JP2008060801A - Video playback device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide comfortable viewing environment without requiring complicated operations when a viewer performs instructions such as fast forward, fast rewind and skip. <P>SOLUTION: A main screen processing part 211 converts data corresponding to a main screen, decoded by a first decoder 201 into data for main screen display and outputs it as the main screen. A sub-screen processing part 212 reduces data in the future or the past by predetermined time corresponding to a sub-screen, decoded by a second decoder 202, converts the data into data for sub-screen display and outputs it as a sub-screen. Thus, when the viewer performs instructions such as the fast forward, first rewind and skip, video images in the future or the past are simultaneously displayed on the sub-screen for predetermined time as well as the main screen for viewing the video images. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a video playback device that plays back video (including audio).

  2. Description of the Related Art Conventionally, efforts have been made to efficiently view content such as programs in video playback apparatuses that display video such as television broadcast receivers (see, for example, Patent Document 1 and Patent Document 2). . The prior art discloses a technique that allows a plurality of programs to be displayed on one screen at a time and the layout of the screen to be freely set. Further, in video editing, a technique has been proposed for efficiently performing editing work by displaying the future video, the current video, and the past video at the same time by delaying the real time by a certain time (for example, (See Patent Document 3).

  However, the above-described prior art aims at facilitating viewing of a plurality of programs and reducing work related to video editing, and shortens time for recorded video (including audio). The function of improving the environment of fast-forwarding or rewinding a scene that the viewer does not need to see for efficient viewing, or skipping to a scene after tens of seconds instantaneously and playing it Not disclosed.

  By the way, in recent years, a device for recording and reproducing a moving image such as a television broadcast on a recording medium such as a hard disk (HDD), a digital multi-purpose disk (DVD), a Blu-ray disc (BD), or a semiconductor memory represented by a flash memory. Is spreading. In these devices, in order to shorten the time and to view efficiently, the scene that the viewer determines that it is not necessary to watch is fast-forwarded, or after 10 seconds instantaneously, such as skipping 10 seconds ahead, for example. It has a function of playing back the scene as it is.

  FIG. 28 is a block diagram showing a configuration of a conventional video reproduction apparatus. When recording content, the broadcast wave received by the antenna 240 is converted into encoded data by the digital tuner 200 and written into the memory 203 via the main bus 241. The encoded data is read by the recording controller 206, converted into a format to be recorded on the recording medium 205, and recorded on the recording medium 205.

  When playing back the content recorded on the recording medium 205, the recording controller 206 reads the data on the recording medium 205, converts it into encoded data that can be processed by the decoder 1401, and writes it into the memory 203. The encoded data is read by the decoder 1401, decoded and written in the memory 203. The decrypted data is read by a graphic processing unit (hereinafter referred to as GPU) 207, converted into display data by a screen processing unit in the GPU 207, and displayed on the display device 208.

  If the video playback device is a television broadcast recording / playback device such as a video recorder or a DVD player, the display device 208 is connected via video output terminals such as an HDMI terminal, a D terminal, and an S terminal. In the case of a television display, it is a display panel that the device itself has. The control unit 204 controls these overall operations. In addition, the video reproduction apparatus includes a remote control signal processing unit 220, and the control unit 204 controls each unit according to a signal indicating a viewer instruction received by the remote control light receiving unit 209.

  Here, control when the forward skip button is pressed during playback / viewing will be described with reference to FIGS. 28 and 29 to 32. 29 to 32 are flowcharts for explaining the operation of the conventional video reproduction apparatus. First, the remote control light receiving unit 209 receives a forward skip signal and transmits this signal to the control unit 204 via the main bus 241. When the remote control signal processing unit 220 in the control unit 204 interprets the signal and determines that it is a forward skip signal in step S1a in FIG. 29, the process proceeds to step S2a to generate a forward skip control signal and transmit it to each unit. .

  When the recording controller 206 reading the encoded moving image data stored in the recording medium 205 and writing it into the memory 203 receives the forward skip control signal issued by the control unit 204 in step S1b of FIG. Proceeding to S2b, the time position is changed by the forward skip time from the time position where the address of the recording medium 205 is currently read. Subsequently, the data read from the recording medium 205 is written into the memory 203.

  The decoder 1401 reads and decodes the encoded moving image data in the memory 203 and writes the result into the memory 203. At this time, when the forward skip control signal is received in step S1c of FIG. 31, the address when the recording controller 206 writes to the memory 203 is changed as described above. In S2c, the read memory address is changed. Then, the encoded moving image data is continuously read from the memory 203 and decoded, and the result is written to the memory 203.

  At this time, the decoder 1401 always writes the memory addresses in a predetermined order regardless of the presence or absence of the forward skip control signal. That is, address changes are absorbed here.

  The GPU 207 sequentially reads out the results decoded by the decoder 1401 from the memory 203 and converts them into data to be displayed on the display device 208. The GPU 207 reads the decoding results written in the memory 203 in order regardless of the presence or absence of the forward skip control signal, and outputs the conversion results to the display device 208. This point is conceptually shown in FIG.

  In this way, the user can instantaneously move the time position of the video being viewed forward by pressing the forward skip button on the remote control. Here, the forward skip has been described as an example, but the same method is used when the backward skip button on the remote control is pressed. Furthermore, even in the case of fast-forwarding, a fast-forwarding operation can be realized by causing the control unit 204 to generate a plurality of forward skip control signals by pressing a fast-forwarding button once. At this time, if the forward skip time is lengthened, fast-forwarding with a faster moving speed is achieved, and if it is shortened, slower fast-forwarding is achieved. Of course, the same applies to fast rewinding.

  Next, FIG. 33 to FIG. 38 are conceptual diagrams for explaining the video playback operation by the conventional video playback apparatus. 33 to 38 show the content on the time axis. The left shows the past, and the right shows the future. For convenience of explanation, the left end is used as a reference. The time zones 300 and 302 are time zones of a desired scene that the viewer wants to see. In this example, when the time reference point is set to 0 seconds for convenience, they are 0 to 10 seconds and 25 to 35 seconds. The time zone 301 is a time zone of an undesired scene that the viewer does not want to see. In this example, the time zone 301 is 10 to 25 seconds. As a specific example, the time zone 300 is a movie program, the time zone 301 is an undesired video, and the time zone 302 is a news program. The time position 303 indicates the scene currently being viewed, and the viewer is viewing the desired scene.

  FIG. 34 shows the state after 5 seconds of FIG. At the time position 401, an undesired scene is displayed. Here, the viewer presses the forward skip button on the remote controller for efficient viewing. As a result, the forward skip of 10 seconds is performed, and the state shown in FIG. 35 is obtained.

  In FIG. 35, the display scene is the time position 501 and an undesired scene is still displayed. If it waits for 3 seconds, it becomes a desired scene, but the viewer does not know the destination, so again performs forward skipping for 10 seconds. As a result, the state shown in FIG. 36 is obtained.

  In FIG. 36, the display scene is the time position 601 and the desired scene is displayed. However, the viewer notices that although it is a desired scene, it skipped forward for the second time, and thus there is clearly a lot of time that he / she has not watched. Here, the scene is 25 seconds to 32 seconds. Therefore, the viewer presses the backward skip button. As a result, it moves 5 seconds ago and enters the state shown in FIG.

In FIG. 37, the display scene is the time position 701, and the desired scene is displayed. However, the viewer notices that there is time that is a desired scene but has not yet been viewed. Here, the scene is 25 to 27 seconds. At this point, the viewer finally recognizes that the desired scene has started if he waits for a time of 5 seconds or less in the state shown in FIG. Therefore, the viewer presses the backward skip button again. As a result, it moves 5 seconds ago and enters the state shown in FIG. Here, if the viewer already waits for 5 seconds or less, the viewer knows that the desired scene will start, so the viewer will wait. As a result, the desired scene begins after 3 seconds.
JP 2003-101893 A JP 2003-101900 A JP-A-4-3384

  As described above, in the prior art, when the viewer enters the state shown in FIG. 35, the forward state of the video is not known, and thus the forward skip button is further pressed. Therefore, in this case, in order to obtain the state shown in FIG. 35 or FIG. 38, it is necessary to perform an operation of pressing the backward skip button twice.

