JPH06225049A - Still picture reproducing device - Google Patents

Abstract

PURPOSE:To smoothly scroll a still picture on a still picture reproducing device. CONSTITUTION:In the still picture reproducing device where a command is issued from a host computer 1 to a picture effect processor 2 by a still picture scroll display instruction and the picture is displayed while being scrolled by the picture effect processor 2, the host computer 1 is provided with a clock 3 which manages the reproducing time of a program (scroll still picture), and the slave processor (picture effect processor) 2 which controls the picture effect is provided with a clock 4 which can be interlocked with the host computer 1, and execution of the picture effect is interlocked with the host computer 1.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a still picture reproducing apparatus for scrolling and displaying a still picture.

[0002]

2. Description of the Related Art A still image reproducing apparatus of this type (for example, an exhibition type high-definition still image disk system) has a continuous scroll function for reproducing an image based on a story of a still image. The continuous scroll function is to move vertically or horizontally consecutive images upward or downward or left or right on the display image.

In this case, it is considered to be realized by reading out two display images in parallel while scrolling between the two images A and B shown in FIG. 6 (for example, HVC). Guidelines). For example,
As shown in FIG. 5, a command is issued from the host computer 1 to the screen effect processor 2 in response to a still image scroll display command, and the command causes the screen effect processor 2 to perform scroll display of two still images in the frame memory. To be done.

[0004]

However, in the above still picture reproducing apparatus, when the command is transferred from the host computer 1 to the screen effect processor 2, the control is disturbed for a certain period of time based on the command. That is, the scroll operation may stop. In particular, when a scrolling operation (continuous scrolling) is performed twice or more in order to scroll and display three or more images, the display screen does not become smooth due to the stop of the scrolling operation similar to the above.

The present invention has been made in view of the above problems, and an object of the present invention is to provide a still image reproducing apparatus capable of obtaining a smooth image without interrupting the scroll operation when scrolling a still image. To provide.

[0006]

In order to achieve the above object, the present invention uses a scroll display command for a still image to
In a still image reproducing device in which a command is issued from the host computer to the screen effect processor and the image is scroll-displayed by the screen effect processor, the host computer is provided with a clock for managing the reproduction time of a program (scroll still image), and The screen effect processor is equipped with a clock that can be linked with the same host computer, the screen effect execution is linked with the host computer, and the screen effect commands transferred in advance in batch at the same time as the program execution are executed in parallel with the host computer. It was possible.

Further, according to the present invention, in a still image reproducing apparatus for issuing a command from a host computer to a screen effect processor in response to a scroll display command for a still image and scrolling the image by the screen effect processor,
Program on the host computer (scroll still image)
A clock that manages the playback time of the screen effect processor is provided, and a clock that enables the screen effect processor to be linked with the host computer is also provided. , The command of the kind of the command and the content of the parameter is transferred, and the screen effect processor executes the screen effect command sent by its own clock.

[0008]

In the still picture reproducing apparatus having the above structure, the picture effect command in the picture effect processor is executed based on the clock, and this clock is operated in synchronization with the clock of the host computer.

Before the program is executed, the screen effect commands transferred in advance in a batch are executed in parallel with the host computer, and the screen effects are time-controlled by the clock of the screen effect processor itself. Therefore, when scrolling and displaying a plurality of still images, smooth continuous scrolling can be realized without disturbance of time.

Further, instead of the batch transfer of the screen effect command, the command execution time, the type of the command, the contents of the parameters, etc. are transferred a fixed time before the screen effect execution time. Since the screen effect processor executes the screen effect command transferred by its own clock, it is possible to realize smooth continuous scrolling when scrolling and displaying a plurality of still images in the same manner as described above.

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT An embodiment of the present invention will be described below with reference to FIGS. In the figure, the same parts as those in FIG. 2 and 4, DRD means an image read command, CUT means a simple cut command, and RVU means a satellite command.

In FIG. 1, the still picture reproducing apparatus of the present invention is provided with a clock 3 for managing the reproduction time of a program (scroll still picture) in the host computer 1, and a slave processor (screen effect) for controlling the screen effect. The processor 2 is provided with a clock 4 that can be linked with the host computer 1.

Before executing the above program,
The reproduction control command (data) 5 for controlling the screen effect is collectively transferred as the screen effect data to the screen effect processor 2, and the reproduction control command is stored in the reproduction control command storage area (screen effect data) 6 of the same screen effect processor 2. Stores (data). After that, screen effect processor 2
Sequentially controls the screen effect based on its own clock 4, and the screen display of the still image is executed according to the reproduction control command in the reproduction control command storage area 6.

The command from the host computer 1 to the screen effect processor 2 is composed of information such as command execution time (lap time command) and parameters (effect time in the case of scroll command).

