JP4097567B2 - Information recording / reproducing device - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to an information recording / reproducing apparatus having a line-of-sight detection unit, and more particularly to an information recording / reproducing apparatus for quickly searching for a specific frame in an information file during reproduction of an information file recorded on a recording medium.
[0002]
[Prior art]
In the information recording / reproducing apparatus in the prior art, after the user finishes reproducing the information file recorded on the recording medium halfway, if the user tries to see the continuation of the information file recorded on the recording medium at a later date, the file The frame is searched by starting playback from the beginning and fast-forwarding to the desired frame of the file. Further, in the prior art, there is disclosed a holding means for holding reproduced information that can specify a frame that has been reproduced in the past (see Patent Document 1).
[0003]
[Patent Document 1]
JP-A-11-176096
[0004]
[Problems to be solved by the invention]
However, in the above-described conventional information recording / reproducing apparatus, every time an information file recorded on a recording medium is reproduced, the user searches for a frame that has already been reproduced or an unreproduced frame by using a function such as fast-forwarding. There is a problem that it takes time and effort. On the other hand, in the technique described in Patent Document 1 (Japanese Patent Laid-Open No. 11-176096), it is only possible to record whether or not it has been played back, and whether or not the user has actually seen it, that is, whether or not it has been played back. There is a problem that cannot be judged. For example, if the user goes to sleep during playback and the information recorded on the recording medium is played back to the end, the above-mentioned technique is recorded as played back, even though the frame is not actually viewed by the user. There is a problem that it becomes a target of erasure.
[0005]
Accordingly, the present invention has been made in view of the above-described problems of the prior art, and information that allows a user to quickly search for a reproduced frame or an unreproduced frame in an information file. A recording / reproducing apparatus is provided.
[0006]
[Means for Solving the Problems]
An information recording / reproducing apparatus according to the present invention includes a line-of-sight detection unit that outputs a line-of-sight detection signal indicating the presence or absence of a user's line of sight, and the line-of-sight detection unit when reproducing a frame of an information file recorded on a recording medium. Recording / reproducing control means for recording the gaze presence / absence state for each frame.
[0007]
In the information recording / reproducing apparatus according to the present invention, when the frame is reproduced, the recording / reproduction control unit reads the gaze presence / absence state recorded in the frame, and the gaze presence state is recorded for a predetermined period. The present invention is characterized by comprising skip control means for skipping a frame being read.
[0008]
In the information recording / reproducing apparatus according to the present invention, the skip control means provides a threshold time for comparing the time when the visual line detection signal presence / absence state is recorded, and records the state where the visual line detection signal is present for the threshold time or longer. The frame having the set time is surely skipped.
[0009]
In the information recording / reproducing apparatus according to the present invention, the skip control means provides a threshold time for comparison with the time when the gaze presence / absence state is recorded, and the time when the gaze presence state is recorded more than the threshold time The frame having the above is skipped.
[0010]
The information recording / reproducing apparatus according to the present invention further comprises threshold time setting change control means for changing the threshold time, and the threshold time setting change control means sends the skip control means to the skip control means according to the content of the frame. The threshold time is changed so as to skip frames.
[0011]
According to the information recording / reproducing apparatus of the present invention, when searching for a frame of an information file, a frame that has not been searched for is searched for by searching for a frame that has not been searched by comparing the time when the line-of-sight detection signal is not present and the threshold time. It is possible to prevent an erroneous determination such as determining that it has been performed. Furthermore, the threshold time can be changed in accordance with the contents of the information file, and erroneous determination can be reduced.
[0012]
The information recording / reproducing apparatus according to the present invention is characterized by comprising visual line clear control means for setting all the visual line detection signal presence / absence states recorded in the frame of the information file to no state.
[0013]
According to the information recording / reproducing apparatus of the present invention, when another user searches for an information file reproduced many times, it can be handled in the same manner as a file reproduced for the first time.
[0014]
The information recording / reproducing apparatus according to the present invention displays the gaze presence / absence state on a display that displays the frame in order to make a user check whether the gaze presence / absence state is a searched or unsearched frame. A visual line display control means for displaying is provided.