  Even in the prior art, it is possible to reduce the operation of pressing the button by changing the movement time of the forward skip button and the backward skip button. For example, in this case, by setting the backward skip button 10 seconds before, the state shown in FIG. 38 is obtained by pressing the backward skip button only once from the state shown in FIG. However, in this case, it is sufficient to wait for 3 seconds, but in some cases, it may be necessary to wait for 9 seconds. In other words, the movement time and waiting time of the forward skip button or backward skip button are in a trade-off relationship, so in terms of comfort, only the difference in whether the number of button presses increases or the waiting time increases. It is not a fundamental solution.

  The above-mentioned problem is caused by the fact that the viewer cannot recognize how many seconds later the desired scene will start. Here, in the state shown in FIG. 35, if the viewer can know the previous state to some extent, it is to determine whether the viewer should press the forward skip button or wait without pressing. It becomes the material of. Thereby, useless actions can be reduced, resulting in increased comfort.

  There is a similar problem with fast forward or fast reverse. Conventional devices can perform fast-forward and fast-rewind operations such as 10 times and 30 times while displaying content images. However, even if the viewer wants to watch the video and return to playback during high-speed fast-forwarding while displaying the video, for example, even if the playback button is pressed, the viewer's intended time Often it goes too far beyond the position. In this case, the viewer has to perform an operation of watching the image as it is, or quickly returning to the intended time position by rewinding the portion that has been excessively advanced. This problem is also due to the fact that there is no material that allows the viewer to determine how long the scene that he wants to see will begin later.

  Thus, in the above-described prior art, if fast-forwarding, the fast-forward speed is too fast, or if skipping for 10 seconds, the skipped 10-second scene cannot be seen. The scene goes ahead of the viewer's request. The same applies to fast reverse. In such a case, the viewer must bother to fast-rewind or fast-forward in order to return to the scene he / she wants to see, and these operations often feel troublesome for the viewer. There is.

  In other words, when the viewer instructs the device of the present invention to perform the next operation, this problem is unavoidable because the previous state is unknown because there is no material for the determination. Due to not.

  The present invention has been made in view of such circumstances, and its purpose is to ensure that the next instruction is given when the viewer gives an instruction such as fast forward, fast reverse, or skip in the video playback apparatus. By providing information that can be held, it is possible to provide a comfortable viewing environment without forcing a cumbersome task of moving forward beyond the scene requested by the viewer or returning to the original position again. Is to provide.

  In order to solve the above-described problem, the video playback apparatus of the present invention is instructed in one of the playback modes of fast forward playback, fast reverse playback, or normal playback, the content, and the time position. A plurality of reproduction means for reproducing and generating video; and a reproduction control means for instructing the reproduction means, a content to be reproduced, and a time position based on a signal instructing fast-forward reproduction or fast-reverse reproduction; Screen control means for generating a screen for displaying each of the videos generated by the plurality of playback means.

  The present invention is characterized in that, in the above invention, the reproduction control means designates different time positions of the same content for each of the reproduction means.

  In order to solve the above-described problem, the video playback apparatus of the present invention is directed to a content and a time position, plays back the content according to the command, and generates a video, and forward skip. Alternatively, a playback control unit that instructs the playback unit to play back the content at a time position calculated based on a signal that instructs backward skip and a screen that displays each of the videos generated by the plurality of playback units are generated. And a screen control means.

  The present invention is characterized in that, in the above invention, the reproduction control means designates different time positions of the same content for each of the reproduction means.

  According to the present invention, in the above invention, the screen control means sets the distance between the screens to a distance corresponding to a time difference between time positions corresponding to images displayed on the screen.

  According to the present invention, in the above invention, the screen control means sets the difference or ratio of the display areas between the screens to a value corresponding to the time difference between the time positions corresponding to the images displayed on the screen. Features.

  The present invention is characterized in that in the above-mentioned invention, an operation means for inputting an operation instruction is provided, and the screen control means changes a display area of the screen based on an instruction from the operation means.

  The present invention, in the above invention, comprises a time axis bar generating means for generating an image with a time axis bar and an image marked with a position representing the time position being reproduced by each reproducing means of the time axis bar, The screen control means generates a screen for displaying the image generated by the time axis bar generation means.

  According to the present invention, in the above invention, the time axis bar generating means changes a position where the mark is attached to the time axis bar based on an instruction by a user operation, and the reproduction control means is the time axis bar generating means. The reproduction means corresponding to the mark whose position is changed is instructed to reproduce the time position corresponding to the position changed by the time axis bar generation means.

  The present invention is characterized in that, in the above invention, the screen control means changes a display area of the screen corresponding to the mark according to the position of the mark on the time axis bar.

  The present invention is characterized in that, in the above invention, the time-axis bar generating means generates an image representing a correspondence relationship between the mark and the screen.

  According to the present invention, in the above invention, the image control unit displays different images on a screen of a video to be instructed by the user operation and other screens among the video displayed on the screen. It is characterized by.

  The present invention is the above invention, wherein the time-axis bar generating means is different between a mark corresponding to a video to be instructed by the user operation and other marks among the videos displayed on the screen. It is characterized by display.

  According to the present invention, in the above invention, the playback control unit changes a time difference between the playback units at a time position instructed to the playback unit in accordance with a speed of the fast forward playback or fast reverse playback. It is characterized by.

  According to the present invention, in the above invention, when the reproduction control unit receives the instruction, the reproduction control unit instructs the reproduction unit reproducing the content to perform reproduction in an operation mode according to the instruction. The reproduction means different from the reproduction means is instructed to reproduce the content at the time position calculated based on the time position being reproduced by the means and the received instruction.

  According to the present invention, in the above invention, when the playback control unit receives an instruction to end fast-forward playback or fast-rewind playback by a user operation, the calculation is performed when the instruction to fast-forward playback or fast-rewind playback is received. The reproduction means instructing the reproduction at the time position is instructed to stop the reproduction.

  According to the present invention, in the above invention, when the playback control unit receives the instruction, the playback control unit instructs the playback unit that is playing back content at a time position calculated according to the instruction. The reproduction unit different from the reproduction unit is instructed to reproduce the content at the time position calculated based on the time position reproduced by the reproduction unit and the received instruction.

  According to the present invention, in the above invention, when the predetermined time has elapsed after the instruction is received, the reproduction control unit is configured to perform the calculation at the time position calculated when the forward skip instruction or the backward skip instruction is received. The reproduction means that instructed the reproduction is instructed to stop the reproduction.

  The present invention is characterized in that, in the above invention, the reproduction control means makes the difference in time position instructed to each reproduction means equal to the time to skip by forward skip or backward skip.

  According to the present invention, in the video playback device, when the viewer performs fast forward, fast reverse, or skip, the user is forced to perform troublesome operations such as returning to the original position again by proceeding too far from the position desired by the viewer. A comfortable viewing environment can be provided.

  Hereinafter, an embodiment of the present invention will be described with reference to the drawings.

