JP2014131272A - Receiving device and information processing method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To excellently display a three-dimensional image.SOLUTION: A data processing section acquires right-eye image data and left-eye image data after three-dimensional image data is processed which includes the right-eye image data and the left-eye image data for displaying a three-dimensional image. A control section controls timings of the right-eye image data and the left-eye image data which are acquired by the data processing section so as to match the display timing of the three-dimensional image. A display section displays the image by the right-eye image data and the left-eye image data whose timings are adjusted.

Description

  The present invention relates to a receiving apparatus, and more particularly to a receiving apparatus that handles left-eye image data and right-bank image data for displaying a stereoscopic image.

  In recent years, for example, digital video signals, that is, uncompressed (DVD) (Digital Versatile Disc) recorders, set-top boxes, and other AV sources (Audio Visual source) from television receivers, projectors, and other displays. As a communication interface for transmitting a baseband video signal (image data) and a digital audio signal (audio data) accompanying the video signal at high speed, HDMI (High Definition Multimedia Interface) or the like is becoming widespread. For example, Non-Patent Document 1 describes details of the HDMI standard.

High-Definition Multimedia Interface Specification Version 1.3a, November 10 2006

  For example, stereoscopic image data including left-eye image data and right-eye image data for displaying a stereoscopic image is transmitted from an AV source to the display, and stereoscopic image display using binocular parallax is performed on the display. It is possible.

  Three-dimensional image display methods can be roughly classified into the following two types with respect to display timing. One is a method in which the left eye image and the right eye image are displayed at the same timing. This method includes an anaglyph method, a polarized glasses method, and a naked eye method. The other one is a method in which the left eye image and the right eye image are alternately displayed. This method includes a shutter glass method.

  In the anaglyph method, two colors (mainly red and blue) that are complementary colors are used to form a left-eye image and a right-eye image with binocular parallax, which are divided into left and right eyes for presentation. Glass to which a color filter having no common transmission wavelength range is added is used. In the polarized glasses method, two linearly polarized lights with orthogonal polarization planes are used to form a left-eye image and a right-eye image, and a polarizing filter is added to divide and present them to the left and right eyes. Glass is used.

  Further, in the naked eye method, a left-eye image and a right-eye image of a vertically striped divided image are alternately displayed on a display, and a parallax barrier and a lenticular are used to divide and present them in the left and right eyes. In the shutter glass method, a left eye image and a right eye image are alternately displayed at a double frame rate, for example, and a glass to which a liquid crystal shutter is added is used to present the left eye image and the left eye.

  Further, the left eye image data and the right eye image data can be roughly classified into the following two types with respect to photographing timing. One is that the left eye image data and the right eye image data are obtained by photographing the left eye image and the right eye image at the same timing. In this case, for example, the left eye image data and the right eye image data are obtained by capturing the left and right images at the same timing in synchronism with a two-lens camera.

  The other one is that the left eye image data and the right eye image data are obtained by alternately capturing the left eye image and the right eye image at the double frame rate. In this case, for example, the left-eye image data and the right-eye image data are obtained by alternately photographing at a double frame rate with a single-lens camera and using a liquid crystal shutter, a prism, and the like.

  As described above, stereoscopic image data including left-eye image data and right-eye image data for displaying a stereoscopic image from the AV source to the display is transmitted, and stereoscopic image display using binocular parallax is performed on the display. When the left eye image data and the right eye image data are captured at different timings from the display timing of the left eye image and the right eye image, the image quality is lowered with a moving image, and the viewer is fatigued. There are inconveniences such as increased feeling.

  Here, when the photographing timing and the display timing are different, there are the following two methods. One is a case where the left eye image data and the right eye image data are obtained by alternately photographing, and the left eye image and the right eye image are displayed at the same timing. The other one is obtained when the left eye image data and the right eye image data are obtained by photographing at the same timing, and the left eye image and the right eye image are alternately displayed.

  Note that the AV source described above may be a game machine. In the game machine, left-eye image data and right-eye image data for displaying a stereoscopic image as a game image are dynamically generated. As described above, the timing of the left eye image data and the right eye image data generated by the game machine (timing corresponding to the shooting timing) may be set so that the left eye image data and the right eye image data have the same timing. Alternatively, the left eye image data and the right eye image data can be alternately set to a double frame rate. Even when the timing of the left-eye image data and right-eye image data generated by the game machine is different from the display timing of the left-eye image and right-eye image on the display, the image quality of the moving image is reduced, and There are inconveniences such as an increased feeling of viewer fatigue.

  An object of the present invention is to display a stereoscopic image satisfactorily.

The concept of this invention is
A data processing unit that processes stereoscopic image data including left-eye image data and right-eye image data for displaying a stereoscopic image to obtain the left-eye image data and the right-eye image data;
A control unit for controlling the timing of the left eye image data and the right eye image data obtained by the data processing unit so as to match the display timing of the stereoscopic image;
The receiving apparatus includes a display unit that displays an image based on the left-eye image data whose timing is controlled by the control unit and the right-eye image data.

  In the present invention, the data processing unit processes the stereoscopic image data including the left eye image data and the right eye image data for displaying the stereoscopic image, thereby obtaining the left eye image data and the right eye image data. The control unit controls the timing of the left eye image data and the right eye image data obtained by the data processing unit so as to match the display timing of the stereoscopic image. Then, the display unit displays an image based on the left-eye image data and the right-eye image data adjusted in timing. Thereby, it becomes possible to display a stereoscopic image satisfactorily.

  According to this invention, a stereoscopic image can be displayed satisfactorily.

1 is a block diagram showing a configuration example of an AV system as a first embodiment of the present invention. It is a block diagram which shows the structural example of the disc player (source device) which comprises AV system. It is a block diagram which shows the structural example of the television receiver (sink apparatus) which comprises AV system. It is a block diagram which shows the structural example of an HDMI transmission part (HDMI source) and an HDMI receiving part (HDMI sink). It is a block diagram which shows the structural example of the HDMI transmitter which comprises an HDMI transmission part, and the HDMI receiver which comprises an HDMI receiving part. It is a figure which shows the example of a structure of TMDS transmission data (when the image data of horizontal x length is 1920 pixels x 1080 lines is transmitted). It is a figure which shows the pin arrangement (type A) of the HDMI terminal to which the HDMI cable of the source device and the sink device is connected. It is a figure which shows the image data (Image data of a 1920 * 1080p pixel format) of the left eye (L) and the right eye (R). 3D (stereoscopic) image data transmission method, (a) a method of sequentially switching left eye image data and right eye image data for each field, and (b) one line of left eye image data and the right eye A method of alternately transmitting one line of image data, (c) a method of transmitting pixel data of left-eye image data in the first half of the horizontal direction, and a method of transmitting pixel data of right-eye image data in the second half of the horizontal direction, It is a figure for demonstrating. It is a figure which shows the TMDS transmission data example in the system which switches and transmits left-eye image data and right-eye image data sequentially for every field. It is a figure which shows the example of TMDS transmission data in the system which transmits one line of left eye image data and one line of right eye image data alternately. It is a figure which shows the TMDS transmission data example in the system which transmits the pixel data of left eye image data in the first half of a horizontal direction, and transmits the pixel data of right eye image data in the second half of a horizontal direction. It is a figure which shows the structural example of E-EDID data. It is a figure which shows the example of a data structure of a Vendor Specific area | region. Timing correction performed in the video signal processing circuit in the first case in which the left eye image data and the right eye image data are obtained by alternately photographing and the left eye image and the right eye image are displayed at the same timing. It is a figure for demonstrating a process. Timing correction performed in the video signal processing circuit in the second case in which the left eye image data and the right eye image data are obtained by shooting at the same timing, and the left eye image and the right eye image are alternately displayed. It is a figure for demonstrating a process. It is a figure which shows the example of a data structure of an AVI InfoFrame packet. Timing correction performed in the 3D signal processing unit in the first case in which the left eye image data and the right eye image data are obtained by alternately photographing and the left eye image and the right eye image are displayed at the same timing. It is a figure for demonstrating a process. It is a block diagram which shows the structural example of the AV system as 2nd Embodiment of this invention. It is a block diagram which shows the structural example of the game machine (source device) which comprises AV system. It is a block diagram which shows the structural example of the AV system as the 3rd Embodiment of this invention. It is a block diagram which shows the structural example of AV amplifier (repeater apparatus) which comprises AV system.

Hereinafter, modes for carrying out the invention (hereinafter referred to as “embodiments”) will be described. The description will be given in the following order.
1. 1. First embodiment 2. Second embodiment 3. Third embodiment Modified example

<1. First Embodiment>
[Example of AV system configuration]
FIG. 1 shows a configuration example of an AV (Audio Visual) system 200 according to the first embodiment. The AV system 200 includes a disc player 210 as a source device and a television receiver 250 as a sink device.

  The disc player 210 and the television receiver 250 are connected via an HDMI cable 350. The disc player 210 is provided with an HDMI terminal 211 to which an HDMI transmission unit (HDMI TX) 212 is connected. The television receiver 250 is provided with an HDMI terminal 251 to which an HDMI receiving unit (HDMI RX) 252 is connected. One end of the HDMI cable 350 is connected to the HDMI terminal 211 of the disc player 210, and the other end of the HDMI cable 350 is connected to the HDMI terminal 251 of the television receiver 250.

  In the AV system 200 shown in FIG. 1, uncompressed image data (video signal) from the disc player 210 is transmitted to the television receiver 250 via the HDMI cable 350, and the television receiver 250 uses the image from the disc player 210. An image based on the data is displayed. Further, uncompressed audio data (audio signal) from the disc player 210 is transmitted to the television receiver 250 via the HDMI cable 350, and the audio based on the audio data from the disc player 210 is output from the television receiver 250. .

  When the image data sent from the disc player 210 to the television receiver 250 is stereoscopic image data (3D image data) including left-eye image data and right-eye image data for displaying a stereoscopic image, the television receiver 250 A stereoscopic image is displayed.

  Here, there are two types of shooting timings for the left eye image data and the right eye image data reproduced by the disc player 210: simultaneous and alternating. When the shooting timing is the same, the left-eye image data and the right-eye image data are obtained by, for example, shooting a left-eye image and a right-eye image at the same timing with a two-lens camera. Further, when the photographing timings are alternate, the left eye image data and the right eye image data are obtained, for example, by photographing a left eye image and a right eye image with a single camera at alternate timings.

