JPH10191222A - Image recording/reproducing device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To reproduce a title when reproduction is started from a part different from the head of a scene in an image recording/reproducing device. SOLUTION: A touch panel 42 as a title input means and a touch position decoding circuit 43 are provided. A controller 34 which continuously sends title information which is repetitively inputted during the recording of the scene, a recording signal processing circuit 37 recording image information and title information and a reproduction signal processing circuit 38 reproducing the image information and the title information are provided. Thus, the title is reproduced even if reproduction is started from a part different from the head of the scene by constituting the controller 34 in such a way that title information which are continuously reproduced during the reproduction of the scene are outputted to a liquid crystal panel 41.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an image recording and reproducing apparatus for recording and reproducing image information on a recording medium such as a magnetic tape.

[0002]

2. Description of the Related Art The problem with shooting with a conventional video camera or the like is that when a comment or title is added to a shot scene, a dedicated device is purchased and dubbing is performed later to add a title. Also, there was no alternative but to write the title on a piece of paper and shoot it with a camera.

In order to solve the above problem, Japanese Patent Laid-Open No.
Japanese Patent No. 472 discloses a technology in which a touch panel is attached to a camera-integrated VTR with a monitor, a title of a scene is input by pen input, and a character signal is recorded in an area other than an image recording area of a magnetic tape of the VTR. I have.

Japanese Patent Laid-Open Publication No. 3-24870 discloses a technique of recording a superimposed image on a sub-track different from an image track.

[0005]

However, in the above-mentioned prior art, since the character signal and the superimposed image input by the pen are recorded separately from the track for recording the video signal, they are reproduced from the beginning of the scene. However, since the character signal cannot be reproduced when a part other than the beginning of the scene is reproduced, it is not possible to determine the title of the scene being reproduced until the start of the scene. There is a problem that it is necessary to return to the access position of and re-play.

An object of the present invention is to enable a title of a scene to be displayed in such an image recording / reproducing apparatus even when reproduction is started from a portion other than the head of the scene.

[0007]

An image recording / reproducing apparatus according to the present invention is an image recording / reproducing apparatus for recording and reproducing image information on a storage medium and outputting the reproduced image information to image display means. Title input means for inputting scene title information which is the continuous image information, and image information recorded in an image information recording area of the recording medium, and a subcode information recording area in the same sector as the image information recording area. Recording means for recording the title information as subcode information in all areas corresponding to the image information recording area in which the scene is recorded, and the image information and the subcode information recorded on the recording medium. A playback unit for playing back, and a title output unit for outputting title information recorded as the subcode information to the image display unit. , Image recording and reproducing apparatus capable of even when the playback starts from the portion other than the beginning of a scene displaying a scene title are obtained.

[0008]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The invention according to claim 1 of the present invention is an image recording / reproducing apparatus for recording and reproducing image information on a storage medium and outputting the reproduced image information to image display means. Title input means for inputting scene title information which is the continuous image information, and image information recorded in an image information recording area of the recording medium, and a subcode information recording area in the same sector as the image information recording area. Recording means for recording the title information as subcode information in all areas corresponding to the image information recording area in which the scene is recorded, and the image information and the subcode information recorded on the recording medium. Playback means for reproducing, and title output means for outputting title information recorded as the subcode information to the image display means, wherein the scene is All of the sub-code information recording area corresponding to the image information recording area is recorded, the title information is recorded, an effect that can display a title even when the reproduction from the middle of the scene.

According to a second aspect of the present invention, there is provided the image recording / reproducing apparatus according to the first aspect, wherein the subcode information recording area of the recording medium is a sector different from the image information recording area,
The recording means enables title information to be overwritten and recorded independently of image information, and the subcode information recording area can overwrite and record title information independently of the image information recording area. This has the effect that the title can be rewritten later.

According to a third aspect of the present invention, there is provided an image recording apparatus for recording and reproducing image information on a storage medium stored in a cassette having a storage element mounted thereon, and outputting the reproduced image information to image display means. A playback device, comprising: title input means for inputting title information of a scene, which is the continuous image information; and image information recorded in an image information recording area of the recording medium, and a sub code information recording area of the recording medium. Recording means for recording position information; start position information which is position information of a start position of the scene; end position information which is position information of an end position of the scene; and corresponding title information, the storage element of the cassette. A scene title writing unit for storing the image information and the position information recorded on the recording medium; and a storage element of the cassette. A scene title readout unit that reads start position information that is position information of a start position of the scene, end position information that is position information of an end position of the scene, and title information that corresponds to the scene; Is compared with the start position information and the end position information obtained from the scene title reading means, and when the position of the image information currently being reproduced is within the scene, the title information is Title output means for outputting to the image display means, and the title information corresponding to the scene is recorded in the storage element together with the start position information of the scene and the end position information of the scene. By comparing with, the title of the corresponding scene can be identified and displayed even when the scene is played from the middle of the scene. It has the effect of.

An embodiment of the present invention will be described below with reference to the drawings. There are two embodiments, and the two embodiments will be described based on a consumer digital VTR. Therefore, the standard of the consumer digital VTR will be described in advance.

FIG. 1 is a diagram schematically showing a track pattern, wherein 1 indicates a magnetic tape as a recording medium, 2 indicates the direction in which the magnetic tape 1 runs, and 3 indicates the direction in which the head scans. Is shown.

In the track, reference numeral 4 denotes ITI (In)
sert and Track Information
n) sector, 5 is an audio (Audio) sector, 6
Is a video (Video) sector, and 7 is a subcode (Su).
bcode) sector. In the case of the 525/60 system,
One frame of image / audio data is composed of 10 tracks, and the track numbers are from 0 to 9.

