated circuit - Google Patents

Abstract

PROBLEM TO BE SOLVED: To perform simultaneous display of a plurality of pictures easily, to reduce the load of a control part (a CPU(central processing unit)) and to save the working space of a memory. SOLUTION: An integrated circuit 120 is provided with a function for processing the reproduced data (stored information) of a DVD(digital video disk) 101 and a function for processing Internet information (external information) which is obtained via a modem 114. At the time of performing the simultaneous processing mode of the DVD and the Internet, video data outputted from a video processor 129 are used for performing the simultaneous display of two pictures. In the processor 129, video data for master screen are obtained by decoding the reproduce video data of the DVD and the Internet information excepting a part for slave screen in them, and also the video data for slave screen are obtained by performing direct compression processing by decoding only necessary data (information) at the time of decoding the reproduced video data of the DVD and the Internet information. Video data for performing the simultaneous display of the two pictures are generated by synthesizing these video data on a memory.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to a plurality of information processing units, for example, a processing unit for information (accumulated information) reproduced from a disk-shaped recording medium, and information (external information) obtained through a communication line connected to the Internet. The present invention relates to an integrated circuit having a processing unit. Specifically, a plurality of image signal portions respectively corresponding to a plurality of images to be displayed simultaneously are obtained by decoding only information corresponding to the plurality of image signal portions, and the plurality of image signal portions are synthesized to output an image signal. , The simultaneous display of a plurality of images can be easily performed, and the load on the control unit can be reduced.
Further, the present invention relates to an integrated circuit which can save a work area of a memory.

[0002]

2. Description of the Related Art In recent years, DVD (Digital Versatile Disc)
DVD players that handle DVDs are becoming widespread. Video data is stored on a DVD in MPEG2 (Moving Picture Expert).
s Group 2) and are compressed and stored, and audio data is compressed and stored using AC3 and MPEG2 audio. Therefore, the DVD player can reproduce high-quality images and sounds from the DVD for a long time.

[0003]

It has been considered to add a function of processing information obtained by a communication line connected to the Internet to such a DVD player. Thereby, the DVD player can process various information obtained from the Internet and display it on the monitor.
It seems that DVD players will be more convenient.

An object of the present invention is to provide a plurality of information processing units, for example, a processing unit for information (accumulated information) reproduced from a disk-shaped recording medium and an information (external information) acquired by a communication line connected to the Internet. An object of the present invention is to provide an integrated circuit which has a processing unit, can easily display a plurality of images simultaneously, can reduce the load on a control unit, and can save a work area of a memory.

[0005]

An integrated circuit according to the present invention comprises a plurality of information input units for inputting information, and a plurality of information input by the plurality of information input units, respectively, to decode an image signal. A plurality of information processing units to obtain, and an image signal output unit that outputs an output image signal related to a part or all of the plurality of image signals obtained by the plurality of information processing units,
A control unit that controls operations of the plurality of information input units, the plurality of information processing units, and the image signal output unit. Then, the control unit, when output image signals related to the plurality of image signals are output from the image signal output unit, outputs a plurality of image signal portions respectively corresponding to the plurality of images simultaneously displayed by the output image signals. Controls a plurality of information processing units so as to decode and obtain only information corresponding to the image signal portions, and outputs an output image signal by combining a plurality of image signal portions obtained by the plurality of information processing units. The image signal output unit is controlled so as to perform the operation.

Further, the integrated circuit according to the present invention has a first information input unit for inputting stored information, a second information input unit for inputting external information, and a storage input by the first information input unit. A first information processing unit that decodes information to obtain a first image signal, and a second information processing unit that decodes external information input by a second information input unit to obtain a second image signal ,
A first image signal and a second image signal obtained by a first information processing unit;
An image signal output unit for outputting an output image signal related to one or both of the second image signals obtained by the information processing unit, a first information input unit, a second information input unit, and a first information processing unit And a control unit for controlling the operations of the second information processing unit and the image signal output unit. The control unit is configured to output an output image signal related to both the first image signal and the second image signal from the image signal output unit.
The first information processing unit and the second information processing unit are configured to obtain two image signal portions respectively corresponding to the two images displayed simultaneously by the output image signal by decoding only the information corresponding to the two image signal portions. And controlling the image signal output unit to output an output image signal by combining two image signal portions obtained by the first information processing unit and the second information processing unit. Things.

