JP2001145054A - Edit system using bus converter - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an edit system using a bus converter by which even devices having serial buses of different transmission systems can transmit signals through the serial buses while the signals are edited. SOLUTION: A frame unit AVS separation means (13) separates all digital streams (DS1) outputted from a digital VTR (10) at a high data transmission rate through a high rate bus interface means (BI1) into video digital streams, audio digital streams and sub code digital streams. An interleave means (14), a memory (15) and a low speed read means (16) are used to interleave DC and AC components in the video digital streams by an optional number of frames among all the frames and extract the resulting video digital streams at a low speed thereby converting and editing the digital streams into a form of digital streams at a low data transmission rate, and the resulting digital streams are transmitted to a personal computer (18) through a low rate bus interface means (BI2).

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for transmitting a signal through a serial bus between devices having serial buses of different transmission systems depending on the data transmission rate, protocol and signal form. The present invention relates to an editing system using a bus converter for converting the data into a form corresponding to the transmission system of the present invention.

[0002]

2. Description of the Related Art Conventionally, in a personal computer system, for example, the connection between a personal computer and its peripheral devices is based on a data transmission rate, which is a standard of transmission speed, and a transmission method based on a signal format such as a protocol or a data format which is a transmission procedure. Correspondingly, fixed cables and signal transmission systems were used.

[0003] Recently, however, serial buses of different systems have been proposed as signal transmission speeds up. Among them, audio-visual systems, which are consumer devices especially as personal computer peripheral devices, usually have one or two types of input / output buses for their miniaturization. The transmission method is different from that of the serial bus of a personal computer, and there are many cases where a serial bus that is not suitable for connection with a personal computer or the like via the serial bus is provided.

In recent years, for example, in personal computers, U
Although the SB bus has been widely used, a camera-integrated VTR (commonly referred to as a movie), which is one of the consumer audiovisual systems, is IEEE.
IEEE 1394 bus standardized by
A bus input / output terminal (DV terminal or the like) corresponding to the IEEE 1394 bus is mounted.

[0005]

In the conventional audio-visual system and personal computer as described above, the transmission system differs between these serial buses due to the difference in data transmission rate, protocol and signal form. In addition to a direct connection between the serial buses, there is a problem that communication between the audiovisual system and the personal computer cannot be performed at all.

SUMMARY OF THE INVENTION The present invention solves the above-mentioned conventional problems. Signals can be transmitted between devices having serial buses having different data transmission rates and protocols such as protocols and signal formats through these serial buses. Provided is an editing system using a bus converter that can communicate and transmit the transmission signal while editing the transmission signal when transmitting the signal.

[0007]

SUMMARY OF THE INVENTION In order to solve the above-mentioned problems, an editing system using a bus converter according to the present invention uses a high-speed bus interface means for transmitting high data from a digital VTR used for reproduction. All digital streams including the AV / subcode digital stream and the control signal output at the transmission rate are separated into a video digital stream and an audio digital stream. After converting and editing into the form of a digital stream with a low data transmission rate by thinning out the DC component and the AC component in the video digital stream of
The data is transmitted to the personal computer through the low-rate bus interface means.

Further, all digital streams including the AV / subcode digital stream and the control signal output at a low data transmission rate from the personal computer through the low-rate bus interface means are converted into a video digital stream and an audio digital stream. The video digital stream is separated into streams, and the full size of the video digital stream is extracted multiple times at high speed for each frame, the audio digital stream is also divided and extracted according to the number of extractions, and they are connected for each extraction. After being converted into a digital stream form having a high data transmission rate by being made continuous, the digital stream is transmitted to a digital VTR used for recording through a high-rate bus interface means.

As described above, it is possible to communicate by transmitting signals through the serial buses between devices having serial buses having different data transmission rates, protocols, signal formats, and other transmission methods. At this time, the transmission signal can be transmitted with editing.

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An editing system using a bus converter according to the first aspect of the present invention is an editing system comprising an audio digital stream, an audio digital stream, and a subcode digital stream signal such as a time code.
All digital streams, including V / subcode digital streams and control signals for controlling devices, are externally input / output through high-rate bus interface means capable of inputting / outputting at a high data transmission rate according to a prescribed method. A digital VTR used for reproduction of all the digital streams, and all the digital streams are externally input / output through low rate bus interface means capable of inputting / outputting at a low data transmission rate according to a predetermined method. A personal computer, and the digital VTR and the personal computer have serial buses of different transmission systems depending on the transmission rate and the protocol or signal form for input / output of each digital stream to the outside, It When the digital stream has a different format due to the difference in the transmission method, when the digital VTR and the personal computer transmit the digital stream through respective serial buses, the formats of the digital stream are mutually exchanged. An editing system using a bus converter provided for conversion and editing corresponding to a serial bus transmission method, wherein the editing system is obtained from the digital VTR via the high-rate bus interface means. For the AV / subcode digital stream,
A frame unit AVS separating unit for separating the audio digital stream forming an audio signal unit, the video digital stream forming a video signal unit, and the subcode digital stream in the frame unit;
With respect to the video digital stream separated by the S separation means and continuous in frame units, a thinning means for thinning out the video digital stream for an arbitrary number of frames from among several frames, A video digital stream for an arbitrary number of frames, a memory for storing and storing all the audio digital streams and sub-code digital streams continuous in frame units, and the arbitrary number of frames stored in the memory. When reading the video digital stream and the audio digital stream and the sub-code digital stream for all the frames, the video digital stream and the entire audio digital stream are read as the AV / sub-code digital stream from the digital VTR. Transmission method Low-speed reading means for converting into a low-data-rate AV / sub-code digital stream having a different format due to a difference in data format; and the low-data-rate AV / sub-code digital stream obtained from the low-speed reading means. The high-rate bus interface means, the frame-based AVS separation means, the thinning means, the low-speed reading means, and the low-rate bus interface so that input / output with the personal computer can be performed via the low-rate bus interface means. Main control means for generating a timing control signal for controlling the means.

According to a second aspect of the present invention, there is provided an editing system using a bus converter. For every several frames, a DC component for small-screen display and an AC component for full-screen display of the video digital stream for one arbitrary frame are thinned out.

According to a third aspect of the present invention, there is provided an editing system using the bus converter, wherein the thinning means according to the first aspect is applied to the video digital stream separated by the frame unit AVS separation unit and continuous in frame units. , A DC component for small screen display of the video digital stream for all frames is thinned out. An editing system using the bus converter according to the fourth aspect controls an AV / subcode digital stream including a video digital stream, an audio digital stream, and a subcode digital stream signal such as a time code as data, and a device. All digital streams, including control signals, for input and output to the outside through high-rate bus interface means capable of inputting and outputting at a high data transmission rate according to a prescribed method, and used for reproduction of all the digital streams A digital VTR, and a personal computer for externally inputting / outputting all the digital streams through low-rate bus interface means capable of inputting / outputting at a low data transmission rate according to a predetermined method. The personal computer has serial buses of different transmission systems depending on the transmission rate, protocol, and signal form for inputting and outputting each digital stream to and from the outside. When the digital VTR and the personal computer transmit the digital stream through their respective serial buses when the formats are different due to differences, the formats of the digital streams are made to correspond to each other according to the transmission system of the serial bus. An editing system using a bus converter provided for conversion and editing, wherein said bus converter is provided with an audio / video / subcode digital stream obtained from said digital VTR via said high-rate bus interface means. And that frame A frame unit AVS separating unit that separates the audio digital stream forming the audio signal unit and the video digital stream forming the video signal unit and the subcode digital stream, and a frame unit separated by the frame unit AVS separating unit. With respect to the continuous video digital stream, thinning-out means for thinning out the video digital stream for an arbitrary number of frames from the several frames, and the video for an arbitrary number of frames thinned out by the thinning-out means A memory for storing and storing only digital streams, and a video digital stream for the arbitrary number of frames stored in the memory, which is read out from the digital VTR by the digital VTR.
/ The sub-code digital stream has a low data transmission rate V /
A low-speed reading means for converting into a sub-code digital stream; and the low-speed data transmission rate V / sub-code digital stream obtained from the low-speed reading means, through the low-rate bus interface means. The high-rate bus interface means, so that input and output can be performed between
The system includes a frame unit AVS separation unit, a thinning unit, a low-speed reading unit, and a main control unit that generates a timing control signal for controlling the low-rate bus interface unit.

According to a fifth aspect of the present invention, there is provided an editing system using the bus converter, wherein the thinning means according to the fourth aspect is applied to the video digital stream separated by the frame unit AVS separation unit and continuous in frame units. For every several frames, the full-size DC component for small-screen display and the AC component for full-screen display of the video digital stream for an arbitrary number of continuous frames are thinned out as blocks.