Each of the sectors 4 to 7 has a sync block as a unit. The number of valid sync blocks is 14 sync blocks per track in the audio sector 5, 149 sync blocks in the video sector 6, and 12 sync blocks in the subcode sector 7. Become. One sync block is 90 bytes in the audio sector 5 and the video sector 6, and 12 bytes in the subcode sector 7.

FIG. 2 is a diagram schematically showing the structure of the video sector 6. The effective area of the video sector 6 is sync block numbers 19 to 167. Reference numeral 11 denotes an area in which a predetermined sync pattern is recorded, which is 2 bytes for each sync block. 12 is an area where ID data is recorded,
Each sync block has 3 bytes. 13 is VAU
In an area where X (auxiliary data relating to video data) is recorded (hereinafter, referred to as a VAUX area), VAUX is inserted in a data area (77 bytes) of a sync block having sync block numbers 19, 20, and 156. Become. 14
Is an area where video data is recorded. Each sync block stores 77 bytes of data. Reference numeral 15 denotes an area in which parity for error correction is recorded. Parity is entered in the area of the last 8 bytes of each sync block and sync block numbers 157 to 167.

The VAUX area 13 has 77 bytes per sync block.
Since the pack structure has one pack, 75 bytes (= 15 packs) are actually used.

In the track having an odd track number, the first six packs of the VAUX area 13 having the sync block number 19 are provided. In the track having the even track number, the latter six packs of the VAUX area 13 having the sync block number 156 are provided. The main area is defined and a predetermined pack is to be written. Areas other than the main area are optional areas, and in principle packs can be freely written.

Although not shown, AAUX (auxiliary data relating to audio data) is also provided in audio sector 5.
Is recorded. FIG. 3 schematically shows the structure of the subcode sector 7.

In FIG. 3, reference numeral 21 denotes an area in which a predetermined sync pattern is recorded, which is 2 bytes for each sync block. Reference numeral 22 denotes an area where ID data is recorded, which is 3 bytes for each sync block. Reference numeral 23 denotes an area in which subcode data is recorded (hereinafter, referred to as a subcode data area), which has 5 bytes per sync block. Since this area also has a pack structure similar to VAUX, one pack per sync block Becomes Reference numeral 24 denotes an area where parity for error correction is recorded.

In the subcode data area 23, areas having sync block numbers of 3, 4, 5, 9, 10, and 11 are main areas, in which predetermined information such as time code and recording date and time is recorded. The area becomes an optional area, and packs can be freely recorded in principle. However, in the first five tracks of the ten tracks constituting one frame, the same packs on each track are rearranged and recorded repeatedly.
Similarly, the same packs are rearranged and recorded repeatedly in the latter five tracks. FIG. 4 shows a recording method of the subcode data. The katakana indicates the optional area, and the hiragana indicates the main area. Where the same kana is recorded, the same pack must be recorded. 12 packs can be recorded in the area.

The standards for consumer digital VTRs include MIC (Memory In Cassette).
A non-volatile memory is attached to a cassette containing a magnetic tape, and a TOC (Table of Table) is attached.
Content) information can be managed. The memory installed in the cassette is a power supply, G
It has four terminals, ND, clock, and data, and communicates in 2-wire serial. The communication protocol is I ² C (In
ter Integrated Circuit) is used. A pack structure is used to record data in the memory in the same manner as subcode data and VAUX. The main area in which predetermined data must be recorded is the first 16 bytes of the memory, and the 17th and subsequent bytes are optional areas. As a general rule, packs can be freely recorded.

The above is the description of the standard used in the description of the embodiment of the present invention, but the parts that are not described in detail are not directly related to the following embodiment, and the description is omitted. Is HD DIGITAL VCR CONFERENC
E `` Specification of Consumer-Use Digital VCR
s using 6.3mm magnetic tape ”(hereinafter referred to as DVC standard). (Embodiment 1) FIG. 5 shows the internal configuration of a camera-integrated consumer digital VTR (hereinafter referred to as DVC) according to Embodiment 1 of the present invention.

On a magnetic tape 1 as a recording medium, information is recorded by a recording head 32, and the recorded information is read by a reproducing head 33. In FIG. 5, reference numeral 34 denotes a controller comprising a microcomputer for controlling the entire system; 35, a camera for capturing external video as an image signal; 36, a microphone for capturing external audio as an audio signal; The signal, the audio signal from the microphone 36, and the AUX data and subcode from the controller 34 are transmitted to the recording head 32 by the recording signal processing circuit 37.
And recorded on the respective sectors 4 to 7 of the magnetic tape 1. The image information, audio information, AUX data, and subcode recorded on the magnetic tape 1 are reproduced by the reproduction signal processing circuit 38.

Reference numeral 39 denotes a speaker for converting an audio signal output from the reproduction signal processing circuit 38 into sound, and reference numeral 40 denotes a reproduction signal processing circuit 37.
Alternatively, the image signal output from the camera 35 is
Is a display circuit that overlays and outputs the output bitmap information, and the image signal output from the display circuit 40 is displayed on the liquid crystal panel 41. A touch panel 42 of a resistive film type is overlaid on the liquid crystal panel 41. A touch position decoding circuit 43 for applying a voltage to the touch panel 42 and outputting coordinate information on the touch panel pressed by a change in the output potential. Is provided.

Touch panel 42 and touch position decoding circuit
43 may be a conventionally widely used one.
-79626 and JP-A-8-23472. Further, in this embodiment, a resistive touch panel is used, but any other touch panel such as an electromagnetic induction touch panel may be used as long as it can obtain coordinate information.