In the present invention, a plurality of information processing units,
For example, it includes a first information processing section for decoding stored information and a second information processing section for decoding external information. The stored information is information reproduced from a disk-shaped recording medium such as a DVD. The external information is, for example, information obtained through a communication line connected to the Internet.

[0008] Output image signals relating to a part or all of the plurality of image signals obtained by the plurality of information processing units are output from the image signal output unit. When the output image signal relates to a plurality of image signals, the output image signal displays a plurality of images simultaneously.

The operations of the plurality of information input units, the plurality of information processing units, and the image signal output unit are controlled by the control unit.
The control unit, when output image signals relating to the plurality of image signals are output from the image signal output unit, converts the plurality of image signal portions respectively corresponding to the plurality of images displayed simultaneously by the output image signals into the plurality of images. A plurality of information processing units are controlled such that only information corresponding to the signal portions is obtained by decoding, and a plurality of image signal portions obtained by the plurality of information processing units are combined to output an output image signal. To control the image signal output unit.

As described above, a plurality of information processing units and an image signal output unit are provided, so that a plurality of image signal portions obtained by the plurality of information processing units are combined to obtain an output image signal within the same integrated circuit. This makes it possible to easily display a plurality of images simultaneously. Also, the plurality of information processing units decode only information corresponding to the plurality of image signal portions, respectively, so that the load on the control unit can be reduced and the work area of the memory can be saved.

[0011]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 shows a configuration of a DVD player 100 having an Internet function. The DVD player 100 includes a spindle motor 102 for rotationally driving the DVD 101, an optical pickup 103 including a semiconductor laser, an objective lens, a photodetector, and the like.
And a feed motor 104 for moving in the radial direction (radial direction). In this case, a laser beam from a semiconductor laser constituting the optical pickup 103 is applied to the recording surface of the DVD 101, and the reflected light is applied to a plurality of photodetectors (four-division photodetectors) constituting the optical pickup 103.

The DVD player 100 has a CPU as a controller for controlling the operation on the front end side.
(Central Processing Unit) 105 and a servo control circuit 106. The servo control circuit 106 controls tracking and focus in the optical pickup 103 and controls the operation of the feed motor 104. Further, the rotation of the spindle motor 102 is controlled by the servo control circuit 106, and when the DVD 101 is reproduced, the DVD 101 is CLV (Constant Linear Linear).
Velocity).

The DVD player 100 arithmetically amplifies the output signals of the plurality of photodetectors of the optical pickup 103 to create a reproduction RF signal, a focus error signal by an astigmatism method, and a tracking error signal by a phase difference method. And an RF amplifier unit 107 for performing the operation. The focus error signal and the tracking error signal generated by the RF amplifier unit 107 are supplied to the servo control circuit 106, and the servo control circuit 106 uses these error signals to perform tracking and focusing in the optical pickup 103 as described above. Control. Note that this RF
The amplifier unit 107 also has a power control function of the semiconductor laser constituting the optical pickup 103.

The DVD player 100 performs a series of analog signal processing such as binarization of the reproduced RF signal generated by the RF amplifier unit 107, and subsequent generation of synchronous data by a PLL (Phase-Locked Loop). It has a read channel section 108. Note that the read channel unit 108 also has functions such as generation of a CLV control signal. The CLV control signal is supplied to the servo control circuit 106, and the servo control circuit 106 uses the CLV control signal to
To control the rotation of

The DVD player 100 includes a demodulation / ECC unit 109 for demodulating the synchronous data (8/16 modulated data) generated by the read channel unit 108 and thereafter performing processing such as error correction, and a RAM 110 as a buffer memory. VBR (V) which outputs the output data of the demodulation / ECC unit 109 at the data rate required by the subsequent processing circuit.
ariable Bit Rate) control unit 111. This VBR control unit 111 constitutes a front end.