According to a seventh aspect of the present invention, an editing system using the bus converter includes a video digital stream,
A high data transmission rate for all digital streams including an AV / subcode digital stream composed of an audio digital stream and a subcode digital stream signal such as a time code, and a control signal for controlling a device according to a predetermined method. A first digital VTR used for reproduction of all the digital streams, which is input / output to / from the outside through high-rate bus interface means capable of inputting / outputting the data, and converting all the digital streams into high data according to a predetermined method. A second digital V which is input / output to / from the outside through high-rate bus interface means capable of input / output at a transmission rate, and is used for recording all the digital streams.
TR and a personal computer for externally inputting / outputting all the digital streams through low-rate bus interface means capable of inputting / outputting all digital streams at a low data transmission rate according to a predetermined method.
Digital VTR and personal computer, for input and output of each digital stream to the outside,
The first and second digital VTs have serial buses having different transmission systems depending on their transmission rates, protocols and signal formats, and their digital streams have different formats due to the different transmission systems.
A bus converter provided for converting and editing the format of the digital stream in accordance with the transmission method of the serial bus when transmitting the digital stream through the respective serial buses between the R and the personal computer; Editing system using an audio / video / subcode digital stream obtained from the first digital VTR via the high-rate bus interface means.
A frame unit AVS separating unit for separating the audio digital stream forming an audio signal unit, the video digital stream forming a video signal unit, and the subcode digital stream in the frame unit;
With respect to the video digital stream separated by the S separation unit and continuous in units of frames, a thinning unit that thins out and extracts an arbitrary number of frames of the video digital stream from the several frames, A video digital stream for an arbitrary number of frames, a memory for storing and storing all the audio digital streams and sub-code digital streams continuous in frame units, and the arbitrary number of frames stored in the memory. When reading the video digital stream and the audio digital stream and the sub-code digital stream for all the frames, the video digital stream and the entire audio digital stream are read out from the first digital VTR by the AV / sub-code digital stream. What is a stream Low-speed reading means for converting into a low data transmission rate AV / subcode digital stream having a different format depending on a transmission system; and an AV from the first digital VTR through the low-rate bus interface means from the personal computer. A low-speed writing means for writing an AV / sub-code digital stream having a low data transmission rate in the memory, the format of which differs from the format of the sub-code digital stream depending on the transmission method; A high-speed continuous reading method for continuously reading an AV / subcode digital stream having a data transmission rate from the memory as an AV / subcode digital stream having a data transmission rate higher than the data transmission rate. If, AV of the low data transmission rate obtained from the low-speed readout means
The digital stream can be input / output to / from the personal computer via the low-rate bus interface means, and the high data transmission rate AV / sub code obtained from the high-speed continuous reading means. The high-rate bus interface means, the frame-based AVS separation means, the thinning means, the low-speed reading so that a digital stream can be input / output to / from the second digital VTR via the high-rate bus interface means. And a main control means for generating a timing control signal for controlling the high-speed continuous reading means.

According to an eighth aspect of the present invention, in an editing system using a bus converter, the thinning means according to the seventh aspect is adapted to apply the thinning means to the video digital stream separated by the frame unit AVS separation means and continuous in frame units. In each of several frames, the DC component for small-screen display and the AC component for full-screen display of the video digital stream for one arbitrary frame are thinned out.

According to a ninth aspect of the present invention, there is provided an editing system using the bus converter, wherein the data is a video digital stream,
A high data transmission rate for all digital streams including an AV / subcode digital stream composed of an audio digital stream and a subcode digital stream signal such as a time code, and a control signal for controlling a device according to a predetermined method. A first digital VTR used for reproduction of all the digital streams, which is input / output to / from the outside through high-rate bus interface means capable of inputting / outputting the data, and converting all the digital streams into high data according to a predetermined method. A second digital V which is input / output to / from the outside through high-rate bus interface means capable of input / output at a transmission rate, and is used for recording all the digital streams.
TR, a personal computer for inputting / outputting all the digital streams through a low-rate bus interface capable of inputting / outputting the digital stream at a low data transmission rate in a predetermined manner, and a personal computer connected to the personal computer and connected to the personal computer. And a personal computer display for displaying information during execution of the processing in the first and second digital VTRs and the personal computer. If the serial buses have different transmission systems depending on the protocol and the signal form, and their digital streams have different formats due to the different transmission systems, the first and second digital VTRs and the personal computer must be connected to each other. And it When transmitting the digital stream through the serial bus, an editing system using a bus converter provided for converting and editing the format of the digital stream mutually in accordance with the transmission system of the serial bus. The bus converter includes, for the AV / subcode digital stream obtained from the first digital VTR via the high-rate bus interface means, the audio digital stream forming an audio signal unit in frame units; A frame-unit AVS separation unit that separates the video digital stream and the sub-code digital stream that form a video signal unit, and a number of the video digital streams separated by the frame-unit AVS separation unit and that are continuous in frame units. Any number of frames Thinning-out means for thinning out the video digital streams for frames, the video digital streams for an arbitrary number of frames thinned out by the thinning-out means, all the audio digital streams and sub-code digitals which are continuous in frame units Memory for storing and storing the streams, and when reading out the video digital stream for the arbitrary number of frames and the audio digital stream and the sub-code digital stream for all the frames stored in the memory, the To convert the digital stream and the entire audio digital stream into a low data transmission rate AV / subcode digital stream having a format different from that of the AV / subcode digital stream from the first digital VTR due to a difference in transmission system. Low-speed reading means, from the personal computer through the low-rate bus interface means,
A low-speed writing unit for writing, in the memory, an AV / sub-code digital stream having a low data transmission rate having a format different from that of the AV / sub-code digital stream from the first digital VTR due to a difference in transmission system; High-speed continuous reading means for continuously reading the AV / subcode digital stream of a lower data transmission rate written in the memory from the memory as an AV / subcode digital stream of a higher data transmission rate than the data transmission rate And the AV / subcode digital stream of the low data transmission rate obtained from the low-speed reading means can be input / output to / from the personal computer via the low-rate bus interface means. The high data rate AV / subcode digital stream obtained from the high-speed continuous reading means can be input / output to / from the second digital VTR via the high-rate bus interface means. A main unit for generating a timing control signal for controlling the high rate bus interface means, the frame unit AVS separation means, the thinning means, the low speed reading means, the low rate bus interface means, the low speed writing means, and the high speed continuous reading means; Control means, and a timing control signal from the main control means,
The low-speed reading means displays the AV / subcode digital stream of the low data transmission rate taken into the personal computer via the low-rate bus interface means on the personal computer display, and displays the display image. The AV / subcode digital stream taken into the personal computer is stored and saved at an editing point determined by an operation instruction given by the user to the personal computer while watching the data. To
With respect to the video digital stream separated by the frame-unit AVS separation unit and continuous in frame units, only the DC component for small-screen display of the video digital streams of all frames is thinned out.

[0017] An editing system using the bus converter according to claim 10 is an editing system using claim 7 or 8 or 9.
An analog VTR is connected to an output terminal for analog video and audio signals of the first digital VTR via an analog bus, and a bus converter is connected to the outside of the first digital VTR. An infrared signal transmitting means for transmitting an infrared signal for remote control operation can be connected based on the analog VTR mounted on the housing by the infrared signal from the infrared signal transmitting means. The first digital VTR and the analog VTR are configured to be controlled by a remote controller through a light receiving unit for infrared rays based on an instruction from the personal computer.
By controlling the TR through the main control means, editing is performed between the first digital VTR and the analog VTR.

An editing system using the bus converter according to claim 11 is an editing system using the editing system.
In accordance with the timing control signal from the main control means, the low-speed readout means transfers the low data transmission rate AV / subcode digital stream taken into the personal computer to the personal computer display via the low-rate bus interface means. An image is displayed, and the editing point determined by the operation instruction given to the personal computer by the user while viewing the displayed image is further edited in accordance with the operation instruction by the user, and the edited point is imported to the personal computer. Generating a new AV / subcode digital stream different from the AV / subcode digital stream, via the low-rate bus interface means,
It is configured to transmit to the bus converter.

According to the above arrangement, all digital / video signals including the AV / subcode digital stream and the control signal output at a high data transmission rate from the digital VTR used for reproduction through the high rate bus interface means. By separating the digital stream into a video digital stream and an audio digital stream, of the video digital stream, the DC component and the AC component in the video digital stream for an arbitrary number of frames are decimated from all frames and extracted at low speed. After being converted and edited into the form of a digital stream with a low data transmission rate, it is transmitted to the personal computer through the low-rate bus interface means.

An editing system using the bus converter according to the present invention provides a video digital stream,
A high data transmission rate for all digital streams including an AV / subcode digital stream composed of an audio digital stream and a subcode digital stream signal such as a time code, and a control signal for controlling a device according to a predetermined method. A digital VTR used to record and output all the digital streams through a high-rate bus interface means capable of inputting and outputting data, and all the digital streams at a low data transmission rate according to a predetermined method. A personal computer for inputting and outputting to the outside through a low-rate bus interface capable of inputting and outputting, wherein the digital VTR and the personal computer transmit and receive the digital streams for inputting and outputting the digital streams to and from the external device; If the digital VTR and the personal computer each have a serial bus having a different transmission method depending on the protocol and protocol or signal form, and their digital streams have different formats due to the difference in the transmission method, When transmitting the digital stream through the serial bus, an editing system using a bus converter provided to convert and edit the format of the digital stream mutually corresponding to the transmission system of the serial bus, In the bus converter, every other frame of the continuous video digital stream in the low data transmission rate digital stream obtained from the personal computer via the low rate bus interface means, the video digital stream for one frame is provided. A first memory gate writing means for writing into the memory the beam data by the gate, 1 from the first memory gate writing means
A first memory for storing data of a video digital stream for a frame, and a continuous video digital stream in a low data transmission rate digital stream obtained from the personal computer via the low rate bus interface means, The first
A second memory gate writing unit that gates the data of the video digital stream for one frame other than the target by the memory gate writing unit and writes the data into the memory;
A second memory for storing data of a video digital stream for one frame from the second memory gate writing means, and a digital stream having a low data transmission rate obtained from the personal computer via the low-rate bus interface means And audio division and compression means for dividing the continuous audio digital stream into an arbitrary number of pieces and compressing the divided data, and from the first memory,
At the same time as reading out the data of the video digital stream several times at a high data transmission rate, the data of each audio digital stream divided and compressed by the audio division and compression means is converted into the data of the video digital stream of each frame for each of the reading times A first memory reading means for adding and outputting the data, and reading the stored one-frame video digital stream data from the second memory several times at a high data transmission rate for each video digital stream data. At the same time, a second memory reading means for adding the data of each audio digital stream divided and compressed by the audio dividing and compressing means to the data of the video digital stream of each frame for each of the reading times and outputting the data, From each of the first and second memory reading means. Mixing means for mixing digital streams composed of video digital stream data and audio digital stream data having a high data transmission rate, and a clock obtained through the clock extracting means from the low data transmission rate digital stream from the personal computer. , A timing control signal for controlling the low-rate bus interface means and the high-rate bus interface means, and controlling the write clock generation means and the read clock generation means to control the first and second memory gates. A main controller for generating a timing control signal and a clock signal for controlling the writing means, the first and second memories, and the first and second memory reading means; A Lumpur means, by the control of the timing control signal from the main control unit, a digital stream of high data transmission rate obtained from the mixing means, through the high rate bus interface means,
The digital VTR or the high data transmission rate serial bus is configured to be transmittable.