  FIG. 1 is an external view showing a video playback system using a video playback device according to an embodiment of the present invention. Reference numeral 2000 denotes a television receiver having a display device 1002, a left speaker SL, a right speaker SR, and a table D, to which a video reproduction device 2001 of this embodiment is connected. The video reproduction apparatus 2001 has a media insertion slot E into which a recording medium such as a DVD-R (Digital Versatile Disk Recordable) is inserted, and outputs video / audio recorded on the recording medium to the television receiver 2000. Yes. Reference numeral 2002 denotes a remote control signal light receiving unit. Here, for convenience of explanation, the television receiver 2000 and the video reproduction device 2001 are separated from each other, but the video reproduction device 2001 may be incorporated in the television receiver 2000. Reference numeral 2003 denotes a display image of content on the television receiver 2000.

  In the present embodiment, the content is defined as follows. That is, one content is video / sound that is played back continuously in time, such as CM-program-CM, and the unit is determined by the provider for the viewer. And Therefore, video / audio other than the main program such as CM is also included in the main program.

  Next, FIG. 2 is an external view showing an example of an operation unit and a light emitting unit of a remote controller for operating the video reproduction apparatus according to the present embodiment. The remote controller 100 is a controller that remotely operates a remote device using wireless communication technology regardless of infrared or radio waves. When the backward skip button 101 is pressed once, it is instantaneously moved to a past scene for display only during a preset backward skip time (in this example, 5 seconds) of the currently viewed content. It is a button for. The backward skip time is a value that can be reset later by the user.

  When the forward skip button 102 is pressed once, it is instantaneously moved to a future scene and displayed only for a preset forward skip time (in this example, 10 seconds) of the currently viewed content. It is a button for. The forward skip time is a value that can be reset later by the user. The playback button 103 is a button for instructing the start of content playback. The fast-reverse button 104 is a button for causing the content to be fast-rewinded when pressed during content playback. The fast-forward button 105 is a button for causing the content to be fast-forwarded when pressed during content reproduction. The pause button 106 is a button for temporarily stopping the current operation. The stop button 107 is a button for stopping the operation. The remote control signal light emitting unit 108 emits and transmits the operation state of each button as a remote control signal using infrared rays, for example. The sub-screen on / off button 109 is a button for causing the sub-screen 1001 (FIG. 3) to appear when pressed once, and erasing the sub-screen 1001 and returning to the original screen when pressed again. .

  Next, FIG. 3 is a schematic diagram for explaining a display method by the video reproduction apparatus according to the present embodiment. The video reproduction apparatus 2001 (FIG. 1) according to the present embodiment displays a scene at a certain time position on the main screen 1000 in the display apparatus 1002 on the television receiver 2000, and the main screen 1000 on the sub screen 1001. Simultaneously display a scene that is 10 seconds from the time position. Both are moving images, and the audio of the sub screen 1001 is not output. The sub screen 1001 may be a still image as long as it can be determined whether the scene is a desired scene or an undesired scene. Here, the screen that is the largest of the displayed screens and that provides the viewer with the main viewing video is called the main screen, which is smaller than the main screen to assist viewing on the main screen. The displayed screen is called a sub screen.

  Next, FIG. 4 is a block diagram showing the configuration of the video reproduction apparatus according to the present embodiment. In the figure, a video reproduction apparatus 2001 according to the present embodiment includes a plurality of decoders 201 and 202, a control unit 204, and a GPU 207. The first decoder 201 (reproducing means) is responsible for decoding the main screen, and the second decoder 202 (reproducing means) decodes the sub-screen. The reverse is also acceptable. Also, here, for convenience, two decoders are shown, but a decoder capable of decoding two or more encoded data, or a CPU (central processing unit), DSP (processing unit specialized for video processing) Or a combination of a single decoder and a CPU capable of decoding. That is, it is sufficient that two or more encoded data can be decoded as a device.

  The control unit 204 controls the entire video reproduction apparatus 2001, and includes a remote control signal processing unit 220, a display instruction unit 1403, a timer 1404, and a time axis bar drawing unit 1405. The remote control signal processing unit 220 controls each unit in accordance with a signal indicating the viewer's instruction received by the remote control light receiving unit 209. The display instruction unit 1403 generates a multi-screen signal and transmits it to each unit. When the count in the timer 1404 has elapsed for a predetermined multi-screen time, it generates a single-screen signal and transmits it to each unit. The timer 1404 measures the switching time from the multi-screen to the single screen. The time axis bar drawing unit 1405 draws an image of the time axis bar, details of which will be described later.

The memory 203 includes a nonvolatile memory such as a flash memory, a memory that can only be read such as a ROM (Read Only Memory), a volatile memory such as a RAM (Random Access Memory), or a combination thereof. The Reference numeral 205 denotes a readable / writable recording medium such as an HDD (hard disk) or a DVD-R (Digital Versatile Disk Recordable) in which moving image encoded data is recorded. Reference numeral 206 denotes a recording controller that writes data to the recording medium 205 and reads data from the recording medium 205.
The GPU 207 includes a main screen processing unit 211, a sub screen processing unit 212, a display position control unit 213, and a special effect generation unit 214. The main screen processing unit 211 converts the data corresponding to the main screen decoded by the first decoder 201 into main screen display data, and outputs the data to the display device 208 as the main screen 1000 (FIG. 3).

The sub-screen processing unit 212 reduces the data corresponding to the sub-screen decoded by the second decoder 202, converts it into sub-screen display data, and outputs it to the display device 208 as the sub-screen 1001 (FIG. 3). As shown in FIG. 3, the display position control unit 213 controls the display positions of the main screen and the sub screen. The special effect generating unit 214 performs a technique / calculation such as overlay processing, semi-transparency processing, or alpha blending (superimposing a translucent image and another image) when displaying the main screen and the sub-screen. . In the present embodiment, the control unit 204 and the GPU 207 constitute a reproduction control unit, and the decoders 201 and 202 and the recording controller 206 constitute a reproduction unit.
Reference numeral 208 denotes a display device such as a television display connected to the outside via a video output terminal such as an HDMI terminal, D terminal, or S terminal. A remote control light receiving unit 209 receives a remote control signal using infrared rays or the like. An antenna 240 is connected to the outside and inputs a received broadcast signal to the digital tuner 200. The digital tuner 200 converts the broadcast signal input from the antenna 240 into encoded data. Reference numeral 241 denotes a main bus that connects the components constituting the video playback apparatus 2001.

  Next, a method for reproducing content recorded on the recording medium 205 by the video reproduction apparatus 2001 according to the present embodiment will be described. Here, FIG. 5 is a conceptual diagram showing content on a time axis. The left shows the past, and the right shows the future. The time position 901 is a scene displayed on the main screen 1000, and the time position 902 is a scene displayed on the sub screen 1001, which is 10 seconds later than the time position 901. The time position 903 is 10 seconds past the time position 901. The time position 904 is 100 seconds past the time position 901. The time position 905 is 100 seconds later than the time position 901.

  First, the recording controller (reproducing means) 206 reads data corresponding to the time position 901 of the recording medium 205 and converts it into encoded data processed by the first decoder 201 for display on the main screen 1000. And write to the memory 203. The first decoder 201 reads the encoded data, decodes it, and writes it in the memory 203. The GPU 207 reads the decrypted data from the memory 203, and the main screen processing unit 211 in the GPU 207 converts the data into main screen display data and displays it as the main screen 1000 on the display device 208.

  At the same time, the recording controller 206 reads the data corresponding to the time position 902 of the recording medium 205 and converts it into encoded data processed by the second decoder 202 for display on the sub-screen 1001. Write to memory 203. The second decoder 202 reads the encoded data, decodes it, and writes it in the memory 203. The GPU 207 reads the decrypted data from the memory 203, and the sub-screen processing unit 212 in the GPU 207 performs reduction processing to convert the data into sub-screen display data, and displays the sub-screen 1001 on the display device 208.

  Next, an operation when the forward skip button 102 is pressed during playback / viewing by the video playback device 2001 according to the present embodiment will be described. 6 to 10 are flowcharts for explaining the operation when the forward skip button 102 is pressed during playback / viewing.

