JP4563473B2 - Playback apparatus, video playback method, video playback program, and computer-readable storage medium storing video playback program - Google Patents

Description

  The present invention relates to a playback device for playing back video content, a video playback method, a video playback program, and a computer-readable storage medium storing the video playback program.

  In a playback apparatus that plays back video content stored in a storage medium, video content is generally played back at a recording speed in a normal playback mode viewed by the user.

US Pat. No. 6,563,999

  However, the user's request for the playback speed when viewing the video content varies depending on the individual user and the content.

  The present invention has been made in view of the above circumstances, and an object of the present invention is to allow content to be played back at a speed according to a request from the user and to provide a display convenient for the user regarding the playback speed. To do.

  The playback device of the present invention plays back video content stored in a storage medium in a playback mode designated by the user among a plurality of playback modes including a normal playback mode.

  The playback device includes playback means, storage means, and speed information display means.

  The reproduction means reproduces the video content at the reproduction speed instructed by the user in the normal reproduction mode, thereby displaying the video of the video content on the display screen and outputting the audio synchronized with the video. The storage means stores the changed playback speed when the user instructs to change the playback speed in the normal playback mode. The speed information display means displays information indicating the changed playback speed on the display screen when the user instructs to change the playback speed in the normal playback mode. The speed information display means displays information indicating the standard speed on the display screen when the playback speed stored in the playback speed storage means is a predetermined standard speed at the start of playback of the video content in the normal playback mode. If the playback speed stored in the playback speed storage means is other than the standard speed, information indicating the playback speed stored in the playback speed storage means is displayed on the display screen.

  According to the present invention, it is possible to reproduce content at a speed according to a request from the user, and it is possible to perform display that is convenient for the user regarding the reproduction speed.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. Each embodiment is an exemplification of the present invention, does not limit the present invention, and can be arbitrarily changed within the scope of the present invention.

[Embodiment 1]
In the playback apparatus of this embodiment, normal playback mode, fast forward mode, fast reverse mode, and pause mode are provided as modes (playback modes) that can be set when playing back video content stored in a storage medium. Yes. The normal playback mode is a mode in which video content is played back at an appropriate speed for the user so that the user can view the content while understanding the content. The fast-forward mode and fast-reverse mode are modes for fast-forward playback and fast-reverse playback of video content so that the user can search for a desired scene in a short time. The pause mode is a mode in which the video is stopped and displayed as a still image.

  In the normal playback mode, the playback speed can be set in stages. Specifically, 1x playback (standard speed playback) that plays back at the recording speed (standard speed), 1.5x playback (fast playback at slightly higher speed) that plays back at 1.5 times the standard speed, and Can be set to 2x playback (fast playback at high speed) that plays at 2.0 times the standard speed and 0.5x playback (slow playback) at 0.5 times the standard speed It is. In the normal playback mode, audio adjusted according to the playback speed is output together with the video, and in the fast forward mode and fast reverse mode, only the video is output and no audio is output. In the fast-forward mode and the fast-rewind mode, the fast-forward speed and the fast-reverse speed can be set stepwise (three stages of low speed, medium speed, and high speed, respectively). Note that fast-forward playback at low speed is faster than normal playback at 1 × speed (standard speed).

(1) Configuration <Configuration of terminal device>
The playback device of this embodiment is a portable terminal device 1. As shown in FIG. 1, the terminal device 1 includes a plurality of operation input units 2, a display unit (display screen) 3, a speaker 11, and a microphone 12 on the front surface of the main body. The operation input part 2 is arrange | positioned in the part enclosed with the broken line in FIG.

  The operation input unit 2 includes up / down / left / right direction keys 20U, 20D, 20L, 20R, L button 21L, R button 21R, ○ button 22A, Δ button 22B, □ button 22C, x button 22D, home button 23A, volume button. 23B, 23C, a display button 23D, a sound button 23E, a select button 23F, a start button 23G, and an operation pad such as an analog pad 24 capable of analog operation.

  Further, the terminal device 1 includes a disk operation switch 4 for operating mounting of an optical disk, an infrared port 5 for performing wireless communication, and a USB terminal 6 on the upper part of the main body. Further, as shown in FIG. 2, the terminal device 1 includes a disk mounting portion 7 to which an optical disk is mounted at the central portion on the back surface of the main body, and a memory card slot portion 8 on one end side of the back surface of the main body. An optical disk in which an application program such as a video game is recorded is loaded in the disk loading unit 7, and a memory card is loaded in the memory card slot unit 8. Although not shown, the terminal device 1 includes a wireless LAN switch, a charging terminal, a power switch, and the like.

  The terminal device 1 reproduces the video content stored in the optical disc or the memory card in accordance with a predetermined operation input from the user to the operation input unit 2 and displays it on the display unit 3. Note that a hard disk device (HDD) may be provided in the terminal device 1 to reproduce video content stored in the hard disk. In addition, the terminal device 1 receives a TV broadcast, a recording function that records a received program or a camera-captured moving image on a storage medium such as an optical disk, a memory card, or a hard disk, or a program that is being recorded. It may have a so-called chasing playback function for playing back later.

  In the operation input unit 2, each direction key 20U, 20D, 20L, 20R is assigned a function of moving the selection position when specifying the video content to be reproduced on the menu screen displayed on the display unit 3. ing.

  The button 22A includes a function for playing the video content specified on the menu screen in the normal playback mode (a function for receiving a playback start instruction) and a function for shifting from the normal playback mode to the pause mode (a function for receiving a pause instruction). ) And a function for shifting from the pause mode, the fast reverse mode, and the fast forward mode to the normal playback mode (a function for receiving an instruction to change to the normal playback mode).

  The left arrow key 20L has a function for shifting to the fast reverse mode (a function for receiving an instruction to change to the fast reverse mode) and a function for gradually increasing the fast reverse speed in the fast reverse mode (for receiving a fast reverse speed up instruction). Function). For example, when the left direction key 20L is pressed during playback in the normal playback mode, the mode shifts to the fast reverse mode to perform low speed fast reverse playback, and when the left direction key 20L is pressed again, the medium speed fast reverse is performed. When playback is started and the left direction key 20L is further pressed, high-speed rewind playback is performed.