  In addition, there are two types of display timings of the left eye image and the right eye image displayed on the television receiver 250: simultaneous and alternating. For example, when the stereoscopic image display method of the television receiver 250 is an anaglyph method, a polarized glasses method, a naked eye method, or the like, the left eye image and the right eye image are displayed simultaneously. For example, when the stereoscopic image display method of the television receiver 250 is the shutter glass method, the left eye image and the right eye image are alternately displayed.

  In the AV system 200 shown in FIG. 1, the shooting timing of the left eye image data and right eye image data reproduced by the disc player 210 is different from the display timing of the left eye image and right eye image displayed by the television receiver 250. In some cases, timing correction is performed. In this timing correction, the timing of the left eye image data and the right eye image data is matched with the display timing of the left eye image and the right eye image. This timing correction is performed by the disc player 210 or the television receiver 250.

  Here, when the photographing timing and the display timing are different, there are the following two methods. One is a case where the left eye image data and the right eye image data are obtained by alternately photographing, and the left eye image and the right eye image are displayed at the same timing. The other one is obtained when the left eye image data and the right eye image data are obtained by photographing at the same timing, and the left eye image and the right eye image are alternately displayed.

[Configuration example of disc player]
FIG. 2 shows a configuration example of the disc player 210. The disc player 210 includes an HDMI terminal 211, an HDMI transmission unit 212, a drive interface 213, and a BD / DVD drive 214. The disc player 210 includes a demultiplexer 215, an MPEG decoder 216, a video signal processing circuit 217, an audio decoder 218, and an audio signal processing circuit 219.

  The disc player 210 has an internal bus 220, a CPU 221, a flash ROM 222, and a DRAM 223. Further, the disc player 210 includes an Ethernet interface (Ethernet I / F) 224, a network terminal 225, a remote control receiving unit 226, and a remote control transmitter 227. “Ethernet” and “Ethernet” are registered trademarks. The CPU 221, flash ROM 222, DRAM 223, Ethernet interface 224, and drive interface 213 are connected to the internal bus 220.

  The CPU 221 controls the operation of each unit of the disc player 210. The flash ROM 222 stores control software and data. The DRAM 223 constitutes a work area for the CPU 221. The CPU 221 develops software and data read from the flash ROM 222 on the DRAM 223 to activate the software, and controls each part of the disc player 210. The remote control receiving unit 226 receives a remote control signal (remote control code) transmitted from the remote control transmitter 227 and supplies it to the CPU 221. The CPU 221 controls each part of the disc player 210 according to the remote control code.

  The BD / DVD drive 214 records content data on a BD or DVD (not shown) as a disk-shaped recording medium, or reproduces content data from the BD or DVD. The BD / DVD drive 214 is connected to the internal bus 220 via the drive interface 213.

  The demultiplexer 215 separates elementary streams such as video and audio from the reproduction data of the BD / DVD drive 214. The MPEG decoder 216 performs a decoding process on the video elementary stream separated by the demultiplexer 215 to obtain uncompressed image data.

  The video signal processing circuit 217 performs scaling processing (resolution conversion processing), graphics data superimposition processing, and the like on the image data obtained by the MPEG decoder 216 as necessary, and supplies the result to the HDMI transmission unit 212. . Further, when the image data obtained by the MPEG decoder 216 is stereoscopic image data (left-eye image data, right-eye image data) for displaying a stereoscopic image, the video signal processing circuit 217 converts the stereoscopic image data. Processing is performed according to the transmission method.

  The video signal processing circuit 217 corrects the timing of the left eye image data and the right eye image data described above when the disc player 210 performs the timing correction. In this case, the video signal processing circuit 217 constitutes a timing correction unit. Details of timing correction in the video signal processing circuit 217 will be described later.

  The audio decoder 218 performs a decoding process on the audio elementary stream separated by the demultiplexer 215 to obtain uncompressed audio data. The audio signal processing circuit 219 performs sound quality adjustment processing or the like on the audio data obtained by the audio decoder 218 as necessary, and supplies the result to the HDMI transmission unit 212.

  The HDMI transmission unit 212 transmits baseband image (video) and audio data from the HDMI terminal 211 by communication conforming to HDMI. In this case, since transmission is performed using the HDMI TMDS channel, image and audio data are packed and output from the HDMI transmission unit 212 to the HDMI terminal 211. Details of the HDMI transmission unit 212 will be described later.

  The operation of the disc player 210 shown in FIG. 2 will be briefly described. The reproduction data of the BD / DVD drive 214 is supplied to the demultiplexer 215 and separated into elementary streams such as video and audio. The elementary stream of video separated by the demultiplexer 215 is supplied to the MPEG decoder 216 and decoded to obtain uncompressed image data. Also, the audio elementary stream separated by the demultiplexer 215 is supplied to the audio decoder 218 and decoded to obtain uncompressed audio data.

  Image data obtained by the MPEG decoder 216 is supplied to the HDMI transmission unit 212 via the video signal processing circuit 217. The audio data obtained by the audio decoder 218 is supplied to the HDMI transmission unit 212 via the audio signal processing circuit 219. These image and audio data are transmitted from the HDMI terminal 211 to the HDMI cable via the HDMI TMDS channel.

  When the image data obtained by the MPEG decoder 216 is stereoscopic image data, the stereoscopic image data is processed by the video signal processing circuit 217 into a state corresponding to the transmission method, and then supplied to the HDMI transmission unit 212. The If the image data is stereoscopic image data, the video signal processing circuit 217 corrects the timing of the left eye image data and the right eye image data constituting the stereoscopic image data as necessary.

[Configuration example of TV receiver]
FIG. 3 shows a configuration example of the television receiver 250. The television receiver 250 includes an HDMI terminal 251, an HDMI receiving unit 252, and a 3D signal processing unit 254. In addition, the television receiver 250 includes an antenna terminal 255, a digital tuner 256, a demultiplexer 257, an MPEG decoder 258, a video signal processing circuit 259, a graphic generation circuit 260, a panel drive circuit 261, and a display panel 262. have.

  The television receiver 250 includes an audio signal processing circuit 263, an audio amplification circuit 264, a speaker 265, an internal bus 270, a CPU 271, a flash ROM 272, and a DRAM 273. The television receiver 250 includes an Ethernet interface (Ethernet I / F) 274, a network terminal 275, a remote control receiving unit 276, a remote control transmitter 277, and a DTCP circuit 278.

  The antenna terminal 255 is a terminal for inputting a television broadcast signal received by a receiving antenna (not shown). The digital tuner 256 processes the television broadcast signal input to the antenna terminal 255 and outputs a predetermined transport stream corresponding to the user's selected channel. The demultiplexer 257 extracts a partial TS (Transport Stream) (a TS packet of video data and a TS packet of audio data) corresponding to the user's selected channel from the transport stream obtained by the digital tuner 256.

  Further, the demultiplexer 257 extracts PSI / SI (Program Specific Information / Service Information) from the transport stream obtained by the digital tuner 256 and outputs it to the CPU 271. A plurality of channels are multiplexed in the transport stream obtained by the digital tuner 256. The process of extracting the partial TS of an arbitrary channel from the transport stream by the demultiplexer 257 can be performed by obtaining the packet ID (PID) information of the arbitrary channel from the PSI / SI (PAT / PMT). .

  The MPEG decoder 258 obtains image data by performing decoding processing on a video PES (Packetized Elementary Stream) packet constituted by a TS packet of video data obtained by the demultiplexer 257. Also, the MPEG decoder 258 performs a decoding process on the audio PES packet configured by the TS packet of the audio data obtained by the demultiplexer 257 to obtain audio data.

  The video signal processing circuit 259 and the graphic generation circuit 260 perform scaling processing (resolution conversion processing) and graphic processing on the image data obtained by the MPEG decoder 258 or the image data received by the HDMI receiving unit 252 as necessary. Data superimposition processing is performed. Also, the video signal processing circuit 259, when the image data received by the HDMI receiving unit 252 is stereoscopic image data including left eye image data and right eye image data, the left eye image data and right eye image data. On the other hand, processing necessary for displaying a stereoscopic image is performed. The panel drive circuit 261 drives the display panel 262 based on the video (image) data output from the graphic generation circuit 260.

  The display panel 262 includes, for example, an LCD (Liquid Crystal Display), a PDP (Plasma Display Panel), or the like. The audio signal processing circuit 263 performs necessary processing such as D / A conversion on the audio data obtained by the MPEG decoder 258. The audio amplifier circuit 264 amplifies the audio signal output from the audio signal processing circuit 263 and supplies the amplified audio signal to the speaker 265.

  The CPU 271 controls the operation of each unit of the television receiver 250. The flash ROM 272 stores control software and data. The DRAM 273 constitutes a work area for the CPU 271. The CPU 271 develops software and data read from the flash ROM 272 on the DRAM 273 to activate the software, and controls each unit of the television receiver 250.

  The remote control receiving unit 276 receives the remote control signal (remote control code) transmitted from the remote control transmitter 277 and supplies it to the CPU 271. The CPU 271 controls each unit of the television receiver 250 based on the remote control code. The network terminal 275 is a terminal connected to the network, and is connected to the Ethernet interface 274. The CPU 271, flash ROM 272, DRAM 273, and Ethernet interface 274 are connected to the internal bus 270. The DTCP circuit 278 decrypts the encrypted data supplied from the network terminal 275 to the Ethernet interface 274.

  The HDMI receiving unit (HDMI sink) 252 receives uncompressed image (video) and audio data supplied to the HDMI terminal 251 via the HDMI cable 350 by communication conforming to HDMI. Details of the HDMI receiving unit 252 will be described later.

  The 3D signal processing unit 254 performs processing (decoding processing) corresponding to the transmission method on the 3D image data received by the HDMI receiving unit 252 to generate left eye image data and right eye image data. That is, the 3D signal processing unit 254 performs processing opposite to that of the video signal processing circuit 217 (see FIG. 2) of the disc player 210 described above, so that the left eye image data and right eye image data constituting the stereoscopic image data are processed. To get.

  In addition, when the television receiver 250 performs the timing correction of the left eye image data and the right eye image data described above, the 3D signal processing unit 254 performs the timing correction. In that case, the 3D signal processing unit 254 constitutes a timing correction unit. Details of timing correction in the 3D signal processing unit 254 will be described later.