The DVD player 100 has an integrated circuit 120 having a DVD processing function and an Internet processing function. Here, the DVD processing function is a DV processing function.
This is a function for processing the reproduction data of D101. On the other hand, the Internet processing function is a function for processing information (Internet information) obtained through a communication line connected to the Internet, which will be described later.

The configuration of the integrated circuit 120 will be described. This integrated circuit 120 has a CPU 121 that controls the operation of each circuit in the integrated circuit. The CPU 121 is connected to the internal bus 122 and communicably connected to the CPU 105 on the front end side described above.

The integrated circuit 120 includes the VBR control unit 1
11, a descrambler 123 for descrambling the copy stream applied to the data stream output from the data stream 11, and video data, audio data, sub-picture data, etc., from the descrambled data stream by the descrambler 123. It has a demultiplexer 124 for separation.

Also, the integrated circuit 120 is a DVD
RO storing the operation program for processing the reproduction data of 101 and the operation program for processing the Internet information (decoding processing, browsing processing, etc.)
ROM for externally attaching M (Read Only Memory) 112
It has an interface 125 and a RAM interface 126 for storing data generated under the control of the CPU 121 and for externally attaching a RAM (Random Access Memory) 113 used as a working area. The interfaces 125 and 126 are respectively connected to the internal bus 122.

The integrated circuit 120 includes a modem interface 127 for externally connecting a modem 114 for connecting to the Internet via a telephone line, a display unit 141 including a liquid crystal display element, an FL display tube, and the like. CPU interface 128 for connecting panel unit 140 including operation key unit 142 on which a plurality of operation keys are arranged
And The interfaces 127 and 128 are connected to the internal bus 122, respectively. Here, the panel unit 140 is provided with a CPU 143, and the display unit 1
41 and the operation key unit 142 are connected to the CPU 143, respectively. The CPU 143 is connected to the CPU interface 128 of the integrated circuit 120.

The integrated circuit 120 performs decompression processing on compressed video data (MPEG2 video data) obtained from the demultiplexer 124 in the DVD processing mode, or performs a predetermined Web site from the Internet information in the Internet processing mode. Has a video processor 129 that performs processing for obtaining video data for displaying a Web page of the same. This video processor 1
Reference numeral 29 is connected to the internal bus 122. It should be noted that part or all of the processing of processing the Internet information to obtain video data for displaying a Web page of a predetermined Web site may be performed by the CPU 121.

In the DVD processing mode, the integrated circuit 120 processes the sub-picture data obtained from the demultiplexer 124 to obtain display data for displaying subtitles and the like, and the above-described video. A synthesizer 131 for synthesizing video data output from the processor 129 with display data output from the sub-picture decoder 130, and using the video data output from the synthesizer 131 to generate video data of, for example, the NTSC system. After that, a video encoder / DAC 132 which converts the video data into an analog signal to obtain a video signal SV and outputs the video signal SV to an external video output terminal 115 is provided. Video processor 129
And the sub-picture decoder 130 are connected to the internal bus 122, respectively.

The integrated circuit 120 has an OSD (On Screen
en Display) circuit 133. The display data output from the OSD circuit 133 is a TV encoder / D
It is supplied to the AC 132 and is combined with the video data from the combiner 131. Thus, OSD display based on the display data output from the OSD circuit 133 is enabled. The OSD circuit 133 is connected to the internal bus 122, and its operation is controlled by the CPU 121.

The integrated circuit 120 performs decompression processing or the like on audio data (AC-3 data, MPEG2 audio data, etc.) obtained from the demultiplexer 124 in the DVD processing mode. Process the information to determine W
Obtains audio data related to a web page of an website, and converts the audio data to an external D / A converter 1
16 has an audio processor 134. Note that a part or all of the processing for obtaining the audio data related to the Internet information may be performed by the CPU 121. The analog audio signal SA output from the D / A converter 116 is supplied to the audio output terminal 11
7 is output.

Although not described above, the operation key section 142 of the panel section 140 has a simultaneous display of two images based on video data output from the video processor 129 in a simultaneous processing mode in which DVD processing and Internet processing are simultaneously performed. A switching key 142a for switching the mode is provided. By operating the switching key 142a, the DVD playback screen is set as the main screen, and the browsing screen of the Internet predetermined Web site is set as the sub screen, or the browsing screen of the Internet predetermined Web site is set as the main screen, and the DVD is displayed. The playback screen can be switched to a sub-screen.