  The right direction key 20R has a function for shifting to the fast-forward mode (a function for receiving an instruction to change to the fast-forward mode) and a function for gradually increasing the fast-forward speed in the fast-forward mode (a function for receiving a fast-reverse speed down instruction). Assigned. For example, if the right direction key 20R is pressed during playback in the normal playback mode, the mode shifts to the fast forward mode and becomes low speed fast forward playback, and if the right direction key 20R is pressed again, it becomes medium speed fast forward playback. When the right direction key 20R is further pressed, high-speed fast-forward playback is performed.

  The up key 20U is assigned a function for increasing the playback speed stepwise in the normal playback mode (a function for receiving an instruction to increase the playback speed), and the down key 20D is set for stepwise playback speed in the normal playback mode. A function to slow down (a function to receive a playback speed down instruction) is assigned. For example, when the up key 20U is pressed during 1 × speed playback, 1.5 × speed playback is performed, and when the up key 20U is pressed again, 2 × speed playback is performed. Similarly, when the down key 20D is pressed during 2 × speed playback, 1.5 × speed playback is performed, and when the down key 20D is pressed again, 1 × speed playback is performed. Further, when the down key 20D is pressed during 1 × speed playback, 0.5 × speed playback is performed, and when the up direction key 20U is pressed during 0.5 × speed playback, 1 × speed playback is performed.

  The × button 22D is assigned a function (a function for receiving a playback end instruction) that ends the playback of the video content and displays the menu screen on the display unit 3.

  Next, the electrical configuration of the terminal device 1 will be described with reference to FIG. FIG. 3 is a block diagram illustrating an example of a schematic electrical configuration of a main part of the terminal device 1.

  The terminal device 1 includes a control system 40 including a central processing unit (CPU) 41 and its peripheral devices, and an image processing device (GPU: Graphic Processing Unit) 52 that performs drawing in a frame buffer 53. A sound system 60 including a graphic system 50, a sound processing unit (SPU) 61 that generates musical sounds, sound effects, and the like, an optical disc control unit 70 that controls an optical disc on which an application program is recorded, The wireless communication part 80, the interface part 90, the operation input part 2, and the bus | bath etc. to which said each part is connected are comprised.

  The sound system 60 includes an SPU 61 that generates musical sounds and sound effects under the control of the control system 40, a sound buffer 62 that records waveform data and the like by the SPU 61, and musical sounds and sound effects that are generated by the SPU 61. Is provided, and a microphone 12 is provided.

  The SPU 61 uses, for example, an ADPCM decoding function for reproducing audio data obtained by adaptive predictive coding (ADPCM: Adaptive Differential PCM) using 16-bit audio data as a 4-bit differential signal, and waveform data stored in the sound buffer 62. A reproduction function for generating sound effects and the like by reproduction and a modulation function for modulating and reproducing the waveform data stored in the sound buffer 62 are provided. The SPU 61 has a function of supplying the audio data supplied from the microphone 12 to the CPU 41. When an external sound is input, the microphone 12 performs A / D conversion or the like based on a predetermined sampling frequency and the number of quantization bits and supplies the audio data to the SPU 61.

  The optical disk control unit 70 includes an optical disk device 71 that reproduces a program, data, and the like recorded on the optical disk, and a decoder that decodes the program, data, and the like recorded with, for example, an error correcting code (ECC) added thereto 72 and a buffer 73 that temporarily stores data from the optical disk device 71 to speed up reading of data from the optical disk. A sub CPU 74 is connected to the decoder 72.

  The interface unit 90 includes a parallel I / O interface (PIO) 91 and a serial I / O interface (SIO) 92. These are interfaces for connecting the memory card M and the terminal device 1.

  The operation input unit 2 supplies the CPU 41 with operation signals corresponding to the operation of various operation buttons and the analog pad 24.

  The wireless communication unit 80 performs wireless communication with another terminal device 1 via the infrared port 5 under the control of the control system 40. The wireless communication unit 80 transmits and receives data in accordance with a communication standard such as IEEE 802.11b. Specifically, when data is transmitted to another terminal device 1, confirmation response data indicating that the reception of the data is completed is received from the other terminal device 1, and the confirmation response data cannot be received In this case, data is retransmitted. When receiving data transmitted from another terminal device 1, after receiving the data, confirmation response data indicating that the reception of the data is completed is transmitted to the other terminal device 1.

  The graphic system 50 includes a geometry transfer engine (GTE) 51, a GPU 52, a frame buffer 53, an image decoder 54, and the display unit 3.

  The GTE 51 includes, for example, a parallel operation mechanism that executes a plurality of operations in parallel, and performs operations such as coordinate conversion, light source calculation, matrix, or vector at high speed according to the operation request from the CPU 41. Then, the control system 40 defines a three-dimensional model as a combination of basic unit graphics (polygons) such as a triangle and a quadrangle based on the calculation result by the GTE 51, and applies each polygon for drawing a three-dimensional image. A corresponding drawing command is sent to the GPU 52.

  The GPU 52 draws a polygon (polygon) or the like in the frame buffer 53 in accordance with a drawing command from the control system 40.

  The frame buffer 53 stores an image drawn by the GPU 52. The frame buffer 53 includes a so-called dual port RAM, and can simultaneously perform drawing from the GPU 52 or transfer from the main memory 43 and reading for display. In addition to the display area that is output as video output, the frame buffer 53 stores a CLUT (Color Lock Up Table) that the GPU 52 refers to when drawing a polygon or the like. An area and a texture area for storing a material (texture) that is inserted (mapped) into a polygon or the like that is coordinate-converted at the time of drawing and drawn by the GPU 52 are provided. These CLUT area and texture area are dynamically changed according to the change of the display area.

  The display unit 3 displays the image stored in the frame buffer 53 under the control of the control system 40.

  The image decoder 54 decodes still image data or moving image data stored in the main memory 43 and compressed and encoded by orthogonal transform such as discrete cosine transform under the control of the control system 40 and stores the decoded image data in the main memory 43. Let

  The control system 40 includes a CPU 41, a peripheral device control unit 42 that performs interrupt control, direct memory access (DMA) transfer control, and the like, a main memory 43 that includes a RAM (Random Access Memory), and a ROM (Read Only Memory) 44.