Therefore, for example, in the case of vertical scrolling, a reproduction control command (screen effect data) 5 shown in the schematic diagram of FIG. 2 is transferred to the screen effect processor 2 by the host computer 1 in advance before the program is executed. . At the beginning of program execution, the clock 3 of the host computer 1 is reset in synchronization with the start of the audio CD. After resetting the reference clock that controls the program execution, the host computer 1 resets the clock 4 of the screen effect processor 2 in synchronization with the start of the command execution time (lap time) of the host computer 1.

As a result, the screen effect processor 2 can execute the screen effect command concurrently with the host computer 1. That is, the screen effect processor 2 can execute a command that has been transferred in advance based on the time of the clock 4 that is linked with the clock 3 of the host computer 1.

Although the clock 2 of the host computer 1 and the clock 4 of the screen effect processor 2 may be out of phase with each other, the screen effect is controlled by the clock 4 of the screen effect processor 2 itself (time for executing the screen effect command). Time management does not cause time disturbance.

Then, the screen effect processor 2 sends the next same roll command to one field (1/6) before the end of the roll command being executed in the execution of the continuous scroll.
If the processing is guaranteed within 0 second, the screen effect processing can be continuously executed. As a result, three or more still images stored in the frame memory can be smoothly scroll-displayed.

FIG. 3 is a schematic block diagram showing another embodiment of the present invention. In this embodiment, as shown in the schematic diagram of FIG. 4, a command (command execution time, etc.) is issued to the screen effect processor 2 before a fixed time (Δt) except for issuing a command interlocking with the clock 3 of the host computer 1. )
Is transferred to the control register 7 that controls the screen effect processor 2 (see the schematic diagram of FIG. 4).

As in the previous embodiment, the screen effect processor 2 controls the screen effect based on its own clock 4.
The command from the host computer 1 to the screen effect processor 2 is composed of information such as a command execution time (lap time command) and parameters (effect time in the case of a scroll command).

At the beginning of program execution, the voice C
Clock 3 of the host computer 1 in conjunction with the start of D
Is reset. After resetting the reference clock that controls the program execution, the clock 4 of the screen effect processor 2 is reset by the host computer 1 in synchronization with the start of the command execution time (lap time) of the host computer 1, and at the same time, the screen effect. The command is transferred.

Further, as shown in FIG. 4, the transfer of the command after the start of the command execution time is performed a predetermined time (Δt) before the specified time, and in advance, the screen effect processor 2
The command execution time, command type and parameter contents are transferred as a screen effect command to the register that controls.

As a result, the screen effect processor 2 controls and executes the screen effect command transferred by its own clock 4. That is, the screen effect processor 2 can execute a command that has been transferred in advance a predetermined time (Δt) based on the time of the clock 4 that is linked with the clock 3 of the host computer 1.

Then, the screen effect processor 2 sends the next same roll command in one field (1/60) before the end of the roll command being executed in the execution of continuous scrolling.
If the processing is guaranteed within (seconds), the screen effect processing can be continuously executed. As a result, three or more still images stored in the frame memory can be smoothly scroll-displayed.

[0025]

As described above, according to the still image reproducing apparatus of the present invention, the host computer is provided with the clock for managing the reproduction time of the program (scroll still image) and the slave processor for controlling the screen effect is provided. Since the (screen effect processor) is provided with a clock that can be linked with the host computer and the screen effect is linked with the host computer, three or more still images can be smoothly scroll-displayed.

[Brief description of drawings]

FIG. 1 is a schematic block diagram of a still image reproducing apparatus according to an embodiment of the present invention.

FIG. 2 is a schematic diagram for explaining the operation of the still image reproducing apparatus shown in FIG.

FIG. 3 is a schematic block diagram of a still image reproducing apparatus according to another embodiment of the present invention.

FIG. 4 is a schematic diagram for explaining the operation of the still image reproducing apparatus shown in FIG.

FIG. 5 is a scroll screen diagram of the still image reproducing apparatus.

FIG. 6 is a schematic block diagram of a conventional still image reproducing apparatus.

[Explanation of symbols]

 1 Host Computer 2 Screen Effect Processor 3, 4 Clock 5 Playback Control Data (Command) 6 Screen Effect Data (Playback Control Command Storage Area) 7 Control Register

Claims (2)

[Claims] 1. A scroll display command for a still image,
In a still image reproducing device in which a command is issued from the host computer to the screen effect processor and the image is scroll-displayed by the screen effect processor, a program (scroll still image) is displayed on the host computer.
A clock that manages the playback time of the screen effect processor and a clock that enables the screen effect processor to be linked with the host computer are linked, and the screen effect execution is linked with the host computer. A still image reproducing device characterized in that a screen effect command can be executed concurrently with the host computer. 2. A scroll display command for a still image,
In a still image reproducing device in which a command is issued from the host computer to the screen effect processor and the image is scroll-displayed by the screen effect processor, a program (scroll still image) is displayed on the host computer.
A clock that manages the playback time of the screen effect processor is provided, and a clock that enables the screen effect processor to be linked with the host computer is also provided. A still image reproducing apparatus characterized in that a command of a command type and a parameter content is transferred, and the screen effect processor executes the screen effect command sent by its own clock.