  The operation of the television receiver 250 shown in FIG. 3 will be briefly described. The television broadcast signal input to the antenna terminal 255 is supplied to the digital tuner 256. The digital tuner 256 processes the television broadcast signal, outputs a predetermined transport stream corresponding to the user's selected channel, and supplies the predetermined transport stream to the demultiplexer 257. The demultiplexer 257 extracts a partial TS (video data TS packet, audio data TS packet) corresponding to the user's selected channel from the transport stream, and supplies the partial TS to the MPEG decoder 258.

  In the MPEG decoder 258, image data is obtained by performing a decoding process on a video PES packet constituted by a TS packet of video data. The image data is supplied to the panel drive circuit 261 after scaling processing (resolution conversion processing), graphics data superimposition processing, and the like are performed as necessary in the video signal processing circuit 259 and the graphic generation circuit 260. The Therefore, the display panel 262 displays an image corresponding to the user's selected channel.

  Also, in the MPEG decoder 258, audio data is obtained by performing a decoding process on the audio PES packet configured by the TS packet of audio data. The audio data is subjected to necessary processing such as D / A conversion by the audio signal processing circuit 263, further amplified by the audio amplification circuit 264, and then supplied to the speaker 265. Therefore, sound corresponding to the user's selected channel is output from the speaker 265.

  The encrypted content data (image data and audio data) supplied from the network terminal 275 to the Ethernet interface 274 is decrypted by the DTCP circuit 278 and then supplied to the MPEG decoder 258. Thereafter, the operation is the same as when the above-described television broadcast signal is received, an image is displayed on the display panel 262, and sound is output from the speaker 265.

  Also, the HDMI receiving unit 252 acquires image data and audio data transmitted from the disc player 210 connected to the HDMI terminal 251 via the HDMI cable 350. The image data is supplied to the video signal processing circuit 259 via the 3D signal processing unit 254. The audio data is directly supplied to the audio signal processing circuit 263. Thereafter, the operation is the same as when the above-described television broadcast signal is received, an image is displayed on the display panel 262, and sound is output from the speaker 265.

  When the image data received by the HDMI receiving unit 252 is stereoscopic image data, the 3D signal processing unit 254 performs processing (decoding processing) corresponding to the transmission method on the 3D image data. Left eye image data and right eye image data are generated. Then, the left eye image data and the right eye image data are supplied from the 3D signal processing unit 254 to the video signal processing unit 259. When the image data is stereoscopic image data, the 3D signal processing unit 254 corrects the timing of the left eye image data and right eye image data constituting the stereoscopic image data as necessary.

  The video signal processing circuit 259 displays a stereoscopic image based on the left-eye image data and the right-eye image data when the left-eye image data and the right-eye image data constituting the stereoscopic image data are supplied. Image data is generated. Therefore, a stereoscopic image is displayed on the display panel 262.

[Configuration Example of HDMI Transmitter and HDMI Receiver]
FIG. 4 shows a configuration example of the HDMI transmitting unit (HDMI source) 212 of the disc player 210 and the HDMI receiving unit (HDMI sink) 252 of the television receiver 250 in the AV system 200 of FIG.

  The HDMI transmission unit 212 transmits, in a plurality of channels, a differential signal corresponding to pixel data of an uncompressed image for one screen in an effective image section (hereinafter also referred to as an active video section as appropriate) using a plurality of channels. Send in one direction. Here, the effective image section is a section obtained by removing the horizontal blanking section and the vertical blanking section from the section from one vertical synchronization signal to the next vertical synchronization signal. In addition, the HDMI transmission unit 212 receives, at a plurality of channels, a differential signal corresponding to at least audio data, control data, and other auxiliary data associated with an image in a horizontal blanking interval or a vertical blanking interval. Transmit to the unit 252 in one direction.

  The transmission channels of the HDMI system including the HDMI transmission unit 212 and the HDMI reception unit 252 include the following transmission channels. That is, three TMDS channels # 0 to ## as transmission channels for serially transmitting pixel data and audio data in one direction in synchronization with the pixel clock from the HDMI transmission unit 212 to the HDMI reception unit 252. There are two. There is also a TMDS clock channel as a transmission channel for transmitting a pixel clock.

  The HDMI transmission unit 212 includes an HDMI transmitter 81. The transmitter 81 converts, for example, pixel data of an uncompressed image into a corresponding differential signal, and is connected via the HDMI cable 350 with three TMDS channels # 0, # 1, and # 2 that are a plurality of channels. Serial transmission in one direction to the HDMI receiving unit 252.

  The transmitter 81 converts audio data accompanying uncompressed images, further necessary control data and other auxiliary data, etc. into corresponding differential signals, and converts them into three TMDS channels # 0, # 1, #. 2 serially transmits to the HDMI receiving unit 252 in one direction.

  Further, the transmitter 81 transmits the pixel clock synchronized with the pixel data transmitted through the three TMDS channels # 0, # 1, and # 2 to the HDMI receiving unit 252 connected via the HDMI cable 350 using the TMDS clock channel. Send. Here, in one TMDS channel #i (i = 0, 1, 2), 10-bit pixel data is transmitted during one pixel clock.

  The HDMI receiving unit 252 receives a differential signal corresponding to the pixel data transmitted from the HDMI transmitting unit 212 in one direction through a plurality of channels in the active video section. Further, the HDMI receiving unit 252 transmits differential signals corresponding to audio data and control data transmitted in one direction from the HDMI transmitting unit 212 through a plurality of channels in a horizontal blanking interval or a vertical blanking interval. Receive.

  That is, the HDMI receiving unit 252 includes an HDMI receiver 82. This HDMI receiver 82 uses TMDS channels # 0, # 1, and # 2 to transmit a differential signal corresponding to pixel data and a difference corresponding to audio data and control data transmitted in one direction from the HDMI transmission unit 212. Receive a motion signal. In this case, reception is performed in synchronization with the pixel clock transmitted from the HDMI transmission unit 212 via the TMDS clock channel.

  In addition to the TMDS channels # 0 to # 2 and the TMDS clock channel described above, the transmission channel of the HDMI system including the HDMI transmission unit 212 and the HDMI reception unit 252 is called a DDC (Display Data Channel) 83 or a CEC line 84. There is a transmission channel. The DDC 83 includes two signal lines (not shown) included in the HDMI cable 350, and the HDMI transmission unit 212 is connected to the HDMI reception unit 252 connected via the HDMI cable 350 from the E-EDID (Enhanced Extended Display Identification Data). Used to read

  That is, the HDMI receiving unit 252 has an EDID ROM (Read Only Memory) 85 that stores E-EDID, which is performance information related to its own performance (configuration / capability), in addition to the HDMI receiver 81. . For example, in response to a request from the CPU 221 (see FIG. 2), the HDMI transmission unit 212 transmits the E-EDID of the HDMI reception unit 252 from the HDMI reception unit 252 connected via the HDMI cable 350 to the DDC 83. Read through. The HDMI transmission unit 212 sends the read E-EDID to the CPU 221. The CPU 221 stores this E-EDID in the flash ROM 222 or the DRAM 223.

  The CPU 221 can recognize the performance setting of the HDMI receiving unit 252 based on the E-EDID. For example, the CPU 221 recognizes the format (resolution, frame rate, aspect, etc.) of image data that can be supported by the television receiver 250 having the HDMI receiving unit 252. In this embodiment, when the disc player 210 corrects the timing of the left eye image data and the right eye image data, the CPU 221 sets the HDMI receiving unit 252 based on display timing information described later included in the E-EDID. The display timing of the left eye image and the right eye image in the television receiver 250 is recognized.

  The CEC line 84 includes one signal line (not shown) included in the HDMI cable 350 and is used for bidirectional communication of control data between the HDMI transmission unit 212 and the HDMI reception unit 252. The CEC line 84 constitutes a control data line.

  The HDMI cable 350 includes a line (HPD line) 86 connected to a pin called HPD (Hot Plug Detect). The source device can detect the connection of the sink device using the line 86. Also, the HDMI cable 350 includes a line 87 used for supplying power from the source device to the sink device. Further, the HDMI cable 350 includes a reserved line 88.

  FIG. 5 shows a configuration example of the HDMI transmitter 81 and the HDMI receiver 82 of FIG. The HDMI transmitter 81 has three encoder / serializers 81A, 81B, and 81C corresponding to the three TMDS channels # 0, # 1, and # 2, respectively. Each of the encoders / serializers 81A, 81B, 81C encodes the image data, auxiliary data, and control data supplied thereto, converts the parallel data into serial data, and transmits the data by a differential signal. Here, when the image data has, for example, three components R, G, and B, the B component is supplied to the encoder / serializer 81A, the G component is supplied to the encoder / serializer 81B, and the R component is supplied to the encoder / serializer 81C. Supplied.

  The auxiliary data includes, for example, audio data and control packets. The control packets are supplied to, for example, the encoder / serializer 81A, and the audio data is supplied to the encoder / serializers 81B and 81C. Further, the control data includes a 1-bit vertical synchronization signal (VSYNC), a 1-bit horizontal synchronization signal (HSYNC), and 1-bit control bits CTL0, CTL1, CTL2, and CTL3. The vertical synchronization signal and the horizontal synchronization signal are supplied to the encoder / serializer 81A. The control bits CTL0 and CTL1 are supplied to the encoder / serializer 81B, and the control bits CTL2 and CTL3 are supplied to the encoder / serializer 81C.

  The encoder / serializer 81A transmits the B component of the image data, the vertical synchronization signal and the horizontal synchronization signal, and auxiliary data supplied thereto in a time division manner. That is, the encoder / serializer 81A converts the B component of the image data supplied thereto into 8-bit parallel data that is a fixed number of bits. Further, the encoder / serializer 81A encodes the parallel data, converts it into serial data, and transmits it through the TMDS channel # 0.

  The encoder / serializer 81A encodes the 2-bit parallel data of the vertical synchronization signal and horizontal synchronization signal supplied thereto, converts the data into serial data, and transmits the serial data through the TMDS channel # 0. Furthermore, the encoder / serializer 81A converts the auxiliary data supplied thereto into parallel data in units of 4 bits. Then, the encoder / serializer 81A encodes the parallel data, converts it into serial data, and transmits it through the TMDS channel # 0.

  The encoder / serializer 81B transmits the G component of the image data, control bits CTL0 and CTL1, and auxiliary data supplied thereto in a time division manner. That is, the encoder / serializer 81B sets the G component of the image data supplied thereto as parallel data in units of 8 bits, which is a fixed number of bits. Further, the encoder / serializer 81B encodes the parallel data, converts it into serial data, and transmits it through the TMDS channel # 1.