  First, when the forward skip button 102 is pressed on the remote controller 100 during playback / viewing, the remote control light receiving unit 209 of the video playback apparatus 2001 receives the forward skip signal and transmits it to the control unit 204. When the remote control signal processing unit 220 in the control unit 204 interprets the signal and determines that it is a forward skip signal in step S10 in FIG. 6, the process proceeds to step S11, and the display instruction unit 1403 displays the main screen 1000 and the sub screen signal. A multi-screen signal indicating the encoded moving image data to be displayed on the screen 1001 and the time position is generated and transmitted to each unit. Next, in step S12, when a predetermined multi-screen time elapses after the count in the timer 1404 generates the multi-screen signal, the display instruction unit 1403 generates a single-screen signal in step S13. And tell each department. The multi-screen holding time is a value that can be set later by the user.

  When the recording controller 206 that reads the encoded moving image data stored in the recording medium 205 and writes it into the memory 203 receives the multi-screen signal issued by the control unit 204 in step S20 of FIG. In order to perform parallel processing for the screen 1000 and the sub screen 1001, the process proceeds to step S21 (for the main screen 1000) and step S22 and subsequent steps (for the sub screen 1001).

  First, as processing for the main screen 1000, in step S21, the address of the recording medium 205 is changed by the forward skip time from the currently read time position. Subsequently, the data read from the recording medium 205 is written into the memory 203. On the other hand, in the process for the sub screen 1001, the encoded moving image data for the sub screen 1001 starts to be read from the recording medium 205 in step S22. The read data is written into the memory 203. In step S23, when a single image signal is received from the control unit 204, the process proceeds to step S24, and reading of data for the sub screen 1001 is terminated.

  Note that the processing for the main screen 1000 and the processing for the sub screen 1001 are not performed at all exactly at the same time, but are performed alternately in a very short time, but here, in a broad sense, parallel processing or simultaneous processing is performed. It expresses. Further, in the case of a device having a plurality of pairs of the recording controller 206 and the recording medium 205, they can be performed at the same time. Furthermore, although the case where there is one sub-screen 1001 is described here, as shown in FIG. 19 to be described later, when there are a plurality of sub-screens, the same number of sub-screen processes are processed in parallel. It will be.

  Next, decoding will be described. For decoding, parallel processing is performed by a plurality of decoders. Here, the description will be made assuming that the first decoder 201 decodes the video for the main screen 1000 and the second decoder 202 decodes the video for the sub-screen 1001.

  First, the first decoder 201 reads and decodes the encoded moving image data written in the memory 203 by the recording controller 206 for the playback / viewing video, and writes the result in the memory 203. When the first decoder 201 receives the multi-screen signal in step S30 of FIG. 8, the address to be written to the memory 203 is changed by the recording controller 206, so that it is changed in step S31 to correspond to it. The read memory address is used as the read memory address. Subsequently, the encoded moving image data is read from the memory 203 and decoding is continued, and the result is written to the memory 203. Here, the first decoder 201 does not change the memory address to which the decoding result is written before and after receiving the multi-screen signal, and increments the writing memory address as determined in advance.

  When the second decoder 202 receives the multi-screen signal from the control unit 204 in step S40 in FIG. 9, the process proceeds to step S41, and the encoded data written in the memory 203 for the sub-screen 1001 by the recording controller 206. Is started, decoding is started, and the decoding result is written in the memory 203. Thereafter, when a single screen signal is received from the control unit 204 in step S42, the process proceeds to step S43, and the decoding ends.

  The GPU 207 sequentially reads out the results decoded by the first decoder 201 for playback / viewing from the memory 203 and converts them into data to be displayed on the display device 208. Here, when the GPU 207 receives the multi-screen signal in step S50, the process proceeds to step S51 in FIG. 10 to perform multi-screen processing.

  The multi-screen processing is processing for displaying a plurality of contents (two in the illustrated example) in the display device 1002, as shown in FIG. Specifically, the GPU 207 reads out the decoding results written in the memory 203 by the first decoder 201 and the second decoder 202, respectively. Among them, the main screen processing unit 211 performs main screen data, and the sub screen processing unit 212 performs display processing and enlargement / reduction processing for sub screen data. Then, the display position control unit 213 performs display position processing on both of the data so that the data is displayed at a predetermined position, and finally processes the data to be displayed like the display device 1002 shown in FIG. To do. Further, when a plurality of sub-screens are required, the same number of sub-screen processing units may be provided in the GPU 207.

  Next, when a single screen signal is received from the control unit 204 in step S52 of FIG. 10, the process proceeds to step S53, and single screen processing is performed. The single screen processing is processing for stopping processing for the sub screen 1001 and returning to a state before displaying a plurality of screens (general display state). That is, the control unit 204 instructs the second decoder 202 to stop reproduction, and the second decoder 202 that has received the instruction stops reproduction. Since the video is not output when the second decoder 202 stops reproduction, the sub-screen processing unit 212 stops the display of the sub-screen 1001. In this way, the user can instantaneously move the time position of the image being viewed forward by pressing the forward skip button 102, and moreover, the multi-screen holding time, for example, only 2 seconds Since the sub screen 1001 is displayed, the viewer can check the situation by looking at the sub screen 1001 and determine whether or not to skip forward again.

  Here, the forward skip has been described as an example, but the same method is used when the backward skip button 101 is pressed. Further, even in the case of fast-forwarding, the display instruction unit 1403 of the control unit 204 generates a multi-screen signal only while the fast-forward button 105 is pressed, and generates a single-screen signal when the pressing is stopped. By doing so, a multi-screen display can be realized in the same manner during the fast-forward operation. Of course, the same applies to fast rewinding. Here, at the time of fast-forwarding, the display instruction unit 1403 generates a multi-screen signal including a signal for instructing the decoders 201 and 202 and the recording controller 206 so that the operation mode is fast-forward playback, and the decoder 201 that has received this signal , 202 and the recording controller 206 perform fast-forward playback by a method of thinning out moving image encoded data or processing at a higher processing speed. The multi-screen signal generated at the time of fast return also includes a signal for instructing the operation mode to be fast return playback.

  Next, the operation of the video reproduction apparatus according to the above-described embodiment will be described more specifically. Here, FIG. 11 to FIG. 13 are conceptual diagrams for explaining the operation of video playback by the video playback device of the present embodiment. 11 to 13 show the content on the time axis.

  In FIG. 11, a time position 1100 indicates a scene currently viewed on the main screen 1000, and the viewer is viewing a desired scene. At the same time, the time position 1101 indicates the scene currently displayed on the sub screen 1001. In this state, although the desired scene is displayed on the main screen 1000, the viewer recognizes that the undesired scene will be displayed soon because the undesired scene is displayed on the sub-screen 1001.

  FIG. 12 shows a state after 5 seconds from the state shown in FIG. On the main screen 1000 and the sub screen 1001, undesired scenes at time positions 1200 and 1201 are displayed, respectively. Here, the viewer presses the forward skip button 102 of the remote controller for efficient viewing. As a result, the forward skip of 10 seconds is performed, and the state shown in FIG. 13 is obtained.

  In FIG. 13, the main screen 1000 and the sub screen 1001 display scenes at time positions 1300 and 1301, respectively. The main screen 1000 displays an undesired scene and the sub screen 1001 displays a desired scene. Here, although the undesired scene is displayed on the main screen 1000, the viewer can recognize that the scene displayed on the sub screen 1001 is the desired scene. You can choose to wait without skipping.

