Methods and apparatus for decoding data streams are provided. A computing device can receive a decoder-input data stream (DIDS) encoded in a decoder-input format, the DIDS including a page table for pages in the DIDS, resources of the pages in the DIDS, and commands related to the resources, where the commands are in a binary format. The page table can refer to the pages of the DIDS. The resources can include reusable resources that are used multiple times in the DIDS, where each reusable resource is stored only once in the DIDS. The resources can be stored in first-come, first-served fashion in the DIDS. The computing device can decode the DIDS by executing the commands to generate an output depicting the pages. The computing device can provide the output depicting the pages.

Convenience and security of an information processing apparatus including a USB host interface in a case where network connection is established via a USB-LAN adapter are improved. The information processing apparatus includes a plurality of external USB ports to which USB compatible network adapters are connected. The information processing apparatus performs a predetermined notification in response to a number of the network adapters connected to the information processing apparatus via the external USB ports having reached a predetermined upper limit.

A printer communicates with an operation terminal and a weight measuring apparatus. The printer includes a receiving buffer configured to store data, a memory in which an identification information list for the weight measuring apparatus is stored, and a controller. The printer has a weight measuring mode for transferring the data received via a specific interface, to which the weight measuring apparatus is connected, to the operation terminal, and an ordinary mode for executing a command analysis after developing, in the receiving buffer, the data received via all interfaces including the specific interface. The controller is configured to: identify an external device based on identification information of the external device connected to the printer, determine whether the identification information is included in the identification information list, and let the operation mode be the weight measuring mode based on determining that the identification information is included in the identification information list.

A printing apparatus communicates with a weight measuring apparatus and a mobile terminal. The weight measuring apparatus transmits measuring data of weight of a measurement object, and the mobile terminal transmits a data acquisition command requesting for transmission of the measuring data. The printing apparatus includes a head to execute printing on a print medium, and a controller. The controller is configured to: receive the data acquisition command from the mobile terminal; change a state of the printer from an instruction waiting state to a data reception waiting state; receive a second measuring data transmitted from the weight measuring apparatus; transmit the second measuring data to the mobile terminal; receive a print command corresponding to the second measuring data from the mobile terminal; and control the head based on the received print command to perform the printing, on the print medium, corresponding to the second measuring data.

Convenience and security of an information processing apparatus including a USB host interface in a case where network connection is established via a USB-LAN adapter are improved. The information processing apparatus includes a plurality of external USB ports to which USB compatible network adapters are connected. The information processing apparatus performs a predetermined notification in response to a number of the network adapters connected to the information processing apparatus via the external USB ports having reached a predetermined upper limit.

A print apparatus configured to connect a plurality of wireless LAN adapters, the print apparatus includes a print mechanism configured to print on a print medium; a plurality of USB ports to which the wireless LAN adapter configured to be connected; and a processor configured to acquire information related to a wireless communication function of the wireless LAN adapter from the plurality of connected wireless LAN adapters in a case where it is detected that the wireless LAN adapters is in a state of being connected to the plurality of USB ports and executes processing which sets one higher function wireless LAN adapter to be in a usable state and sets the other wireless LAN adapter to be in an unusable state by comparing the acquired information items of the plurality of wireless LAN adapters.

A printing apparatus management server manages a plurality of printing apparatuses, obtains, in response to a request from a voice device management server, information of a predetermined printing apparatus registered, from the plurality of printing apparatuses, as a printing apparatus to be used in the printing apparatus management server, transmits, to the voice device management server, the obtained information of the predetermined printing apparatus, obtains remaining amount information transmitted from the predetermined printing apparatus, and transmits the obtained remaining amount information to the consumable item management server. Voice notification to a user is performed, via a voice device configured to communicate with the voice device management server, based on the obtained remaining amount information, and processing for placing an order for the consumable item is performed based on a voice instruction from the user accepted by the voice device.

A printer communicates with an operation terminal and a weight measuring apparatus. The printer includes a receiving buffer configured to store data, a memory in which an identification information list for the weight measuring apparatus is stored, and a controller. The printer has a weight measuring mode for transferring the data received via a specific interface, to which the weight measuring apparatus is connected, to the operation terminal, and an ordinary mode for executing a command analysis after developing, in the receiving buffer, the data received via all interfaces including the specific interface. The controller is configured to: identify an external device based on identification information of the external device connected to the printer, determine whether the identification information is included in the identification information list, and let the operation mode be the weight measuring mode based on determining that the identification information is included in the identification information list.

A printing apparatus communicates with a weight measuring apparatus and a mobile terminal. The weight measuring apparatus transmits measuring data of weight of a measurement object, and the mobile terminal transmits a data acquisition command requesting for transmission of the measuring data. The printing apparatus includes a head to execute printing on a print medium, and a controller. The controller is configured to: receive the data acquisition command from the mobile terminal; change a state of the printer from an instruction waiting state to a data reception waiting state; receive a second measuring data transmitted from the weight measuring apparatus; transmit the second measuring data to the mobile terminal; receive a print command corresponding to the second measuring data from the mobile terminal; and control the head based on the received print command to perform the printing, on the print medium, corresponding to the second measuring data.

A controller to control an apparatus (e.g. a printer) can include multiple secondary sub-controllers and a main sub-controller. Each of the secondary sub-controllers can have an operator process and one or more executable control processes. Each of the control processes can be configured to exchange data with one or more other of the control processes. The main sub-controller can be communicatively coupled to the secondary sub-controllers via a data network. Each of the main and secondary sub-controllers can include at least one processor and an operating system. The respective operator processes can be configured to communicate via the data network, and the control processes of each of the secondary sub-controllers can be configured such that the control processes communicate exclusively with the operator process of their respective secondary sub-controller to communicate via the data network.