Although not described above, the operation key unit 142 of the panel unit 140 stores audio data output from the audio processor 134 in the simultaneous processing mode in which DVD processing and Internet processing are simultaneously performed.
A switching key 142b for switching to audio data for VD processing or audio data for Internet processing is provided. By operating the switching key 142b, it is possible to switch to an Internet audio output state or a DVD audio output state.

The operation of the DVD player 100 shown in FIG. 1 will be described. When the user operates the operation key section 142, D
The case where the VD reproduction is instructed will be described. In that case,
The reproduction instruction signal is transmitted from the CPU 143 of the panel unit 140 to the CPU
Since the data is sent to the CPU 121 of the integrated circuit 120 through the interface 128 and the internal bus 122, the integrated circuit 12
0 is the DVD processing mode.

The CPU 121 of the integrated circuit 120
Instructs the CPU 105 on the front end side to reproduce. Thus, the rotation of the spindle motor 102 is started under the control of the servo control circuit 106, and the DVD 10
1 is rotationally driven by the CLV, and the reproduction is started.

In the playback state of the DVD 101, the RF amplifier unit 1
07 from the read channel unit 10
The read channel unit 108 performs binarization slicing, generation of synchronous data by PLL, and the like. The synchronization data output from the read channel unit 108 is supplied to a demodulation / ECC unit 109, and the demodulation / ECC
Demodulation processing and error correction processing are performed in CC section 109. Then, the data stream from the demodulation / ECC unit 109 is supplied to the descrambler 123 of the integrated circuit 120 at a predetermined data rate through the VBR control unit 111.

The descrambler 123 descrambles the data stream, and supplies the descrambled data stream to the demultiplexer 124. In the demultiplexer 124, video data, audio data, sub-picture data, and the like are separated from the data stream.

Then, the video data (MPEG2 video data) separated by the demultiplexer 124 is supplied to a video processor 129 and subjected to a decompression process. The video data output from the video processor 129 is transmitted to the TV encoder / DA via the synthesizer 131.
The video signal SV is supplied to the video output terminal 115, and the video output terminal 115 outputs an NTSC video signal SV related to a playback signal of the DVD 101, for example. By supplying this video signal SV to a monitor (not shown), a reproduced image IM1 is displayed on the entire surface of the monitor as shown in FIG. 2A.

The sub-picture data separated by the demultiplexer 124 is supplied to a sub-picture decoder 130. Then, a decoding process is performed by the sub-picture decoder 130 based on the operation of the operation key unit 142 by the user, and display data for displaying subtitles and the like is created. Since this display data is combined with the video data from the video processor 129 by the combiner 131,
Subtitles and the like are superimposed on the reproduced image and displayed.

The audio data (such as AC-3 data) separated by the demultiplexer 124 is supplied to an audio processor 134 for processing. Then, the audio data output from the audio processor 134 is supplied to the external D / A converter 116 to be converted into an analog audio signal SA, and the audio signal SA is output to the audio output terminal 117. This audio signal SA
Is amplified and supplied to a speaker (not shown) to output a reproduced sound (DVD sound).

Next, a case where an Internet connection is instructed by a user's operation of the operation key section 142 will be described. In this case, the connection instruction signal is
U143, CPU interface 128, internal bus 12
2 to the CPU 121 of the integrated circuit 120, the integrated circuit 120 enters the Internet processing mode.

The CPU 121 of the integrated circuit 120
Starts a browser and dials up from the modem 114 to provide an Internet connection service (ISP: Internet Service Provider).
der). Then, the Web of the URL (Uniform Resource Locator) set on the Internet
Access the site. As a result, the information of the Web page constituting the Web site is downloaded and supplied from the modem 114 to the CPU 121.

The downloaded information is transmitted to the CPU 12
1 and the video processor 129 to obtain video data for displaying a Web page of a predetermined Web site. This video data is output from the video processor 129, and is output to the TV encoder / D via the synthesizer 131.
The video signal SV is supplied to the AC 132, and the video output terminal 115 outputs an NTSC video signal SV related to a Web page of a predetermined Web site. By supplying this video signal SV to a monitor (not shown), an image IM2 related to a Web page of a predetermined Web site is displayed on the entire surface of the monitor as shown in FIG. 2B.