  The encoder / serializer 81B encodes the 2-bit parallel data of the control bits CTL0 and CTL1 supplied thereto, converts the data into serial data, and transmits the serial data through the TMDS channel # 1. Furthermore, the encoder / serializer 81B converts the auxiliary data supplied thereto into parallel data in units of 4 bits. Then, the encoder / serializer 81B encodes the parallel data, converts it into serial data, and transmits it through the TMDS channel # 1.

  The encoder / serializer 81C transmits the R component of the image data, control bits CTL2 and CTL3, and auxiliary data supplied thereto in a time division manner. That is, the encoder / serializer 81C sets the R component of the image data supplied thereto as parallel data in units of 8 bits, which is a fixed number of bits. Further, the encoder / serializer 81C encodes the parallel data, converts it into serial data, and transmits it through the TMDS channel # 2.

  The encoder / serializer 81C encodes 2-bit parallel data of the control bits CTL2 and CTL3 supplied thereto, converts the data into serial data, and transmits the serial data through the TMDS channel # 2. Furthermore, the encoder / serializer 81C converts the auxiliary data supplied thereto into parallel data in units of 4 bits. Then, the encoder / serializer 81C encodes the parallel data, converts it into serial data, and transmits it through the TMDS channel # 2.

  The HDMI receiver 82 has three recovery / decoders 82A, 82B, and 82C corresponding to the three TMDS channels # 0, # 1, and # 2, respectively. Then, each of the recovery / decoders 82A, 82B, and 82C receives image data, auxiliary data, and control data transmitted as differential signals through the TMDS channels # 0, # 1, and # 2. Further, each of the recovery / decoders 82A, 82B, and 82C converts the image data, auxiliary data, and control data from serial data to parallel data, and further decodes and outputs them.

  That is, the recovery / decoder 82A receives the B component of the image data, the vertical synchronization signal, the horizontal synchronization signal, and the auxiliary data that are transmitted as differential signals through the TMDS channel # 0. Then, the recovery / decoder 82A converts the B component of the image data, the vertical synchronization signal, the horizontal synchronization signal, and the auxiliary data from serial data to parallel data, and decodes and outputs them.

  The recovery / decoder 82B receives the G component of the image data, the control bits CTL0 and CTL1, and the auxiliary data transmitted by the differential signal through the TMDS channel # 1. Then, the recovery / decoder 82B converts the G component of the image data, the control bits CTL0 and CTL1, and the auxiliary data from serial data to parallel data, and decodes and outputs them.

  The recovery / decoder 82C receives the R component of the image data, the control bits CTL2 and CTL3, and the auxiliary data transmitted by the differential signal through the TMDS channel # 2. Then, the recovery / decoder 82C converts the R component of the image data, the control bits CTL2 and CTL3, and the auxiliary data from serial data to parallel data, and decodes and outputs them.

  FIG. 6 shows an example of the structure of TMDS transmission data. FIG. 6 shows sections of various transmission data when image data of horizontal × vertical 1920 pixels × 1080 lines is transmitted on the TMDS channels # 0, # 1, and # 2.

  A video field (Video Field) in which transmission data is transmitted through the three TMDS channels # 0, # 1, and # 2 of HDMI has three types of sections according to the type of transmission data. These three types of sections are a video data period, a data island period, and a control period.

  Here, the video field period is a period from the rising edge (active edge) of a certain vertical synchronizing signal to the rising edge of the next vertical synchronizing signal. The video field period is divided into a horizontal blanking period (horizontal blanking), a vertical blanking period (vertical blanking), and an active video period (Active Video). This active video section is a section obtained by removing the horizontal blanking period and the vertical blanking period from the video field section.

  The video data section is assigned to the active video section. In this video data section, 1920 pixel (pixel) × 1080 line effective pixel (Active pixel) data constituting uncompressed image data for one screen is transmitted.

  The data island period and the control period are assigned to the horizontal blanking period and the vertical blanking period. In the data island section and the control section, auxiliary data (Auxiliary data) is transmitted. That is, the data island period is assigned to a part of the horizontal blanking period and the vertical blanking period. In this data island period, for example, audio data packets, which are data not related to control, of auxiliary data are transmitted.

  The control period is allocated to other parts of the horizontal blanking period and the vertical blanking period. In this control period, for example, vertical synchronization signals, horizontal synchronization signals, control packets, and the like, which are data related to control, of auxiliary data are transmitted.

  FIG. 7 shows an example of the pin arrangement of the HDMI terminals 211 and 251. The pin arrangement shown in FIG. 7 is called type A (type-A).

  Two lines, which are differential lines through which TMDS Data # i + and TMDS Data # i−, which are differential signals of TMDS channel #i, are transmitted are pins to which TMDS Data # i + is assigned (the pin number is 1). , 4, 7) and pins assigned with TMDS Data # i− (pin numbers 3, 6, 9).

  A CEC line 84 through which a CEC signal as control data is transmitted is connected to a pin having a pin number of 13, and a pin having a pin number of 14 is a reserved pin. A line through which an SDA (Serial Data) signal such as E-EDID is transmitted is connected to a pin having a pin number of 16 and is an SCL (Serial Clock) which is a clock signal used for synchronization when transmitting and receiving the SDA signal. A line through which a signal is transmitted is connected to a pin having a pin number of 15. The above-described DDC 83 includes a line for transmitting the SDA signal and a line for transmitting the SCL signal.

  Further, as described above, the HPD line 86 for detecting the connection of the sink device by the source device is connected to the pin having the pin number 19. Further, as described above, the line 87 for supplying power is connected to a pin having a pin number of 18.

[Example of transmission method of stereoscopic image data]
As transmission methods for stereoscopic image data (3D image data), the following first to third transmission methods are listed, but other transmission methods may be used. Here, as shown in FIG. 8, an example will be described in which the image data of the left eye (L) and the right eye (R) is image data of a 1920 × 1080p pixel format, respectively.

  As shown in FIG. 9A, the first transmission method is a method in which left-eye image data and right-eye image data are sequentially switched and transmitted for each field. In this case, a field memory is required for the switching process, but signal processing at the source device is the simplest. FIG. 10 shows an example of TMDS transmission data in the first transmission method. In this case, left-eye (L) image data of effective pixels (active pixels) corresponding to 1920 pixels × 1080 lines is arranged in an active video section of 1920 pixels × 1080 lines in an odd field. Also, right-eye (R) image data of effective pixels (active pixels) for 1920 pixels × 1080 lines is arranged in an active video section of 1920 pixels × 1080 lines in the even field.

  As shown in FIG. 9B, the second transmission method is a method of alternately transmitting one line of left eye image data and one line of right eye image data. In this case, the left eye image data and the right eye image data are each thinned by half. This method is a video signal itself of a stereoscopic image display method called a “phase difference plate method”, which is the simplest method for signal processing on the display unit of the sink device, but the vertical resolution is lower than the original signal. It becomes half.

  FIG. 11 shows an example of TMDS transmission data of the second transmission method. In this case, 1920 pixel × 1080 line active video section, 1920 pixel × 1080 line effective pixel (active pixel) data (the synthesis of left eye (L) image data and right eye (R) image data). Data) is arranged. In the case of the second transmission method, as described above, the left-eye image data and the right-eye image data are each thinned by 1/2 in the vertical direction. Here, the left eye image data to be transmitted is either an odd line or an even line, and similarly, the right eye image data to be transmitted is either an odd line or an even line.

  The third transmission method is a “Side By Side” method that is currently used in experimental broadcasting. As shown in FIG. 9C, pixel data of left-eye image data is transmitted in the first half of the horizontal direction, and horizontal In the latter half of the direction, the pixel data of the right eye image data is transmitted. In this case, in the left eye image data and the right eye image data, the pixel data in the horizontal direction is thinned out to 1/2. This third transmission method is compatible even with a source device that does not support stereoscopic image data if it is output as existing 2D image data, and is highly compatible with conventional source devices.

  FIG. 12 shows an example of TMDS transmission data of the third transmission method. In this case, 1920 pixel × 1080 line active video section, 1920 pixel × 1080 line effective pixel (active pixel) data (the synthesis of left eye (L) image data and right eye (R) image data). Data) is arranged. In the case of the third transmission method, as described above, the left-eye image data and the right-eye image data are each decimated by half of the pixel data in the horizontal direction.

[Timing correction operation in disc player]
In the AV system 200 shown in FIG. 1, the shooting timing of the left eye image data and right eye image data reproduced by the disc player 210 is different from the display timing of the left eye image and right eye image displayed by the television receiver 250. In some cases, timing correction is performed. A case where the timing correction is performed by the video signal processing circuit 217 of the disc player 210 will be described.

  In this embodiment, the disc player 210 acquires display timing information of the left eye image and the right eye image from the television receiver 250. That is, the disc player 210 (CPU 221) acquires display timing information by reading E-EDID (Enhanced Extended Display Identification Data) from the television receiver 250. In other words, the television receiver 250 supplies the information to the disc player 210 by including the display timing information in the E-EDID.

  FIG. 13 shows an example of the data structure of E-EDID. This E-EDID is composed of a basic block and an extended block. At the head of the basic block, data defined by the E-EDID 1.3 standard represented by “E-EDID 1.3 Basic Structure” is arranged, and then the conventional EDID represented by “Preferred timing” and Timing information for maintaining the compatibility of the EDID and timing information different from “Preferred timing” for maintaining the compatibility with the conventional EDID represented by “2nd timing” are arranged.

  The basic block includes information indicating the name of the display device represented by “Monitor NAME” following “2nd timing”, and aspect ratios represented by “Monitor Range Limits” of 4: 3 and 16 : Information indicating the number of displayable pixels in the case of 9 is arranged in order.

  “Short Video Descriptor” is arranged at the head of the extended block. This is information indicating the displayable image size (resolution), the frame rate, and whether it is interlaced or progressive. Subsequently, “Short Audio Descriptor” is arranged. This is information such as a reproducible audio codec system, a sampling frequency, a cutoff band, and the number of codec bits. Subsequently, information on left and right speakers represented by “Speaker Allocation” is arranged.

  In addition, the extension block maintains compatibility with the conventional EDID represented by “3rd timing”, the data defined uniquely for each manufacturer represented by “Vender Specific” following “Speaker Allocation”. Timing information for maintaining compatibility with the conventional EDID represented by “4th timing” is arranged.