[0015]
In the information recording / reproducing apparatus according to the present invention, when the line-of-sight display control means searches for the absence of the frame in which the line-of-sight signal non-state is recorded during the file reproduction, the information file is not searched. A message informing that the frame does not exist is displayed on the display.
[0016]
According to the information recording / reproducing apparatus of the present invention, it is possible to easily notify the user that there is no unsearched frame among the frames.
[0017]
In the information recording / reproducing apparatus according to the present invention, the line-of-sight detection signal detection unit outputs an image input unit that inputs an image of a user's black eye part in order to detect the user's line-of-sight detection signal, and is output from the image input unit. A black eye position setting unit for setting the size and position of the black eye frame area of the black eye part, and various image features for determining that the image of the black eye frame area includes the black eye part. Comparing the feature amount of the image of the black eye frame region set by the black eye position setting unit with the image information from the black eye determination unit, and determining that the image in the image region is the black eye And a line-of-sight determination unit that determines a portion.
[0018]
As described above, the information recording / reproducing apparatus according to the present invention records the presence / absence of the line-of-sight detection signal indicating whether or not the user has actually seen during the reproduction of the frame, and then saves it in the recording medium. Providing an information recording / playback device that can quickly search for frames that have not been viewed by the user using skip control means while reading the presence / absence of the line-of-sight detection signal from the frame and displaying it on the display. By doing so, the above problems are solved.
[0019]
DETAILED DESCRIPTION OF THE INVENTION
Embodiments of the present invention will be described below with reference to the drawings.
[0020]
FIG. 1 is a functional block diagram of an information recording / reproducing apparatus according to an embodiment of the present invention.
[0021]
The information recording / reproducing apparatus 1 includes a control unit 101, a direct memory access controller (hereinafter referred to as a DMA controller) 102, a memory 103, an image compression / decompression unit 104, a recording medium 105, a display 106, a line-of-sight detection unit 107, a skip switch 108, and a clear switch. A switch 109, a time setting change unit 110, and a line-of-sight flag rewrite permission switch 111 are provided.
[0022]
A schematic operation of the information recording / reproducing apparatus 1 when reproducing the file recorded on the recording medium 105 in the information recording / reproducing apparatus 1 having such a configuration will be described.
[0023]
Each frame of the file is temporarily stored in the memory 103 according to the DMA controller 102 under the control of the control unit 101. Further, the frame stored in the memory 103 is transferred to the image compression / decompression unit 104 according to the DMA controller 102 and decompressed. The expanded frame is reproduced by being OSD-displayed on the display 106 via the DMA controller 102.
[0024]
Here, each frame of the file is usually compressed in the data and recorded in the recording medium 105. The frame includes a moving image frame.
[0025]
Hereinafter, an operation for quickly searching for a desired frame from the frames reproduced in this way will be described.
[0026]
FIG. 2 is a schematic configuration diagram showing each unit of the control unit 101 of the information recording / reproducing apparatus 1 according to the present invention.
[0027]
The line-of-sight detection unit 107 generates a line-of-sight detection signal 112 indicating whether or not the user is actually viewing the contents of the frame. In other words, the line-of-sight detection signal 112 is a signal representing the state of presence or absence of the line of sight. Note that the frame here means one unit having a data amount including information for one screen displayed on the display 106 in one file and other information indicating attributes of the screen.
[0028]
The line-of-sight detection signal 112 is sent to a recording / reproduction control unit (hereinafter referred to as a line-of-sight flag recording / reproduction control unit) 120 of the control unit 101. The line-of-sight flag recording / reproducing control means 120 can convert the line-of-sight detection signal 112 into a data format that can be recorded in the frame and write it in the attribute area of the frame. This converted signal is referred to as a line-of-sight flag, and is a signal used for frame identification or display. When the line-of-sight detection signal 112 is in the line-of-sight presence state, the line-of-sight flag represents the line-of-sight flag “ON”. Further, when the line-of-sight detection signal 112 is in the state of no line of sight, the line-of-sight flag represents the line-of-sight flag “OFF”. A specific operation of the line-of-sight detection unit 107 that generates the line-of-sight detection signal 112 will be described later.