If the downloaded information includes audio information, the CPU 121 or the audio processor 1
In step 34, audio data relating to a Web page of a predetermined Web site is obtained. The audio data is output from the audio processor 134, converted into an analog audio signal SA by the D / A converter 116, and output to the audio output terminal 117. This audio signal SA
Is amplified and supplied to a speaker (not shown), so that a sound (Internet sound) related to a Web page of a predetermined Web site is output.

Next, while the integrated circuit 120 is in the DVD processing mode, the operation key section 142 of the panel section 140 is further operated.
When the Internet connection is instructed by the operation of
The case where DVD playback is instructed by the operation key unit 142 of the panel unit 140 while the integrated circuit 120 is in the Internet processing mode will be described.

In these cases, the integrated circuit 120 is in the simultaneous processing mode in which the operation in the DVD processing mode and the operation in the Internet processing mode are performed in parallel.
However, in this simultaneous processing mode, the video data output from the video processor 129 is for simultaneously displaying the reproduced image IM1 of the DVD and the image IM2 related to the Web page of the predetermined Web site on the Internet. In this case, one of the images IM1 and IM2 is displayed on the parent screen, and the other is displayed on the child screen.

When the integrated circuit 120 is in the DVD processing mode and the Internet connection is instructed by operating the operation key section 142 of the panel section 140, first, as shown in FIG. And the image IM2 is displayed on the child screen. On the other hand, when the integrated circuit 120 is in the Internet processing mode,
In the case where DVD playback is instructed by 2, first, for example, as shown in FIG. 2D, the image IM2 is displayed on the main screen,
The image IM1 is displayed on the child screen.

In this embodiment, when the user operates the switching key 142a of the operation key section 142 in the state where the images IM1 and IM2 are simultaneously displayed, the display mode shown in FIG. The display mode shown in 2D can be switched. Thus, the two images IM1,
In order to obtain video data for simultaneously displaying IM2, the video processor 129 performs the following image processing method.

That is, the video data for obtaining the image to be displayed on the main screen is reproduced video data (MP
EG data), Internet information (HTML data as character information, GIF data as image information, JP
(Eg, EG data) except for the child screen portion. Also, video data for obtaining a compressed image to be displayed on a small screen is decoded from DVD playback video data (MPEG data) and Internet information (HTML data as character information, GIF data as image information, JPEG data, etc.). In this case, only data (information) necessary at the time of decoding is decoded to directly obtain the data.

Here, since the MPEG data is encoded in units of macroblocks or slices, only the video data for obtaining the image IM1 to be displayed on the main screen can be obtained by selectively decoding the macroblocks and slices. Can be obtained efficiently, and the video data of the image (compressed image) IM1 displayed on the small screen can be obtained efficiently. As described above, by decoding only a necessary portion of the MPEG data, the load on the CPU 121 can be reduced.

The HTML data as character information is composed of font data indicating the contents and display position data, as well as GIF data as image information and JP data.
Since EG data and the like are encoded in block units,
By selectively decoding, the image I displayed on the main screen
It is possible to efficiently obtain only video data for obtaining M2, adjust the font size and display interval at the time of decoding, and selectively decode image blocks to display images (compressed images) ) Video data of IM2 can be obtained.

Further, in this image processing method, the video data for the parent screen and the video data for the child screen obtained as described above are combined in a memory to simultaneously display two images IM1 and IM2. To obtain video data for

In this image processing method, video data for the main screen and video data for the sub-screen are obtained, and these video data are synthesized on a memory to produce two images IM1, IM1.
The video data for displaying the video data 2 at the same time is obtained. The decoding process and the compression process for obtaining each video data and the process of synthesizing the video data are all performed in a single integrated circuit 120. Yes, the video data combining process can be easily performed.