  According to this example, when the method of the prior art is compared with the method of the present embodiment, the viewer recognizes that the desired scene starts if the user waits a little more without performing the forward skip operation (prior art: FIG. 38, this Invention: Up to FIG. 13), in the prior art, the button is pressed four times, whereas in the present embodiment, it is once. Furthermore, since the act of pressing the last two buttons in the prior art is an action that is performed to return to the previous situation, there is a high possibility of having discomfort. In this embodiment, there is little action to press the button, and the above-described discomfort is released.

  Here, the value of the time position difference between the video displayed on the sub screen 1001 and the video displayed on the main screen 1000 matches the value of the time skipped when the forward skip button 102 is pressed. Is desirable. That is, when the forward skip button 102 is pressed, the display instruction unit 1403 generates a multi-screen signal in which the time position difference between the designated screens matches the skip time value. The reason is that, for the viewer, when the forward skip is performed, the next video displayed on the main screen 1000 can be confirmed on the sub screen 1001 in advance. By making both values the same, when the viewer presses the forward skip button 102, the video on the sub screen 1001 appears to have moved to the main screen 1000 instantaneously. However, since it is convenient for the viewer to decide which value is convenient, it is desirable that the viewer can set a favorite value later. Of course, the same applies to backward skipping.

  Similarly, at the time of fast-forwarding, if the previous video is displayed on the sub-screen 1001 for the time corresponding to the fast-forwarding speed, the viewing environment is improved. The time corresponding to the fast-forwarding speed is the time to advance from the time the viewer recognizes that the undesired scene has been switched to the desired scene during fast-forward playback to the time when the playback button 103 is pressed and the video is actually switched to playback. It may be determined in consideration of. For example, assuming that this time is 1 second, it is 30 seconds for 30-times fast forward, and 10 seconds for 10-times fast forward. That is, when the fast-forward button 105 is pressed, the display instruction unit 1403 generates a multi-screen signal in which the time position difference between the designated screens is a time corresponding to the fast-forward speed.

  In this way, for example, the viewer may watch the video on the sub-screen 1001 at the time of fast-forwarding 30 times and press the playback button 103 when he notices that the desired scene has started. Since the time lag from when the viewer notices to the change to playback is 1 second, the video has advanced by 30 seconds. In this way, the desired scene starts just on the main screen 1000.

  Of course, the time lag may change under various conditions, so these values may be set by the viewer later.

  Here, the case of fast forward has been described, but the same applies to the case of fast reverse.

  In order to maintain viewing comfort, it is important not to increase the number of button presses unnecessarily. Therefore, when fast-forward and fast-reverse, the fast-forward button 105 and the fast-reverse button 104 are pressed. While the sub-screen 1001 appears and is being performed, it is desirable that it be displayed all the time. That is, the sub screen 1001 appears at the same time that the fast forward button 105 or the fast reverse button 104 is pressed.

  The timing at which the sub-screen 1001 disappears depends on the control method of the fast-forward operation or fast-rewind operation of the device, but the timing to return to normal playback upon receiving an instruction to end the fast-forward operation or fast-rewind operation, that is, the fast-forward button 105 If the fast-rewind button 104 is stopped, or if the fast-forward button 105 or the fast-reverse button 104 is stopped and the fast-forward operation or the fast-rewind operation continues, the play button 103 Any timing may be used as long as the button is pressed to return to the playback operation.

  The skip operation appears once when the forward skip button 102 or the backward skip button 101 is pressed, and it is determined that the viewer will not press the forward skip button 102 or the backward skip button 101 continuously. It is only necessary to display for a period of time, for example, 2 seconds, and after that, the sub-screen 1001 automatically disappears, and the original playback screen in which the main screen is displayed on the full screen is restored.

  However, these are methods intended not to increase the number of button presses. Therefore, the present invention is not limited to this, and for example, there is a sub screen on / off button 109 on the remote controller 100. The screen 1001 may appear, and when it is pressed again, it may disappear and return to the original screen.

  Here, it was described that the sub screen appears only during fast forward, fast reverse, and skip operations. However, the application of the present invention is not limited to this, and it is of course possible to always display the sub-screen when viewing.

Next, a display method on the screen by the video reproduction apparatus of this embodiment will be described.
In FIG. 3, it has been described that the main screen 1000 and the sub screen 1001 are displayed in a state in which the main screen 1000 and the sub screen 1001 are arranged side by side. However, the display method is not limited thereto. For example, as shown in FIG. 14, a method may be used in which a reduced sub-screen 3001 called a “picture-in-picture” is displayed on a part of the main screen 3000. In this case, it is not possible to see an area where the sub screen 3001 is displayed in the video of the main screen 3000.

  Therefore, as shown in FIG. 15, a technique may be used in which the display on the sub screen 3002 is transmitted and the video on the main screen 3100 can be viewed at the same time. By changing the transparency of the sub-screen 3101, it is possible to meet the demand that the viewer wants to focus on the main screen 3100 or the sub-screen 3101. These video overlay processes can be realized by performing a technique / calculation such as overlay process, translucent process, or alpha blending in the special effect generating unit 214 in the GPU 207.

  Next, the relative display positional relationship between the main screen 1000 and the sub screen 1001 on the display device 1002 will be described. In FIG. 3, a sub screen 1001 is displayed on the right side of the main screen 1000. 14 and 15, the sub-screen 3001 or 3101 is located on the right side of the screen center. This expresses that these sub-screens are in the future than the main screen, in other words, that the sub-screen displays a time position 10 seconds in the future based on the time position of the main screen.

  Therefore, a case where the past is displayed on the sub screen rather than the main screen will be described with reference to FIGS. 5 and 16. In FIG. 16, the video at the time position 901 currently being viewed is displayed on the main screen 3200, and the video at the time position 903 10 seconds before (past) the current viewing is positioned to the left of the center of the screen. It is displayed on the screen 3201. This expresses that the sub-screen 3201 is past the main screen 3200, in other words, that the sub-screen is displaying 10 seconds or the time position on the basis of the time position of the main screen.

  Next, the relationship between the time position difference between the main screen and the sub screen and the display area will be described with reference to FIGS. In FIG. 17, the video at the time position 901 that is currently being viewed is displayed on the main screen 3300, and the video at the time position 904 that is 100 seconds before (past) the current viewing is displayed on the sub-screen 3301. . 16 and FIG. 17, the difference or ratio between the display areas of the latter main screen 3300 and the sub screen 3301 is larger than the difference or ratio between the display areas of the former main screen 3200 and the sub screen 3201. This indicates that the time difference (100 seconds) between the time position 901 and the time position 904 is larger than the time difference (10 seconds) between the time position 901 and the time position 903 currently being viewed in FIG. ing.

  Here, the display area difference or ratio is used, but the display area difference or ratio is not limited thereto. For example, as shown in FIG. 18, the distance between the main screen 3400 and the sub screen 3401 is increased according to the time position difference. It can be enlarged. In this case, the display position control unit 213 calculates the display position of each screen so that the distance between the main screen 3300 and the sub screen 3301 increases as the difference in time position specified by the multi-screen signal increases.

  Here, the video currently being viewed and the past video have been described as examples. However, the concept of the relationship between the display areas or the distance between the displays is the same for the current video and the future video.

  In the example shown in FIG. 18, the relationship between the main screen and one sub-screen has been described. Similarly, when a plurality of sub-screens are displayed, the difference or ratio between the display areas of each screen, The time difference between the screens may be expressed by changing the distance and position between the main screen and the sub screen.

  Note that the difference or ratio between the display areas of the main screen 3300 and the sub screen 3301 or the distance between the main screen 3400 and the sub screen 3401 is determined by the control unit 204, and the size and display of each screen are displayed by a multi-screen signal. The position is instructed to the GPU 207 by the control unit 204. Further, the time position of each screen is grasped by the control unit 204, and can be grasped by the control unit 204 instructing each unit one by one, each unit notifying the control unit 204, or both.