[0029]
First, the line-of-sight flag writing operation in the case of reproducing the frame of the file recorded on the recording medium 105 will be described.
[0030]
The line-of-sight flag converted from the line-of-sight detection signal 112 is recorded in the frame currently being reproduced by the line-of-sight flag recording / reproducing control means 120.
[0031]
When the line-of-sight flag is “ON”, the line-of-sight flag is set (set = “ON”) and recorded in the currently reproduced frame. On the other hand, when the line-of-sight flag is “OFF”, the line-of-sight flag is cleared (clear = “OFF”) and recorded in the currently reproduced frame.
[0032]
In this case, the line-of-sight flag “ON” may be represented by “1” of the digital signal, and the line-of-sight flag “OFF” may be represented by “0”.
[0033]
Next, the line-of-sight flag reading operation when the frame of the file recorded on the recording medium 105 is reproduced will be described.
[0034]
As described above, the line-of-sight flag recording / reproduction control means 120 reads the state of the line-of-sight flag stored in the currently reproduced frame, that is, the line-of-sight flag “ON / OFF”, as in the line-of-sight flag writing operation. It is. Thus, when the frame is read again, whether or not the user has actually seen the contents of the frame being reproduced by detecting the state of the line-of-sight flag whether the line-of-sight flag is "ON" or "OFF" Can be easily determined. Further, the state of the read line-of-sight flag is displayed on the display 106 as OSD. This makes it easy for the user to determine whether the frame has been viewed.
[0035]
As described above, only when the user actually sees the frame, the line-of-sight flag “ON” is recorded in the frame, and when the frame is searched again, “ON / OFF” of the line-of-sight flag is read out. Thus, it is possible to easily identify whether or not the contents of the frame have been viewed. Further, the user can easily confirm whether or not the user has seen the frame by viewing the line-of-sight flag displayed on the display 106.
[0036]
Here, the case where the line-of-sight flag is written in the frame at the time of reproducing the frame is a case where the user actually observes the frame and determines whether or not the contents of the frame are viewed. When writing this line-of-sight flag to a frame, it is a procedure to read the line-of-sight flag already recorded in the frame and then writing the line-of-sight flag from the line-of-sight detection unit. If the line-of-sight flag converted from the line-of-sight detection signal is “ON” in spite of being “ON”, “OFF” may be written in the frame. In order to prevent such a state reliably, a flag rewrite permission switch 111 is provided.
[0037]
The line-of-sight flag can be rewritten only when the permission switch is in the “permitted” state.
[0038]
When frames are reproduced for the first time, they are recorded in all frames and recorded with the line-of-sight flag cleared (OFF).
[0039]
FIG. 3 is a flowchart of the line-of-sight flag writing operation during frame reproduction.
[0040]
When the reproduction operation is started (step S 1), the frame of the file compressed and recorded on the recording medium 105 is stored in the memory 103 via the DMA controller 102. The frame data written in the memory 103 is sent from the memory 103 to the image compression / decompression unit 104 via the DMA controller 102, decompressed, stored again in the memory 103, and sent to the display 106 via the DMA controller 102. Sent and displayed (step S2). At this time, the line-of-sight flag recording / reproducing control unit 120 of the control unit 101 reads the line-of-sight flag “ON / OFF” written in the frame, and displays the line-of-sight flag on the display 106 (step S3).
