摘要:
The present invention relates to a communication method allowing an exclusive control between control sections by providing a communication procedure and a logical communication channel determined by the communication procedure. According to the first method of this invention, each electronic device (4, 5, 6) connected to a common signal transmission line (1) has means for establishing a secondary logical communication channel (2.1-2.4) between control sections (10-16) connected to the corresponding communication sections (7-9) of two electronic devices between which a primary logical communication channel (2, 3) has been established, thereby realizing an exclusive control at the level of control sections of the electronic devices connected to opposite ends of the established primary logical communication channel. According to the second method of this invention, there are provided, in the control section, means for establishing only the secondary logical communication channel (2.5-2.7) between control sections connected to the corresponding communication channel, and the communication procedure. Accordingly, under the condition that one or some of a plurality of control sections within a first electronic device is connected to another control section of a second electronic device, a control section of a third electronic device is allowed to communicate with a control section except the one or some of the control sections within the first electronic device occupied by the control section of the second electronic device.
摘要:
A data transmission control processing system is described which can easily realise the reading from and writing to the memories of other terminals in a network. The proposed system provides for writing to the memory of the other terminal in a way which is similar to the memory reading sequence of the D2B system, and thus simplifies the realisation of the reading/writing control sequence while reducing the number of control messages which are necessary. The system can easily cope with possible future expansions in the number and type or read/write control signals.
摘要:
In cases where a first communication control unit locks a second communication control unit to communicate with the second unit, the first unit stores a data representing a time remaining until the locking of the second unit is released. In these cases, the second unit stores a data representing an address of the first unit as a lock address corresponding to an address of a unit which locks the second unit. In cases where a third communication control unit tries to communicate with the second unit and fails the communication with the second unit, the third unit connects with the second unit and reads out the data representative of the lock address from the second unit, and then the third unit connects with the first unit in response to the lock address and reads out the data representative of the lock remaining time from the first unit. The third unit retries to communicate with the second unit after the lock remaining time elapses.
摘要:
A data transmission control processing system is described which can easily realise the reading from and writing to the memories of other terminals in a network. The proposed system provides for writing to the memory of the other terminal in a way which is similar to the memory reading sequence of the D2B system, and thus simplifies the realisation of the reading/writing control sequence while reducing the number of control messages which are necessary. The system can easily cope with possible future expansions in the number and type or read/write control signals.
摘要:
An information transmission system having a plurality of communication control units (1, 2, 3) connected to one another through an information transmission path (4) in a communication network comprises devices for collectively transmitting and collecting information to and from optional plural communication control units by using one information message.
摘要:
An information transmission system having a plurality of communication control units (1, 2, 3) connected to one another through an information transmission path (4) in a communication network comprises devices for collectively transmitting and collecting information to and from optional plural communication control units by using one information message.
摘要:
Operation information for distinguishing each operation of a wireless signal transmitter of a remote control system is included in a wireless signal of the wireless signal transmitter, the operation information is memorized in an AV apparatus which is designated by the wireless signal transmitter, and the wireless signal or only one of plural message frames which have the same information as the wireless signal and are transferred from other AV apparatus connected to a common communication line is selected by comparing the operation information of the message frame with the memorized message frame in the AV apparatus.
摘要:
An information transmission system having a plurality of communication control units (1, 2, 3) connected to one another through an information transmission path (4) in a communication network comprises devices for collectively transmitting and collecting information to and from optional plural communication control units by using one information message.