The DVC of the present embodiment has a touch panel 42
It has a function of recording the image data input with the pen on the magnetic tape 1 together with the image data obtained from the camera 35, and reproducing the same. (Normal Image Recording) First, the operation during normal image recording will be described.

The controller 34, which has received a recording instruction by a button (not shown), instructs a recording signal circuit 37 to record an image signal obtained from the camera 35 and an audio signal obtained from the microphone 36 on the magnetic tape 1. At this time, the controller 34 transmits data necessary for recording the AUX data and the subcode, that is, the VAUX area 13 of the video sector 6.
Then, the data of the pack to be recorded in the main area of the subcode data area 23 of the subcode sector 7 and the absolute track number are output to the recording signal processing circuit 37.

Table 1 shows the packs recorded in the main area.

[0029]

[Table 1]

Although six packs can be recorded in the main area of the VAUX area 13 as described above, actually four packs are recorded, and the remaining two packs are recorded as NO INFO packs (packs without information). become. In the main area of the subcode data area 23, the titles "A", "I", and "U" in FIG.
Record the CODE pack and place VAUX in the place of "E"
Place the RECDATE pack on the VAUX R
The ECTIME pack is recorded (for the contents of each pack, refer to the DVC standard).

As described above, when the controller 34 continues to output data and receives an instruction to stop recording, the controller 34 ends the data transmission and stops the recording operation. (Normal Playback) Next, the processing at the time of playback will be described. When receiving a reproduction instruction from a button (not shown), the controller 34 instructs the reproduction signal processing circuit 38 to reproduce the information recorded on the magnetic tape 1. The reproduced image information is output to the display circuit 40, and the bit map information output from the controller 34 is overlaid and displayed on the liquid crystal panel 41. The audio signal is output to a speaker 39 through a D / A conversion circuit and an amplifier (not shown) and reproduced as audio.

VA reproduced by the reproduction signal processing circuit 38
The information of UX, AAUX, and subcode is output to the controller 34, and the processing is performed. For example, a TITLE TIMECODE pack reproduced from the main area of the subcode data area 23 of the subcode sector 7 is received, time code information is extracted, numeric information is converted to bitmap information, and output to the display circuit 40 as coordinate data. To display the time code.

The processing of the display circuit 40 will be described with reference to FIG. FIG. 6 is a block diagram showing the processing of the display circuit 40. In FIG. 6, reference numeral 51 denotes two frame memories for holding received image data;
The digital image data obtained from the camera 35 or the reproduction signal processing circuit 38 is written into the unused frame memory 51 by the memory writing control unit 52.
Reference numeral 53 denotes a memory for holding bitmap information to be displayed, and the bitmap information is written by the bitmap information decoding unit 54 into the memory 53 instructed by the controller 34.

Reference numeral 55 denotes a memory read control unit for selectively reading out data to be displayed, either the memory 53 or the frame memory 51. The digital image data output from the memory read control unit 55 is subjected to D / A conversion. The D / A conversion is performed by the unit 56, and the synchronization signal is added and output by the synchronization signal addition unit 57. A clock generator and the like are omitted.

The operation of the display circuit 40 having the above configuration will be described. The transmitted image signal is transmitted to the memory write control unit 52.
Thus, the data is written to an appropriate position in the frame memory 51. On the other hand, the coordinate data output by the controller 34 is
The bitmap information decoding unit 54 writes the luminance information and the chrominance information as they are sent to the address on the memory 53 to be written because they are sent together with the luminance information and the chrominance information. As a result, the luminance and chrominance information of the same point on the screen has the same address on each of the memory 53 and the frame memory 51.

Therefore, the memory read control unit 55 reads the image data from the memory of the frame memory 51 which is filled with the image data, and also reads the data from the same address of the memory 53. If the data on the memory 53 indicates 0, the data obtained from the frame memory 51 is output to the D / A converter 56. If the data on the memory 53 indicates a value other than 0, the data is output from the memory 53. Is output to the D / A converter 56. By doing so, the bitmap data desired to be displayed by the controller 34 is overlaid on the image signal and displayed.

Therefore, when outputting a value of 0 as the luminance information and the color difference information to the bitmap information decoding unit 54, the controller 34 erases the specified point, and when outputting a point other than 0. The specified point will be displayed.

Normal recording and reproduction are performed as described above. (Title input) Next, a title input operation will be described.

The user instructs to enter the title input mode by a button (not shown) before photographing. The controller 34 that has received the instruction waits for input of coordinate information from the touch position decoding circuit 43.

When the controller 34 obtains coordinate information from the touch position decoding circuit 43, the controller 34 outputs information for displaying a point at the position touched on the display circuit 40, and stores the coordinate information. The display circuit 40 outputs an image signal to display a point on the screen based on the input coordinate information, and displays the image signal on the liquid crystal panel 41. This allows the user to check the characters and pictures drawn by him.

When the user has finished drawing characters and pictures, the user instructs the end with the button again. The controller 34 stops the operation of the touch position decoding circuit 43 in response to the instruction. When the controller 34 further inputs a recording instruction, the controller 34 converts the stored coordinate information into a format for recording in the VAUX area 13 and outputs it to the recording signal processing circuit 37, and the pictures and characters drawn with the image on the magnetic tape 1 are displayed. Be recorded. At this time, the controller 34 repeatedly transmits the coordinate information to the recording signal processing circuit 37 from the recording start point to the recording end point. As a result, the coordinate information is recorded anywhere in one recorded scene.