[0041]
Next, it is determined whether or not the reproduction operation is finished (step S4). If it is finished, the line-of-sight flag recording / reproduction control means 120 ends the line-of-sight flag writing process (step S4; Yes). When it is determined that it is not finished (step S4; No), the line-of-sight flag recording / reproducing control unit 120 determines whether or not the line-of-sight flag rewrite is in the “permitted” state (step S5). If it is in the “non-permitted” state (step S5; no), the stored state of the original line-of-sight flag is not changed regardless of the line-of-sight flag “ON / OFF”, and the process returns to step S2 to Continue playback state. On the other hand, if the state is “permitted” (step S5; yes), the line-of-sight flag recording / reproducing control unit 120 determines whether the line-of-sight flag is “ON / OFF” (step S6). When the line-of-sight flag is “ON” (step S6; yes), the line-of-sight flag recording / reproducing control unit 120 records the line-of-sight flag “ON” in the frame. Further, the line-of-sight flag “ON” time is integrated by the line-of-sight recording time calculation control means (hereinafter referred to as line-of-sight flag time calculation means) 122. Thereafter, the line-of-sight flag recording / reproducing control means 120 performs image compression processing on the decompressed frame data in the memory 103 again by the image compression / decompression unit 104 and records it on the recording medium 105 (step S7), and returns to step S2. Continue playback. On the other hand, when the line-of-sight flag is “OFF” (step S6; no), the line-of-sight flag recording / reproducing control unit 120 records the line-of-sight flag “OFF” in the frame. Further, the frame “OFF” time is integrated by the line-of-sight flag time calculation means 122. Thereafter, the line-of-sight flag recording / reproducing control means 120 performs image compression processing on the decompressed frame data in the memory 103 again by the image compression / decompression unit 104 and records it on the recording medium 105 (step S8), and returns to step S2. Continue playback.
[0042]
As a result, the user can easily determine whether the currently played frame is a frame that has been viewed in the past. Further, the skip operation described below can be easily performed by referring to the above-described accumulated line-of-sight flag times of the line-of-sight flags “ON” and “OFF”.
[0043]
Here, the aggregate of frames corresponding to the above-mentioned line-of-sight flag time accumulated independently by the line-of-sight flag time calculation means 122 for each of the line-of-sight flags “ON” and “OFF” is referred to as a scene. Further, when the last frame of each scene is finished, a number for identifying this scene is given by the line-of-sight flag recording / playback control means 120 and recorded in the attribute area of the last frame. At the same time, the line-of-sight flag time accumulated in the attribute area is also recorded.
[0044]
Next, a skip operation for cueing a scene by the line-of-sight flag recording / reproducing control means 120 using the line-of-sight flag at high speed will be described.
[0045]
FIG. 4 is a diagram illustrating an example of the line-of-sight flag “ON / OFF” recorded in the scene.
[0046]
FIG. 5 is a flowchart showing a skip operation when a scene that has been played once or more is skipped.
[0047]
As shown in FIG. 4, this file is reserved for 10 minutes (scene number N1) once during playback by the user, once for 20 minutes (scene number N3), and finally for M minutes. (Scene No. N5) is an example in the case where there are three scenes with the line-of-sight flag “OFF” in the case of falling asleep. The other scenes are scenes having a line-of-sight flag “ON”.
[0048]
In order to give generality to the scene number, the scene number is represented by N0, and the subsequent scene numbers are represented by N1, N2,.
[0049]
Further, the line-of-sight flag “ON / OFF” times are represented by T0, T1, T2,... Corresponding to the scene numbers N0, N1, N2,.
[0050]
Here, as described above, the scene number N and the line-of-sight flag time T are the last frame of the scene in which the scene number N and the line-of-sight flag time T are recorded when the scene is reproduced again. Read by searching the attribute area. Further, for example, the file number N and the line-of-sight flag “ON / OFF” time T may be stored in a predetermined area of the file area.
[0051]
If the skip switch 108 is pressed during reproduction of the scene N0 having the line-of-sight flag “ON”, a command signal for skipping this scene is generated.
[0052]
The skip control means 121 of the control unit 101 captures the command signal to be skipped, and then compares the threshold time described below with the line-of-sight flag “OFF” time T of the scene N recorded in the clear state. . As a result of the comparison, if the line-of-sight flag “OFF” time T is greater than the threshold time, it is determined that the scene has not yet been grasped. In the example shown in FIG. 4, the scene has the scene number N1. In this case, the reproduction operation is started from the beginning of the scene and the reproduction operation is performed until the end of the scene. By this reproduction operation, the unsearched scene becomes a searched scene with the line-of-sight flag recorded from “OFF” to “ON”.
