JP3311020B2 - Image processing apparatus and method - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an image processing apparatus and a method thereof.
Law, specifically the output of packetized image data.
Image processing apparatus and image processing method for force processing and reproduction processing
It is about the law .

[0002]

2. Description of the Related Art In recent years, high-definition images have been attracting attention as providing high-definition images to users, and high-definition still images intended for use in art works such as paintings, animations, and product catalogs. Program file systems are being developed. Various methods are conceivable as the still picture program file system, but a method of compressing an image signal by high-efficiency coding, transmitting packet data as digital data, and recording and reproducing the data is considered to be promising.

[0003] In addition to high-efficiency encoded image data, one screen control packet is added to basic image information indicating one basic screen. The screen control packet data includes screen effect information for performing display switching from the previous screen to the next screen in accordance with various patterns such as wipe and scroll in addition to normal cut switching, and time when the screen is displayed on the monitor. The screen display time information described above is included, and by using these control packet data, the screen display method is diversified, and the program is devised so as to be more enjoyable.

In the above-described file system, when viewed from the user side, there is a demand for viewing the image slowly or for printing out the image. The function of stopping (hereinafter referred to as “pause”) is essential. The first pause method is a method for stopping the decoding operation of the decoder.
The third method is a method of stopping data output from the data storage unit, and the third method is a method of stopping both data output and decoding operation.

[0005]

However, the above-described conventional pause method has the following problems. First, in the first pause method, only the data decoding process is temporarily suspended by the image data decoding control unit.
One data storage unit continues normal data output even during pause. Therefore, when the pause command is released, decoding is restarted from time-delayed image data that has no continuity at all.

In the second pause method, only the output of data is temporarily suspended by the image data output control unit. For this reason, in the one image data decoding unit, the screen display time obtained by the screen control packet is valid because the timer counter is continuously operated, and therefore, the screen is switched despite the pause. Screen effect will occur.

In the third pause method, a transmission line dedicated to pause is required in addition to the packet data transmission line, and the system configuration is complicated. The present invention relates to the above first to third embodiments.
And an image processing apparatus capable of solving all or at least one of the problems in the above-described pose method.
The purpose is to provide a method .

[0008]

In order to achieve the above object, an image processing apparatus according to the present invention reads image packet data from a recording medium on which packetized image data is recorded.
Means for outputting the image packet data , instruction means for instructing suspension of reproduction of the image packet data or release of the suspension, and the finger
Display of the image packet data according to the output of the display means.
Identification packet corresponding to suspension or release of the suspension
Generating means for generating data ; and responding to the output of the instruction means.
The image packet data and the identification packet data
Output means for selectively outputting to an external playback device
It is characterized by that.

Further , the image processing method of the present invention provides a
An image packet from a recording medium on which
Reading out the image packet data;
Instructor to instruct playback pause or release of the pause
The image packet data according to the instruction of the instruction step.
Data playback operation pause or release
Generating identification packet data to be identified;
The image packet data and the identification according to the instruction of the display step.
Selectively output another packet data to an external playback device
And an output step.

[0010] The image processing apparatus of the present invention may be an external device.
Receiving means for receiving packet data from the
Whether the received packet data is image packet data or
Pause or temporarily stop the playback operation of the image packet data
Determine whether the packet is identification packet data corresponding to the release of suspension.
Discriminating means for discriminating; and
Control means for controlling the operation of reproducing the image packet data;
It is characterized by having. Further, the image processing method of the present invention
The method includes the step of receiving packet data from an external device.
And the received packet data is the image packet data.
The image packet data,
Identification packet data corresponding to suspension or release of the suspension
And a discriminating step of discriminating whether or not the
Controlling the reproduction operation of the image packet data according to the result
And a control step of performing the control.

[0011]

Preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings. FIG. 1 is a block diagram showing a schematic configuration of a still picture program recording / playback apparatus according to an embodiment of the present invention. In FIG. 1, in a still picture program storage apparatus 10, an image data storage section 11 serves as a recording medium. A magneto-optical disk (hereinafter referred to as OMD) is used.
Further, the data output control unit 13 includes the image data storage unit 11.
Is controlled so that the image packet data output from is output at a predetermined reproduction rate.

In the still picture program storage device 10 according to the present embodiment, the data reproduction rate from the OMD varies due to head seek or the like. To 30,
The packet data is sent out at a predetermined fixed rate. In FIG. 1, reference numeral 16 denotes an operation unit for generating a pause command.

On the other hand, in the still image decoding device 20, the pause packet judging unit 19 judges the type of the packet received from the packet transmission path 30, and if it is an image packet, sends it to the image data decoding unit 21. The image data decoding unit 21 decodes an image packet according to a high-efficiency compression method for image data, converts the image data into a video signal, and displays the image on a monitor (not shown) from a terminal 25 on a screen.

The decoding processing sequence is controlled by the image data decoding control unit 23. Next, an operation procedure of the pause function in the present embodiment will be described. FIG.
6 is a flowchart showing an operation procedure of a pause function in the still picture program recording / reproducing apparatus according to the embodiment. In the figure, in step S1, the user of the apparatus transmits a pause command to the image data output control unit 13 using a terminal or a switch. Upon receiving the pause command, the image data output control unit 13 immediately starts the image data storage unit 11 and the buffer 15.
Then, a signal to stop outputting the image packet is transmitted to prohibit the transmission of the image packet to the packet transmission path 30 (step S2).