  The ROM 44 stores a program such as an operating system for controlling each unit of the terminal device 1. The CPU 41 reads the operating system stored in the ROM 44 into the main memory 43 and controls the entire terminal device 1 by executing the read operating system.

  Further, the ROM 44 reproduces a control program for controlling each part of the terminal device 1 and various peripheral devices connected to the terminal device 1 and video contents stored in a storage medium such as an optical disk or a memory card M. And various programs such as a game program for causing the CPU 41 to realize a function of playing a game are stored.

  The main memory 43 stores various data such as a program read by the CPU 41 from the ROM 44 or the optical disk and data used when executing the various programs. Further, in the main memory 43, as shown in FIG. 5, a mode information storage area 45 in which mode information is stored, a double speed information storage area 46 in which double speed information is stored, and a double speed information display flag are turned on / off. A set double speed information display flag setting area 47 and a fast reverse / fast forward speed information storage area 48 are provided.

  The mode information is information indicating a mode at the time of playing the video content. The normal playback mode information indicating the normal playback mode, the fast-forward mode information indicating the fast-forward mode, the fast-rewind mode information indicating the fast-rewind mode, And pause mode information indicating the stop mode.

  The double speed information is information indicating the reproduction speed in the normal reproduction mode, information indicating the single speed (standard speed), information indicating the 1.5 speed (1.5 times the standard speed), and double speed ( Information indicating 2.0 times the standard speed) and information indicating 0.5 times the speed (0.5 times the standard speed). In the initial setting, double speed information indicating the single speed is stored.

  The double speed information display flag is a flag for determining whether or not to display double speed information on the display unit 3. The double speed information is displayed when the double speed information display flag is on, and is not displayed when it is off. In the initial setting, the double speed information display flag is set to OFF.

  The fast reverse / fast forward speed information is information indicating the fast forward speed and the fast reverse speed in the fast forward mode and the fast reverse mode, and includes information indicating a low speed, information indicating a medium speed, and information indicating a high speed.

<Functional configuration>
Next, a configuration related to video playback processing realized by the CPU 41 and the like executing a video playback program will be described. FIG. 4 is a functional block diagram for explaining a functional configuration related to video reproduction processing in the terminal device 1.

  A user operation (input instruction) to the operation input unit 2 is input via a GUI (Graphical User Interface) 25. When the user specifies video content on the menu screen and presses the ○ button 22A (operation input of a playback start instruction), the CPU 41 executes video playback processing according to the video playback program. In the terminal device 1, a mode setting function for setting a mode or the like according to an input instruction to the operation input unit 2 by executing a video playback process, and a playback function for playing back video content according to the set mode or the like A mode information display function for displaying mode information or the like according to the set mode or the like is realized.

  Further, when the user presses the X button 22D (operation input of a playback end instruction), the CPU 41 ends the video playback process being executed.

<Mode setting function>
When the input instruction from the user is a predetermined instruction related to reproduction of video content, the CPU 41, as will be described later, information in the main memory 43 (mode information in the mode information storage area 45, double speed information in the double speed information storage area 46, ON / OFF of the double speed information display flag in the double speed information display flag setting area 47, and fast reverse / fast forward speed information in the fast reverse / fast forward speed information storage area 48) are updated as appropriate.

  The CPU 41 sets the mode information to the normal playback mode information with the start of the video playback process.

  When the O button 22A is pressed (the pause instruction is operated and input) with the normal playback mode information stored, the mode information is updated to the pause mode information.

  When the ○ button 22A is pressed in a state where the pause mode information, the fast reverse mode information or the fast forward mode information is stored (the instruction to change to the normal playback mode is input), the mode information is changed to the normal playback mode information. Update.

  When the left arrow key 20L is pressed in the state where the normal playback mode information, the pause mode information, or the fast-forward mode information is stored (an instruction to change to the fast-rewind mode is input), the mode information is changed to the fast-rewind mode. Update to information, and rewind / fast forward speed information to low speed.

  When the fast rewind mode information is stored and the left direction key 20L is pressed (the fast rewind speed up instruction is input), the fast rewind / fast forward speed information is updated in a direction to increase by one step. For example, if the speed is low, it is updated to medium speed, and if it is medium speed, it is updated to high speed.

  When normal playback mode information, pause mode information, or fast reverse mode information is stored, when the right key 20R is pressed (an instruction to change to fast forward mode is input), the mode information is converted to fast forward mode information. To update the fast reverse / fast forward speed information to low speed.

  When the right direction key 20R is pressed with the fast-forward mode information stored (when a fast-forward speed up instruction is input), the fast-reverse / fast-forward speed information is updated in a direction to increase by one step. For example, if the speed is low, it is updated to medium speed, and if it is medium speed, it is updated to high speed.

  If the up key 20U is pressed (the playback speed up instruction is input) in the state where the normal playback mode information is stored, the double speed information is updated in a direction to increase by one step. For example, if the speed information is 0.5 times speed, it is updated to 1 times speed, if it is 1 times speed, it is updated to 1.5 times speed, and if it is 1.5 times speed, it is updated to 2 times speed. In addition, when the pressing time of the upward key 20U continues for a predetermined time or more, the double speed information may be sequentially updated in the direction of increasing the speed information. Also, in this case, when updating from 0.5 × speed to 1 × speed, updating of the double speed information is terminated at 1 × speed, and updating of the double speed information is resumed when the up key 20U is pressed again. Good.

  When the down key 20D is pressed (the playback speed down instruction is operated and input) in a state where the normal playback mode information is stored, the double speed information is updated in a direction that is delayed by one step. For example, if the double speed information is double speed, it is updated to 1.5 times speed, if it is 1.5 times speed, it is updated to 1 time, and if it is 1 time, it is updated to 0.5 times speed. In addition, when the pressing time of the down key 20D continues for a predetermined time or more, the double speed information may be sequentially updated in the direction of slowing down. Also, in this case, when updating from 1.5 times speed to 1 time speed, the updating of the speed information is terminated at the 1 time speed, and the updating of the speed information is resumed when the down key 20D is pressed again. Good.

  Next, on / off of the double speed information display flag in the double speed information display flag setting area 47 executed by the CPU 41 will be described with reference to FIG. FIG. 6 is a flowchart showing the double speed information display flag setting process. This double speed information display flag setting process is executed when an input instruction relating to reproduction of video content is given from the user.