According to this configuration, all digital streams including the AV / subcode digital stream and the control signal output at a low data transmission rate from the personal computer through the low-rate bus interface means are converted into the video digital stream. And audio digital streams, of which the video digital stream is extracted at full speed multiple times for each frame, and the audio digital stream is also divided and extracted according to the number of extractions. By connecting and continuing, the data is converted into the form of a digital stream having a high data transmission rate, and then transmitted to the digital VTR used for recording through the high-rate bus interface means.

According to a twelfth aspect of the present invention, there is provided an editing system using the bus converter, wherein the editing system is connected to the high-rate bus interface means according to any one of the first to fifth aspects and the seventh to eleventh aspects. In order to control the operation of the digital VTR used for the reproduction of the digital stream, the video signal and the time code information taken into the personal computer through the bus converter from the digital VTR reproduced and activated by the operation of the user are also used. At the same time, a control signal generated by execution of the software means of the personal computer is added to the main control means via the low-rate bus interface means, and based on the control signal, the high-rate bus is transmitted by the main control means. Interface means By operating controls the digital VTR through, with respect to the digital VTR, configured to start the reproduction operation of any portion of interest of the conversion and editing operation by the user of the magnetic tape loaded therein.

According to this configuration, the personal computer can execute the software means based on the video signal and the time code information from the digital VTR reproduced and activated by the operation of the user, based on the control signal generated by executing the software means. By the main control means, a reproduction operation of an arbitrary portion to be converted and edited by a user on a magnetic tape mounted inside the digital VTR is started, and from the digital VTR,
All digital streams including the AV / subcode digital stream and the control signal output at a high data transmission rate are separated into a video digital stream and an audio digital stream through the high-rate bus interface means. After converting and editing a digital stream having a low data transmission rate by extracting a DC component and an AC component in a video digital stream for an arbitrary number of frames from all frames at a low speed, the low-rate bus interface is used. Through the means,
Transmit to personal computer.

Hereinafter, an editing system using a bus converter according to an embodiment of the present invention will be specifically described with reference to the drawings. (Embodiment 1) An editing system using a bus converter having a bus conversion and editing function according to Embodiment 1 of the present invention will be described.

FIG. 1 is a block diagram showing a configuration of an editing system using a bus converter having a bus conversion and editing function according to the first embodiment. FIG. 2 shows the first embodiment.
It is explanatory drawing of each part signal in the editing system of FIG. The editing system according to the first embodiment basically transmits digital data between devices having serial buses of different transmission systems depending on the data transmission rate and protocol or signal format, for example, audio and video data to a magnetic tape as a recording medium. When a signal is transmitted through a serial bus between a digital VTR (abbreviated as DVC) and a personal computer (abbreviated as a personal computer) for recording and reproducing information (including a camera integrated type) and a personal computer (abbreviated as a personal computer), The configuration is such that conversion and editing can be performed by the bus converter in accordance with the transmission system of each serial bus.

In FIG. 1, (10) is a digital VTR
And an AV / subcode digital stream composed of a video digital stream (V digital stream), an audio digital stream (A digital stream), and a subcode digital stream signal such as a time code, a command for controlling the device, and a status of the device. Control signal (CS1) such as status signal shown
Are input / output through a bus interface means (BI0) capable of inputting / outputting to / from the stream bus (SB1) at a high data transmission rate according to a predetermined method. Here, the digital VTR (10) is used for reproduction. (11) is a digital VTR similar to the digital VTR (10) used for reproduction, and converts all of the above digital streams (DS1) into high data according to a prescribed method similar to the bus interface means (BI0). Input / output is performed through bus interface means (BI00) capable of inputting / outputting to / from the stream bus (SB1) at the transmission rate.
Here, the digital VTR (11) is used for recording.

(12) is a digital VTR (10), (1)
Digital stream (DS) input / output in 1)
When the signal format and the like differ between 1) and the digital stream (DS2) input / output by the personal computer depending on the transmission method, the digital streams (DS1) and (DS2) are transmitted in the respective formats. A bus converter (13) converts the digital signal from the digital VTR (10) for reproduction to a PHY (BI101) and L (L) in the bus interface means (BI1).
INK (BI102) via isochronos (IS
O) A frame separated into an audio digital stream forming an audio signal portion, a video digital stream forming a video signal portion, and a subcode digital stream for each frame of the AV / subcode digital stream obtained in the continuous waveform state of O). The unit AVS separation means (14) thins out an arbitrary number of frames from the several frames for the video signal portion of the AV digital stream separated by the frame unit AVS separation means (13) and continuous in frame units. Extraction means (15) for taking out stores and stores video digital streams for an arbitrary number of frames thinned out by the thinning means (14), and all audio digital streams and subcode digital streams continuous in frame units. Memory, (16) is an arbitrary number written in the memory (15) When reading a video digital stream, a full audio digital stream, and a sub-code digital stream corresponding to a video signal for a frame and an audio signal for all frames, the video digital stream and the full audio digital stream are read out from the AV / sub-code. A low-speed reading means for converting into a low data transmission rate AV / subcode digital stream (DS2) having a format different from that of the digital stream (DS1) due to a difference in transmission method, and (17) from the low-speed reading means (16) The bus interface means (B) so that the obtained AV / subcode digital stream (DS2) can be input / output to / from the outside of the bus converter (12) via the bus interface means (BI2).
I1) Timing generation which is a main control means for generating a timing control signal for controlling the frame unit AVS separation means (13), the thinning means (14), the low speed reading means (16) and the bus interface means (BI2). A bus interface means (BI1), a frame unit AVS separation means (13), a thinning means (14), a memory (15), a low speed reading means (16), a bus interface means (BI2) and a timing generation controller (17) is provided in the bus converter (12).

(18) is a personal computer (abbreviated as a personal computer), (19) is a graphics board for outputting a video signal for image display from the personal computer (18) to the outside, and is installed in the personal computer (18). Provided,
It is connected to its internal bus. In addition, personal computer (1
8) has a basic configuration. The CPU (18b) and the memory (MEM) (18c) connected to the internal bus via the BRG (18a) and the internal bus via the HDD-IF (18d). A connected HDD (18e) is provided, and the same bus interface means (BI2) as the bus interface means (BI2) is provided via an internal bus.
3) and the bus interface (BI) in the bus converter (12) through the stream bus (SB2).
2) is connected. The personal computer (18) further includes software means (A) (S1) for controlling the entire editing system, and a digital VTR (1).
Software means (B) (S2) for creating an image to be synthesized on the image from (0) in the personal computer (18).

(20) is connected to the personal computer (18),
A personal computer display for displaying an image corresponding to a video signal from the graphics board (19). An analog VTR (21) is an analog VTR for recording and reproducing audio and video on a magnetic tape as a recording medium in an analog manner. It is used for recording analog audio and video signals input from the digital VTR (10) through the analog bus (A1). This analog VTR (21) is connected to a timing generation controller (1) in a bus converter (12).
The start and stop of recording are controlled by the timing control signal from 7) through the infrared (IR) light emitter (R1) and the light receiving section (J1). (22)
Is input from the personal computer (18) into the bus converter (12) through the stream bus (SB2) and the bus interface means (BI2), and has a format different from that of the AV / subcode digital stream (DS1) due to a difference in transmission system. A low data transmission rate AV / subcode digital stream (DS2) is stored in a memory (15).
(23) is a memory (1)
The AV / subcode digital stream (DS2) written in 5) is converted into an AV / subcode digital stream (D2) having a data transmission rate higher than the data transmission rate.
As S1), high-speed continuous reading means for continuously reading from the memory (15). These low-speed writing means (22) and high-speed continuous reading means (23) are also controlled by the timing control signal of the timing generation controller (17), and the bus converter (12)
It is provided within.

The operation of the editing system configured as described above will be described below with reference to signal waveform diagrams shown in FIGS. 2 and 3 by dividing the operation into a plurality of types of functions.
Function 1 includes a DC component (DC component: D) and an AC component (AC component: V) of an arbitrary one-frame video digital stream in data transmission from the digital VTR (10) for reproduction to the personal computer (18). The editing of the audio signal (A), which is a continuous audio digital stream of full size + full frame, and the subcode signal (S), which is a subcode digital stream, will be described.

Digital VTR connected to bus interface means (BI1) having a plurality of bus input terminals
In order to control the operation of (10), the information such as the video signal and the time code taken into the personal computer (18) from the digital VTR (10) reproduced and activated by the operator through the remote control operation or the personal computer operation is used. The control signal (CS2) generated by the execution of the software means (A) (S1) of the personal computer (18) is transmitted from the bus interface means (BI3) via the stream bus (SB2) and the bus interface means (BI2). In addition to the timing generation controller (17), this timing generation controller (17)
Control signal (C for controlling TR (10)
S1) and the bus interface means (BI1)
, The digital VTR (10) is operated and controlled to start an operation of reproducing an arbitrary portion of the magnetic tape mounted in the digital VTR (10).

By this reproduction, the digital VTR (10)
, An AV / subcode digital stream composed of a video digital stream, an audio digital stream, and a subcode (time code etc.) digital stream, and a control signal (CS1) such as a command for controlling the device and a status signal indicating the status of the device. And outputs all digital streams (DS1) having a high data transmission rate to the stream bus (SB1) by a predetermined method.