The title input is performed as described above. Next, the operation of the touch position decoding circuit 43 will be briefly described. The specific circuit and sampling process are the same as those of a conventionally used touch panel, and a description thereof will be omitted. Since the touch position decoding circuit 43 has an 8-bit A / D converter, the resolution is 256 × 256 pixels. The touch position decoding circuit 43 performs sampling once every 10 msec, and obtains the coordinate values of the pressed X and Y, and obtains a value of 0 to 255 in the X (horizontal) direction and Y (vertical).
Regarding the direction, three pieces of information, that is, a value of 0 to 255 and a state of the pen (pressed / continuously pressed / released) are transmitted. Actually, a state code of pressed = 11h, pressed = AAh, released = 77h is used, and three bytes are set as one set, and the state code, the X coordinate, and the Y coordinate are transmitted in the start-stop synchronization system. The baud rate is 9600 bps. FIG. 7 shows an example of a communication timing chart.

FIG. 7 shows that from the position (10, 10),
This figure shows the state of communication when a straight line is drawn up to the position (100, 100). When a pen press is detected, the first byte of communication is set to 11h and three bytes are transmitted. After the elapse of 10 ms, the pen is still pressed, so that the first byte of the communication is set to AAh and the coordinate information is continuously sent. Finally, when the pen is released, the first communication
The byte is set to 77h and the last coordinate is transmitted again. 77
After transmitting 3 bytes with h as the header, communication is not performed until the next pen press is detected.

The controller 34 keeps the serial interface operating at all times so that it can respond to communication starting at any timing,
An interrupt should be activated when a byte is received.

Next, how the controller 34 converts the coordinate information into coordinate information to be output to the display circuit 40 will be described. The display circuit 40 has a nominal resolution of 720 × 480 pixels. This is based on the resolution according to the DVC standard. Therefore, the controller 34
Must convert the coordinate information obtained at a resolution of 256 × 256, and display the line drawn thick for good appearance. Therefore, the display coordinates are set to Xd
Assuming that the coordinates obtained from the touch position decoding circuit 43 are Xpen and Ypen, respectively, Xdisp and Ydisp are obtained by Expression (1).

[0046]

(Equation 1)

To make the displayed line thicker, Xd
Assuming that the coordinate values painted white when isp and Ydisp are designated are (Wx (Xdisp) and Wy (Ydisp)), the following formula can be used to fill the area of a circle centered at (Xdisp, Ydisp). 2) is obtained.

[0048]

(Equation 2)

The controller 34 must output the coordinate values to the display circuit 40 in order to paint all the points in the area specified by the equation (2) white. The above is the description of the method of creating the coordinate information to be output to the display circuit 40.

Next, how the bitmap information is actually recorded in the optional area of the VAUX area 13 on the tape will be described. VAUX area for bitmap information
To record in the 13 optional areas,
CODE pack (pack header = F0h) and two OPTION packs (pack header = F1h, F
2h) is used. A pack whose pack header is F1h is called a BITMAP HEADER pack, and a pack whose pack header is F2h is called a BITMAP pack. 8 shows the contents of the MAKER CODE pack, FIG. 9 shows the contents of the BITMAP HEADER pack, and FIG. 10 shows the contents of the BITMAP pack.

In FIG. 8, reference numeral 61 denotes a pack header, F0
h fixed. Reference numeral 62 denotes a maker code, in which a maker code for making a DVC using a maker option is entered. Here, it is temporarily set to 02h. An area 63 stores the total number of packs. The area 63 indicates the number of areas occupied by the manufacturer indicated by 62 and the number of areas following the maker code pack. When the VAUX area 13 is used, one area is used for one frame. Since it is completed, it is possible to continue a maximum of 389 packs. 64 and 65 are empty areas according to the DVC standard, but here (maker code = 02h
In the case of), 64 is reserved and all bits are filled with 1.
65 is set to 01h as a format code. That is, when the format code is 01h, the pack whose pack header is F1h is stored in BITMAP HEADE.
R pack, pack with pack header F2h is B
It is defined as an ITMAP pack.

In the area after the maker option pack is recorded (in the same frame in the case of VAUX), the maker specified by the maker code 62 is free to use the option specified by the maker code 62 for the range specified by the area of the total number of packs.
N packs can be arranged. The OPTION pack is a pack whose pack header is F1h to FEh.

In FIG. 9, reference numeral 71 denotes a pack header, F1
h fixed. Manufacturer code 62 and format code
BITMAP HEADE by 65 and pack header 71
This indicates that it is an R pack. 72 and 73 indicate the number of pixels in the X direction of the bitmap information shown below, ie, 7
4, 75 indicates the number of pixels -1 in the Y direction. In this case, it is 256 × 256, so FFh is 72 and 00 is 73.
h and 74 are FFh and 75 are 00h.

When recording one piece of bitmap information, a BITMAP HEADER pack is recorded first, and then a predetermined number of BITMAP packs are recorded successively.

In FIG. 10, reference numeral 81 denotes a pack header, F2
h fixed. Manufacturer code 62 and format code
65 and the pack header 71 indicate a BITMAP pack. 1 bit / pixel ON for 82 to 85
(1) indicates / OFF (0), and bitmap information is recorded. The recording method will be described with reference to FIG.

FIG. 11 shows one screen of 256 × 256, in which each square is regarded as one pixel, and the numbers inside indicate the order of recording using the BITMAP pack. In other words, the upper left point of the screen is BITMAP HE
It becomes the LSB of the BITMAP pack next to ADER, and records ON / OFF of the right pixel on the same line, and after recording 256 pixels (= 8 packs), the leftmost pixel of the second line Move on to The recording is continued in this manner, and the lower right point is recorded on the MSB of the last pack.