  First, it is determined whether or not the input instruction from the user is an instruction to change from the normal reproduction mode to another mode (step S11). When the normal playback mode information is stored in the mode information storage area 45, when the ○ button 22A is pressed (when a pause instruction is input), when the left arrow key 20L is pressed (fast reverse mode) Input instruction from the user is changed from the normal playback mode to another time when the right direction key 20R is pressed (when an instruction to change to the fast reverse mode is input). It is determined that this is a mode change instruction.

  When the input instruction from the user is an instruction to change from the normal reproduction mode to another mode (step S11: Yes), the process proceeds to step S12, the double speed information display flag is set to OFF, and the present process ends. That is, the double speed information is not displayed in the pause mode, fast reverse mode, and fast forward mode.

  When the input instruction from the user is not an instruction to change from the normal reproduction mode to another mode (step S11: No), the process proceeds to step S13, and the input instruction from the user is an instruction to change from the other mode to the normal reproduction mode. It is determined whether or not. When the ○ button 22A is pressed in a state where the pause mode information, fast reverse mode information or fast forward mode information is stored in the mode information storage area 45 (when an instruction to change to the normal playback mode is input), It is determined that the input instruction from the user is an instruction to change from another mode to the normal playback mode.

  When the input instruction from the user is an instruction to change from the other mode to the normal playback mode (step S13: Yes), the process proceeds to step S14, and the double speed information stored in the double speed information storage area 46 is the single speed. It is determined whether or not.

  When the double speed information stored in the double speed information storage area 46 is the single speed (step S14: Yes), the process proceeds to step S12, the double speed information display flag is set to OFF, and this process is terminated. That is, when the normal speed mode is changed from the mode other than the normal playback mode and the stored double speed information is 1 time speed, the double speed information is not displayed.

  On the other hand, when the double speed information stored in the double speed information storage area 46 is other than the single speed (step S14: No), the process proceeds to step S15, the double speed information display flag is set to ON, and this process is terminated. That is, when the mode is shifted from the mode other than the normal playback mode to the normal playback mode and the stored double speed information is other than the normal speed, the double speed information is displayed.

  When the input instruction from the user is neither an instruction to change from the normal playback mode to another mode nor an instruction to change from another mode to the normal playback mode (step S11: No, step S13: No), The process proceeds to step S16, and it is determined whether or not a double speed change instruction in the normal reproduction mode is given. When the up key 20U or the down key 20D is pressed while the normal playback mode information is stored in the mode information storage area 45 (when a playback speed up instruction or a generation speed down instruction is input), normal It is determined that the instruction is a double speed change instruction in the playback mode.

  If the input instruction from the user is a double speed change instruction in the normal playback mode (step S16: Yes), the process proceeds to step S15, the double speed information display flag is set to ON, and this process ends. That is, when the double speed change is performed in the normal playback mode, the double speed information is displayed.

  On the other hand, when the input instruction from the user is other than the double speed change instruction in the normal playback mode (step S16: No), the setting of the double speed information display flag is held as it is, and this processing is ended.

  When the input instruction from the user is a reproduction end instruction (when the x button 22D is pressed), the double speed information stored in the double speed information storage area 46 is 1 × speed when the video reproduction process is ended. For example, the double speed information display flag is set to OFF, and is set to ON if the speed is not 1X. That is, when playback is started again after video content playback ends, the playback speed in the normal playback mode is updated at the time of the previous playback regardless of whether the video content is the same video content as the previous video content. If the playback speed is 1 × speed, the speed information is not displayed. If the playback speed is other than 1 × speed, the speed information is displayed.

<Playback function>
The video content is encoded according to a predetermined compression encoding method (for example, MPEG (Moving Picture Experts Group) method), and the optical disk device is used as a PS (Program Stream) in which video data and audio data are packetized and multiplexed together with various header information. 71 is stored in the optical disk 71 or the memory card M. The encoded video data is referred to as a video ES (Video Elementary Stream), and the encoded audio data is referred to as an audio ES (Audio Elementary Stream).
The PS of the optical disk or memory card M is supplied to a demuxer (Demuxre) 31. The demuxer 31 separates the video ES, audio ES, and various header information from the supplied PS, stores the data of each ES in the buffer 73, and outputs the header information to the CPU 41.

  When the mode information stored in the main memory 43 is the normal playback mode information, the demuxer 31 stores all the read PSs in the buffer 73, and when the mode information is the fast reverse mode information or the fast forward mode information, In accordance with the fast reverse / fast forward speed information stored in the main memory 43, the video ES data is intermittently deleted and stored in the buffer 73. The data deletion amount is set to increase as the fast reverse speed and fast forward speed increase. Thereby, the moving image of the video content is displayed on the display unit 3 while being fast-forwarded or fast-forwarded according to the set fast-rewinding speed or fast-forwarding speed. When the mode information is fast reverse mode information or fast forward mode information, only the video ES is stored in the buffer 73 and the audio ES is not stored. Accordingly, no sound is output from the speaker 11 in the fast reverse mode and the fast forward mode.

  When the mode information stored in the main memory 43 is the pause mode information, the supply of PS from the optical disc or the memory card M to the demuxer 31 is temporarily stopped.

  The video ES and audio ES stored in the buffer 73 are supplied to the video decoder 32 and the audio decoder 33, respectively, and decoded. The decoded video data (uncoded video data) is supplied to a video renderer (Video Renderer) 34, and the decoded audio data (uncoded audio data) is supplied to an audio renderer (Audio Renderer) 35. .

  The audio renderer 35 converts the supplied non-encoded audio data into an analog audio signal and outputs it to the sound system 60 (speaker 11). The audio renderer 35 processes the signal waveform of the converted analog audio signal according to the double speed information (reproduction speed in the normal reproduction mode) stored in the main memory 43. When the playback speed is 1x speed, the signal waveform is output to the sound system 60 without being processed. When the playback speed is 1.5x speed and 2x speed, a part of the signal waveform is intermittently deleted. If the playback speed is 0.5 times faster, the signal waveform is expanded. The signal waveform deletion ratio is about 33% when the reproduction speed is 1.5 times speed and about 50% when the reproduction speed is 2 times speed. Further, when the reproduction speed is 0.5 times speed, the signal waveform is partially duplicated to be expanded about twice. The audio renderer 35 also supplies a PTS (Presentation Time Stamp) corresponding to the processed signal waveform to the audio video synthesizer 36.