In this image processing method, the video data for the main screen is obtained by decoding the reproduced video data of the DVD and the Internet information except for the sub-screen portion, and the video data for the sub-screen is obtained from the DVD. This is obtained by directly performing a compression process when decoding reproduced video data or Internet information, so that the load on the CPU 121 can be reduced and a work area of a memory (RAM) can be saved.

The switching process of the screen display mode will be described with reference to the flowchart of FIG. First, in step ST1, it is determined whether or not a predetermined Web site on the Internet is being browsed. If it is not in the browsing state of the predetermined Web site, it is determined in step ST2 whether or not the DVD is being reproduced. If the DVD is not being reproduced, the process returns to step ST1. On the other hand, when the DVD is being reproduced, the entire screen is set to the DVD reproduction screen in step ST3 (see FIG. 2A), and thereafter, the process returns to step ST1.

If it is determined in step ST1 that a predetermined Web site is being browsed, the process proceeds to step ST4 in which the DVD
Is being reproduced. If the DVD is not being reproduced, in step ST5, the entire screen is set as a browsing screen of a predetermined Web site on the Internet (see FIG. 2B), and then the process returns to step ST1.

If it is determined in step ST4 that the DVD is being reproduced, it is determined in step ST6 whether or not there is a screen switching operation using the switching key 142a. When there is no screen switching operation, in step ST7, the display mode of the screen is left as it is, and the process returns to step ST1.

If there is a screen switching operation in step ST6, it is determined in step ST8 whether the parent screen is a browsing screen of a predetermined Web site on the Internet or a DVD reproducing screen. The main screen is the predetermined Internet W
If it is the browsing screen of the website, step ST9
Then, the parent screen is set to the DVD playback screen, and the child screen is set to the browsing screen of a predetermined Web site on the Internet (see FIG. 2C), and thereafter, the process returns to step ST1. On the other hand, when the parent screen is a DVD playback screen, in step ST10,
The parent screen is a browsing screen of a predetermined Web site on the Internet, and the child screen is a DVD playback screen (see FIG. 2D).
Thereafter, the process returns to step ST1.

As described above, the predetermined Web of the Internet
While the site is being viewed and the DVD is being played, each time the switch key 142a is operated, the parent-child relationship between the browsing screen of the Internet predetermined Web site and the DVD playback screen is reversed. The user operates the switching key 142a.
, The display mode can be freely selected.

In the DVD player 100 shown in FIG. 1, in the above-described simultaneous processing mode, audio data output from the audio processor 134 is a DV signal.
It becomes audio data related to the D processing or audio data related to the Internet processing.

When the integrated circuit 120 is in the DVD processing mode and an Internet connection is instructed by operating the operation key section 142 of the panel section 140, first, for example, audio data relating to DVD processing is output. On the other hand, when the integrated circuit 120 is in the Internet processing mode,
When DVD playback is instructed by 42, first, for example, audio data relating to Internet processing is output.

In this embodiment, when the user operates the switching key 142b of the operation key section 142, the DV
It is possible to switch between a state where audio data relating to the D processing is output and a state where audio data relating to the Internet processing is output. As described above, in order to switch between two pieces of audio data, the audio processor 134 performs the following audio processing method.

That is, only the reproduced audio data corresponding to the audio data output from the audio processor 134 or the audio information related to the Web page of the predetermined Web site is decoded to obtain the output audio data. According to this audio processing method, it is not necessary to decode audio data (audio information) that does not correspond to the output audio data.
And the work area of the memory (RAM) can be saved.

The audio switching process will be described with reference to FIG. First, in step ST21, it is determined whether or not a predetermined Web site on the Internet is being browsed. If it is not in the browsing state of the predetermined Web site, it is determined in step ST22 whether or not the DVD is being reproduced. DV
If D is not being reproduced, the process returns to step ST21. On the other hand, if the DVD is being reproduced, the process proceeds to step ST23.
To set the DVD audio output state, and then to step ST
Return to 21.

If it is determined in step ST21 that a predetermined Web site is being browsed, in step ST24, D
It is determined whether or not VD is being reproduced. When the DVD is not being reproduced, the output state of the Internet audio is set in step ST25, and thereafter, the process returns to step ST21.