  FIG. 14 shows an example of the data structure of the Vender Specific area (HDMI Vendor Specific Data Block). In the Vender Specific area, a 0th block to an Nth block, which are 1-byte blocks, are provided.

  In the 0th block arranged at the head of the data represented by “Vender Specific”, a header indicating a data area of data “Vender Specific” (“Vender-Specific tag code (= 3)”) and “Vendor Specific” Information indicating the length of the data “Vender Specific” represented by “Length (= N)” is arranged.

  In the first to third blocks, information indicating the number “0x000C03” registered for HDMI (R) represented by “24-bit IEEE Registration Identifier (0x000C03) LSB first” is arranged. Further, in the fourth block and the fifth block, information indicating the physical address of the 24-bit sink device represented by “A”, “B”, “C”, and “D” is arranged.

  The sixth block is represented by a flag indicating a function supported by the sink device represented by “Supports-AI”, “DC-48 bit”, “DC-36 bit”, and “DC-30 bit”. Each of the information specifying the number of bits per pixel, a flag indicating whether the sink device supports transmission of a YCbCr4: 4: 4 image, represented by “DC-Y444”, and “DVI-Dual A flag indicating whether the sink device corresponds to dual DVI (Digital Visual Interface) is arranged.

  In the seventh block, information indicating the maximum frequency of the TMDS pixel clock represented by “Max-TMDS-Clock” is arranged. Furthermore, a flag indicating the presence or absence of video and audio delay information represented by “Latency” is arranged in the sixth and seventh bits of the eighth block.

  In addition, in the ninth block, the delay time data of the progressive video represented by “Video Latency” is arranged, and in the tenth block, the audio accompanying the progressive video represented by “Audio Latency”. The delay time data is arranged. Furthermore, in the eleventh block, delay time data of an interlaced video represented by “Interlaced Video Latency” is arranged, and in the twelfth block, an interlaced video represented by “Interlaced Audio Latency” is attached. Audio delay time data is arranged.

  In this embodiment, a flag (3D_Fields_Present) indicating the presence / absence of display timing information is arranged in the fifth bit of the eighth block. This flag is set to “1”, and display timing information (LR_Display_Timing) is arranged in the sixth and seventh bits of the thirteenth block.

  For example, “00” indicates that the display timings of the left eye image and the right eye image are the same. Further, for example, “01” indicates that the left eye image and the right eye image are alternately displayed, and the left eye image and the right eye image are displayed in this order in the same frame. Further, for example, “10” indicates that the left eye image and the right eye image are alternately displayed, and the right eye image and the left eye image are displayed in this order in the same frame.

In addition, when it is determined that the left-eye image and the right-eye image are displayed in the same frame, the display timing information (LR_Display_Timing) may be 1-bit information. In this case, for example, “0” indicates that the display timings of the left eye image and the right eye image are the same. “1” indicates that the left-eye image and the right-eye image are alternately displayed, and the left-eye image and the right-eye image are displayed in the same frame.
It should be noted that the display timing information may be acquired not only automatically via HDMI as described above, but also acquired by setting (selecting) on the disc player 210 by the user. In that case, for example, the user operates the remote control transmitter 227 to set the display timing of the left eye image and the right eye image. In this case, the remote control transmitter 227 constitutes a user setting unit.

  As described above, the CPU 221 of the disc player 210 determines the display timing of the left eye image and the right eye image in the television receiver 250 based on the display timing information included in the E-EDID or the display timing information set by the user. recognize. Further, the CPU 221 determines the shooting timing of the left eye image data and right eye image data reproduced by the BD / DVD drive 214, for example, the metadata in the elementary stream of these videos or the meta data in the BD / DVD disc. Recognize by metadata attached to data.

  When the shooting timing and the display timing are different, the CPU 221 controls the video signal processing circuit 217 to perform the timing correction process. By this timing correction processing, the timing of the left eye image data and the right eye image data reproduced by the BD / DVD drive 214 is matched with the display timing of the left eye image and the right eye image.

"Timing correction process"
Timing correction processing in the video signal processing circuit 217 of the disc player 210 will be described. When the shooting timing and the display timing are different, there are the following two types. The first case is obtained by alternately capturing left eye image data and right eye image data, and the left eye image and the right eye image are displayed at the same timing. In the second case, the left eye image data and the right eye image data are obtained by being photographed at the same timing, and the left eye image and the right eye image are alternately displayed.

  First, timing correction processing performed in the video signal processing circuit 217 in the first case will be described with reference to FIG. FIG. 15 shows an example in which the left eye image data (L) and the right eye image data (R) are captured in the same frame.

(A) First Correction Processing Example FIG. 15A shows a first correction processing example. This first correction processing example is an example in which the timings of both the left eye image data (L) and the right eye image data (R) are corrected. By correcting both timings in this way, the image quality deterioration of the left and right images at the time of timing correction can be made comparable.

  In this case, as for the left eye image data, left eye image data (L ′) at a timing advanced by 0.25 frame period is generated in each frame by interpolation processing using the left and right left eye image data (L). Is done. As for right-eye image data, right-eye image data (R ′) with a timing delayed by 0.25 frame period is generated in each frame by interpolation processing using the right and left right-eye image data (R). The The timings of the left-eye image data (L ′) and the right-eye image data (R ′) generated in this way are the same in each frame, and match the display timing of the left-eye image and the right-eye image.

(B) Second Correction Processing Example FIG. 15B shows a second correction processing example. In the second correction processing example, one timing of the left eye image data (L) and the right eye image data (R) is corrected. In this case, for the right eye image data, right eye image data (R ′) whose timing is shifted by 0.5 frame periods is generated by interpolation processing using the right and left right eye image data (R). The timings of the right eye image data (R ′) and the left eye image data (L) generated in this way are the same in each frame, and match the display timing of the left eye image and the right eye image.

  FIG. 15B shows an example in which the timing of the right eye image data (R) is corrected. Conversely, the timing of the left eye image data (L) may be corrected. In this embodiment, in the disc player 210, the user can select which of the left eye image data (L) and the right eye image data (R) is to be corrected by operating the remote control transmitter 227. The Here, the remote control transmitter 227 constitutes a selection unit that selects image data for timing correction. In this case, by selecting the image data that displays the image that is not effective as the image data for correcting the timing, it is possible to suppress the influence of the image quality deterioration during the timing correction.

  Next, timing correction processing performed in the video signal processing circuit 217 in the second case will be described with reference to FIG. Note that FIG. 16 shows an example in which the right eye image and the left eye image are displayed in this order in the same frame.

(A) First Correction Processing Example FIG. 16A shows a first correction processing example. This first correction processing example is an example in which the timings of both the left eye image data (L) and the right eye image data (R) are corrected. By correcting both timings in this way, the image quality deterioration of the left and right images at the time of timing correction can be made comparable.

  In this case, for the left eye image data, left eye image data (L ′) at a timing advanced by 0.75 frame period is generated in each frame by interpolation processing using the left and right left eye image data (L). Is done. As for the right eye image data, right eye image data (R ′) at a timing advanced by 0.25 frame period is generated in each frame by interpolation processing using the right and left right eye image data (R). The The timings of the left eye image data (L ′) and the right eye image data (R ′) generated in this way are alternated every 0.5 frame, and the timing matches the display timing of the left eye image and the right eye image. Become.

(B) Second Correction Processing Example FIG. 16B shows a second correction processing example. In the second correction processing example, one timing of the left eye image data (L) and the right eye image data (R) is corrected. In this case, with respect to the right eye image data, right eye image data (R ′) at a timing advanced by 0.5 frame period is generated in each frame by interpolation processing using the right and left right eye image data (R). Is done. The timings of the right eye image data (R ′) and the left eye image data (L) generated in this way are alternated every 0.5 frames, and the timings correspond to the display timing of the left eye image and the right eye image. Become.

  FIG. 16B shows an example in which the timing of the right eye image data (R) is corrected. Conversely, the timing of the left eye image data (L) may be corrected. In this embodiment, in the disc player 210, the user can select which of the left eye image data (L) and the right eye image data (R) is to be corrected by operating the remote control transmitter 227. The Here, the remote control transmitter 227 constitutes a selection unit that selects image data for timing correction. In this case, by selecting the image data that displays the image that is not effective as the image data for correcting the timing, it is possible to suppress the influence of the image quality deterioration during the timing correction.

[Timing correction operation in TV receiver]
In the AV system 200 shown in FIG. 1, the shooting timing of the left eye image data and right eye image data reproduced by the disc player 210 is different from the display timing of the left eye image and right eye image displayed by the television receiver 250. In some cases, timing correction is performed. A case where the timing correction is performed by the 3D signal processing unit 254 of the television receiver 250 will be described.

  In this embodiment, the television receiver 250 acquires shooting timing information of left-eye image data and right-eye image data from the disc player 210. That is, the television receiver 250 extracts and acquires shooting timing information from the blanking period of the stereoscopic image data received by the HDMI receiving unit 252. In other words, the disc player 210 supplies the photographing timing information to the television receiver 250 by inserting it in the blanking period of the stereoscopic image data to be transmitted from the HDMI transmission unit 212.

  In this case, the disc player 210 uses, for example, an HDMI AVI (Auxiliary Video Information) InfoFrame packet to insert shooting timing information into a blanking period of stereoscopic image data. The AVI InfoFrame packet is arranged in the data island section described above (see FIG. 6). FIG. 17 shows an example of the data structure of an AVI InfoFrame packet. In HDMI, the AVI InfoFrame packet can be used to transmit incidental information about an image from a source device to a sink device.

  “Packet Type” indicating the type of data packet is defined in the 0th byte. The “Packet Type” of the AVI InfoFrame packet is “0x82”. The version information of the packet data definition is described in the first byte. Information indicating the packet length is described in the second byte. Since each AVI InfoFrame is defined in CEA-861-D, it will be omitted.

  The 17th byte will be described. Shooting timing information (LR_Image_Timing) is arranged in the sixth and seventh bits of the 17th byte.

  For example, “00” indicates that the left eye image data and the right eye image data have the same shooting timing. For example, “01” indicates that the left eye image data and the right eye image data are alternately captured, and the left eye image data and the right eye image data are captured in the same frame. For example, “10” indicates that the left-eye image data and the right-eye image data are alternately captured, and the right-eye image data and the left-eye image data are captured in the same frame.