Next, how the above packs are arranged in the VAUX area 13 will be described. FIG. 12 is a diagram showing an arrangement of three packs.
ODE pack is shown, and 92 (BH) is BITMAP HE
An ADER pack is shown, 93 (BM) is a BITMAP pack, and 94 is a main area. Since a MAKER CODE pack or an OPTION pack cannot be recorded in the main area 94, 3 tracks per track are practically used.
Nine packs can be recorded. Note that the ID, sync pattern, parity, and reserved bytes (2 bytes / sync block) are omitted.

A frame at which bitmap information starts to be recorded, that is, a user performs handwriting input on the touch panel 42,
The (MC) maker code pack is written in the first pack of the VAUX area 13 of the track 0 of the frame where recording has started. Next (BH) BITMAP HEADE
A declaration is made that the R pack is written and that 256 × 256 bitmap information is to be recorded. Hereinafter, (B
M) 2048 packs of BITMAP packs are recorded. However, since the range to which the MAKER CODE pack is applied is completed in one frame, 389 packs (1
BITMAPHEADER packs and 388 B
(ITMAP pack) is recorded, a MAKER CODE pack is written again at the beginning of track 0 of the next frame, and the subsequent BITMAP pack is continuously recorded.

If there are no other packs to be recorded in the optional area, 5 frames and 2 tracks + 2 packs of 27 packs
Since 048 BITMAP packs can be recorded, BITMAP HEADER packs are recorded again in order to repeatedly record bitmap information.
048 BITMAP packs are recorded. This is repeated many times until the recording of one scene is completed.

At the end of recording, even if the BITMAP pack being recorded is still in the middle, the recording is terminated as it is. As a result, since the same bitmap information is recorded many times, even if the bitmap information ends halfway, there is no practical problem.

As described above, the DVC records the handwritten input bitmap information in the VAUX area 13 of the video sector 6 on the magnetic tape 1. When there are no other packs to be recorded in the optional area, one bitmap information can be recorded in 5 frames and 3 tracks as described above. Otherwise, it is necessary to record some bitmap information. It is conceivable that the number of frames increases, but when the number of frames doubles, 11 frames = about 0.37
Seconds are not a problem. (Title Reproduction) Next, the processing when the magnetic tape 1 is reproduced will be described. In FIG. 5, a reproduction signal processing circuit
Numeral 38 converts the signal from the reproducing head 33 into a digital image signal and outputs it to the display circuit 40. The display circuit 40 is a controller 34
Are overlaid by the same processing as in FIG. 6 and displayed on the liquid crystal panel 41.

At this time, the controller 34 detects 256 × 256 bitmap information from the pack information recorded in the VAUX area 13 obtained separately from the image signal from the reproduction signal processing circuit 38, and the touch position decoding circuit 43 From256
By outputting the bitmap data to the display circuit 40 in the same process (using equations (1) and (2)) as when obtaining the bitmap information of × 256, the title recorded on the magnetic tape 1 is output. Play information.

Here, a process in which the controller 34 detects pack information in the VAUX area 13 and converts it into 256 × 256 bitmap information will be described. Since the pack related to the bitmap information is recorded in the VAUX area 13 of the scene in which the title information is recorded as shown in FIG. 12, if the reproduction is started from the beginning of the scene, (MC) M
If the AKER CODE pack is found and the next recorded (BH) BITMAP HEADER pack can be found, then the next recorded (BH)
M) The 2048 packs after the BITMAP pack can be reproduced and returned to the bitmap as shown in FIG.

However, when the scene is reproduced from the middle of the scene, the maker code pack can be found, but since the BITMAP pack appears immediately, it is not possible to know the position on the screen. In such a case, BITMAP HEADER
By continuing to search for packs and continuing to import BITMAP packs from the found location, it becomes possible to display the recorded title immediately after starting playback from any location in the scene.

In the first embodiment, a VTR conforming to the consumer digital VTR standard is used for the image recording / reproducing method. However, a format which can record subcode information together with image information without using a VTR is also used. Implementation is possible if possible. Although the touch panel is used as the input means of the handwritten bitmap information, any means such as a mouse, a keyboard, and a voice recognition may be used as long as it can input bitmap information or text information.

Although the bitmap information is recorded in the VAUX area 13 of the video sector 6, it is apparent that the bitmap information can be recorded in the subcode sector 7 without any problem. Since only 12 packs can be recorded per frame in the subcode sector 7, if the accuracy of the A / D converter of the touch position decoding circuit 43 is reduced and recorded at about 64 × 64 pixels, one screen can be recorded in about 12 frames. Can be recorded. Further, since the subcode sector 7 can be rewritten independently of the video sector 6, there is an advantage that the title can be rewritten after recording the scene.

In the first embodiment, the recording means in the claims corresponds to the controller 34, the recording signal processing circuit 37, and the recording head 32, and the image information recording area is a sync block other than the VAUX area 13 of the video sector 6. , The subcode information recording area corresponds to the VAUX area 13, the title input means corresponds to the touch panel 42 and the touch position decoding circuit 43, and the reproduction means corresponds to the reproduction signal processing circuit.
The title output means corresponds to the controller 34 and the display circuit 40. (Embodiment 2) DVC in Embodiment 2 of the present invention
FIG. 13 shows the entire configuration of the first embodiment. The same components as those in the first embodiment are assigned the same reference numerals, and description thereof is omitted.

Reference numeral 101 denotes a cassette for storing the magnetic tape 1, and a non-volatile memory 102 is attached to the cassette 101. This nonvolatile memory 102 has a configuration and an interface in accordance with the DVC standard. Reference numeral 103 denotes a controller for controlling the entire system, and the software is different from that of the first embodiment.