  The video renderer 34 supplies the supplied non-encoded video data and the corresponding PTS to the audio video synthesizer 36.

  The audio video synthesizer 36 synchronizes with the output of the analog audio signal from the audio renderer 35 to the speaker 11 based on the PTS supplied from the audio renderer 35 and the PTS supplied from the video renderer 34, and the video ES is a graphic system. 50 (display unit 3). That is, in synchronization with the shortening / expansion of the signal waveform of the analog audio signal by the audio renderer 35, the output interval of the video ES from the audio video synthesizer 36 is also shortened / expanded.

  Thereby, when the user sets the normal playback mode (when the normal playback mode information is stored in the main memory 43), the playback speed corresponding to the double speed information stored in the main memory 43 is Audio and video are played. When the user sets the fast reverse mode or the fast forward mode (when the fast reverse mode information or the fast forward mode information is stored in the main memory 43), the fast reverse / fast forward speed information stored in the main memory 43 is displayed. Only the video is played back in a fast-rewind or fast-forward manner at a corresponding fast-reverse speed or fast-forward speed.

<Mode information display function>
Next, mode information display processing executed by the graphic system 50 based on the control of the CPU 41 will be described with reference to FIGS. FIG. 7 is a flowchart showing mode information display processing, FIG. 8 is a schematic diagram of normal playback mode display, FIG. 9 is a schematic diagram of a display mode showing both normal playback mode display and double speed display (single speed), and FIG. FIG. 11 is a schematic diagram of a display mode showing both normal playback mode display and double speed display (1.5 × speed), FIG. 11 is a schematic diagram of a display mode showing both normal playback mode display and double speed display (double speed), and FIG. FIG. 13 is a schematic diagram of a fast-reverse mode display, FIG. 14 is a schematic diagram of a fast-forward mode display, and FIG. 15 is a pause mode. It is a schematic diagram of a display. The mode information display process shown in FIG. 7 is repeatedly executed at predetermined time intervals during reproduction of video content.

  When this process is started, the mode displays 101 to 106 set in advance corresponding to each mode information are displayed together with the playback video of the video content according to the mode information stored in the mode information storage area 45 of the main memory 43. This is displayed on the part 3 (step S21). The display positions of the mode displays 101 to 106 in the display unit 3 are preferably regions that do not disturb the visual recognition of the reproduced video as much as possible, and are displayed at the left corner of the display unit 3 in this embodiment.

  The normal playback mode display 101 is one triangular arrow pointing to the right (FIGS. 8 to 12). The fast reverse mode display 102 is two triangular arrows pointing to the left (FIG. 13). The fast-forward mode display 103 is two triangular arrows pointing to the right (FIG. 14). Above and to the right of the fast-rewind mode display 102 are displays 104 indicating the fast-rewind speed at that time (“fast-rewind 1” and circled number 1 for low speed, “fast-rewind 2” for medium speed, and A circle number 2 is displayed, and in the case of high speed, “fast reverse 3” and a circle number 3) are displayed. Similarly, on the upper and right sides of the fast-forward mode display 103, displays indicating the fast-forwarding speed at that time ("fast-forward 1" and a round numeral 1 for low speed, "fast-forward 2" and a round numeral for medium speed) 2. In the case of high speed, “fast forward 3” and a circled number 3) are displayed. Further, the pause mode display 106 is two vertical lines (FIG. 15).

  Next, with reference to the double speed information display flag setting area 47 of the main memory 43, it is determined whether or not the double speed information display flag is on (step S22).

  When the double speed information display flag is on (step S22: Yes), the double speed displays 111 to 114 set in advance corresponding to each double speed information are displayed adjacent to the normal playback mode display 101, and the change operation is performed. The change operation guidance displays 115 and 116 for informing the guidance information (guidance of the operation method) are displayed adjacently above and / or below the double speed displays 111 to 114 (step S23), and this process is terminated. .

  For example, a double speed display 111 of “× 1.0” is displayed for 1 × speed, a double speed display 112 of “× 1.5” is displayed for 1.5 × speed, and “× 2. A double speed display 113 of “0” is displayed on the right side of the normal playback mode display 101, and a double speed display 114 of “× 0.5” is displayed in the case of 0.5 speed.

  The change operation guidance displays 115 and 116 are used for guiding operation input methods necessary for changing the playback speed. For example, as shown in FIG. 9, in the case of 1 × speed, a triangle arrow pointing upwards above the double speed display 111 of “× 1.0” is displayed as the change operation guidance display 115 and below the double speed display 111. Is displayed as the change operation guidance display 116. The change operation guide display 115 means that the playback speed can be increased by pressing the up direction key 20U, and the change operation guide display 116 shows the playback speed by pressing the down direction key 20D. It means that it can be slowed down. In the case of double speed, since the playback speed cannot be increased any more, only the change operation guide display 116 is displayed. On the other hand, in the case of 0.5 speed, the playback speed is further decreased. Therefore, only the change operation guidance display 115 is displayed.

  On the other hand, when the double speed information display flag is off (step S22: No), this process is terminated without displaying the double speed displays 111 to 114 and the change operation guidance displays 115 and 116.

  As described above, when the input instruction from the user is an instruction to change from the normal playback mode to another mode, the double speed information display flag is set to OFF, so the determination in step S22 is No. That is, in the pause mode, fast reverse mode, and fast forward mode, the double speed displays 111 to 114 and the change operation guidance displays 115 and 116 are not displayed.

  In addition, when the input instruction from the user is an instruction to change from another mode to the normal playback mode and the double speed information stored in the double speed information storage area 46 is the single speed, the double speed information display flag is set to OFF. Therefore, the determination in step S22 is No. That is, when the normal speed mode is changed from the mode other than the normal playback mode and the stored double speed information is 1 speed, the double speed displays 111 to 114 and the change operation guidance displays 115 and 116 are not displayed. .