In addition, when it is determined that the left eye image data and the right eye image data are captured in the same frame, it may be considered that this photographing timing information (LR_Image_Timing) is 1-bit information. In this case, for example, “0” indicates that the display timings of the left eye image data and the right eye image data are the same. “1” indicates that the left-eye image data and the right-eye image data are alternately captured, and the left-eye image data and the right-eye image data are captured in the same frame.
Note that the photographing timing information may be acquired not only automatically via HDMI as described above but also acquired by setting (selecting) by the television receiver 250 by the user. In that case, for example, the user operates the remote control transmitter 277 to set the timing of the left eye image data and the right eye image data. In this case, the remote control transmitter 277 constitutes a user setting unit. Moreover, the structure which operate | moves on the assumption that the timing of left eye image data and right eye image data is the same without automatic acquisition or a user setting may be sufficient.

"Timing correction process"
Timing correction processing in the 3D signal processing unit 254 of the television receiver 250 will be described. When the shooting timing and the display timing are different, there are the following two types. The first case is obtained by alternately capturing left eye image data and right eye image data, and the left eye image and the right eye image are displayed at the same timing. In the second case, the left eye image data and the right eye image data are obtained by being photographed at the same timing, and the left eye image and the right eye image are alternately displayed.

  First, timing correction processing performed in the 3D signal processing unit 254 in the first case will be described with reference to FIGS. 15 and 18. FIGS. 15 and 18 show an example in which the left eye image data (L) and the right eye image data (R) are captured in the same frame.

(A) First Correction Processing Example FIG. 15A shows a first correction processing example. This first correction processing example is an example in which the timings of both the left eye image data (L) and the right eye image data (R) are corrected. Since the description of the first correction processing example has been described in the item of the timing correction operation in the above-described disc player 210, a description thereof will be omitted.

(B) Second Correction Processing Example FIG. 15B shows a second correction processing example. In the second correction processing example, one timing of the left eye image data (L) and the right eye image data (R) is corrected. Since the description of the second correction processing example has been described in the item of the timing correction operation in the above-described disc player 210, the description thereof will be omitted.

  FIG. 18 shows a third correction processing example. This third correction processing example is an example in which the timing is corrected by converting the left eye image data (L) and the right eye image data (R) into image data of a double frame rate. In FIG. 18A, the same frame image is repeated twice to obtain double frame rate image data. Further, in FIG. 18B, the frame images L ′ and R ′ generated by the interpolation processing are inserted between the previous and next frame images to obtain double frame rate image data.

  In this way, when the timing correction is performed by converting the image data to the double frame rate, the left eye image and the right eye image are displayed at the double frame rate, so that the afterimage can be reduced. In addition, as shown in FIG. 18B, when image data having a double frame rate is obtained by interpolation processing using previous and subsequent image data, an image with smooth motion can be displayed.

  Next, timing correction processing performed by the 3D signal processing unit 229 in the second case will be described with reference to FIG. Note that FIG. 16 shows an example in which the right eye image and the left eye image are displayed in this order in the same frame.

(A) First Correction Processing Example FIG. 16A shows a first correction processing example. This first correction processing example is an example in which the timings of both the left eye image data (L) and the right eye image data (R) are corrected. Since the description of the first correction processing example has been described in the item of the timing correction operation in the above-described disc player 210, a description thereof will be omitted.

(B) Second Correction Processing Example FIG. 16B shows a second correction processing example. In the second correction processing example, one timing of the left eye image data (L) and the right eye image data (R) is corrected. Since the description of the second correction processing example has been described in the item of the timing correction operation in the above-described disc player 210, the description thereof will be omitted.

  As described above, in the AV system 200 shown in FIG. 1, the left eye image data and right eye image data reproduced by the disc player 210 are captured, and the left eye image and right eye displayed by the television receiver 250 are displayed. When the image display timing is different, timing correction is performed. Therefore, the image quality can be improved with a moving image, and the viewer's fatigue can be reduced.

  In the AV system 200 shown in FIG. 1, when the timing correction is performed by the disc player 210, the disc player 210 acquires the display timing information of the left eye image and the right eye image from the television receiver 250, and the left eye image The timing correction of the data and the right eye image data is automatically performed. In the AV system 200 shown in FIG. 1, when the timing correction is performed by the television receiver 250, the television receiver 250 acquires the photographing timing information of the left eye image data and the right eye image data from the disc player 210, The timing correction of the left eye image data and the right eye image data is automatically performed. Therefore, the user's operation or setting time is not increased, and since there is no user's erroneous operation and setting, accurate timing correction can always be performed.

<2. Second Embodiment>
[Example of AV system configuration]
FIG. 19 shows a configuration example of an AV system 200A as the second embodiment. The AV system 200A includes a game machine 400 as a source device and a television receiver 250 as a sink device. The television receiver 250 is the same as the television receiver 250 in the AV system 200 of FIG.

  The game machine 400 and the television receiver 250 are connected via an HDMI cable 350. The game machine 400 is provided with an HDMI terminal 401 to which an HDMI transmission unit (HDMI TX) 402 is connected. One end of the HDMI cable 350 is connected to the HDMI terminal 401 of the game machine 400, and the other end of the HDMI cable 350 is connected to the HDMI terminal 251 of the television receiver 250.

  In the AV system 200A shown in FIG. 19, uncompressed image data (video signal) from the game machine 400 is transmitted to the television receiver 250 via the HDMI cable 350, and the television receiver 250 uses the image from the game machine 400. An image based on the data is displayed. Further, uncompressed audio data (audio signal) from the game machine 400 is transmitted to the television receiver 250 via the HDMI cable 350, and the audio based on the audio data from the game machine 400 is output from the television receiver 250. .

  When the image data sent from the game machine 400 to the television receiver 250 is stereoscopic image data (3D image data) including left-eye image data and right-eye image data for displaying a stereoscopic image, the television receiver 250 A stereoscopic image is displayed as a game image. The transmission method of stereoscopic image data from the game machine 400 to the television receiver 250 is the same as the transmission method of stereoscopic image data from the disc player 210 to the television receiver 250 in the AV system 200 shown in FIG. (See FIG. 12).

  Here, as described above, there are two types of display timings of the left eye image and the right eye image displayed on the television receiver 250: simultaneous and alternating. In the AV system 200A shown in FIG. 19, the timings of the left eye image data and the right eye image data for displaying a stereoscopic image as a game image generated by the game machine 400 are the left eye image and the right eye in the television receiver 250. It matches the display timing of the eye image.

[Game console configuration example]
FIG. 20 shows a configuration example of the game machine 400.
The game machine 400 includes an HDMI terminal 401, an HDMI transmission unit 402, an Ethernet interface (Ethernet I / F) 404, and a network terminal 405. The game machine 400 includes an input interface 406, a control pad 407, a drive interface 408, and a DVD / BD (Digital Versatile Disk / Blu-ray Disc) drive 409.

  The game machine 400 includes an internal bus 410, a CPU 411, a flash ROM 412, and a DRAM 413. In addition, the game machine 400 includes a drawing processing unit 414, a video random access memory (VRAM) 415, an audio processing unit 416, and an MPEG decoder 417. “Ethernet”, “Ethernet” and “Blu-ray Disc” are registered trademarks.

  The HDMI transmission unit (HDMI source) 402 transmits uncompressed (baseband) video (image) and audio data from the HDMI terminal 401 by communication conforming to HDMI. The HDMI transmission unit 401 has the same configuration as the HDMI transmission unit 212 in the disc player 210 of the AV system 200 in FIG.

  The CPU 411, flash ROM 412, DRAM 413, Ethernet interface 404, input interface 406 and drive interface 408 are connected to the internal bus 410. The drawing processing unit 414, VRAM 415, audio processing unit 416 and MPEG decoder 417 are connected to the internal bus 410. The DVD / BD drive 409 is connected to the internal bus 410 via the drive interface 408. The DVD / BD drive 409 reproduces content such as a movie recorded on a recording medium such as a DVD, and reproduces game software information recorded on the recording medium.

  When the game machine 400 functions as a playback device, the MPEG decoder 417 performs a decoding process on the compressed video data and audio data reproduced from a recording medium such as a DVD, and outputs uncompressed video data and audio data. obtain.

  The CPU 411 controls the operation of each unit of the game machine 400. The flash ROM 412 stores control software and data. The DRAM 413 constitutes a work area for the CPU 411. The CPU 411 develops software and data read from the flash ROM 412 on the DRAM 413 to activate the software, and controls each unit of the game machine 400.

  The control pad 407 constitutes a user operation unit. The input interface 406 takes an operation input signal from the control pad 407 into the internal bus 410. The drawing processing unit 414 includes a drawing engine. When the game machine 400 functions as a game machine, the drawing processing unit 414 dynamically creates a game image in accordance with a user operation from the control pad 407 based on the game software information, and develops the game image in the VRAM 415.

  The drawing processing unit 414 generates, as game image data, image data for displaying a two-dimensional image, as well as stereoscopic image data (left-eye image data, right-eye image data) for displaying a stereoscopic image. Generate. In this case, as will be described later, the rendering processing unit 414 uses the display timing information of the left eye image and the right eye image in the television receiver 250 to determine the timing of the left eye image data and right eye image data to be generated. Match the display timing of the eye image and right eye image. Details of timing adjustment in the drawing processing unit 414 will be described later.

  In addition, when the rendering processing unit 414 transmits stereoscopic image data for displaying a stereoscopic image through the HDMI TMDS channel, the rendering processing unit 414 processes the stereoscopic image data into a state corresponding to the transmission method (FIGS. 9 to 9). 12).

  When the game machine 400 functions as a game machine, the sound processing unit 416 generates sound data for obtaining game sound corresponding to the game image based on the game software information in accordance with the user's operation from the control pad 217. To do.

  The operation of the game machine 400 shown in FIG. 20 will be briefly described. In the drawing processing unit 414, image data for displaying a game image is dynamically generated based on the game software information in accordance with a user operation from the control pad 407, and developed in the VRAM 415. Then, image data is read from the VRAM 415 and supplied to the HDMI transmission unit 402. The audio data generated by the audio processing unit 416 is supplied to the HDMI transmission unit 402. The image and audio data is transmitted from the HDMI terminal 401 to the HDMI cable via the HDMI TMDS channel.