[0053]
On the other hand, when the threshold time is larger than the clear time T, it is determined that the scene is skipped at this threshold time although the contents are not grasped, and a message for requesting a change of the threshold time is issued.
[0054]
The skip switch 108 may be a piezoelectric contactless switch.
[0055]
As described above, the skip control means 121 can quickly search for an unsearched scene and reproduce it.
[0056]
Next, the threshold time will be described.
[0057]
Here, the threshold time is a threshold time for determining that the scene is not searched if the time of the line-of-sight flag “ON” of the searched frame does not exceed the threshold time.
[0058]
The threshold time setting changing unit 110 sets the threshold time. The set threshold time is read by the threshold time setting change control means 124 before starting the reproduction operation. The threshold time setting changing unit 110 may be a normal thumbwheel switch.
[0059]
Thereby, when searching for a scene, it is possible to prevent erroneous determination such as determining that an unsearched scene has been searched. Further, the threshold time can be changed by multiplying the read threshold time by a coefficient in accordance with the contents of each frame of the scene. For example, the content of the frame includes a frame such as a moving image frame and a text frame. In this way, by changing the threshold time according to the contents of the frame, it is possible to reduce these erroneous determinations.
[0060]
When the clear switch 109 is pressed, all the line-of-sight flags recorded in the frame are cleared by the line-of-sight detection clear unit 123 of the control unit 101. This makes it possible to handle a file that has been played many times in the same way as a file that is played for the first time when another user views it.
[0061]
Next, the skip operation when the threshold time is changed will be described with reference to FIG.
[0062]
When the playback operation is started with the threshold time set to 10 minutes, when the skip switch 108 is pressed first, the line-of-sight flag “OFF” time of the scene N1 is 10 minutes, so the process skips to the frame N1. Accordingly, playback starts from the scene N1. When the skip switch 108 is pressed again in the normal playback mode after the playback of the scene N1 is finished, the scene N3 is skipped to the sight line flag “OFF” time, and playback is started. Further, when the skip switch 108 is pressed during normal reproduction after the reproduction of the scene N3 is completed, the scene N5 is reproduced. Here, assuming that the threshold time is set to 15 minutes, when the skip switch 108 is first pressed, reproduction is started from the scene N3 instead of the scene N1. When the skip switch 108 is pressed again during normal playback after the playback of the scene N3 is completed, the scene N5 is played back, skipping to the scene N5.
[0063]
Here, it is assumed that the M time that is the line-of-sight flag “OFF” time of the scene N5 is longer than the threshold time of 15 minutes.
[0064]
The skip operation described above will be described with reference to the flowchart of FIG.
[0065]
Until the user presses the skip switch 108, the steps from S1 to S8, which are normal reproduction operations, are the same. It is determined whether or not the skip switch 108 has been pressed (step S10). Next, if it is determined that the skip switch 108 has been pressed (step S10; yes), the skip control means 121 of the control unit 101 once stops the playback operation of the current scene N and sets the line-of-sight flag “OFF” from the file. The scene N that the user has is searched (step S11). Next, the preset threshold time is compared with the clear time T of the searched frame N (step S12). When the clear time T is longer than the threshold time (step S12; no), it is determined that the scene N is a scene that has not yet been searched, and the scene N in which the line-of-sight flag is cleared from the recording medium 105 is It is read from the beginning to the end, displayed on the display 106 through the memory 103 and the image compression / decompression unit 104, and records the line-of-sight flag “ON” or “OFF” in the scene N. (Step S13). Then, it returns to step S10.
[0066]
On the other hand, when the clear time T is shorter (step S12; yes), it is determined whether or not there is a scene longer than the threshold time until the end of the file during the normal reproduction operation (step S14). As a result of the determination, if there is no scene in the file that is longer than the threshold time A until the end of the scene (step S14; yes), the line-of-sight display control means 125 displays an OSD message “There are no unseen frames”. indicate. And since it was judged as Yes in step S12, the message of a change request of threshold time is issued as mentioned above (step S15). If there is a scene longer than the threshold time until the end of the scene in the file (step S14; no), the process returns to step S10.