  On the other hand, when the input instruction from the user is an instruction to change from another mode to the normal playback mode and the double speed information stored in the double speed information storage area 46 is other than the single speed, the double speed information display flag is turned on. Since it is set, the determination in step S22 is Yes. That is, when the normal speed mode is changed from the mode other than the normal playback mode and the stored double speed information is other than the normal speed, the double speed displays 111 to 114 and the change operation guidance displays 115 and 116 are displayed. Is done.

  When the input instruction from the user is a double speed change instruction in the normal playback mode, the double speed information display flag is set to ON, so the determination in step S22 is Yes. That is, when the double speed change is performed in the normal reproduction mode, the double speed displays 111 to 114 and the change operation guidance displays 115 and 116 are displayed.

  Further, when the input instruction from the user is a playback end instruction, when the video playback process is ended, if the double speed information stored in the double speed information storage area 46 is 1 × speed, the double speed information display flag is set to OFF. If it is other than 1 × speed, it is set to ON. That is, when playback is started again after video content playback ends, the playback speed in the normal playback mode is updated at the time of the previous playback regardless of whether the video content is the same video content as the previous video content. If the playback speed is 1 × speed, the double speed displays 111 to 114 and the change operation guide displays 115 and 116 are not displayed. If the playback speed is other than 1 × speed, the double speed displays 111 to 114 and the change operation guide display 115 are displayed. 116 is displayed.

  Note that an upper limit value of the display time may be set for the mode display, the double speed display, and the change operation guidance display so that the same display is not continuously displayed over a predetermined time.

(2) Operation Next, an operation according to the present embodiment will be described with reference to FIG. FIG. 16 is a flowchart showing transition of the state of the display screen according to the present embodiment.

  When the user displays a menu screen on the display unit 3 and appropriately operates each direction key 20U, 20D, 20L, 20R to specify one video content as a playback target on the menu screen and presses the ○ button 22A, The identified video content is played back in the normal playback mode. In the normal playback mode at the start of playback, video content is played according to the playback speed stored as the double speed information. In FIG. 16, the reproduction screen SG1 when the stored double speed information is 1 × speed, the reproduction screen SG2 when 1.5 × speed, the reproduction screen SG3 when 2 × speed, and the case of 0.5 × speed are shown. A reproduction screen SG4 is shown arranged vertically. Further, only the normal playback mode display 101 (an enlarged view is shown in FIG. 8) is displayed on the playback screen SG1 when the stored playback speed is 1 × speed (standard speed). On the other hand, in cases other than 1 × speed, normal playback mode display, double speed display, and change operation guidance display are displayed. For example, the normal playback mode display 101, the double speed display 112, and the change operation guidance displays 115 and 116 (shown in an enlarged view in FIG. 10) are displayed on the playback screen SG2 in the case of 1.5 times speed. The playback screen SG3 displays a normal playback mode display 101, a double speed display 113, and a change operation guidance display 116 (an enlarged view is shown in FIG. 11). A display 101, a double speed display 114, and a change operation guidance display 115 (an enlarged view is shown in FIG. 12) are displayed.

  In the normal playback mode, when the user presses the up key 20U or the down key 20D (inputs a playback speed up instruction or a down instruction), the playback speed is increased or decreased stepwise in accordance with the instruction. Further, the mode display is changed along with the change in the reproduction speed, and the double speed display and the change operation guidance display are changed. Note that the double speed display and the change operation guidance display in the case of 1.5 times speed, 2 times speed, and 0.5 times speed are the same as those in the reproduction screens SG2, SG3, SG4 immediately after the start of the reproduction. In addition, when the reproduction speed is changed, the double speed display and the change operation guidance display are also displayed when the reproduction is performed at the single speed. That is, at the time of playback at 1 × speed immediately after the start of playback, the speed display and the change operation guidance display are not displayed, but the playback screen (not shown) when the playback speed is changed and returned to 1 × speed in this state is displayed. As shown in FIG. 9, in addition to the normal playback mode display 101, a double speed display 111 and change operation guidance displays 115 and 116 are displayed.

  Further, when the user presses the left arrow key 20L during playback of the video content, the video content is transferred to the fast reverse mode, and the video content is played back at a low speed. During this fast reverse playback, only video is output and no audio is output. In the fast reverse mode, when the user presses the left direction key 20L, the fast reverse speed increases stepwise (low speed → medium speed → high speed). In FIG. 16, a playback screen SG5 at the time of fast rewinding at a low speed, a playback screen SG6 at the time of fast rewinding at a medium speed, and a playback screen SG7 at the time of fast rewinding at a high speed are shown arranged vertically. . In each replay screen SG5, SG6, SG7 at the time of fast rewind, a fast rewind mode display 102 and a display 104 indicating the fast rewind speed at that time are displayed. The display 104 includes the characters “fast reverse 1” and a circle number 1 (shown in an enlarged view in FIG. 13) in the case of low speed, and the characters “circle fast reverse 2” and the circle number 2 in the case of medium speed. In the case of high speed, it includes the characters “fast reverse 3” and the circled number 3.

  Further, when the user presses the right direction key 20R during the reproduction of the video content, the video content is shifted to the fast forward mode, and the video content is reproduced at a low speed. During this fast forward playback, only video is output and no audio is output. When the user presses the right direction key 20R in the fast-forward mode, the fast-forward speed is increased stepwise (low speed → medium speed → high speed). In FIG. 16, a reproduction screen SG8 at the time of fast-forwarding at low speed, a reproduction screen SG9 at the time of fast-forwarding at medium speed, and a reproduction screen SG10 at the time of fast-forwarding at high speed are shown arranged vertically. Each fast-forward playback screen SG8, SG9, SG10 displays a fast-forward mode display 103 and a display 105 indicating the fast-forward speed at that time. The display 105 includes the characters “fast forward 1” and a circle number 1 (shown in an enlarged view in FIG. 14) in the case of low speed, and includes the characters “fast forward 2” and the circle number 2 in the case of medium speed. In the case of a high speed, the characters “fast forward 3” and the circled number 3 are included.

  In addition, when the user presses the ○ button 20A during playback of video content in the normal playback mode, the video content is displayed as a still image (not shown) by shifting to the pause mode. In this still image, a pause mode display 106 shown in FIG. 15 is displayed.