  Here, when the image data to be generated is stereoscopic image data (left eye image data, right eye image data), the timing of the left eye image data and the right eye image data is as follows. That is, the timing of the left eye image data and the right eye image data is made to match the display timing of the left eye image and the right eye image based on the display timing information of the left eye image and the right eye image of the television receiver 250. The

  In this case, the sound processing unit 416 generates sound data for obtaining game sound corresponding to the game image in accordance with the operation from the control pad 407 by the user based on the game software information. This audio data is supplied to the HDMI transmission unit 402. The game image and audio data supplied to the HDMI transmission unit 402 is transmitted from the HDMI terminal 401 to the HDMI cable via the HDMI TMDS channel.

[Timing adjustment on game consoles]
In the AV system 200A shown in FIG. 19, when the rendering processing unit 414 generates stereoscopic image data (left-eye image data, right-eye image data), the timing of the left-eye image data and right-eye image data is determined based on the left-eye image data. And the display timing of the right eye image.

In this embodiment, the game machine 400 acquires display timing information of the left eye image and the right eye image from the television receiver 250 in the same manner as the disc player 210 of the AV system 200 of FIG. That is, the game machine 400 (CPU 411) acquires the display timing information by reading E-EDID (see FIGS. 13 and 14) including the display timing information (LR_Display_Timing) from the television receiver 250. In other words, the television receiver 250 supplies the information to the game machine 400 by including the display timing information in the E-EDID.
Note that the display timing information is not only automatically acquired via HDMI as described above, but may be acquired by allowing the user to set (select) on the game machine 400.

  The CPU 411 of the game machine 400 recognizes the display timing of the left eye image and the right eye image in the television receiver 250 based on the display timing information included in the E-EDID as described above or the display timing information set by the user. To do. The CPU 411 controls the drawing processing unit 414 based on the display timing information, and uses the timings of the left eye image data and the right eye image data generated by the drawing processing unit 414 as the display timings of the left eye image and the right eye image. Match.

  Here, when the left eye image and the right eye image are displayed at the same timing, the rendering processing unit 414 performs modeling common to the left and right images in a 3D (three-dimensional) space, for example, for each frame, and the left eye image Data and right eye image data are generated. On the other hand, when the left eye image and the right eye image are alternately displayed, the rendering processing unit 414 performs modeling of the left image and right image in a 3D (three-dimensional) space, for example, every 0.5 frame. Modeling is performed to generate left eye image data and right eye image data.

  As described above, in the AV system 200A shown in FIG. 19, the timing of the left eye image data and the right eye image data for displaying a stereoscopic image as a game image generated by the game machine 400 is the television receiver 250. In accordance with the display timing of the left eye image and the right eye image. Therefore, the image quality can be improved with a moving image, and the viewer's fatigue can be reduced.

  In the AV system 200A shown in FIG. 19, in the game machine 400, the display timing information of the left eye image and the right eye image is acquired from the television receiver 250, and is generated by the drawing processing unit 414 based on the display timing information. The timing of the left eye image data and the right eye image data is automatically adjusted to the display timing of the left eye image and the right eye image in the television receiver 250. Therefore, there is no increase in the user's operation time, and accurate timing adjustment is always possible because there is no erroneous operation or setting by the user.

<3. Third Embodiment>
[Example of AV system configuration]
FIG. 21 shows a configuration example of an AV system 200B as the third embodiment. The AV system 200B includes a disc player 210 as a source device, an AV amplifier 300 as a repeater device, and a television receiver 250 as a sink device. The disc player 210 and the television receiver 250 are the same as the disc player 210 and the television receiver 250 in the AV system 200 of FIG.

  An AV system 200 </ b> B shown in FIG. 21 has an AV amplifier 300 connected between a disc player 210 and a television receiver 250. The disc player 210 and the AV amplifier 300 are connected via an HDMI cable 351. The AV amplifier 300 is provided with an HDMI terminal 301a to which an HDMI receiving unit (HDMITX) 302a is connected. One end of the HDMI cable 351 is connected to the HDMI terminal 211 of the disc player 210, and the other end of the HDMI cable 351 is connected to the HDMI terminal 301 a of the AV amplifier 300.

  The AV amplifier 300 and the television receiver 250 are connected via an HDMI cable 352. The AV amplifier 300 is provided with an HDMI terminal 301b to which an HDMI transmission unit (HDMI TX) 302b is connected. One end of the HDMI cable 352 is connected to the HDMI terminal 301 b of the AV amplifier 300, and the other end of the HDMI cable 352 is connected to the HDMI terminal 251 of the television receiver 250.

  In the AV system 200B shown in FIG. 21, uncompressed image data (video signal) from the disc player 210 is transmitted to the television receiver 250 via the HDMI cable 351, the AV amplifier 300, and the HDMI cable 352, and this television reception is performed. The machine 250 displays an image based on image data from the disc player 210. Uncompressed audio data (audio signal) from the disc player 210 is transmitted to the television receiver 250 via the HDMI cable 351, the AV amplifier 300, and the HDMI cable 352. The sound based on the sound data is output. Note that the audio may be output from a speaker group (not shown) attached to the AV amplifier 300 in accordance with a user's selection operation.

  When the image data sent from the disc player 210 to the television receiver 250 is stereoscopic image data (3D image data) including left-eye image data and right-eye image data for displaying a stereoscopic image, the television receiver 250 A stereoscopic image is displayed. The transmission method of stereoscopic image data from the disc player 210 to the television receiver 250 is the same as that of the AV system 200 shown in FIG. 1 (see FIGS. 9 to 12).

  As described above, there are two types of shooting timings for the left eye image data and the right eye image data reproduced by the disc player 210: simultaneous and alternating. In addition, there are two types of display timings of the left eye image and the right eye image displayed on the television receiver 250: simultaneous and alternating.

  In the AV system 200B shown in FIG. 21, the shooting timing of the left eye image data and right eye image data reproduced by the disc player 210 is different from the display timing of the left eye image and right eye image displayed by the television receiver 250. In this case, timing correction is performed by the AV amplifier 300. In this timing correction, the timing of the left eye image data and the right eye image data is matched with the display timing of the left eye image and the right eye image.

  Here, when the photographing timing and the display timing are different, there are the following two methods. One is a case where the left eye image data and the right eye image data are obtained by alternately photographing, and the left eye image and the right eye image are displayed at the same timing. The other one is obtained when the left eye image data and the right eye image data are obtained by photographing at the same timing, and the left eye image and the right eye image are alternately displayed.

[Configuration example of AV amplifier]
FIG. 22 shows a configuration example of the AV amplifier 300. The AV amplifier 300 includes HDMI terminals 301a and 301b, an HDMI receiving unit 302a, and an HDMI transmitting unit 302b. The AV amplifier 300 includes a video / graphic processing circuit 305, an audio processing circuit 307, an audio amplification circuit 308, and audio output terminals 309a to 309f. The AV amplifier 300 includes an internal bus 312, a CPU 313, a flash ROM 314, and a DRAM 315.

  The HDMI receiving unit 302a receives uncompressed video (image) and audio data supplied to the HDMI terminal 301a via the HDMI cable 351 by communication conforming to HDMI. Although detailed description is omitted, the HDMI receiving unit 302a has the same configuration as the HDMI receiving unit 252 in the television receiver 250 of the AV system 200 of FIG.

  The HDMI transmission unit 302b sends uncompressed video (image) and audio data from the HDMI terminal 301b to the HDMI cable 352 by communication conforming to HDMI. Although detailed description is omitted, the HDMI transmitting unit 302b has the same configuration as the HDMI transmitting unit 212 in the disc player 210 of the AV system 200 of FIG.

  The audio processing circuit 307 generates, for example, audio data of each channel for realizing 5.1ch surround with respect to the audio data obtained by the HDMI receiving unit 302a, a process of giving a predetermined sound field characteristic, Performs processing to convert digital signals to analog signals. The audio amplifier circuit 308 amplifies the audio signal of each channel output from the audio processing circuit 307 and outputs the amplified audio signal to the audio output terminals 309a to 319f.

  Further, the audio processing circuit 307 further supplies the audio data obtained by the HDMI receiving unit 302a to the HDMI transmitting unit 302b after performing necessary processing. In addition, the video / graphic processing circuit 305 subjects the video (image) data obtained by the HDMI receiving unit 302a to image conversion processing, graphics data superimposition processing, and the like as necessary, and the HDMI transmission unit 302b. To supply.

  The CPU 313 controls the operation of each unit of the AV amplifier 300. The flash ROM 314 stores control software and data. The DRAM 315 constitutes a work area for the CPU 313. The CPU 313 develops software and data read from the flash ROM 314 on the DRAM 315 to activate the software, and controls each unit of the AV amplifier 300. The CPU 313, flash ROM 314, and DRAM 315 are connected to the internal bus 312.

  The video / graphic processing circuit 305 performs processing (decoding processing) corresponding to the transmission method on the stereoscopic image data (3D image data) received by the HDMI receiving unit 302a, and thereby performs left-eye image data and right-eye image processing. Generate data. The video / graphic processing circuit 305 processes the processed stereoscopic image data (left-eye image data, right-eye image data) into a state corresponding to the transmission method (see FIGS. 9 to 12). , To the HDMI transmission unit 302b.

  Further, the video / graphic processing circuit 305 performs timing correction on the left eye image data and the right eye image data obtained by being received by the HDMI receiving unit 302a as necessary. In this case, the video / graphic processing circuit 305 constitutes a timing correction unit. Details of timing correction in the video / graphic processing circuit 305 will be described later.

  The operation of the AV amplifier 300 shown in FIG. 22 will be briefly described. The HDMI receiving unit 302a acquires video (image) data and audio data transmitted from the disc player 210 connected to the HDMI terminal 301a via the HDMI cable 351. The video data and audio data are supplied to the HDMI transmission unit 302b via the video / graphic processing circuit 305 and the audio processing circuit 307, respectively, and transmitted from the HDMI terminal 301b to the television receiver 250 via the HDMI cable 352. The As a result, the AV amplifier 300 exhibits a repeater function.

  When audio is output through the AV amplifier 300, the audio processing circuit 307 generates audio data of each channel for realizing 5.1ch surround with respect to the audio data obtained by the HDMI receiving unit 302a. Necessary processing such as processing, processing for imparting predetermined sound field characteristics, processing for converting a digital signal into an analog signal, and the like are performed. The audio signal of each channel is amplified by the audio amplifier circuit 308 and then output to the audio output terminals 319a to 319f.

