JPS63157202A - Av system - Google Patents

Abstract

PURPOSE:To always control all units by providing the slave CPU in response to each component to control these components. CONSTITUTION:The subunits 31-3n contain the components 311-31n (voice amplifiers with speakers, television receivers, CD players, VTR, record players, video disk players, etc.) and the slave CPUs 321-31n which control those components 311-31n respectively. A main unit 4 contains a master CPU 41 having programs to control the units 31-3n, a common bus 42, digital picture processing parts 431-43m and an external connection interface 44. The units 31-3n are connected to the unit 4 via the bus 42 which transmits the clocks, data, idents, etc. Thus the units 31-3n can always be controlled by the unit 4 which functions as a normal unit.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to an AV system comprising a plurality of units.

[Prior art]

As shown in FIG. 2, the conventional configuration of this type of AV unit includes a plurality of independently operating units 1. In many cases, a central control unit 2 was provided which organically combines the ~lk. This centralized control unit 2 switches input/output signal lines,
It turned on and off the power of connected units and controlled the units based on external remote control signals.

However, in this system, a special central control unit 2
The problem was that it required

[Purpose of the invention]

An object of the present invention is to provide an AV system that eliminates the need for a central control unit and allows all units to be constantly managed.

[Structure of the invention]

To this end, the present invention provides an AV system composed of a plurality of units, in which each unit is divided into one main unit and a plurality of subunits, and each subunit can operate independently and connect to other units connected by a common bus. The main unit is configured to operate bidirectionally with the unit, and the main unit is configured to have a built-in program for controlling the subunits.

〔Example〕

Examples of the present invention will be described below. FIG. 1 is a diagram showing blocks constituting an AV system according to one embodiment.

31 to 37 are subunits ln, each of which has components 31. ~31. and its components 31. ~
31. It has slave CPUs 32, to 32, which control the CPUs. Components include an audio amplifier with speakers, a television receiver, a CD player, a record player, and a VTR.

There is a video disc player, captain system, and more.

4 is a main unit, which includes a master CPU 41 having a control program for controlling the subunits 31 to 3.1 described above, a common bus 42 such as a 1M bus, digital image processing units 431 to 431, and external connection. It has an interface 44. This main unit 4
is incorporated into a CRT monitor device that plays a central role in an AV system. The common bus 42 is composed of lines for transmitting clocks, data, amplifiers, etc., and is used by the subunits 31 to 3. , is also connected. The interface 44 is an external C connected with a connector such as R3232C.
This is for exchanging signals with the PU5 (panel, computer, modem, etc.), and when a command from the PU5 is to be input internally, the master CPU 41 is masked or put into a standby state.

Now, in the above, CP in subunits 3I to 37
U32+~32,1 represents each corresponding component 31. ~31. ．． It functions as a master, controlling other subunits/units through a common bus 42.
), but when the main unit 4 connected to the common bus 42 becomes active, it functions as a slave to the master CPU 41 of the main unit 4.

Therefore, in this state, the mask CPU 41 grasps the current state (operating, non-operating, etc.) of each element in the main unit as well as all of the subunits that make up the system. do. When a subunit is connected to another subunit (for example, an audio amplifier with a speaker and an audio signal output of a VTR are connected), the master CPU 41 is interposed between them.

Since the common bus 42 has only one function of reading or writing for one address, in order to apply the addressing method to the slave CPUs 32l to 3211, one slave CPU must have at least two addresses. are allocated for reading and writing.

Then, each slave CPU checks the sent address to see if it is an address that is unrelated to it, and if it is an address that specifies itself, the master CPU 41 instructs it to read the data (data: master slave). It determines whether there is a command (data: slave-mask) to send data, and performs the requested operation. Image data is exchanged between the subunit and a specific subunit.

Furthermore, when a control signal arrives from an external CPU 5 such as a personal computer, an interrupt line 45 from the interface 44 is sent.
The master CPU 41 is controlled to a mask or standby state, and the external CPU functions as a mask instead of the mask CPU 41. In other words, common bus 4
Commands from the external CPU 5 can be transmitted to the CPU 2. Therefore, in this case, the system within the main unit 4 can be freely rearranged using the external CPU.

Further, as shown in FIG. 1, a plurality of main units 4
．． By controlling 4' and 4'' from the external CPU 5,
You can also freely perform system amplification between systems.

〔Effect of the invention〕

As described above, according to the present invention, other units can be constantly controlled and managed by the main unit functioning as a normal unit without using a centralized control unit.

[Brief explanation of the drawing]

FIG. 1 is a block diagram of the configuration of an AV system according to an embodiment of the present invention, and FIG. 2 is a block diagram of the configuration of a conventional AV system. Agent Patent Attorney Tsuneaki Nagao Figure 1

Claims (1)

[Claims] (1) In an AV system composed of multiple units, each unit is divided into one main unit and multiple subunits, and each subunit operates independently and bidirectionally with other units connected by a common bus. An AV characterized in that the main unit is configured to operate, and the main unit has a built-in program for controlling the subunits.
system.