  Furthermore, when the user presses the ○ button 22A (inputs a change instruction to the normal playback mode) in the fast reverse mode, fast forward mode, or pause mode, the video content is played back in the normal playback mode. At this time, when the playback speed stored as the double speed information is 1 * speed, the video content is played back at 1 * speed and only the normal playback mode display 101 is displayed as shown in the playback screen SG1. On the other hand, when the reproduction speed stored as the double speed information is other than the single speed, the video content is reproduced at the reproduction speed (double speed), and the normal reproduction mode is displayed as shown in the reproduction screens SG2, SG3, and SG4. A display 101, double speed displays 112, 113, 114 and change operation guidance displays 115, 116 are displayed.

  Thus, according to the present embodiment, video and audio can be played back at a speed according to the user's request in the normal playback mode. That is, when viewing the video content, the user can reproduce and view the video content at a speed appropriate for him / her, which is convenient.

  In addition, when the playback speed is changed in the normal playback mode, a double speed display is displayed in accordance with the change, so that the user can easily recognize the current playback speed.

  Further, since the change operation guidance display is displayed together with the double speed display, the user can easily perform an operation when changing the reproduction speed.

  In addition, when the playback speed stored as the double speed information is 1 time speed at the start of video content playback or when changing from another mode to the normal playback mode, the double speed display and the change operation guidance display are not displayed. That is, when the user has not performed any operation for changing the reproduction speed in the normal reproduction mode, the normal speed display and the change operation guidance display are not always displayed in the normal reproduction mode. Therefore, for users who do not perform any operation for changing the playback speed, troublesome display is not performed, which is convenient.

  On the other hand, when the playback of video content is started or when the playback mode is changed from another mode to the normal playback mode, if the playback speed stored as the double speed information is other than the single speed, the double speed display and the change operation guidance display are displayed. . That is, when the user performs a change operation of the playback speed in the normal playback mode and the playback speed in the normal playback mode is set to a speed other than 1 × speed, the normal speed mode and the change operation guidance display are always displayed in the normal playback mode. Is displayed. Therefore, a user who has set the playback speed in the normal playback mode to a speed other than 1 × can recognize the playback speed at the start of the normal playback mode, which is convenient.

[Embodiment 2]
Next, a second embodiment of the present invention will be described. Hereinafter, description of portions common to the first embodiment will be omitted.

  In the present embodiment, the main memory 43 has a table (see FIG. 17) in which video content categories are associated with playback speed (double speed information) in the normal playback mode. Each category and double speed information may be set in advance. Further, in accordance with a user's double speed change instruction executed while viewing the video content in the normal playback mode, the double speed information of the category of the video content may be set and stored. Further, it may be set by a predetermined operation input from the user to the operation input unit 2.

  In the present embodiment, when the video content is stored in a storage medium (such as an optical disk or a memory card M) in a state that includes category information representing the category, the CPU 41 starts playback of the video content. The category information representing the category of the video content is acquired from the storage medium, the double speed information (category double speed information) corresponding to the acquired category information is read from the table (FIG. 17), and the double speed information in the double speed information storage area 46 is read. Update to double speed information.

  According to this embodiment, the user can view the video content at an appropriate playback speed corresponding to the category without requiring an operation for changing the playback speed.

  Further, each category and double speed information in the table can be changed by the user, so that each user can view the video content at a playback speed appropriate for the user without requiring a playback speed change operation. .

[Embodiment 3]
Next, a third embodiment of the present invention will be described. Hereinafter, description of portions common to the first embodiment will be omitted.

  In the present embodiment, the main memory 43 has a table (see FIG. 18) in which each video content (CTS1, CTS2, CTS3...) Stored in the storage medium is associated with a playback speed (double speed information). . As each double speed information, the latest double speed information that has been changed or set when the user actually viewed the video content in the normal playback mode may be set and stored, and a predetermined operation from the user to the operation input unit 2 may be performed. It may be set by input.

  In the present embodiment, when viewing the previously viewed video content again, the CPU 41, when starting playback of the video content, displays a table of double speed information (double speed information for each content) corresponding to the video content (FIG. 18). ) And the double speed information in the double speed information storage area 46 is updated to the read double speed information.

  According to the present embodiment, when the user repeatedly views the same video content, the user can view the video content at an appropriate playback speed without requiring an operation for changing the playback speed. For example, when the video content CTS2 is an English conversation course, and the video content CTS2 (English conversation course) is viewed at a slow playback (0.5 times speed) and then the video content CTS2 (English conversation course) is viewed again, the playback speed It is possible to view with slow playback without requiring any change operation.

  In the second or third embodiment, the category-specific double speed information and the content-specific double speed information may be handled in the same manner as the single speed (standard speed) of the first embodiment. For example, when the playback mode is changed from the other mode to the normal playback mode, when playback is performed at a playback speed corresponding to the category-specific double speed information or the content-specific double speed information, the double speed display and the change operation guidance display are not displayed, When playback is performed at a playback speed (including 1 × speed) other than the playback speed corresponding to information and double speed information for each content, double speed display and change operation guidance display may be displayed.

  In each of the above-described embodiments, the portable terminal device 1 has been described as an example. However, the present invention is not limited to this, and various devices (for example, DVD playback) having a video content playback function. The present invention can be applied to a device, an HDD playback device, and the like.

  That is, the description of each embodiment described above is an example of the present invention, and the present invention is not limited to the above-described embodiment, and the above-described embodiment is within the scope of the technical idea of the present invention. It goes without saying that various modifications can be made in other than the embodiment.

  The present invention is suitable for use in a playback apparatus that plays back video content.