The DVC according to the present embodiment has a function of inputting and displaying a title in a scene similarly to the first embodiment, but the user can perform the function not only before shooting the scene but also after shooting the scene. You can enter a title.

Specifically, the controller 103, which has received an instruction from the user, outputs coordinate data to the display circuit 40 and
A screen as shown in 14 is displayed on the liquid crystal panel 41.
The user inputs desired characters by touching with a pen, and the controller 103 records the input text information (title information) in the memory 102 of the cassette 101 together with scene start position information and scene end position information. At the time of reproduction, the function is such that the text information of the title of the scene being reproduced read from the memory 102 is displayed through the display circuit 40. (Normal Image Recording) FIG. 15 is a block diagram showing a part of the internal processing of the controller 103.

In FIG. 15, reference numeral 111 denotes a reproduced signal processing circuit 38.
ATN (Absolute Track) obtained from
ATN extraction means for extracting Number = absolute track number) 112 is an ATN to be recorded in the recording signal processing circuit 37
ATN generating means for outputting the T. 113 of the recorded scene
TOC creating means for creating OC information;
Memory writing means for recording data such as TOC information in
Reference numeral 115 denotes memory reading means for reading data from the memory 102.

Reference numeral 116 denotes T obtained from the memory reading means 115.
ATN comparing means for comparing the ATN of the OC information with the ATN obtained from the ATN extracting means 111; 117, a coordinate character converting means for converting the coordinate information obtained from the touch position decoding circuit 43 into character information; Input character conversion means for storing the character information output by the conversion means 117 as a text code; 119, a character table creation means for creating a hiragana, katakana or alphanumeric character table and outputting it to the display circuit 40; Character data creation means for converting the text code stored in the character storage means 118 into character information to be displayed and outputting the converted information to the display means. 121 is the output of either the character table creation means 119 or the character data creation means 120. Switch to determine (Normal Image Recording) At the time of normal image recording, the recording signal processing circuit 37 outputs the image signal from the camera 35, the audio signal from the microphone 36, and the ATN output from the ATN creating means 112.
Then, the subcode and AUX information output from the controller 102 are recorded on the magnetic tape 1. At this time, the TOC creation unit 113 stores the ATN of the first track of the recording start frame output by the ATN creation unit 112 and the ATN of the last track of the recording end frame, outputs the ATN to the memory writing unit 114, and outputs it to the memory 102. Record.

ATN of first track of recording start frame
Is recorded in the PROGRAM START pack, and the ATN of the last track of the recording end frame is PROGRA
The recording start date and time information recorded by a MEND pack and obtained from clock means (not shown) is stored in a PROGRAM RECD.
Recording is performed using a TIME pack (for the contents of each pack, refer to the DVC standard). FIG. 16 shows the arrangement of each pack. FIG. 16 shows the memory 10 when one scene is recorded.
FIG. 2 is a map diagram showing the contents of No. 2, where 131 is a main area consisting of 16 bytes, APM, BCID, CASSETT.
E ID pack, TAPE LENGTH pack, TI
A TLE END pack is recorded (for details, see the DVC standard). A PROGRAM START pack 132 records the ATN of the start frame of the recorded scene (here, the ATN of the first track). 133 is PRO
In the GRAM END pack, the ATN of the end frame of the recorded scene (here, the ATN of the last track) is recorded. Reference numeral 134 denotes a RECDTIME pack in which date and time information (date and time at the start of recording) at which the scene was recorded is recorded. Reference numeral 135 denotes a No Info pack, and an unused area is to be filled with the No Info pack. In this case, assuming that the memory 102 has a capacity of 16 K bits, 31 bytes are used for the main area of 16 bytes and three packs = 15 bytes, so that the remaining 2017 bytes are all filled with FFh.

When one scene is recorded, a pack is recorded as described above. Thus, the controller 10
3 creates TOC information on the memory 102. (Title input) Next, the operation at the time of title input will be described with reference to FIG. When the user instructs to enter the title input mode, the switch 121 switches the output of the character table creating means 119 to output to the display circuit 40, and the character table creating means 119 displays the character table shown in FIG. The bitmap data is output to the display circuit 40.
The user looks at the screen of FIG. 14 and clicks a character to be input with a pen.

At this time, the touch position decoding circuit 43 detects the coordinates and outputs the coordinate information to the coordinate character conversion means 117. The coordinate character conversion means 117 converts the coordinate information into character information and outputs it to the input character storage means 118.

A method of converting coordinate information into character information will be described. The display range of the character table in FIG.
Assuming 256 pixels, the X (horizontal) direction is 17 to 23.
8. It is assumed that the Y (vertical) direction is displayed in the range of 75 to 195. Then, one cell has a size of 17 pixels in width × 20 pixels in height, and when the input coordinates are Xc and Yc, and the designated cell is (0, 0) at the upper left corner ( Xg, Yg) is represented by equation (3).

[0077]

(Equation 3)

Since Xg and Yg are integers, the largest integers that do not exceed the values obtained by equation (3) are Xg and Yg. Then, the coordinate character conversion means 117 converts the two-dimensional character string array Ch [0:12] corresponding to the character table of FIG.
With [0: 5], for example, Xg = 3, Yg =
In the case of 4, the input character can be determined as Ch [3] [4] = "re", and the input character storage means 11 can be determined.
8 can be output. The input character storage means 118 outputs the character codes stored in the character data creation means 120, and outputs bit map information of each character to the display circuit 40 so that it is easy to understand what character the user has input. To

When Xg = 11 and Yg = 0, since "←" in the character table has been input, the input character storage means 118 is instructed to delete the previously input character. = 11, Yg = 1, "alphabet"
Is clicked, the character table creating means 119 is instructed to switch to the alphanumeric table. Similarly, when the square of "kana" is clicked, a character table of katakana is created and displayed. FIG. 17 shows an alphanumeric character table, and FIG. 18 shows a katakana character table. Of course, when these tables are displayed, different character strings are used for decoding Xg and Yg.