"Timing correction process"
Timing correction processing in the video / graphic processing circuit 305 of the AV amplifier 300 will be described.

In this embodiment, the AV amplifier 300 acquires shooting timing information of left-eye image data and right-eye image data from the disc player 210 in the same manner as the television receiver 250 of the AV system 200 of FIG. . That is, the AV amplifier 300 extracts the AVI InfoFrame packet (see FIG. 17) including the shooting timing information (LR_Image_Timing) arranged in the blanking period of the stereoscopic image data received by the HDMI receiving unit 302b. , To acquire shooting timing information. In other words, the disc player 210 supplies the shooting timing information to the AV amplifier 300 by inserting it in the blanking period of the stereoscopic image data to be transmitted from the HDMI transmission unit 212.
Note that the shooting timing information is not only automatically acquired via HDMI as described above, but may be acquired by allowing the user to set (select) on the AV amplifier 300. Further, as described above, the photographing timing information may be configured to operate by assuming that the timings of the left eye image data and the right eye image data are the same without automatic acquisition or user setting.

In this embodiment, the AV amplifier 300 acquires display timing information of the left eye image and the right eye image from the television receiver 250 in the same manner as the disc player 210 of the AV system 200 of FIG. In other words, the AV amplifier 300 (CPU 313) reads the E-EDID (see FIGS. 13 and 14) including the display timing information (LR_Display_Timing) from the television receiver 250, thereby acquiring the display timing information. In other words, the television receiver 250 supplies the information to the AV amplifier 300 by including the display timing information in the E-EDID.
Note that the display timing information is not only automatically acquired via HDMI as described above, but may be acquired by setting (selecting) on the AV amplifier 300 by the user.

  The CPU 313 of the AV amplifier 300 recognizes the display timing of the left eye image and the right eye image in the television receiver 250 based on the display timing information included in the E-EDID as described above or the display timing information set by the user. To do. Further, the CPU 313 of the AV amplifier 300, as described above, uses the left eye image data and right eye image sent from the disc player 210 based on the shooting timing information included in the AVI InfoFrame packet or the timing information set by the user. Recognize data capture timing. Note that the CPU 313 of the AV amplifier 300 assumes that the timings of the left eye image data and the right eye image data are the same when there is no automatic acquisition of shooting timing information or user setting.

  When the shooting timing and the display timing are different, the CPU 313 controls the video / graphic processing circuit 305 to perform the timing correction process. By this timing correction processing, the timing of the left eye image data and the right eye image data reproduced by the BD / DVD drive 214 of the disc player 210 matches the display timing of the left eye image and the right eye image in the television receiver 250. To be.

  When the shooting timing and the display timing are different, there are the following two types. The first case is obtained by alternately capturing left eye image data and right eye image data, and the left eye image and the right eye image are displayed at the same timing. In the second case, the left eye image data and the right eye image data are obtained by being photographed at the same timing, and the left eye image and the right eye image are alternately displayed.

  The timing correction processing performed in the video / graphic processing circuit 305 in the first case is similar to the timing correction processing performed in the first case by the video signal processing circuit 217 of the disc player 210 in the AV system 200 shown in FIG. (See FIGS. 15A and 15B). In this case, the corrected timings of the left eye image data and the right eye image data are the same in each frame, and match the display timing of the left eye image and the right eye image.

  Further, the timing correction processing performed in the video / graphic processing circuit 305 in the second case is the timing correction processing performed in the second case by the video signal processing circuit 217 of the disc player 210 in the AV system 200 shown in FIG. (See FIGS. 16A and 16B). In this case, the corrected timing of the left eye image data and the right eye image data is alternated every 0.5 frame, and matches the display timing of the left eye image and the right eye image.

  As described above, in the AV system 200B shown in FIG. 21, the shooting timing of the left eye image data and right eye image data reproduced by the disc player 210, and the left eye image and right eye displayed by the television receiver 250 are displayed. When the image display timing is different, the AV amplifier 300 corrects the timing. Therefore, the timing of the left eye image data and the right eye image data received by the television receiver 250 matches the display timing of the left eye image and the right eye image in the television receiver 250. Therefore, the image quality can be improved with a moving image, and the viewer's fatigue can be reduced.

  In the AV system 200 shown in FIG. 21, the AV amplifier 300 obtains the display timing information of the left eye image and the right eye image from the television receiver 250, and the left eye image data and the right eye image data from the disc player 210. Shooting timing information is acquired. Based on these pieces of information, in the AV amplifier 300, the timing of the left eye image data and the right eye image data relayed from the disc player 210 to the television receiver 250 is determined based on the left eye image and the right eye image in the television receiver 250. The display timing is automatically adjusted. Therefore, there is no increase in the user's operation time, and accurate timing adjustment is always possible because there is no erroneous operation or setting by the user.

  Even when the AV amplifier 300 is interposed between the disc player 210 and the television receiver 250 as in the AV system 200B of FIG. 21, the disc player is similar to the AV system 200 of FIG. 210 or the television receiver 250 can also perform timing correction. In that case, the disc player 210 acquires the display timing information of the left eye image and the right eye image from the television receiver 250 via the AV amplifier 300. Further, the television receiver 250 acquires shooting timing information from the disc player 210 via the AV amplifier 300.

  For example, in a configuration like the AV system 200B in FIG. 21, a case where both the AV amplifier 300 and the television receiver 250 have a timing correction function can be considered. In this case, when timing correction is performed by the AV amplifier 300 as described above, the display timing information in the television receiver 250 is set as shooting timing information supplied from the AV amplifier 300 to the television receiver 250. The correction process on the television receiver 250 side can be invalidated. Thereby, it is possible to prevent the inconvenience that the timing correction processing is performed twice on the left eye image data and the right eye image data.

<4. Modification>
In the above-described embodiment, an HDMI transmission path is used. However, the present invention provides a transmission path for uncompressed video signals other than HDMI, for example, a DVI (Digital Visual Interface), DP (Display Port) interface, wireless transmission, and a Gigabit Ethernet / optical fiber transmission path that is expected to become more popular in the future. The same applies to what is used.

  For example, in the case of DVI, a standard for storing a corresponding image format (resolution, frame rate, etc.) of a video signal in an area called E-EDID possessed by the receiving apparatus is defined, as in the above-described HDMI. Therefore, in the case of this DVI, as in the case of the HDMI described above, the transmission device acquires display timing information of the left eye image and the right eye image from the E-EDID of the reception device using DDC (Display Data Channel). it can. Therefore, the transmission device can correct or generate the left eye image data and the right eye image data so as to match the display timing of the left eye image and the right eye image on the reception device side.

  In the above-described embodiment, the disc player 210, the game machine 400, and the AV amplifier 300 obtain the display timing information of the left eye image and the right eye image by reading the E-EDID from the television receiver 250. Indicated. In the above-described embodiment, the television receiver 250 and the AV amplifier 300 extract the left-eye image data and the right-eye by extracting the AVI InfoFrame packet arranged in the vertical blanking period of the received stereoscopic image data. The thing which obtains photographing timing information of image data was shown.

  However, the means by which each device acquires these information is not limited to this. For example, such information may be acquired by performing communication using a CEC line which is a control data line of the HDMI cable. In addition, for example, each device may acquire such information by communication using a bidirectional communication path configured using a predetermined line (for example, a reserved line or an HPD line) of the HDMI cable described above.

  In the above-described embodiment, an example is shown in which the transmission device is the disc player 210 and the game machine 400, the relay device is the AV amplifier 300, and the reception device is the television receiver 250. However, the transmission device, the relay device, and the reception device are not limited to these. For example, the transmission device may be a DVD recorder, a set-top box, or other AV sources in addition to the disc player 210 and the game machine 400. In addition to the television receiver 250, the receiving device may be a projector, a PC monitor, or other display.

  The present invention can improve the image quality of a moving image and reduce the viewer's fatigue without increasing the user's operation or setting effort, and transmits stereoscopic image data from a transmission device. The present invention can be applied to an AV system that displays a left eye image and a right eye image on the side and provides a viewer with a stereoscopic image.

  200, 200A, 100B ... AV system, 210 ... disc player, 211 ... HDMI terminal, 212 ... HDMI transmitter, 214 ... BD / DVD drive, 217 ... video processing circuit, 221 ... CPU, 250 ... TV receiver, 251 ... HDMI terminal, 252 ... HDMI receiver, 254 ... 3D signal processor, 262 ... display panel, 271 ... CPU , 300... AV amplifier, 301a, 301b... HDMI terminal, 302a... HDMI receiving unit, 302b... HDMI transmitting unit, 305... Video / graphic processing circuit, 313. 351, 352 ... HDMI cable, 400 ... game machine, 401 ... HDMI terminal, 402 ... HDMI transmitter, 97 ... control pad, 409 ... DVD / BD drive, 411 ··· CPU, 414 ··· drawing processing section, 415 ... VRAM

This invention relates to a receiving apparatus and an information processing method, in particular, it relates to a receiving apparatus that handle the left-eye image data and right bank image data for displaying a stereoscopic image.

The concept of this invention is
A data processing unit that processes stereoscopic image data including left-eye image data and right-eye image data for displaying a stereoscopic image to obtain the left-eye image data and the right-eye image data;
To fit the display timing of the left-eye image and a right-eye image, and a control unit for controlling the timing of the left eye image data and the right-eye image data obtained by the data processing unit,
In the receiving apparatus comprising a display unit for displaying the right-eye image by the right eye image data left-eye image and the timing is controlled by the left-eye image data in which the timing is controlled.

In the present invention, the data processing unit processes the stereoscopic image data including the left eye image data and the right eye image data for displaying the stereoscopic image, thereby obtaining the left eye image data and the right eye image data. The control unit, to fit the display timing of the left-eye image and a right-eye image, the timing of the left eye image data and right eye image data obtained by the data processing unit is controlled. Then, the display unit displays an image based on the left-eye image data and the right-eye image data adjusted in timing. Thereby, it becomes possible to display a stereoscopic image satisfactorily.

Claims (1)

A data processing unit that processes stereoscopic image data including left-eye image data and right-eye image data for displaying a stereoscopic image to obtain the left-eye image data and the right-eye image data;
A control unit for controlling the timing of the left eye image data and the right eye image data obtained by the data processing unit so as to match the display timing of the stereoscopic image;
A receiving apparatus comprising: a display unit configured to display an image based on left-eye image data whose timing is controlled by the control unit and the right-eye image data.

Images