This digital stream (DS1) is transmitted to the PHY (BI1) in the bus interface means (BI1).
01) and the LINK (BI102), an AV / subcode digital stream obtained in the isochronous (ISO) continuous waveform state as shown in FIG. As shown in FIG. 2B, the AV / subcode digital stream is input to the audio / digital stream and the video signal section by the frame / unit AVS separation means (13). Into a video digital stream and a sub-code digital stream.

From the continuous video digital stream in the separated AV / sub-code digital stream, several frames (here, 7 frames, but the personal computer side) as shown in FIG. Of the DC component (for example, D1) and the AC component (for example, V1) of one frame every other interval (within a range equal to or less than the minimum number of frames determined by the maximum transmission data amount at the data transmission rate and the maximum storage capacity of the memory (15)). The video digital stream for one frame (for example, D1 and V1
…) And all continuous audio signals (A1, A2, A
3) and the subcodes (S1, S2, S3...) Are successively stored in the memory (15).

While storing in the memory (15), all continuous audio signals (A1, A2, A3...) And sub-codes (S1, S2, S3...) Together with DC components and AC components are stored from the memory (15). Then, as shown in FIG. 2D, the low-speed reading means (16) sequentially converts the digital stream (DS1) into an AV / subcode digital stream (DS2) having a lower data transmission rate by a transmission method having a format different from that of the digital stream (DS1). Then, the signal is output to the outside of the bus converter (12) through the bus interface means (BI2). The use status of the memory (15) in this case is as shown in FIG.

An audio signal (A1, A2, A3) continuous with a thinned DC component (still image for small screen) and an AC component (full image) from the digital VTR (10) output from the bus converter (12). ) And an AV / subcode digital stream (DS2) composed of subcodes (S1, S2, S3,...) Such as a time code, and a stream bus (SB2) and a bus interface means (BI3)
To the personal computer (18) through the internal bus, for example, through the HDD-IF (18d).
e).

Function 2 is a digital VTR for reproduction.
(10) Only DC component (D) (excluding AC component (V)) of full-frame video digital stream in data transmission from personal computer (18) to full-frame continuous audio signal (A) and Editing of the subcode signal (S), which is a subcode digital stream, will be described.

Digital VTR connected to bus interface means (BI1) having a plurality of bus input terminals
In order to control the operation of (10), the information such as the video signal and the time code taken into the personal computer (18) from the digital VTR (10) reproduced and activated by the operator through the remote control operation or the personal computer operation is used. The control signal (CS2) generated by the execution of the software means (A) (S1) of the personal computer (18) is transmitted to the timing generation controller (1) via the stream bus (SB2) and the bus interface means (BI2).
7) In addition to the timing generation controller (17)
Is converted into a control signal (CS1) for controlling the digital VTR (10), and is operated and controlled via the bus interface means (BI1) to be mounted in the digital VTR (10). Activate the playback operation of any part of the magnetic tape.

By this reproduction, the digital VTR (10)
, An AV / subcode digital stream composed of a video digital stream, an audio digital stream, and a subcode (time code etc.) digital stream, and a control signal (CS1) such as a command for controlling the device and a status signal indicating the status of the device. And outputs all digital streams (DS1) having a high data transmission rate to the stream bus (SB1) by a predetermined method.

This digital stream (DS1) is transmitted to the PHY (BI1) in the bus interface means (BI1).
01) and the LINK (BI102), an AV / subcode digital stream obtained from the isochronous (ISO) in a continuous waveform state as shown in FIG. As shown in FIG. 2B, the AV / subcode digital stream is input to the audio / video digital stream and the subcode digital stream by the frame unit AVS separation means (13). And separated into

As shown in FIG. 2F, from the continuous video digital stream in the separated AV / subcode digital stream, as shown in FIG. Only all DC components (D), all audio signals (A) and all subcodes (S) are selected and thinned, and the thinned DC components (D), audio signals (A) and subcodes (S) are Memory (1
5) is stored continuously.

While being stored in the memory (15), all the continuous DC components (D1, D2,
D3...) And audio signals (A1, A2, A3...) And sub-codes (S1, S2, S3...) Are sequentially read by the low-speed reading means (16) as shown in FIG. DS1) is converted into an AV / subcode digital stream (DS2) having a lower data transmission rate by a transmission system having a format different from that of the DS1), and is output to the outside of the bus converter (12) through the bus interface means (BI2). The use status of the memory (15) in this case is as shown in FIG.

All continuous DC components (D) from the digital VTR (10) output from the bus converter (12)
1, D2, D3 ...) and audio signals (A1, A2, A3)
…) And subcodes such as time code (S1, S2, S
3) are transmitted to the personal computer (1) via the stream bus (SB2) and the bus interface means (BI3).
8) and read from the internal bus, for example, HDD-IF
(18d) and stored in the HDD (18e).

Function 3 is a digital VTR for reproduction.
In the data transmission from (10) to the personal computer (18), the DC component (D) and the AC component (V) of the video digital stream for an arbitrary number of frames plus the subcode (the subcode digital stream for the same number of frames) A description will be given of editing of only the full size of S) (excluding the audio signal (A)).

Digital VTR connected to bus interface means (BI1) having a plurality of bus inputs
In order to control the operation of (10), the information such as the video signal and the time code taken into the personal computer (18) from the digital VTR (10) reproduced and activated by the operator through the remote control operation or the personal computer operation is used. The control signal (CS2) generated by the execution of the software means (A) (S1) of the personal computer (18) is transmitted to the timing generation controller (1) via the stream bus (SB2) and the bus interface means (BI2).
7) In addition to the timing generation controller (17)
Is converted into a control signal (CS1) for controlling the digital VTR (10), and is operated and controlled via the bus interface means (BI1) to be mounted in the digital VTR (10). Activate the playback operation of any part of the magnetic tape.

By this reproduction, the digital VTR (10)
, An AV / subcode digital stream composed of a video digital stream, an audio digital stream, and a subcode (time code etc.) digital stream, and a control signal (CS1) such as a command for controlling the device and a status signal indicating the status of the device. And outputs all digital streams (DS1) having a high data transmission rate to the stream bus (SB1) by a predetermined method.

This digital stream (DS1) is transmitted to the PHY (BI1) in the bus interface means (BI1).
01) and the LINK (BI102), an AV / subcode digital stream obtained in the isochronous (ISO) continuous waveform state as shown in FIG. The AV / subcode digital stream is input to the audio digital stream (A) and the video digital stream (D) by the frame unit as shown in FIG. And V) and a sub-code digital stream (S).

From the continuous video digital stream in the separated AV / subcode digital stream, as shown in FIG. 3C, an audio signal ( A) Except for A), several consecutive frames (within the range of the maximum number of frames determined by the maximum transmission data amount at the data transmission rate of the personal computer and the maximum storage capacity of the memory (15),
In FIG. 3, the DC component (D
1, D2, D8, D9 ...) and AC components (V1, V
, V8, V9,...) And sub-code digital streams (S1, S2, S8, S
9) are selected as blocks and thinned out, and the thinned-out video digital streams and sub-code digital streams for several frames are successively stored in the memory (15).

While being stored in the memory (15), from the memory (15), as shown in FIG. 3 (d), a video digital stream composed of a DC component (D) and an AC component (V) every several consecutive frames. And the sub-code digital stream (S) are sequentially converted into a V / sub-code digital stream (DS2) having a low data transmission rate by a low-speed reading means (16) using a transmission system having a format different from that of the digital stream (DS1). And the bus converter (1) through the bus interface means (BI2).
Output to 2) outside.

A video digital stream composed of DC components (D) and AC components (V) of several frames from a digital VTR (10) output from a bus converter (12) and a subcode digital stream (S) such as a time code. ) V / subcode digital stream (D
S2) to the personal computer (18) via the stream bus (SB2) and the bus interface means (BI3).
Into the internal bus and, for example, HDD-IF (18
The data is stored in the HDD (18e) through d).

Function 4 includes a digital VTR for reproduction.
D of the video digital stream for an arbitrary one frame in the data transmission from (10) to the personal computer (18)
To the digital VTR (11) for editing the full-size + full-frame continuous audio signal (A) and sub-code (S) of the C component (D) and the AC component (V), and recording the edited AV digital stream Will be described.

Digital VTR connected to bus interface means (BI1) having a plurality of bus input terminals
In addition to controlling the operation of (10), the digital VT
In order to perform time shearing with the AV / sub-code digital stream (DS1) reproduced from the R (10), the digital VTR (10) reproduced and activated by the operator is taken into the personal computer (18) by remote control operation or personal computer operation. The control signal (CS2) generated by the execution of the software means (A) (S1) of the personal computer (18) is transmitted to the stream bus (SB2) and the bus interface based on the obtained video signal and information such as the time code. In addition to the timing generation controller (17) via the means (BI2), under the management of the software means (A) and (S1), the timing generation controller (17) controls each means connected thereto, and Control signal applied to the generation controller (17) The (CS2), the digital VTR for reproduction at the timing generator controller (17)
(10) and a control signal (CS1) for controlling the digital VTR (11) for recording, and the digital VTR (10) for reproduction and the digital VTR (1) for recording are converted via the bus interface means (BI1).
1) is operated and controlled to instruct the digital VTR (10) for reproduction and the digital VTR (11) for recording to start each operation.

The digital VTR thus reproduced and activated
From (10), an AV / subcode digital stream composed of a video digital stream, an audio digital stream, and a subcode (time code, etc.) digital stream, and a control signal such as a command for controlling the device and a status signal indicating the status of the device ( CS
All digital streams (DS1) having a high data transmission rate, including 1), are output to the stream bus (SB1) by a predetermined method.