When Xg = 11 and Yg = 5 are obtained,
This means that the input of characters is terminated, and the input character storage means 118 outputs the character information input to the memory writing means 114 and records it in the memory 102, but the input character information is input when the DVC is in the camera mode. The character information is recorded as the title of the scene to be recorded on the magnetic tape 1 when the next recording operation is performed, and the character information input when the DVC is in the VTR mode is the current character information. This is recorded as the title information of the scene recorded at the tape position.

In the camera mode, when the memory 102 is in a state as shown in FIG. 16, a pack is written into the memory 102 as shown in FIG. Reference numeral 141 denotes a newly recorded PROGRAM START pack of scene 2, 142 denotes a PROGRAMEND pack, and 143 denotes an RE.
A CDTIME pack 144 is a TEXT HEADER pack in which inputted text information is stored. The text flag recorded in the PROGRAM START packs 131 and 142 is a flag indicating whether text information is linked to the corresponding event.
When it is 0, it is assumed that text information is linked. T
The pack header of the EXT HEADER pack 144 is 48
h, PROGRAM START / END, RE
It is arranged behind the event constituted by the CDTIME pack.

In the case of the VTR mode, the memory 102 is in a state as shown in FIG.
If it is above, the ATN extracted by the ATN extracting means 111
Is compared with the ATN of the start position / end position of each scene input by the ATN comparing means 116 from the memory reading means 115,
After confirming that the current position is within scene 1, ATN
The comparing means 116 instructs the memory writing means 114 to input the TE created from the character information obtained from the input character storing means 118.
The XT HEADER pack is stored in the memory for each scene of scene 1 and the other TEXT HEADER packs.
The pack is arranged so as to be consistent with the position on the memory with respect to the pack, and the text flag of the PROGRAMSTART pack of scene 1 is set to 0. As a result, the arrangement is as shown in FIG. Reference numeral 145 denotes a TEXT HEADER pack storing the input text information (TEXT
(See DVC standard for details of HEADER pack).

The text information input as described above is recorded in the memory 102. (Playback) Next, the operation at the time of playback will be described with reference to FIG. At the time of reproduction, the ATN extracted by the ATN extraction means 111 and the AT of each scene recorded in the memory 102
A is compared by the ATN comparing means 116, and if a title is added to the currently reproduced scene, that is, if the text flag of the PROGRAM START pack of the currently reproduced scene is 0, the corresponding TEXT H
The EADER pack is output from the memory reading means 115 to the character data creating means 120, and the text information is converted into bitmap information and output to the display circuit 40 for display.

However, characters are displayed for two seconds at the start of playback or when a new scene is entered during playback.
2 if the title is registered in the scene
It is displayed for seconds. By doing so, the user can immediately determine which scene is currently being reproduced, regardless of where in the scene the reproduction is started. The number of seconds for displaying the characters is arbitrary, but may be about 2 seconds because it is long enough not to be overlooked by the user and because it is too long so as not to disturb the desired image. It is what we thought.

In the second embodiment, the memory 102 attached to the cassette 101 is used as a medium for recording the TOC information. This means that the cassette identification means such as a bar code is used for the cassette 101. In this case, the system may be provided with an identification means for the cassette 101 and a memory, or a method of recording TOC information on the magnetic tape 1 may be used. Further, similarly to the first embodiment, it is not necessary to limit the recording format to the DVC standard. In addition, a method of displaying a table on the screen and inputting the characters from the touch panel 42 is used for the character input method.
Similarly to the above, the input may be performed by another pointing device, or a method of converting coordinate information input by handwriting into text information using a character recognition unit may be used.

The correspondence between the means shown in FIGS. 13 and 15 and the claims is as follows. The ATN creating means 112, the recording signal processing circuit 37, and the recording head 32 correspond to the recording means, and include the touch panel 42, the touch position decoding circuit 43, and the coordinate character converting means.
117 corresponds to the title input means, the memory 102 corresponds to the storage element mounted on the cassette 101 containing the recording medium, and the input character storage means 118 and the memory writing means 11
4 and the TOC creating means 113 correspond to a scene title writing means. The ATN extracting means 111, the reproduced signal processing circuit 38, and the reproducing head 33 correspond to reproducing means, the memory reading means 115 corresponds to scene title reading means,
N comparison means 116, character data creation means 120, and display circuit 40
Corresponds to title output means.

[0087]

As described above, according to the present invention, the title of a scene can be displayed even when the reproduction is started from a portion other than the beginning of the scene. In this case, it is possible to obtain an advantageous effect that a scene can be easily searched and an easy-to-use image recording / reproducing apparatus can be provided.

[Brief description of the drawings]

FIG. 1 is a diagram schematically showing a track pattern of a magnetic tape recorded according to a consumer digital VTR standard.

FIG. 2 is a diagram schematically showing a configuration of a video sector.

FIG. 3 is a diagram schematically showing a structure of a subcode sector.

FIG. 4 is a diagram showing a recording format of subcode data.

FIG. 5 is a block diagram showing an internal configuration of the DVC according to the first embodiment of the present invention.

FIG. 6 is a block diagram showing processing of a display circuit of the DVC.