  In this way, the time difference between the two screens can be intuitively conveyed to the viewer by dynamically changing the display area difference or ratio and the distance between the main screens and subscreens or between the subscreens and subscreens. Can do. The display image enlargement / reduction processing is performed by the main screen processing unit 211 and the sub screen processing unit 212 in the GPU 207, and the display position is changed by the display position control unit 213.

  By combining the contents described so far, a display as shown in FIG. 19 is possible. This displays the time positions 901 and 902 to 905 shown in FIG. 5 on the main screen 3501 and the sub screens 3502 to 3505, respectively. In order to realize this, as shown in FIG. 20, the configuration of FIG. 4 includes three decoders 1501 to 1503 or three decoders having functions equivalent to those combined with three decoders 1501 to 1507. Need to add. That is, it is only necessary to provide as many decoders and screen processing units (main or sub) as the number of simultaneous display screens as a whole device.

  In FIG. 19, each screen is represented in a plane, but by representing these three-dimensionally, as shown in FIG. 21, for example, the flow of time is displayed in a movie film as in a display form 3606. It is possible to express the main screen 3601 and the sub screens 3602 to 3605 as frames on the film. These display processes are performed by the main screen processing unit 211, the first to fourth sub-screen processing units 1504 to 1507, and the special effect generating unit 214 in the GPU 207. As a technique, it can be realized by performing operations such as texture mapping and shading. A main screen 3601 and sub-screens 3602 to 3605 are images of time positions 901 and 902 to 905 shown in FIG. These are all moving images.

Next, a decoding method when displaying a plurality of videos will be described.
For example, when the video as shown in FIG. 19 is displayed with the configuration shown in FIG. 20, the first to fifth decoders 201, 202, 1501-1503, the main screen processing unit 211, and the first to fourth sub-screen processing units. Since 1504 to 1507 perform processing, the memory 203 is accessed simultaneously. In this case, a very wide bandwidth is required for the main bus 210. In order to realize this, there are methods such as increasing the operating frequency of the main bus 210 or extending the bit width. However, there are disadvantages such as an increase in the cost of the device and a difficulty in designing the device.

  Therefore, as a solution other than the above, a method of decoding by thinning out a frame and a method of decoding by reducing the resolution will be described. The method of decoding by thinning out the frame is to decode only the I picture when the video encoding method is MPEG2. Since the I picture is a reference image, it is convenient for thinning decoding. Other than this, a general method such as decoding only a frame every 0.5 seconds may be used. As a result, normally, decoding was performed in order to create 60 frames per second per video, and five of them were transferred at the same time. If the method is used, it is only necessary to make two frames per second, so the bandwidth can be saved to 1/30. In addition, since less data is transmitted on the main bus 210, the necessary bandwidth can be saved as a result.

  The method of decoding by reducing the resolution is not to decode all the pixels but to decode to a resolution necessary for display. Normally, HDTV broadcasting uses 1920 x 1080 pixels per screen, but the sub-screen (and the main screen, depending on the display method) is displayed in a reduced size. do not have to. Therefore, when decoding, if decoding is performed in a thinned state in advance, for example, 960 × 540 dots or 480 × 270 dots, data transmitted on the main bus 210 can be reduced. In the example, the necessary bandwidth can be saved to 1/4 or 1/16.

  Since these are commonly used techniques and are not the essence of the present invention, they will not be described in further detail here.

  The above-described embodiment can be applied when viewing what has been once recorded on a recording medium. This can also be applied to so-called chasing playback while recording a broadcast program while shifting the program time. For example, when a certain program is recorded, the program is viewed from the beginning 10 minutes after the program starts. In the case of this chasing playback, if the forward skip is performed too much, the video being broadcast may catch up. In this case, the same subscreen as the main screen is displayed on the corresponding subscreen that has caught up, or it is displayed in black, or video and information notifying the viewer that the broadcast has been caught up are displayed. That's fine.

  Next, a time axis bar, which is a method for making it easier for the viewer to understand the state of the main screen and the sub screen described above, will be described. FIG. 22 is a schematic diagram illustrating an example of a screen when a time axis bar is displayed. The time axis bar 2200 provides the viewer with easy-to-understand information about the correspondence between the time position information and the display screens 3501 to 3505 shown in FIG. The time axis bar 2200 corresponds to the time axis, and in FIG. 22, the left indicates the past and the right indicates the future. Of course, the time axis bar 2200 is not limited to this format, and is displayed in the vertical (vertical) direction, displayed in a ring shape, displayed only in the future direction from the current viewing position, displayed only in the past direction, future direction and past direction. It is also possible to consider a form in which the expression is changed, such as displaying with two time axis bars. The image of the time axis bar 2200 is written into the memory 203 by the time axis bar drawing unit 1405 of the control unit 204, and is read out by the GPU 207 and displayed on the screen.

  A time position mark 2201 on the time axis bar 2200 indicates the time position of the currently viewed video 3501 and corresponds to the time position 901. Similarly, the time position marks 2202 to 2205 correspond to the images 3502 to 3505 and the time positions 902 to 905, respectively. The time axis bar drawing unit 1405 writes these time position marks 2201 to 2205 together with the time axis bar 2200 to the memory 203, and the GPU 207 reads them and displays them on the screen. Further, a time position mark 2206 indicates a time position 900 that is currently being broadcast. The time zone 2210 indicates the past from the current viewing time position 901, and is expressed in white here. Similarly, the time zone 2211 represents the future from the time position 901 and is expressed in black.

  Similarly, since the main screen 3501 is the current viewing screen, the main screen 3501 is displayed near the center of the display device 1002, and based on this, the past video is displayed on the left and the future video is displayed on the right. The reverse is also acceptable.

  Furthermore, if the time position marks 2201 to 2205 of the time axis bar 2200 and the display images 3501 to 3505 are visually connected by dotted lines 2220, it becomes clearer to the viewer. The time axis bar drawing unit 1405 writes the dotted line 2220 to the memory 203 together with the time axis bar 2200 and the time position marks 2201 to 2205, and the GPU 207 reads it and displays it on the screen. By displaying in this way, the viewer can check at a glance which display image 3501-3505 is displaying which time.

  Next, a modification of the remote controller for remotely operating the video playback apparatus according to the present embodiment will be described. FIG. 23 is an external view showing a modification of the remote controller for remotely operating the video playback apparatus according to the present embodiment. As shown in the figure, a screen selection button 2100 may be added to the remote controller 100 and a screen selection cursor 2212 (see FIG. 22) may be added to the screen display to change the time position of the sub-screens 3502 to 3505 or the main screen 3501.

  Specifically, the screen selection button 2100 is used when moving the screen selection cursor 2212, and the time position mark of the currently selected main screen or sub-screen is changed each time the button is pressed. In FIG. 22, the time position mark 2203 is selected, but when the viewer presses the screen selection button 2100 once, the screen selection cursor 2212 moves to the time position mark 2201 that is the time position mark adjacent to the right. Similarly, each time the screen selection button 2100 is pressed, the time position mark 2202 → 2205 → 2204 → 2203 moves. Furthermore, if a frame is added to the screen so that the main screen 3501 or the sub screens 3502 to 3505 selected by the screen selection cursor 2212 are visually selected, the viewer can discriminate more clearly. It becomes easy to do. That is, the image control unit adds a frame to the screen of the selected video that is the target of the instruction by the user operation so that the display is different from the other screens, and the time axis bar drawing unit 1405 is selected. A frame is attached to the time position mark corresponding to the video, and the display is different from other time position marks. As a result, the viewer can display the video to be instructed by the user operation so that the video can be distinguished from other videos. In the example shown in FIG. 22, the time position mark 2203 is selected, and a frame is displayed on the corresponding sub-screen 3503.