If it is determined in step ST24 that the DVD is being reproduced, then in step ST26 the switching key 142
It is determined whether there is a voice switching operation by b. If there is no voice switching operation, in step ST27, the voice output state is left as it is, and the process returns to step ST21.

If there is an audio switching operation in step ST26, it is determined in step ST28 whether DVD audio or Internet audio is being output. If the Internet audio is being output, in step ST23, the DVD audio is output, and the process returns to step ST21. On the other hand, if DVD audio is being output, the output state of Internet audio is set in step ST25, and thereafter, step ST25 is executed.
Return to 21.

As described above, the predetermined Web of the Internet
While the site is being browsed and the DVD is being played, each time the switch key 142b is operated, the output state changes to the Internet audio output state or the DVD audio output state. The user can operate the switching key 142b to freely select which audio output state to use.

As described above, in the present embodiment, the integrated circuit 120 has a DVD processing function and an Internet processing function, and is different from a case where each function is realized by a separate integrated circuit. Hardware resources such as CPU can be used effectively, circuit wiring can be simplified, circuit size can be reduced, power consumption can be reduced, and external circuits (RAM, ROM, monitor, speaker, etc.) can be shared during each processing. It becomes easy to use.

In the present embodiment, video data for the main screen and video data for the sub-screen are obtained, and these video data are synthesized on a memory to form two images IM.
1, IM2 to obtain video data for simultaneous display. Decoding processing and compression processing for obtaining each video data, and processing for synthesizing video data are also performed.
All of them are performed in a single integrated circuit 120, so that the video data can be easily synthesized.

In this embodiment, the video data for the main screen is obtained by decoding the video data for the main screen except for the sub-screen portion of the reproduced video data of the DVD and the Internet information, and the video data for the sub-screen is obtained by the DVD. The decoding is performed directly by decoding only the data (information) necessary for decoding the reproduced video data and the Internet information, thereby reducing the load on the CPU 121 and the work area of the memory (RAM). Can be saved.

In the present embodiment, in the simultaneous processing mode in which DVD processing and Internet processing are simultaneously performed, reproduced audio data corresponding to audio data output from the audio processor 134 or a Web page of a predetermined Web site is displayed. The output audio data is obtained by decoding only such audio information, so that the load on the CPU 121 can be reduced and the work area of the memory (RAM) can be saved.

In the above embodiment, the DVD
In the simultaneous processing mode in which the processing and the Internet processing are simultaneously performed, the reproduction image IM1 of the DVD and the predetermined We
Although the image IM2 related to the Web page of the b site is displayed in a parent-child relationship (see FIGS. 2C and 2D), these images IM1 and IM2 are displayed on a screen divided into right and left as shown in FIG. 5A. Alternatively, it is conceivable that the image is displayed on a vertically divided screen as shown in FIG. 5B, and both are displayed on the child screen as shown in FIG. 5C. Also in these cases, every time the switch key 142a is operated, the image IM1,
The display positional relationship of IM2 is reversed.

In the above embodiment, the integrated circuit 120 has been described as being capable of performing DVD processing and Internet processing at the same time. However, the present invention is also applicable to an integrated circuit 120 capable of simultaneously processing digital television broadcast signals and the like. The same can be applied.

In the above-described embodiment, the processing of the reproduction data of the DVD 101 is described as the processing of the stored information. However, the processing of the stored information may be the processing of the reproduction data from another recording medium. . Although the processing of information obtained from the Internet via the modem 114 has been described as processing of external information, the processing of external information may be processing of information obtained from other external sources.

In the above embodiment, the CPU 105 is provided on the front end side in addition to the CPU 121 in the integrated circuit 120.
You may make it implement | achieve only with PU.

[0070]

According to the present invention, a plurality of information processing units,
For example, it is provided with a storage information processing unit and an external information processing unit. Compared with a case where each processing unit is realized by a separate integrated circuit, hardware resources such as a CPU can be used more effectively, and circuit wiring can be reduced. It can be simplified, the circuit scale can be reduced, the power consumption can be reduced, and external circuits such as a RAM and a ROM can be commonly used for each processing.

According to the present invention, a plurality of information processing units and an image signal output unit are provided, and it is the same that a plurality of image signal portions obtained by the plurality of information processing units are combined to obtain an output image signal. This is performed in an integrated circuit, and simultaneous display of a plurality of images can be easily performed.