[0067]
As described above, when the skip switch 108 is pressed, it is possible to easily skip to a scene that the user has not yet seen. In the present embodiment, an operation for searching for a scene in which the line-of-sight flag is cleared is shown. However, a search-completed scene can also be searched for confirmation again.
[0068]
Next, the operation of the line-of-sight detection unit 107 that generates the line-of-sight detection signal 112 will be described.
[0069]
FIG. 6 shows a functional block diagram of the line-of-sight detection unit 107 of the information recording / reproducing apparatus 1 according to the present invention.
[0070]
The line-of-sight detection unit 107 includes an image sensor, an image input unit 501 including an AGC for performing brightness control of the sensor, an image digital signal, for example, a signal processing unit 502 that generates a YUV signal, and the presence or absence of the line of sight, 112 includes a line-of-sight determination unit 503, a black eye position setting unit 504, and a black eye determination unit 505.
[0071]
FIG. 7 is a flowchart showing the setting of the line-of-sight detection unit 107 before reproduction.
[0072]
The setting operation of the line-of-sight detection unit 107 before reproduction will be described with reference to FIG.
[0073]
Prior to frame reproduction, the image input unit 501 is directed to the user in advance. The image input unit 501 inputs an image of the user's eyeball region and outputs an image signal. The output image signal is signal-processed by the signal processing unit 502, and the image digital signal is sent to the control unit 101 and displayed on the display 106. At the same time, the black eye frame region for determining the black eye position of the eyeball is OSD-displayed on the display 106 (step S31).
[0074]
Next, a predetermined size and position of the black eye frame are set by the black eye position setting unit 504 so that the user's eyes displayed on the display 106 fall within the black eye frame, and OSD display is performed (step S32). Further, the black eye determination unit 505 sets various image feature amounts for determining that the image of the black eye frame region includes a black eye part. For example, the ratio of the white portion around the black eye in the black eye frame region set by the black eye position setting unit 504 as the image feature amount, the luminance, and the like can be mentioned. From these image feature amounts, conditions for determining that the image of the black eye frame region includes a black eye portion are set (step S33). The above processing is executed, and the advance adjustment is completed.
[0075]
Next, the operation of the line-of-sight detection unit during frame reproduction will be described with reference to FIG.
[0076]
FIG. 8 is a flowchart showing the operation of the line-of-sight detection unit 107.
[0077]
During playback of the frame, the eyeball image digital signal processed by the signal processing unit 502 and information such as the size and position of the black eye frame for determining the black eye previously set by the black eye position setting unit 504 are used as the line-of-sight determination unit 503. (Step S50).
[0078]
The line-of-sight determination unit 503 determines whether or not “black eyes” are within the previously set black eye frame region (step S51). When the information from the black eye determination unit 505 is compared with the image in the black eye frame and it is determined that “black eye” is in the black eye frame (step S51; yes), the line of sight determination unit 503 detects the line of sight detection signal. 112 is set to the line-of-sight state and sent to the control unit 101 (step S52). On the other hand, when it is determined that “black eyes” do not exist (step S51; no), the line-of-sight detection signal 112 is sent to the control unit 101 with no line-of-sight state.
[0079]
As described above, it is possible to easily determine whether or not the user is actually searching for a frame by determining whether or not a black eye actually exists in the user's previously set black eye frame region. .
[0080]
The above embodiments are for illustrative purposes and do not limit the scope of the present invention. Accordingly, those skilled in the art can employ embodiments in which each or all of these elements are replaced by equivalents thereof, and these embodiments are also included in the scope of the present invention.
[0081]
【The invention's effect】
As described above, according to the present invention, during playback of a frame, a gaze detection signal presence / absence state indicating whether or not the user has actually seen is recorded in the frame, and then stored in the recording medium, and the frame is played back again. At this time, the presence / absence state of the eye-gaze detection signal is read from the frame and displayed on the display, and the skip control means can quickly search for the frame that the user has not seen. In addition, when searching for a frame in an information file, an erroneous determination is made such that it is determined that a frame that has not been searched is searched by comparing the time when there is no line-of-sight detection signal in the frame that has not been searched and the threshold time. Can be prevented. In addition, the threshold time can be changed according to the contents of the information file, and erroneous determination can be reduced.