FIG. 7 is a timing chart of communication between a touch position decoding circuit of the DVC and a controller.

FIG. 8 is a map diagram showing the contents of a MAKER CODE pack of the DVC.

FIG. 9 is a map diagram showing contents of a BITMAP HEADER pack of the DVC.

FIG. 10 is a map diagram showing contents of a BITMAP pack of the DVC.

FIG. 11 is a diagram showing a recording order of one screen of 256 × 256 pixels of the DVC in a BITMAP pack.

[FIG. 12] Maker code pack and BI of the same DVC
It is a figure showing arrangement of TMAP HEADER pack and BITMAP pack on VAUX.

FIG. 13 is a block diagram showing an internal configuration of a DVC according to Embodiment 2 of the present invention.

FIG. 14 is a character table (hiragana) for character input of the DVC.

FIG. 15 is a block diagram showing a part of internal processing of a controller of the DVC.

FIG. 16 is a map diagram showing the contents of the memory of the cassette when one scene of the DVC is recorded.

FIG. 17 is a character table (alphanumeric) for character input of the DVC.

FIG. 18 is a character table (Katakana) for character input of the DVC.

FIG. 19 is a map diagram showing the contents of the cassette memory when the DVC scene 2 is recorded together with the title information.

FIG. 20 is a map diagram showing the contents of a cassette memory when title information is added to scene 1 of the DVC.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 Magnetic tape 2 Running direction of magnetic tape 3 Head scanning direction 4 ITI sector 5 Audio sector 6 Video sector 7 Subcode sector 11 Recording area of sync pattern in video sector 12 Recording area of ID in video sector 13 VAUX recording area 14 Video Data recording area 15 Parity recording area in video sector 21 Sync pattern recording area in subcode sector 22 ID recording area in subcode sector 23 Subcode data recording area 24 Parity recording area in subcode sector 32 Recording head 33 Playback head 34 Controller 35 Camera 36 Microphone 37 Record signal processing circuit 38 Playback signal processing circuit 39 Speaker 40 Display circuit 41 LCD panel 42 Touch panel 43 Touch position decode circuit 51 Frame memory 52 Memory write control unit 53 Memory 54 V Map map decoding unit 55 Memory read control unit 56 D / A conversion unit 57 Synchronization signal addition unit 61 Maker code pack pack header 62 Maker code pack manufacturer code 63 Total number of maker code packs 64 Reserved area of maker code pack 65 Format Code of Maker Code Pack 71 Pack Header of BITMAP HEADER Pack 72 Number of Pixels in BITMAP HEADER Pack in X Direction (Lower) 73 Number of Pixels in BITMAP HEADER Pack in X Direction (Upper) 74 Number of Pixels in BITMAP HEADER Pack in Y Direction ( (Lower) 75 Number of pixels in the Y direction of BITMAP HEADER pack (Upper) 81 Pack header of BITMAP pack 82 Bit ON / OFF of BITMAP pack (Lowest) 83 ITMAP pack of bit ON / OFF (3
Byte 84) Bit ON / OFF of BITMAP pack (2
(Byte No.) 85 Bit ON / OFF of BITMAP pack (most significant) 91 Maker code pack 92 BITMAP HEADER pack 93 BITMAP pack 94 Main area 101 Cassette 102 Memory 103 Controller 111 ATN extraction means 112 ATN creation means 113 TOC creation means 114 Memory note Loading means 115 memory reading means 116 ATN comparison means 117 coordinate character conversion means 118 input character storage means 119 character table creation means 120 character data creation means 121 switch 131 main area on memory 102 132 PROGRAM START pack for scene 1 133 scene 1 PROGRAM END pack 134 RECDTIME pack of scene 1 135 No Info pack 141 PROGRAM START pack of scene 2 142 PROGRAM END pack of scene 2 143 Recdt of scene 2 TEXT HEADER pack corresponding to TEXT HEADER pack 145 Scene 1 corresponding to ME pack 144 Scene 2

Claims (3)

[Claims] 1. An image recording / reproducing apparatus for recording and reproducing image information on a storage medium and outputting the reproduced image information to an image display means, comprising: Title input means for inputting, image information is recorded in an image information recording area of the recording medium,
Recording means for recording the corresponding title information as subcode information in a subcode information recording area of the same sector as the image information recording area and in all areas corresponding to the image information recording area in which the scene is recorded Reproducing means for reproducing image information and subcode information recorded on the recording medium; and title output means for outputting title information recorded as the subcode information to the image display means. Image recording and reproducing apparatus. 2. A recording medium according to claim 1, wherein the subcode information recording area is a sector different from the image information recording area, and the recording means is capable of overwriting the title information independently of the image information. 2. The image recording / reproducing apparatus according to 1. 3. Recording and reproducing image information on a storage medium stored in a cassette to which a storage element is attached,
An image recording / reproducing apparatus for outputting reproduced image information to image display means, comprising: title input means for inputting title information of a scene which is the continuous image information; and image information in an image information recording area of the recording medium. Record
Recording means for recording position information in a subcode information recording area of the recording medium; start position information which is position information of a start position of the scene; and end position information which is position information of an end position of the scene. A scene title writing unit that stores the title information in a storage element of the cassette; a reproduction unit that reproduces image information and position information recorded on the recording medium; and a start of the scene from a storage element of the cassette. Scene title reading means for reading start position information which is position information of a position, end position information which is position information of the end position of the scene, and title information corresponding to the scene; position information obtained from the reproducing means And the start position information and the end position information obtained from the scene title reading means, and An image recording / reproducing apparatus comprising: a title output unit that outputs the title information to the image display unit when the position of the image information is within the scene.