  Then, the time position of the selected video can be changed. For example, in FIG. 22, since the time position mark 2203 is selected, at this time, if the backward skip button 101 is pressed once, the scene 10 seconds past on the sub-screen 3503 corresponding to the time position mark 2203 is displayed. The time position mark 2203 also moves 10 seconds past, that is, to the left. Similarly, when the forward skip button 102 is pressed once, the scene is instantaneously moved to the future scene for 5 seconds, and at the same time, the time position mark 2203 is also moved to the future, that is, rightward by 10 seconds.

  When the fast-reverse button 104 is pressed, the sub-screen 3503 is quickly returned and reproduced, and the time position mark 2203 gradually moves to the left along with the time movement. When the fast-forward button 105 is pressed, the sub-screen 3503 is fast-forwarded and the time position mark 2203 is also gradually moved in the right direction. When the pause button 106 is pressed, the current operation is paused. In addition, when performing this operation, the buttons are not limited to the examples given here. For example, a rotary controller such as a jog dial provided in an AV device or a wheel commonly used in a PC mouse may be used.

  The operation that the selected screen can be controlled by the remote control is the same even when the time axis bar as shown in FIG. 24 is not displayed. In the case shown in FIG. 24, the sub screen 3503 is selected, and an instruction from the remote controller 100 is an instruction to the sub screen 3503. For example, when the backward skip button 101 is pressed once in the state shown in FIG. 24, the sub-screen 3503 instantaneously moves to and displays a scene 10 seconds past. Even if another button is pressed, the operation corresponding to the button is determined to be an instruction to the selected screen, and control is performed.

  Here, for example, when the current viewing time position 901 is exceeded by pressing the forward skip button 102 many times or by continuously pressing the fast forward button 105, as shown in FIG. 25, the main screen 3501 and the sub screen are displayed. The display position of 3503 is switched, and the time position mark 2203 on the time axis bar 2200 is also moved to the right of the current viewing position mark 2201 to update the correspondence state between the video and the time position. Further, as described so far, regarding the display sizes of the sub-screens 3503 and 3502, the sub-screen 3503 is closer in time to the main screen 3501, so that the sub-screen 3503 is relatively more than the sub-screen 3502. You may make it display large.

  Furthermore, as shown in FIG. 25, when the screen deletion button 2101 is pressed while the screen selection cursor 2212 selects the time position mark 2203 corresponding to the sub screen 3503, the sub screen 3503 and the time position mark 2203 are displayed. From the screen. Accordingly, as shown in FIG. 26, the main screen 3501 is displayed large, and the screen selection cursor 2212 is moved to a state where the next time position mark 2202 is selected.

  Further, as shown in FIG. 25, each time the screen enlargement button 2102 is pressed while the screen selection cursor 2212 selects the time position mark 2203 corresponding to the subscreen 3503, the display area of the subscreen 3503 is enlarged. To do. At this time, the maximum area of the sub screen 3503 may be limited to a range that does not exceed the area of the main screen 3501, or when the area of the main screen 3501 is exceeded, as shown in FIG. An enlargement 2503 of the screen 3503 may become a main screen, and 3501 that was originally the main screen may become smaller and may be changed to a sub screen 2501. At that time, the display on the time axis bar 2200 also changes from the sub screen 2203 to the main screen 2503 and changes instantaneously from the main screen 2201 to the sub screen 2501. Since the sound is the sound of the main screen, in this case, when the main screen and the sub screen are switched, the sound of the corresponding screen is output accordingly. On the contrary, if the main screen is made smaller, the sub screen may be replaced.

  As described above, according to the present invention, it is possible to display another video at the same time in addition to the main screen on which the viewer views the video, so that the viewer can obtain a large amount of information at a time. Is possible. For this reason, when the viewer instructs the video reproducing apparatus according to the present embodiment to perform the next operation, the viewer can be more confident. Thereby, it becomes a more comfortable viewing environment for the viewer to use the video playback apparatus according to the present embodiment.

  In addition, the display instruction unit 1403, the remote control signal processing unit 220, the timer 1404, the time axis bar drawing unit 1405, the main screen processing unit 211, the sub screen processing unit 212, and the display position control unit 213 in FIG. The special effect generation unit 214 may be realized by dedicated hardware, or may be realized by a memory and a microprocessor.

  In this specification, for convenience, the video playback apparatus according to the embodiment of the present invention has been described as one device, but the present invention is not limited to this. For example, each function is divided into a plurality of devices, which are connected via a network or the like, and can be implemented as long as the system satisfies the requirements of the present invention. As a specific example, there is a combination of a digital television receiver that can be connected to a network such as iLink or Ethernet (registered trademark) and a video recording apparatus mounted with HDD. In this case, the encoded moving image is recorded by the HDD-equipped video recording device, and the digital television receiver decodes the encoded moving image. Since the implementation of the present invention in this combination can be easily realized by the above description, the detailed description is omitted here.

  The present invention is not limited to the above-described embodiments, and various modifications are possible within the scope shown in the claims, and the present invention can be obtained by appropriately combining technical means disclosed in different embodiments. Such embodiments are also included in the technical scope of the present invention.

The present invention can be applied to a device that acquires a video signal or video data from a network typified by the Internet or a telephone network, broadcast, a recording medium typified by a DVD or a hard disk, and reproduces it.
Specifically, a television receiver, a recording / reproducing apparatus such as a hard disk recorder or a DVD recorder, a portable image receiving terminal, a portable reproducing terminal, a personal computer, an Internet terminal, a mobile phone, a video phone, a digital camera, a video camera, or Applicable to applications such as video game machines.
It also includes software that runs on those devices.

1 is an external view showing a video playback system using a video playback device according to an embodiment of the present invention. It is an external view which shows an example of the remote control for operating the video reproduction apparatus by this embodiment. It is a schematic diagram for demonstrating the display method by the video reproduction apparatus by this embodiment. It is a block diagram which shows the structure of the video reproduction apparatus by this embodiment. It is a conceptual diagram which shows a content on a time axis. It is a flowchart for demonstrating operation | movement when the forward skip button 102 is pushed during reproduction | regeneration viewing. It is a flowchart for demonstrating operation | movement when the forward skip button 102 is pushed during reproduction | regeneration viewing. It is a flowchart for demonstrating operation | movement when the forward skip button 102 is pushed during reproduction | regeneration viewing. It is a flowchart for demonstrating operation | movement when the forward skip button 102 is pushed during reproduction | regeneration viewing. It is a flowchart for demonstrating operation | movement when the forward skip button 102 is pushed during reproduction | regeneration viewing. It is a conceptual diagram for demonstrating the operation | movement of the image reproduction by the image reproduction apparatus of this embodiment. It is a conceptual diagram for demonstrating the operation | movement of the image reproduction by the image reproduction apparatus of this embodiment. It is a conceptual diagram for demonstrating the operation | movement of the image reproduction by the image reproduction apparatus of this embodiment. It is a schematic diagram explaining the display method on the screen by the video reproduction apparatus of this embodiment. It is a schematic diagram explaining the display method on the screen by the video reproduction apparatus of this embodiment. It is a schematic diagram explaining the display method on the screen by the video reproduction apparatus of this embodiment. It is a schematic diagram explaining the display method on the screen by the video reproduction apparatus of this embodiment. It is a schematic diagram explaining the display method on the screen by the video reproduction apparatus of this embodiment. It is a schematic diagram explaining the display method on the screen by the video reproduction apparatus of this embodiment. It is a block diagram which shows the other structural example of the video reproduction apparatus of this embodiment. It is a schematic diagram explaining the display method on the screen by the video reproduction apparatus of this embodiment. It is a schematic diagram explaining the display method on the screen by the video reproduction apparatus of this embodiment. It is an external view which shows the other structural example of the remote control which remote-controls the video reproduction apparatus of this embodiment. It is a schematic diagram explaining the display method on the screen by the video reproduction apparatus of this embodiment. It is a schematic diagram explaining the display method (time-axis bar | burr) on the screen by the video reproduction apparatus of this embodiment. It is a schematic diagram explaining the display method (time-axis bar | burr) on the screen by the video reproduction apparatus of this embodiment. It is a schematic diagram explaining the display method (time-axis bar | burr) on the screen by the video reproduction apparatus of this embodiment. It is a block diagram which shows the structure of the video reproduction apparatus by a prior art. It is a flowchart for demonstrating operation | movement of the video reproduction apparatus of a prior art. It is a flowchart for demonstrating operation | movement of the video reproduction apparatus of a prior art. It is a flowchart for demonstrating operation | movement of the video reproduction apparatus of a prior art. It is a flowchart for demonstrating operation | movement of the video reproduction apparatus of a prior art. It is a conceptual diagram for demonstrating the image | video reproduction | regeneration operation | movement by the conventional apparatus. It is a conceptual diagram for demonstrating the image | video reproduction | regeneration operation | movement by the conventional apparatus. It is a conceptual diagram for demonstrating the image | video reproduction | regeneration operation | movement by the conventional apparatus. It is a conceptual diagram for demonstrating the image | video reproduction | regeneration operation | movement by the conventional apparatus. It is a conceptual diagram for demonstrating the image | video reproduction | regeneration operation | movement by the conventional apparatus. It is a conceptual diagram for demonstrating the image | video reproduction | regeneration operation | movement by the conventional apparatus.