Further, according to the present invention, the plurality of information processing units decode only information corresponding to a plurality of image signal portions, respectively, so that the load on the control unit can be reduced.
Also, the working area of the memory can be saved.

[Brief description of the drawings]

FIG. 1 is a block diagram illustrating a configuration of a DVD player as an embodiment.

FIG. 2 is a diagram showing an image display mode of a monitor.

FIG. 3 is a flowchart for explaining a process of switching a display mode of a screen.

FIG. 4 is a flowchart illustrating a sound switching process.

FIG. 5 is a diagram showing another example of screen division when displaying two images.

[Explanation of symbols]

 Reference Signs List 100 DVD player 101 DVD 103 Optical pickup 105, 121, 143 CPU 106 Servo control circuit 107 RF amplifier unit 108 Read channel unit 109 Demodulation / ECC unit 111 VBR control unit 112 ROM 113 RAM 114 Modem 115 Video output terminal 117 Audio output terminal 120 Integrated circuit 122 Internal bus 123 Descrambler 124 Demultiplexer 128 CPU interface 129 Video processor 130 Sub-picture decoder 132 TV encoder / DAC 133 OSD circuit 134 Audio processor 140 Panel section 141 Display section 142 Operation key section 142a, 142b Switching key

──────────────────────────────────────────────────続 き Continued on the front page (51) Int.Cl. ⁷ Identification symbol FI Theme coat ゛ (Reference) // H04N 5/60 102 H04N 5/93 Z F term (Reference) 5C023 AA15 AA18 AA35 AA38 BA11 CA03 CA05 DA02 DA03 DA08 5C026 DA14 DA27 5C053 FA24 GA11 GB11 GB37 JA01 JA16 KA05 KA08 KA24 LA14 5C082 AA01 AA02 AA37 BA02 BA12 BA27 BA41 BB01 BB03 CA55 CA63 CA76 CB05 MM04 MM09

Claims (4)

[Claims] A plurality of information input units for respectively inputting information; a plurality of information processing units for respectively decoding the plurality of information input by the plurality of information input units to obtain an image signal; An image signal output unit that outputs an output image signal related to part or all of a plurality of image signals obtained by the information processing unit; and operations of the plurality of information input units, the plurality of information processing units, and the image signal output unit A control unit that controls a plurality of images simultaneously displayed by the output image signals when output image signals related to the plurality of image signals are output from the image signal output unit. A plurality of image signal portions, so that only the information corresponding to the plurality of image signal portions is obtained by decoding.
Controlling the plurality of information processing units, and controlling the image signal output unit to output the output image signal by combining the plurality of image signal portions obtained by the plurality of information processing units. Integrated circuit. 2. A first information input unit for inputting stored information, a second information input unit for inputting external information, and a first information input unit for decoding the stored information input by the first information input unit to decode the stored information. A first information processing unit that obtains one image signal; a second information processing unit that decodes the external information input by the second information input unit to obtain a second image signal; An image signal output unit that outputs an output image signal related to one or both of a first image signal obtained by the information processing unit and a second image signal obtained by the second information processing unit; A control unit that controls the operations of the information input unit, the second information input unit, the first information processing unit, the second information processing unit, and the image signal output unit. The first image signal and the second image from the image signal output unit; When output image signals relating to both of the signals are output, two image signal portions respectively corresponding to two images simultaneously displayed by the output image signal are decoded, and only information corresponding to the two image signal portions is decoded. Controls the first information processing unit and the second information processing unit, and obtains the two image signal portions obtained by the first information processing unit and the second information processing unit. And controlling the image signal output unit so as to output the output image signal by synthesizing the image signal. 3. One of two images simultaneously displayed by output image signals related to both the first image signal and the second image signal is displayed on the main screen in an uncompressed state, and the other is displayed on the main screen. 3. The integrated circuit according to claim 2, wherein is displayed on the child screen in a compressed state. 4. The image processing apparatus according to claim 2, wherein the first information processing section obtains the first image signal by performing a decompression process on a compressed image signal constituting the accumulated information. An integrated circuit as described.