It is a figure which shows the main body front surface of the terminal device which concerns on one Embodiment of this invention. It is a figure which shows the main body back surface of the terminal device of FIG. FIG. 2 is a block diagram illustrating an example of a schematic electrical configuration of a main part of the terminal device of FIG. 1. It is a block diagram which shows typically the functional structure of the terminal device of FIG. FIG. 4 is a block diagram schematically showing the main memory of FIG. 3. It is a flowchart which shows a double speed information display flag setting process. It is a flowchart which shows display processing, such as mode information. It is a schematic diagram of normal playback mode display. It is a schematic diagram of a display mode showing both normal playback mode display and double speed display (single speed). It is a schematic diagram of a display mode showing both normal playback mode display and double speed display (1.5 times speed). It is a schematic diagram of a display mode showing both normal playback mode display and double speed display (double speed). It is a schematic diagram of a display mode showing both normal playback mode display and double speed display (0.5 times speed). It is a schematic diagram of a fast reverse mode display. It is a schematic diagram of fast-forward mode display. It is a schematic diagram of a pause mode display. It is a flowchart which shows the transition of the state of the reproduction | regeneration screen which concerns on this embodiment. It is a figure which shows typically the table which matched the category of video content, and double speed information. It is a figure which shows typically the table which matched video content and double speed information.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 ... Terminal device, 2 ... Operation input part, 3 ... Display part, 5 ... Infrared port, 11 ... Speaker, 12 ... Microphone, 40 ... Control system, 41. ..CPU, 42 ... peripheral device control unit, 43 ... main memory, 44 ... ROM, 50 ... graphic system, 51 ... GTE, 52 ... GPU, 53 ... frame Buffer, 60 ... Sound system, 61 ... SPU, 62 ... Sound buffer, 70 ... Optical disk controller, 71 ... Optical disk device, 72 ... Decoder, 73 ... Buffer, 74 ... Sub CPU, 80 ... Wireless communication unit, 90 ... Interface unit, 91 ... PIO, 92 ... SIO, 101 ... Normal playback mode display (mode display), 102 ... Fast reverse mode Mode display (mode display), 103 ... fast-forward mode display (mode display), 106 ... pause mode display (mode display), 111 to 114 ... double speed display, 115 and 116 ... change operation guidance Display, M ... Memory card

Claims (12)

A playback device for playing back video content stored in a storage medium in a playback mode designated by a user among a plurality of playback modes including a normal playback mode,
Reproduction means for displaying the video content on the display screen and outputting audio synchronized with the video by reproducing the video content at a reproduction speed instructed by the user in the normal reproduction mode;
Storage means for storing the changed playback speed when a change in playback speed is instructed by the user in the normal playback mode;
A speed information display means for displaying information indicating the playback speed after the change on the display screen when a change in playback speed is instructed by the user in the normal playback mode;
The playback means starts playback of the video content at a playback speed stored in the storage means at the start of playback of the video content in the normal playback mode;
When the playback speed stored in the storage means is a predetermined standard speed at the start of playback of the video content in the normal playback mode, the speed information display means displays information indicating the predetermined standard speed. When the playback speed stored in the storage means is not the predetermined standard speed without being displayed on the display screen, information indicating the playback speed stored in the storage means is displayed on the display screen. A playback device. The playback apparatus according to claim 1,
The playback apparatus, wherein the playback of the video content in the normal playback mode includes a time when the playback mode of the video content is changed from a playback mode other than the normal playback mode to the normal playback mode. The playback apparatus according to claim 1 or 2, wherein
The speed information display means displays information for guiding an operation required for changing the playback speed on the display screen when displaying information indicating the playback speed. The playback device according to any one of claims 1 to 3,
The storage means stores a category-specific playback speed associated with each video content category,
The playback device plays back the video content at a playback speed by category corresponding to the video content until the user instructs to change the playback speed in the normal playback mode. The playback apparatus according to any one of claims 1 to 4,
The storage means stores content-specific playback speeds respectively associated with video content stored in the storage medium,
The playback device plays back the video content at a playback speed for each content corresponding to the video content until the user instructs to change the playback speed in the normal playback mode. A video playback method for playing back video content stored in a storage medium in a playback mode designated by a user among a plurality of playback modes including a normal playback mode,
A playback step for playing back the video content at a playback speed instructed by a user in the normal playback mode so that the video of the video content is displayed on a display screen and audio synchronized with the video is output; ,
A storage step in which the storage means stores the changed playback speed when a change in playback speed is instructed by the user in the normal playback mode;
A first speed information display step in which, when a change in playback speed is instructed by the user in the normal playback mode, speed information display means displays information indicating the changed playback speed on the display screen;
A playback start step in which the playback unit starts playback of the video content at a playback speed stored in the storage unit at the start of playback of the video content in the normal playback mode;
At the start of playback of the video content in the normal playback mode, if the playback speed stored in the storage means is a predetermined standard speed, the speed information display means displays information indicating the predetermined standard speed. When the playback speed stored in the storage means is not the predetermined standard speed without being displayed on the display screen, the speed information display means displays information indicating the playback speed stored in the storage means in the display screen. And a second speed information display step for displaying the video information. A computer of a playback device for playing back video content stored in a storage medium in a playback mode designated by a user among a plurality of playback modes including a normal playback mode,
Reproduction means for displaying the video content on the display screen and outputting audio synchronized with the video by reproducing the video content at a reproduction speed instructed by the user in the normal reproduction mode;
Storage means for storing the changed playback speed when a change in playback speed is instructed by the user in the normal playback mode, and playback after a change in the normal playback mode Speed information display means for displaying information indicating speed on the display screen;
Is a video playback program to function as
The playback means starts playback of the video content at a playback speed stored in the storage means at the start of playback of the video content in the normal playback mode;
When the playback speed stored in the storage means is a predetermined standard speed at the start of playback of the video content in the normal playback mode, the speed information display means displays information indicating the predetermined standard speed. When the playback speed stored in the storage means is not the predetermined standard speed without being displayed on the display screen, information indicating the playback speed stored in the storage means is displayed on the display screen. Feature video playback program. The video playback program according to claim 7,
The video playback program characterized in that the start of playback of the video content in the normal playback mode includes the change of the playback mode of the video content from a playback mode other than the normal playback mode to the normal playback mode. The video playback program according to claim 7 or 8,
The speed information display means, when displaying information indicating the playback speed, displays information for guiding an operation necessary for changing the playback speed on the display screen. A video reproduction program according to any one of claims 7 to 9,
The storage means stores a category-specific playback speed associated with each video content category,
The playback unit plays back the video content at a playback speed by category corresponding to the video content until a change in playback speed is instructed by the user in the normal playback mode. A video reproduction program according to any one of claims 7 to 10,
The storage means stores content-specific playback speeds respectively associated with video content stored in the storage medium,
The playback unit plays back the video content at a playback speed for each content corresponding to the video content until the user instructs to change the playback speed in the normal playback mode.   The computer-readable storage medium which memorize | stored the video reproduction program in any one of Claims 7-11.

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