Explanation of symbols

100 Remote control (operating means)
101 backward skip button 102 forward skip button 103 play button 104 fast reverse button 105 fast forward button 106 pause button 107 stop button 108 remote control signal light emitting unit 109 sub screen on / off button 200 tuner 201 first decoder (playback means)
202 Second decoder (reproducing means)
203 Memory 204 Control Unit (Reproduction Control Unit)
205 Recording medium 206 Recording controller (reproducing means)
207 GPU (reproduction control means)
208 Display device 209 Remote control light receiving unit 210 Main bus 211 Main screen processing unit 212 Sub screen processing unit 213 Display position control unit 214 Special effect generating unit 220 Remote control signal processing unit 240 Antenna 241 Main bus 1000 Main screen 1001 Sub screen 1002 Display device 1401 Decoder 1402 Screen processing unit 1403 Display instruction unit 1404 Timer 1405 Time axis bar drawing unit (time axis bar generating means)
1501 Third decoder (reproducing means)
1502 Fourth decoder (reproducing means)
1503 5th decoder (reproducing means)
1504 First sub-screen processing unit 1505 Second sub-screen processing unit 1506 Third sub-screen processing unit 1507 Fourth sub-screen processing unit 2000 Television receiver 2001 Video reproduction device 2002 Remote control signal light receiving unit 2003 Display video 2100 Screen selection button 2101 Screen deletion button 2102 Screen enlargement button 2103 Screen reduction button 2200 Time axis bar 2201 Main screen time position mark 2202 to 2205 Time position mark 2206 Broadcast time position mark 2212 Screen selection cursor 2501 Sub-screen 2503 Main screen 3000, 3100, 3200, 3300 3400 Main screen 3001, 3101, 3201, 3301, 3401 Sub screen 3501, 3601 Main screen 3502, 3602 First sub screen 3503, 3603 Second sub screen 3504, 3604 Third sub screen 3505, 3605 4th sub-screen 3606 Time axis expressed on film

Claims (19)

A plurality of playback means for generating a video by instructing a playback mode, content, and time position of fast-forward playback, fast-rewind playback, or normal playback, and playing back the content according to the instruction;
Based on a signal for instructing fast-forward playback or fast-rewind playback, playback control means for instructing the playback means the playback mode, the content to be played back, and the time position;
And a screen control means for generating a screen for displaying each of the videos generated by the plurality of playback means.   2. The video playback apparatus according to claim 1, wherein the playback control unit instructs each of the playback units to have different time positions of the same content. A plurality of reproducing means for instructing content and a time position, reproducing the content according to the instruction, and generating a video;
Reproduction control means for instructing the reproduction means to reproduce the content at a time position calculated based on a signal instructing forward skip or backward skip;
And a screen control means for generating a screen for displaying each of the videos generated by the plurality of playback means.   4. The video playback apparatus according to claim 3, wherein the playback control means designates different time positions of the same content for each of the playback means.   5. The video reproduction according to claim 2, wherein the screen control means sets the distance between the screens to a distance corresponding to a time difference between time positions corresponding to the video displayed on the screen. apparatus.   5. The screen control means according to claim 2 or 4, wherein the display area difference or ratio between the screens is a value corresponding to a time difference between time positions corresponding to images displayed on the screen. The video playback device described. Comprising operation means for inputting operation instructions;
5. The video reproduction apparatus according to claim 2, wherein the screen control unit changes a display area of the screen based on an instruction from the operation unit. A time axis bar generating means for generating an image with a time axis bar and an image marked with a position indicating the time position being reproduced by each of the reproducing means of the time axis bar;
5. The video reproduction apparatus according to claim 2, wherein the screen control unit generates a screen for displaying the image generated by the time axis bar generation unit. The time axis bar generating means changes a position for attaching the mark to the time axis bar based on an instruction by a user operation,
The reproduction control means instructs the reproduction means corresponding to the mark changed in position added by the time axis bar generation means to reproduce the time position corresponding to the position changed by the time axis bar generation means. The video reproduction apparatus according to claim 8.   9. The video reproduction apparatus according to claim 8, wherein the screen control unit changes a display area of a screen corresponding to the mark according to a position of the mark on the time axis bar.   9. The video reproduction apparatus according to claim 8, wherein the time axis bar generation unit generates an image representing a correspondence relationship between the mark and the screen.   5. The image control unit according to claim 2 or 4, wherein among the videos displayed on the screen, the screen of the video to be instructed by the user operation is different from the other screens. The video playback device described in 1.   The time-axis bar generating means displays differently in a mark corresponding to a video to be instructed by the user operation and other marks in the video displayed on the screen. Item 9. The video playback device according to Item 8.   The playback control means changes a time difference between the playback means at a time position instructed to the playback means in accordance with a speed of the fast forward playback or fast reverse playback. The video playback device described in 1.   When the reproduction control unit receives the instruction, the reproduction control unit instructs the reproduction unit reproducing the content to perform reproduction in an operation mode corresponding to the instruction, and the reproduction unit reproduces the time position The video playback apparatus according to claim 1 or 2, wherein the playback unit different from the playback unit is instructed to play the content at a time position calculated based on the received instruction.   When receiving an instruction to end fast-forward playback or fast-rewind playback by a user operation, the playback control means instructs playback at the calculated time position when receiving an instruction to fast-forward playback or fast-rewind playback. 16. The video reproduction apparatus according to claim 15, wherein the reproduction unit is instructed to stop reproduction.   When the reproduction control unit receives the instruction, the reproduction control unit instructs the reproduction unit reproducing the content to perform reproduction at a time position calculated according to the instruction, and the reproduction unit reproduces the instruction. 5. The video reproduction apparatus according to claim 3, wherein the reproduction unit different from the reproduction unit is instructed to reproduce the content at the time position calculated based on the time position and the received instruction. .   When a predetermined time has elapsed after receiving the instruction, the reproduction control means reproduces the reproduction means that instructed reproduction at the calculated time position when the forward skip or backward skip instruction is received. The video reproduction apparatus according to claim 17, wherein stop of the video is instructed. 5. The video playback apparatus according to claim 3, wherein the playback control means makes the difference in time position instructed to each of the playback means equal to a time skipped by forward skip or backward skip.

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