This digital stream (DS1) is transmitted to the PHY (BI1) in the bus interface (BI1).
01) and the LINK (BI102), an AV / subcode digital stream obtained from the isochronous (ISO) in a continuous waveform state as shown in FIG. As shown in FIG. 2B, the AV / subcode digital stream is input to the audio / video digital stream and the subcode digital stream by the frame unit AVS separation means (13). And separated into

From the continuous video digital stream in the separated AV / subcode digital stream, several frames (seven frames in this case, but the personal computer side) as shown in FIG. Of the DC component (for example, D1) and the AC component (for example, V1) of one frame every other interval (within a range equal to or less than the minimum number of frames determined by the maximum transmission data amount at the data transmission rate and the maximum storage capacity of the memory (15)). All the audio signals (A1, A2, A3,...) And subcodes (S1,...
1, S2, S3...) Are continuously stored in the memory (15).

While storing in the memory (15), all continuous audio signals (A1, A2, A3...) And sub-codes (S1, S2, S3...) Together with DC components and AC components are stored from the memory (15). Then, as shown in FIG. 2D, the low-speed reading means (16) sequentially converts the digital stream (DS1) into an AV / subcode digital stream (DS2) having a lower data transmission rate by a transmission method having a format different from that of the digital stream (DS1). Then, the data is output to the outside of the bus converter (12) through the bus interface means (BI2). The use status of the memory (15) in this case is as shown in FIG.

An audio signal (A1, A2, A3) continuous with a thinned DC component (still image for small screen) and an AC component (full image) from the digital VTR (10) output from the bus converter (12). ..) And a subcode (S1, S2, S3...) Such as a time code, a stream bus (SB2) and a bus interface means (BI3).
To the personal computer (18) through the internal bus, for example, through the HDD-IF (18d).
e).

Next, the software means (B) and (S2) in the personal computer (18) are executed, and keys are operated on the personal computer (18), whereby the software means (B) is operated.
Under the management of (S2), for example, the HDD built in the personal computer
After editing the video signal captured in (18e) by processing or inserting a title, the video signal is converted into a low data transmission rate AV / subcode digital stream (DS2) and the personal computer ( 18) from the bus interface means (BI3) to the stream bus (SB2) and the bus interface means (BI
Via 2), the data is supplied to the low-speed writing means (22), and is stored in the memory (15) by a procedure reverse to that of the low-speed reading means (16).

The video signal stored in the memory (15) is converted into an AV / subcode digital stream having a high data transmission rate by the high-speed continuous reading means (23), and the LINK in the bus interface means (BI1) is converted.
(BI102) and PHY (BI103) through the stream bus (SB1) and the bus interface means (BI00) to record the digital VTR (1).
1) Recording is performed on an arbitrary portion of the magnetic tape mounted inside.

Function 5 includes a digital VTR for reproduction.
Only the DC component (D) (excluding the AC component (V)) of the full-frame video digital stream on the personal computer display (20) in the data transmission from (10) to the personal computer (18) + full frame Digital VTR for editing a continuous audio signal (A) and a subcode signal (S), which is a subcode digital stream, and recording the edited AV digital stream
Re-recording to (11) will be described.

Digital VTR connected to bus interface means (BI1) having a plurality of bus input terminals
In order to control the operation of (10), the information such as the video signal and the time code taken into the personal computer (18) from the digital VTR (10) reproduced and activated by the operator through the remote control operation or the personal computer operation is used. The control signal (CS2) generated by the execution of the software means (A) (S1) of the personal computer (18) is transmitted to the timing generation controller (1) via the stream bus (SB2) and the bus interface means (BI2).
7) In addition to the timing generation controller (17)
, A control signal (CS1) for controlling the digital VTR (10) for reproduction and the digital VTR (11) for recording, and the digital VTR (10) for reproduction via the bus interface means (BI1).
And operating and controlling the recording digital VTR (11), and instructing the start-up operations of the reproducing digital VTR (10) and the recording digital VTR (11), and the reproducing digital VTR (10). Plays any part of the magnetic tape mounted inside.

The digital VTR thus reproduced and activated
From (10), an AV / subcode digital stream composed of a video digital stream, an audio digital stream, and a subcode (time code, etc.) digital stream, and a control signal such as a command for controlling the device and a status signal indicating the status of the device ( CS
All digital streams (DS1) having a high data transmission rate, including 1), are output to the stream bus (SB1) by a predetermined method.

This digital stream (DS1) is transmitted to the PHY (BI1) in the bus interface (BI1).
01) and the LINK (BI102), an AV / subcode digital stream obtained from the isochronous (ISO) in a continuous waveform state as shown in FIG. As shown in FIG. 2B, the AV / subcode digital stream is input to the audio / video digital stream and the subcode digital stream by the frame unit AVS separation means (13). And separated into

As shown in FIG. 2F, from the continuous video digital stream in the separated AV / sub-code digital stream, as shown in FIG. Only the entire DC component (D) and the entire audio signal (A) are selected and thinned out. To memorize.

While being stored in the memory (15), all the continuous DC components (D1, D2,
D3...) And audio signals (A1, A2, A3...) And sub-codes (S1, S2, S3...) Are sequentially read by the low-speed reading means (16) as shown in FIG. DS1) is converted into an AV / subcode digital stream (DS2) having a lower data transmission rate by a transmission system having a format different from that of the DS1), and is output to the outside of the bus converter (12) through the bus interface means (BI2). The use status of the memory (15) in this case is as shown in FIG.

All continuous DC components (D) from the digital VTR (10) output from the bus converter (12)
1, D2, D3 ...) and audio signals (A1, A2, A3)
…) And subcodes such as time code (S1, S2, S
3) are transmitted to the personal computer (1) via the stream bus (SB2) and the bus interface means (BI3).
8) and read from the internal bus, for example, HDD-IF
(18d), and temporarily stores the data on the AV / subcode digital stream (DS).
Based on 2), an image is displayed on a display (20) for a personal computer used as a monitor TV via a graphics board (19) connected to an internal bus, and while viewing the display screen, the image on the personal computer (18) is displayed. The software means (B) and (S2) are executed, the editing point is determined by operating the keys on the personal computer (18), and the keys are further operated to control the software means (B) and (S2). Then, after editing the video signal temporarily stored in the HDD (18e) by processing or inserting a title, the video signal is stored again in another area of the HDD (18e) or in the same area. I do.

The video signal is converted as a low data transmission rate AV / subcode digital stream (DS2) from the bus interface means (BI3) in the personal computer (18) to the stream bus (SB2) and the bus interface means (BI2). And supplies it to the low-speed writing means (22), and stores it in the memory (15) by a procedure reverse to that of the low-speed reading means (16).

The video signal stored in the memory (15) is converted into an AV / subcode digital stream having a high data transmission rate by the high-speed continuous reading means (23), and the LINK in the bus interface means (BI1) is converted.
(BI102) and PHY (BI103) through the stream bus (SB1) and the bus interface means (BI00) to record the digital VTR (1).
1) Recording is performed on an arbitrary portion of the magnetic tape mounted inside.

The bus converter (12) is an infrared signal transmitting means for transmitting an infrared signal for remote control operation based on a control signal (CS1) from the timing generation controller (17) to the outside thereof. An infrared (IR) light emitter (R1) can be connected and its infrared (I)
R) Remote control of an externally arranged analog VTR (21) is possible by an infrared signal from the light emitter (R1) through an infrared light receiving section (J1) attached to the outside of the housing. It can also be configured as follows.

The digital VTR (1) using the above configuration
The editing dubbing operation from 0) to the analog VTR (21) will be described. Here, the reproduction digital V
An analog video and audio signal output terminal of the TR (10) and a video and audio signal input terminal of the recording analog VTR (21) are connected to an analog bus cable (A
It is assumed that they are connected by 1).

First, in order to control the operation of the digital VTR (10) connected to the bus interface means (BI1) having a plurality of bus input terminals, the reproduction was started by an operator's remote control operation or personal computer operation. The software means (A) (S) of the personal computer (18) is based on information such as a video signal and a time code taken from the digital VTR (10) into the personal computer (18).
Control signal (CS) issued by execution of 1)
2) is added to the timing generation controller (17) via the stream bus (SB2) and the bus interface means (BI2), and the timing generation controller (17) controls the digital VTR (10) for reproduction. Convert to control signal (CS1),
The digital VTR (10) for reproduction is operated and controlled via the bus interface means (BI1), and the start operation of the digital VTR (10) for reproduction is commanded and operated. Plays any part of the magnetic tape attached to the.

Thus, the digital VTR (10)
The AV / subcode digital stream (DS1) reproduced from the above is converted into a stream bus (SB1), a bus converter (12) and a stream bus (SB2) using the above functions (functions 1 to 5). From the personal computer display (20) through the personal computer (18)
While monitoring on the above, at the start of the dubbing portion for this AV / subcode digital stream (DS1), at the same time as the start, the input operation (for example, key operation) to the personal computer (18) is performed to stream from the personal computer (18). In response to a dubbing start instruction input to the timing generation controller (17) through the bus interface (BI2) in the bus for bus (SB2) and the bus converter (12), the control signal output from the timing generation controller (17) CS1), an infrared signal (RS1) is transmitted from the infrared (IR) light emitter (R1), and the light receiving unit (J) is transmitted by the infrared signal (RS1).
Through 1), the analog VTR (21) is remote-controlled to start a recording operation, thereby starting dubbing from the digital VTR (10) to the analog VTR (21) through the analog bus cable (A1).

Thereafter, while continuously monitoring on the personal computer display (20), at the end point of the dubbing portion for the AV / sub-code digital stream (DS1), the input operation to the personal computer (18) is performed at the same time. In the same manner as described above, the timing generation controller (1) operates in response to the dubbing stop instruction input to the timing generation controller (17).
7) remote control of the analog VTR (21) based on the control signal (CS1) output from the digital VTR (1).
Stop dubbing from 0) to the analog VTR (21).

In addition, the HDD (1) in the personal computer (18) edited using the above-mentioned functions (functions 1 to 5).
The AV / subcode digital stream (DS2) stored in 8e) is transferred from the stream bus (SB2) and the bus converter (12) and the stream bus (SB1) through the digital VTR (10) for recording. In the same manner as described above, it can be recorded on the analog VTR (21).