The above-mentioned signal, that is, a signal for stopping the output of the image packet, is input to the pause packet generator 17, and upon receiving this signal, a predetermined pause packet is transmitted to the packet transmission line 30. . Here, a packet format according to the present embodiment will be described. 3 to 5 show packet formats in the apparatus according to the present embodiment. FIG. 3 shows a pause packet and FIG.
FIG. 5 shows the structure of an image information packet, and FIG. 5 shows the structure of a screen control packet.

The format of the pause packet shown in FIG.
20 bytes same as image information packet and screen control packet
The first byte is a code for the ID, and here is a bit pattern of “11110000”. Similarly, as for the image information packet, as shown in FIG.
The screen control packet is assigned an ID code indicating the type of the packet, such as “01010101” (FIG. 5). Also, the MSB of the second byte of the pause packet
When "1" is set to (bit 201), it means "pause start", and when "0" is set, "pause release" is indicated.

When the pause packet generator 17 receives a signal indicating a pause from the data output controller 13, the pause packet generator 17 sends a pause packet having the format shown in FIG. Here, it is assumed that the pause packet generator 17 is configured by a ROM. In step S4 of the flowchart shown in FIG. 2, the pause packet transmitted to the packet transmission path 30 is input to the pause packet determination unit 19 of the still image decoding device 20, where the type of the packet is determined.

Specifically, the first byte of the packet including the ID information of the received packet is detected, and its bit pattern is set to “11001100” or “01010”.
When the bit pattern is "101", the packet is determined to be an image information packet or a screen control packet, and the received packet is sent to the image data decoding unit 21 (step S5). Therefore, in step S6, a signal indicating a pause is transmitted to the image decoding control unit 23. Then, the image data decoding unit 23 receiving the signal indicating the pause is transmitted.
Immediately suspends image data decoding of the image data decoding unit 21 in step S7, and in the subsequent step S8,
The time counter for operating the screen effect is stopped.

As for the release of the pause, as described above, the pause packet determination section 19 shown in FIG. 1 detects the bit of the pause packet in which the bit 201 shown in FIG. The judgment is made. As described above, according to the present embodiment, the pause command is transmitted to the data output control unit, and when the data output control unit recognizes the command, the stored data is temporarily stopped, and a predetermined pause packet is decoded. By transmitting to the unit, the data decoding unit can temporarily stop the time counter that operates the data decoding and the screen effect when the pause packet is recognized, using the same transmission path as the image packet, At the same time, there is an effect that both processes of the storage unit and the data decoding unit can be temporarily stopped.

In the above embodiment, the pause operation in the image display has been described. However, the pause of "voice" can be performed with the same configuration. Also, the present invention
The present invention may be applied to a system including a plurality of devices or an apparatus including a single device. Also, the present invention
It goes without saying that the present invention can also be applied to a case where the above is achieved by supplying a program to a system or an apparatus.

[0021]

As described above, according to the present invention,
Temporary stop or pause of the playback operation of image packet data
Transmission / reception of identification packet data corresponding to release of suspension
Controls the playback operation of image packet data with a simple configuration
Can be

[Brief description of the drawings]

FIG. 1 is a block diagram showing a schematic configuration of a still picture program recording / playback apparatus according to an embodiment of the present invention.

FIG. 2 is a flowchart showing an operation procedure of a pause function in the still picture program recording / playback apparatus according to the embodiment.

FIG. 3 is a diagram illustrating a configuration of a pause packet in the device according to the embodiment.

FIG. 4 is a diagram illustrating a configuration of an image information packet in the device according to the embodiment.

FIG. 5 is a diagram illustrating a configuration of a screen control packet in the device according to the embodiment.

[Explanation of symbols]

 REFERENCE SIGNS LIST 10 still image program storage device 11 image data storage unit 13 image data output control unit 15 buffer 17 pause packet generation unit 19 pause packet determination unit 20 still image decoding device 21 image data decoding unit 23 image data decoding control unit

Continuation of the front page (58) Field surveyed (Int.Cl. ⁷ , DB name) G06F 13/00 H04L 12/56 H04N 5/93 H04N 7/24

Claims (4)

(57) [Claims] 1. A packetized image data is recorded.
Means for reading out the image packet data from the recording medium ; instruction means for instructing suspension of the reproduction of the image packet data or release of the suspension; and outputting the image packet data in response to the output of the instruction means.
An identification pattern corresponding to pause of playback or release of the pause
A generating means for generating packet data, and the image packet data in accordance with the output of said instruction means
Selectively output the identification packet data to an external playback device.
Image processing apparatus, comprising:
Place. 2. Packetized image data is recorded.
Reading image packet data from the recording medium; Suspending or suspending the reproduction of the image packet data;
An instruction step for instructing release of the suspension, In response to the instruction in the instruction step, the image packet data
The information corresponding to the pause of the playback operation or the release of the pause
A generating step of generating another packet data; The image packet data according to the instruction in the instruction step;
Selectively output the identification packet data to an external playback device.
Image processing method comprising:
Law. 3. Receiving packet data from an external device
Receiving means, wherein the received packet data is image packet data;
Or pause of the reproduction operation of the image packet data
Or the identification packet data corresponding to the release of the suspension
Determining means for determining whether or not the image packet data is present;
Control means for controlling the reproduction operation of the data
Image processing apparatus. 4. Receiving packet data from an external device
A receiving step, wherein the received packet data is image packet data.
Or pause of the reproduction operation of the image packet data
Or the identification packet data corresponding to the release of the suspension
A discriminating step of discriminating whether or not the image packet data is present,
And a control step of controlling a reproduction operation of the data.
Image processing method.