[0082]
Furthermore, since the user can observe the line-of-sight flag recorded on the display, it is possible to give a trigger to change the playback position of the frame, and to shorten the search time of the desired frame position. is there.
[Brief description of the drawings]
FIG. 1 is a block diagram of an information recording / reproducing apparatus according to the present invention.
FIG. 2 is a schematic configuration diagram showing each unit of a control unit 101 of the information recording / reproducing apparatus 1 according to the present invention.
FIG. 3 is a flowchart of a line-of-sight flag writing operation during frame reproduction;
FIG. 4 is a diagram illustrating an example of a line-of-sight flag “ON / OFF” recorded in a frame.
FIG. 5 is a flowchart showing a skip operation when skipping a frame that has been played once or more.
FIG. 6 is a functional block diagram of a line-of-sight detection unit 107 of the information recording / reproducing apparatus 1 according to the present invention.
FIG. 7 is a flowchart showing a setting before reproduction of the line-of-sight detection unit 107;
FIG. 8 is a flowchart showing the operation of the line-of-sight detection unit 107.
[Explanation of symbols]
1 Information recording and playback device
101 Control unit
102 DMA controller
103 memory
104 Image compression / decompression unit
105 Recording medium
106 display
107 Gaze detection unit
108 Skip switch
109 Clear switch
110 hours setting section
111 Flag rewrite permission switch
112 Gaze detection signal
120 Recording / reproducing control means
121 Skip control means
122 Gaze recording time calculation control means
123 Line of sight clear control means
124 Threshold time setting change control means
501 Image input unit
502 signal processing unit
503 Gaze determination unit
504 Black eye position setting section
505 Black eye determination part

Claims (8)

A line-of-sight detection unit that outputs a line-of-sight detection signal indicating the presence or absence of the user's line of sight;
A recording / reproducing control unit that records the gaze presence / absence state from the gaze detection unit for each frame when reproducing the frame of the information file recorded on the recording medium;
An information recording / reproducing apparatus comprising: A skip control unit that reads out the gaze presence / absence state recorded in the frame and skips a frame in which the gaze presence state is recorded for a predetermined period when the frame is reproduced by the recording / reproduction control unit; The information recording / reproducing apparatus according to claim 1, further comprising: The skip control means provides a threshold time for comparing with the time when the visual line presence / absence state is recorded, and skips the frame having the time when the visual line presence state is recorded for the threshold time or longer. The information recording / reproducing apparatus according to claim 2, wherein: Threshold time setting change control means for changing the threshold time, and the threshold time setting change control means causes the skip control means to skip the frame according to the content of the frame. 4. The information recording / reproducing apparatus according to claim 3, wherein the time is changed. 5. The information recording according to claim 1, further comprising line-of-sight clear control means for setting all the lines of sight presence or absence recorded in the frame of the information file to a line-of-sight state. Playback device. In order to allow the user to check whether the gaze presence / absence state is a searched or unsearched frame, gaze display control means for displaying the gaze presence / absence state is provided on a display that displays the frame. The information recording / reproducing apparatus according to claim 1, wherein: The line-of-sight display control means sends a message notifying that there is no unsearched frame in the information file when searching for the absence of the frame in which the line-of-sight state is recorded during the file reproduction. The information recording / reproducing apparatus according to claim 6, wherein the information recording / reproducing apparatus displays on the display. The line-of-sight detection signal detection unit is configured to input an image of a user's black eye part in order to detect the user's line-of-sight detection signal; and
In the image output from the image input unit, a black eye position setting unit for setting the size and position of the black eye frame region of the black eye part,
A black eye determination unit that sets various image feature amounts for determining that the image of the black eye frame region includes the black eye part;
A line-of-sight determination that compares the feature amount of the image in the black eye frame region set by the black eye position setting unit with the image information from the black eye determination unit, and determines that the image in the image region is the black eye portion. And
The information recording / reproducing apparatus according to claim 1, further comprising:

Images