As described above, the digital VTR for reproduction
Editing dubbing using analog video and audio signals can be performed between (10) and the analog VTR (21).
Further, using each of the above functions (function 1 to function 5),
From the digital VTR for reproduction (10), the bus converter (1)
2) The AV / subcode digital stream (DS2) taken into the personal computer (18) via the stream bus (SB2) is monitored on the personal computer display (20) through the personal computer (18). ,
By editing an arbitrary part of the AV / subcode digital stream (DS2) using image signals such as titles and characters created by software means (B) (S2) in the personal computer (18) Generates a new AV / subcode digital stream (DS2) in a state where the AV / subcode digital stream (DS2) from the digital VTR (10) for reproduction and the image signal created in the personal computer (18) are combined. Then, this new AV / subcode digital stream (DS2) is
It is also possible to record from the personal computer (18) to the digital VTR (11) set for recording via the stream bus (SB2) and the bus converter (12). (Embodiment 2) An editing system using a bus converter having a bus conversion function according to Embodiment 2 of the present invention will be described.

FIG. 4 is a block diagram showing a configuration of an editing system using a bus converter having a bus conversion function according to the second embodiment. FIG. 5 is an explanatory diagram of each section signal in the editing system using the bus converter according to the second embodiment. The editing system according to the second embodiment basically transmits digital data between devices having serial buses having different transmission systems according to a data transmission rate and a protocol or a signal form, for example, audio and video data to a magnetic tape as a recording medium. Digital V (including camera integrated type)
When signals are transmitted through a serial bus between a TR (abbreviated as DVC) and a personal computer (abbreviated as a personal computer), the signals are made to correspond to the transmission system of each serial bus by a bus converter. It is configured so that it can be converted.

In FIG. 4, reference numeral 31 denotes a personal computer, which is a video digital stream (V digital stream), a continuous audio digital stream (A digital stream), and a device generated internally in the hard disk (HDD) or the like. Bus interface means (I / O) capable of inputting / outputting all digital streams (DS2) including control signals (CS2) such as commands for controlling commands and the like to / from the stream bus (SB2) at a low data transmission rate by a predetermined method. Input / output through BI3). In the personal computer (31), control signals (C) such as commands for operating and controlling the bus converter and the digital VTR constituting the editing system are provided.
Software means (S3) for generating S2) is provided.

(32) is a bus converter connected to the personal computer (31) by the stream bus (SB2).
When the digital stream (DS1) input / output in the digital VTR and the digital stream (DS2) input / output in the personal computer (31) have different signal formats or the like depending on the transmission method, these digital streams are used. (DS1), (DS2),
Conversion is performed so that the format matches each transmission method.

(BI2) operates in the same manner as the bus interface means (BI3). The bus interface means (BI3) and the stream bus (SB2)
Bus interface means connected through
(G1) is at every other frame of a video digital stream forming a continuous video signal (V) portion in a digital stream (DS2) having a low data transmission rate obtained from the personal computer (31) via the bus interface means (BI2). Memory gate writing means for gating the data of the video digital stream (V1, V3, V5,...) For one frame and writing the data into the memory, and (M1) means the video digital data for one frame from the memory gate writing means (G1). A memory for storing data of the streams (V1, V3, V5,...); (G2) a digital stream (DS2) having a low data transmission rate obtained from the personal computer (31) via the bus interface means (BI2)
Of the video digital stream forming the continuous video signal (V) portion in the memory gate writing means (G
A memory gate writing unit that gates and writes data of one frame of the video digital stream (V2, V4, V6,...) Except for the target 1) to the memory;
2) is a video digital stream (V2, V4, V6, V6,...) For one frame from the memory gate writing means (G2).
..), A memory (33) forms a continuous audio signal (A) portion in a digital stream (DS2) of a low data transmission rate obtained from the personal computer (31) via the bus interface means (BI2). Audio division / compression means for dividing (in this case, dividing into 5) the audio digital stream, and (R1) and (R2) are provided from the memories (M1) and (M2), respectively, to store the stored video digital stream for one frame. V1, V3, V5,
…) And video digital streams (V2, V4, V
..) Several times at a high data transmission rate for each data of the video digital stream (five times in this case).
A memory reading means for adding the data of each audio digital stream divided and compressed by the audio division compression means (33) to the data of the video digital stream of each frame for each read number and outputting the data at the same time as reading;
4) mixing means (MIX) for mixing digital streams composed of video digital stream data and audio digital stream data of a high data transmission rate obtained from the memory reading means (R1) and (R2);
(BI1) is a bus interface means for outputting a digital stream (DS1) having a high data transmission rate obtained from the MIX (34) to the outside of the bus converter (32), and (35) is a clock extractor from the digital stream (DS2). Bus interface means (BI2), (BI2) based on the clock obtained through means (36).
1) is generated, and the write clock generation means (37) and the read clock generation means (38) are controlled to control the memory gate writing means (G1), (G
2) a main controller which is a main control means for generating a timing control signal and a clock signal for controlling the memories (M1) and (M2), the memory reading means (R1) and (R2). Interface means (BI2), (BI
1), memory gate writing means (G1), (G2),
Memory (M1), (M2), voice division compression means (3
3), memory reading means (R1), (R2), MIX
(34), clock extraction means (36), write clock generation means (37), read clock generation means (3)
8) and the main controller (35) are provided in the bus converter (32).

(39) connects the stream bus (S1) to the bus interface means (BI1) of the bus converter (32).
Bus interface means (BI0) via B1)
Is a connected digital VTR (DVC). The operation of the editing system configured as described above will be described below with reference to a signal waveform diagram shown in FIG.

First, the bus interface means (BI
1) to the digital V whose bus interface means (BI0) is connected via a stream bus (SB1).
In order to control the operation of the TR (DVC) (39), a control signal (CS2) generated by executing the software means (S3) of the personal computer (31) is transmitted from the bus interface means (BI3) to the stream bus (SB2).
In addition to the main controller (35) via the bus interface means (BI2), the main controller (35) converts the signal into a control signal (CS1) for controlling the digital VTR (39). Digital VTR (3
9) to operate and control its digital VTR (3
The recording operation of 9) is started.

By executing the software means (S3) from the personal computer (31), for example, a video digital stream, a continuous audio digital stream, and a device generated internally in a built-in hard disk (HDD) or the like. All digital streams (DS2) including control signals (CS2) such as commands for controlling
Through 3), the data is output to the stream bus (SB2) at a low data transmission rate according to a predetermined method.

On the other hand, the bus interface means (BI
3) includes a bus interface (BI2) which operates in the same manner as the bus interface (BI3).
Are connected through a stream bus (SB2), and the memory gate writing means (G1) connected to the bus interface means (BI2) is obtained from the personal computer (31) via the bus interface means (BI2). As shown in FIG. 5 (b), every other frame of a continuous video digital stream in a digital stream (DS2) having a low data transmission rate as shown in FIG.
As shown in the figure, the data of the video digital stream (V1, V3, V5,...) For one frame is gated and written into the memory (M1), whereby the memory (M1)
Are video digital streams (V1, V3, V5, V5,...) For one frame from the memory gate writing means (G1).
…) Is stored.

The bus interface means (BI
2) The memory gate writing means (G
2) is a digital stream (DS2) having a low data transmission rate as shown in FIG. 5A obtained from the personal computer (31) via the bus interface means (BI2).
5D, the memory gate writing means (G
The data of the video digital stream (V2, V4, V6,...) For one frame other than the target of 1) is gated and written to the memory (M2). Means one frame of video digital stream (V2, V4,
V6,...) Are stored.

At the same time, the bus interface means (BI
The audio division / compression means (33) connected to 2) provides a continuous audio signal (A) in a low data transmission rate digital stream (DS2) obtained from the personal computer (31) via the bus interface means (BI2).
The sub-code (S), which is a part of the audio digital stream and the sub-code digital stream, is divided (here, divided into five) and compressed.

Next, the memory reading means (R1), (R
2) is a one-frame video digital stream (V1, V2) stored from the memories (M1), (M2).
, V5,...) And (V2, V4, V6,...) Several times at a high data transmission rate alternately for each video data as shown in FIG. 5C and FIG. At this time, the audio digital stream and the subcode data divided and compressed by the audio division and compression means (33) are added to the video digital stream data of each frame for each number of times of reading and output. I do.

As described above, the memory reading means (R
1) The data of the video digital stream of the high data transmission rate obtained from (R2) and the digital streams composed of the audio digital stream and the data of the sub-code digital stream are mixed by the MIX (34). The resulting digital stream (DS) having a high data transmission rate as shown in FIG.
1) through the bus interface means (BI1) and the stream bus (SB1).
Output to 2) outside.

As described above, a digital stream (DS) composed of a continuous audio digital stream, sub-code digital stream and video digital stream output from the bus converter (32) at a high data transmission rate.
1) is continuously recorded on an arbitrary portion of a magnetic tape running and driven in a digital VTR (39) connected to a bus converter (32) by a stream bus (SB1).

In each of the above embodiments, the bus interface means (BI0), (BI00) and (BI1) are, for example, 1394 interface means corresponding to the IEEE 1394 bus, and the bus interface means (BI2) and (BI3). ) Is, for example, USB
Can be considered as USB interface means corresponding to.

The bus interface means (BI
0), (BI00) and (BI1) are converted to IEEE139
1394 interface means corresponding to four buses,
Bus interface means (BI2) and (BI3)
To the RS232C corresponding to the RS232C serial bus.
It may be an interface means.

[0091]

As described above, according to the present invention, an AV / subcode digital stream and a control signal output from a digital VTR used for reproduction at a high data transmission rate through its high-rate bus interface means. And all digital streams including the video digital stream and the audio digital stream, and for each of the video digital streams, the DC and AC components in the video digital stream for an arbitrary number of frames are thinned out from all the frames. By extracting at a low speed, it can be converted and edited into the form of a digital stream having a low data transmission rate, and then transmitted to the personal computer through the low-rate bus interface means.

According to the present invention, all digital streams including the AV / subcode digital stream and the control signal output at a low data transmission rate from the personal computer through the low-rate bus interface means are converted to video signals. It separates into a digital stream and an audio digital stream, and of the video digital stream, extracts the full size multiple times at high speed for each frame, divides and extracts the audio digital stream according to the number of extractions, and extracts them By connecting and connecting each time, it is converted into the form of a digital stream having a high data transmission rate, and then transmitted to a digital VTR used for recording through high-rate bus interface means. It can be.

Therefore, devices having serial buses having different data transmission rates, protocols, and signal formats can communicate with each other by transmitting signals through the serial buses. Can be transmitted with the transmission signal edited.

[Brief description of the drawings]

FIG. 1 is a block diagram showing a configuration of an editing system using a bus converter having a bus conversion and editing function according to a first embodiment of the present invention;

FIG. 2 is an explanatory diagram of signals of each section in the editing system according to the first embodiment;

FIG. 3 is an explanatory diagram of signals of respective units in other functions in the editing system according to the first embodiment;

FIG. 4 is a block diagram showing a configuration of an editing system using a bus converter having a bus conversion function according to a second embodiment of the present invention;

FIG. 5 is an explanatory diagram of signals of respective units in an editing system using the bus converter according to the second embodiment;

[Explanation of symbols]

 Reference Signs List 10 digital VTR (DVC) 11 digital VTR 12 bus converter 13 frame unit AVS separation means 14 thinning means 15 memory 16 low speed reading means 17 timing generation controller 18 personal computer (personal computer) 19 graphics board 20 personal computer display 21 analog VTR 22 low speed Writing means 23 High-speed continuous reading means 31 Personal computer (PC) 32 Bus converter 33 Audio division and compression means 34 Mixing means (MIX) 35 Main controller 36 Clock extraction means 37 Write clock generation means 38 Read clock generation means 39 Digital VTR (DVC) ) BI1, BI2 Bus interface means G1, G2 Memory gate writing means M1, M2 Memory R1, R2 Mori reading means

──────────────────────────────────────────────────続 き Continued on the front page (51) Int.Cl. ⁷ Identification symbol FI Theme coat ゛ (Reference) H04N 5/92 G11B 27/02 A F term (Reference) 5B077 NN02 5C053 FA14 FA22 FA23 GA14 GB05 GB11 HA03 HA23 HA27 JA01 KA03 KA24 KA30 LA11 5D044 AB05 AB07 BC01 CC01 CC04 EF03 EF06 EF10 FG10 FG30 GK03 GK05 GK10 HL06 HL11 5D110 AA04 AA13 AA21 AA27 AA29 BB16 CA02 CA05 CA33 CA42 CB03 CK02 CK22 CK30

Claims (14)

[Claims] 1. All digital data including an AV / subcode digital stream including a video digital stream, an audio digital stream, and a subcode digital stream signal such as a time code, and a control signal for controlling a device. A digital VTR used for reproducing all the digital streams, and a digital VTR used for reproducing the all digital streams, through a high-rate bus interface means capable of inputting / outputting the streams at a high data transmission rate according to a predetermined method; A personal computer for inputting and outputting to the outside through low-rate bus interface means capable of inputting and outputting at a low data transmission rate according to a predetermined method, and the digital VTR and the personal computer For input and output of digital streams to the outside, it has serial buses with different transmission methods depending on the transmission rate and protocol and signal form,
When the digital streams have different formats due to the difference in the transmission method, when transmitting the digital streams through the respective serial buses between the digital VTR and the personal computer,
An editing system using a bus converter provided to convert and edit the format of the digital stream in correspondence with the transmission system of a serial bus, wherein the bus converter is provided with the high rate data from the digital VTR. The AV /
A frame unit AVS separation unit for separating the sub-code digital stream into the audio digital stream forming an audio signal unit and the video digital stream forming a video signal unit and the sub-code digital stream in frame units; With respect to the video digital stream separated by the unit AVS separation unit and continuous in a frame unit, a thinning unit for thinning out the video digital stream for an arbitrary number of frames from the several frames, and thinning out by the thinning unit A video digital stream for an arbitrary number of frames, a memory for storing and storing all the audio digital streams and sub-code digital streams that are continuous in frame units, and an arbitrary number of frames stored in the memory. Video digital data for frame Stream and the in reading and audio digital stream and subcode digital stream of all frames, their video digital stream and all audio digital stream, the digital V
A low-speed reading means for converting into an AV / sub-code digital stream having a low data transmission rate having a format different from that of the AV / sub-code digital stream from the TR due to a difference in transmission system; The high-rate bus interface means, the frame-unit AVS separation means, so that an AV / subcode digital stream at a data transmission rate can be input / output to / from the personal computer via the low-rate bus interface means. An editing system using a bus converter comprising a thinning unit, a low-speed reading unit, and a main control unit for generating a timing control signal for controlling the low-rate bus interface unit. 2. A thinning means comprising:
The DC component for small screen display and the AC component for full screen display of the video digital stream for an arbitrary one frame are provided every several frames of the video digital stream separated by the separating means and continuous in frame units. 2. The editing system using the bus converter according to claim 1, wherein the editing system is configured to thin out and extract the full size. 3. The frame unit AVS according to claim 1, wherein
2. The video digital stream separated by a separating unit and continuous in a frame unit, wherein only a DC component for small screen display of the video digital stream of all frames is thinned out and taken out. Editing system using a bus converter. 4. All digital data including an AV / subcode digital stream composed of a subcode digital stream signal such as a video digital stream, an audio digital stream, and a time code, and a control signal for controlling a device. A digital VTR used for reproduction of all the digital streams, and a digital VTR used for reproduction of all the digital streams; A personal computer for inputting and outputting to the outside through low-rate bus interface means capable of inputting and outputting data at a low data transmission rate according to a predetermined method, wherein the digital VTR and the personal computer For input and output of digital streams to the outside, it has serial buses with different transmission methods depending on the transmission rate and protocol and signal form,
When the digital streams have different formats due to the difference in the transmission method, when transmitting the digital streams through the respective serial buses between the digital VTR and the personal computer,
An editing system using a bus converter provided to convert and edit the format of the digital stream in correspondence with the transmission system of a serial bus, wherein the bus converter is provided with the high rate data from the digital VTR. The AV /
Frame unit AVS separating means for separating the sub-code digital stream into the audio digital stream forming an audio signal unit and the video digital stream forming the video signal unit and the sub-code digital stream in frame units; With respect to the video digital stream separated by the unit AVS separation unit and continuous in a frame unit, a thinning unit for thinning out the video digital stream for an arbitrary number of frames from the several frames, and thinning out by the thinning unit A memory that stores and stores only the video digital streams for an arbitrary number of frames, and reads out the video digital streams for the arbitrary number of frames stored in the memory. From the digital VTR A low-speed reading means for converting into a low-data-rate V / sub-code digital stream having a format different from that of the V / sub-code digital stream due to a difference in transmission method; The high-rate bus interface means, the frame-based AVS separation means, the thinning means, so that the V / subcode digital stream can be input / output to / from the personal computer via the low-rate bus interface means. An editing system using a bus converter, comprising: a low-speed reading unit; and a main control unit that generates a timing control signal for controlling the low-rate bus interface unit. 5. The frame unit AVS according to claim 1, wherein
For the video digital stream separated by the separation means and continuous in frame units, for every several frames, a DC component for displaying a small screen and a DC component for displaying a full screen of the video digital stream for an arbitrary number of continuous frames. 5. An editing system using a bus converter according to claim 4, wherein the full size of the AC component is thinned out as a block and taken out. 6. All digital data including an AV / subcode digital stream including a video digital stream, an audio digital stream, and a subcode digital stream signal such as a time code, and a control signal for controlling a device. A digital VTR used for recording all the digital streams, and a digital VTR used for recording all the digital streams, through a high-rate bus interface means capable of inputting and outputting the streams at a high data transmission rate according to a predetermined method; A personal computer for inputting and outputting to the outside through low-rate bus interface means capable of inputting and outputting at a low data transmission rate according to a predetermined method, and the digital VTR and the personal computer For input and output of digital streams to the outside, it has serial buses with different transmission methods depending on the transmission rate and protocol and signal form,
When the digital streams have different formats due to the difference in the transmission method, when transmitting the digital streams through the respective serial buses between the digital VTR and the personal computer,
An editing system using a bus converter provided for converting and editing the format of the digital stream in correspondence with the transmission system of a serial bus, wherein the bus converter includes the low-rate Every other frame of the continuous video digital stream in the low data rate digital stream obtained via the bus interface means,
A first memory gate writing unit that gates the data of the one-frame video digital stream and writes the data to the memory; and a first memory gate that stores the one-frame video digital stream data from the first memory gate writing unit. Of the continuous digital video stream of the low data transmission rate digital stream obtained from the personal computer via the low rate bus interface means, except for the first memory gate writing means. A second memory gate writing means for gating the data of the video digital stream for one frame and writing the data to the memory; and a second memory for storing the data of the video digital stream for one frame from the second memory gate writing means. And the memory of Audio division and compression means for dividing the continuous audio digital stream in a low data transmission rate digital stream obtained from a personal computer via the low rate bus interface means into arbitrary numbers and compressing the divided digital streams; and the first memory From the stored data of the video digital stream for one frame, the data of each audio digital stream divided and compressed by the audio division compression means at the same time as reading out the data of the video digital stream several times at a high data transmission rate. And a first memory readout unit for adding and outputting the data of the video digital stream of each frame for each readout number, and storing the stored data of the video digital stream for one frame from the second memory. For each digital video stream data At the same time as reading the data several times at a high data transmission rate, the data of each audio digital stream divided and compressed by the audio division compression means is added to the data of the video digital stream of each frame for each of the read times and output. A memory reading means, and a mixing means for mixing digital streams each consisting of video digital stream data and audio digital stream data at a high data transmission rate obtained from each of the first and second memory reading means; A timing controller for controlling the low-rate bus interface means and the high-rate bus interface means based on a clock obtained from the low-data-rate digital stream from the personal computer through the clock extracting means; While generating a troll signal, controlling the write clock generation means and the read clock generation means,
Main control means for generating a timing control signal and a clock signal for controlling the first and second memory gate writing means, the first and second memories, and the first and second memory reading means, By controlling the timing control signal from the main control means, a digital stream of a high data transmission rate obtained from the mixing means, through the high-rate bus interface means,
An editing system using a bus converter configured to be able to transmit to the digital VTR or the serial bus having a high data transmission rate. 7. All digital data including an AV / subcode digital stream composed of subcode digital stream signals such as a video digital stream, an audio digital stream, and a time code, and a control signal for controlling a device. A first digital VTR used for reproduction of all the digital streams, inputting / outputting the streams through a high-rate bus interface means capable of inputting / outputting the streams at a high data transmission rate in a predetermined manner; And a second digital VTR used for recording all the digital streams by inputting / outputting the digital streams to / from the outside through high-rate bus interface means capable of inputting / outputting at a high data transmission rate according to a predetermined method. All of the above A personal computer for externally inputting / outputting a digital stream through a low-rate bus interface means capable of inputting / outputting a digital stream at a low data transmission rate according to a predetermined method, wherein the first and second digital VTRs and the personal computer include: For input / output of each digital stream to the outside, there are serial buses with different transmission systems depending on the transmission rate, protocol and signal form, and these digital streams have different formats due to the difference of the transmission system In this case, when transmitting the digital stream between the first and second digital VTRs and the personal computer through the respective serial buses, the formats of the digital streams are made to correspond to each other according to the transmission system of the serial bus. Strange And an editing system using a bus converter provided for editing, wherein said bus / converter is provided with said AV / subcode digital stream obtained from said first digital VTR via said high-rate bus interface means. A frame unit AVS separation unit that separates the audio digital stream forming an audio signal unit, the video digital stream and the subcode digital stream forming a video signal unit in frame units, and the frame unit AVS separation unit With respect to the video digital stream separated in units of frames and decimating the video digital stream for an arbitrary number of frames from among several frames, an arbitrary number decimated by the decimation unit The video digital stream for the frame A memory for storing and storing all the audio digital streams and sub-code digital streams that are continuous in frame units; a video digital stream for the arbitrary number of frames stored in the memory; When the audio digital stream and the sub-code digital stream are read, the format of the video digital stream and the entire audio digital stream is different from that of the AV / sub-code digital stream from the first digital VTR due to the difference in transmission system. Low-speed reading means for converting into a low data transmission rate AV / subcode digital stream; and the first digital V through the low-rate bus interface means from the personal computer.
A low-speed writing unit that writes an AV / sub-code digital stream having a low data transmission rate into the memory, the format of which differs from the AV / sub-code digital stream from the TR due to a difference in transmission method, and the low-speed writing unit writes the AV / sub-code digital stream to the memory. High-speed continuous reading means for continuously reading from the memory the AV / subcode digital stream having the lower data transmission rate as an AV / subcode digital stream having a data transmission rate higher than the data transmission rate; The AV / subcode digital stream having a low data transmission rate obtained from the dipping means can be input / output to / from the personal computer via the low-rate bus interface means, and the high-speed continuous reading can be performed. The high data transmission rate AV / subcode digital stream obtained from stage, via the high rate bus interface means, so as to be input and output between the second digital VTR,
Main control for generating a timing control signal for controlling the high-rate bus interface means, the frame unit AVS separation means, the thinning means, the low-speed reading means, the low-rate bus interface means, the low-speed writing means and the high-speed continuous reading means Editing system using a bus converter comprising: 8. A frame unit AVS comprising:
With respect to the video digital stream separated by the separating means and continuous in frame units, a DC component for small-screen display and an AC component for full-screen display of the video digital stream for an arbitrary one frame every several frames. An editing system using the bus converter according to claim 7, wherein the editing system is configured to thin out and extract the full size. 9. All digital data including an AV / subcode digital stream including a video digital stream, an audio digital stream, and a subcode digital stream signal such as a time code, and a control signal for controlling a device. A first digital VTR used for reproduction of all the digital streams, inputting / outputting the streams through a high-rate bus interface means capable of inputting / outputting the streams at a high data transmission rate in a predetermined manner; And a second digital VTR used for recording all the digital streams by inputting / outputting the digital streams to / from the outside through high-rate bus interface means capable of inputting / outputting at a high data transmission rate according to a predetermined method. All of the above A personal computer for externally inputting / outputting a digital stream through a low-rate bus interface capable of inputting / outputting a digital stream at a low data transmission rate according to a predetermined method; and information connected to the personal computer and being processed inside the personal computer. A personal computer display for displaying an image of the digital stream, wherein the first and second digital VTRs and the personal computer communicate with each other in accordance with the transmission rate, the protocol and the signal form for inputting and outputting each digital stream to the outside. When the digital streams have different formats due to the difference in the transmission method, the serial bus between the first and second digital VTRs and the personal computer have different serial buses. An editing system using a bus converter provided for converting and editing the format of the digital stream mutually in accordance with the transmission system of the serial bus when transmitting the digital stream through the bus. A converter converts the audio digital stream and the video signal portion, which constitute an audio signal portion in frame units, with respect to the AV / subcode digital stream obtained from the first digital VTR via the high-rate bus interface means. Frame AVS separation means for separating the video digital stream and the sub-code digital stream into a digital video stream and a sub-code digital stream. From any number of frames A thinning-out unit for thinning out a digital stream, the video digital stream for an arbitrary number of frames thinned out by the thinning-out unit, and all the audio digital streams and sub-code digital streams that are continuous in frame units are stored. When reading out the video digital stream for the arbitrary number of frames, the audio digital stream for all the frames, and the subcode digital stream stored in the memory, the video digital stream and the audio Low-speed reading means for converting a digital stream into an AV / subcode digital stream having a low data transmission rate and a format different from that of the AV / subcode digital stream from the first digital VTR due to a difference in transmission system. And from the personal computer through the low rate bus interface means,
A low-speed writing unit for writing, in the memory, an AV / sub-code digital stream having a low data transmission rate having a format different from that of the AV / sub-code digital stream from the first digital VTR due to a difference in transmission system; High-speed continuous reading means for continuously reading the AV / subcode digital stream of a lower data transmission rate written in the memory from the memory as an AV / subcode digital stream of a higher data transmission rate than the data transmission rate And the AV / subcode digital stream of the low data transmission rate obtained from the low-speed reading means can be input / output to / from the personal computer via the low-rate bus interface means. The high data rate AV / subcode digital stream obtained from the high-speed continuous reading means can be input / output to / from the second digital VTR via the high-rate bus interface means. A main unit for generating a timing control signal for controlling the high rate bus interface means, the frame unit AVS separation means, the thinning means, the low speed reading means, the low rate bus interface means, the low speed writing means, and the high speed continuous reading means; Control means, and a timing control signal from the main control means,
The low-speed reading means displays the AV / subcode digital stream of the low data transmission rate taken into the personal computer via the low-rate bus interface means on the personal computer display, and displays the display image. The AV / subcode digital stream taken into the personal computer is stored and saved at an editing point determined by an operation instruction given by the user to the personal computer while watching the data. To
A bus converter configured to thin out and extract only the DC component for small-screen display of the video digital stream for all frames from the video digital stream separated by the frame unit AVS separation unit and continuous in frame units. Editing system using a container. 10. An analog video and audio signal output terminal of a first digital VTR, via an analog bus,
In addition to connecting an analog VTR, an infrared signal transmitting means for transmitting an infrared signal for remote control operation based on a timing control signal from the main control means can be connected to the outside of the bus converter. In accordance with an infrared signal from the transmission means, the analog VTR disposed outside is configured to be remotely controllable through an infrared light receiving unit attached to its housing, and based on an instruction from the personal computer. , By controlling the first digital VTR and the analog VTR via the main control means.
10. An editing system using a bus converter according to claim 7, wherein the editing is performed between the analog VTR and the analog VTR. 11. A low-speed reading unit according to a timing control signal from a main control unit.
A low data transmission rate AV loaded into a personal computer via a low rate bus interface means
/ Displaying the sub-code digital stream on a display for a personal computer, and, while viewing the displayed image, further instructing the personal computer on an editing point determined by an operation instruction performed by the user, and further performing an operation instruction by the user To generate a new AV / subcode digital stream different from the AV / subcode digital stream taken into the personal computer, and transmit the new AV / subcode digital stream to the bus converter via the low-rate bus interface means. 10. An editing system using the bus converter according to claim 7, 8 or 9. 12. A digital VTR connected to a high-rate bus interface means and used for reproducing all digital streams, to control the operation of the digital VTR. Based on the video signal and time code information captured by the personal computer, a control signal issued by executing the software means of the personal computer is added to the main control means via the low-rate bus interface means,
On the basis of this control signal, the main control means controls and operates the digital VTR via the high-rate bus interface means, and the digital VTR is controlled by the user of the magnetic tape mounted therein. 12. An editing system using a bus converter according to any one of claims 1 to 5 and 7 to 11, configured to activate a reproduction operation of an arbitrary part to be converted and edited. 13. The high-rate bus interface means is 1394 interface means corresponding to the IEEE 1394 bus, and the low-rate bus interface means is USB interface means corresponding to USB. Editing system using a bus converter. 14. The high-rate bus interface means is a 1394 interface means corresponding to an IEEE 1394 bus, and the low-rate bus interface means is an RS232C signal corresponding to an RS232C serial bus.
An editing system using the bus converter according to any one of claims 1 to 12 as an interface means.