Abstract: Implementations of the present specification provide an interaction behavior detection method, apparatus, system, and device. The method includes the following: obtaining a to-be-detected depth image photographed by a depth photographing device, extracting a foreground image used to represent a moving object from the to-be-detected depth image, obtaining spatial coordinate information of the moving object based on the foreground image, comparing the spatial coordinate information of the moving object with spatial coordinate information of a shelf in a rack, and determining an article touched by the moving object based on a comparison result and one or more articles on the shelf.

Abstract: A sub-assembly (20) of a housing for electronic equipment and which is capable of carrying electronic components. The sub-assembly (20) comprises an injection moulded plastics body having an area (21) in which a regular array of apertures (22) are formed, pushbuttons (23) being mounted in each aperture of the regular array of apertures. The pushbuttons (23) are shaped and dimensioned so that they cover the whole of the first area (21), the gaps between the pushbuttons (23) being limited to those required to allow clearance for operation of individual pushbuttons (23). Some of the pushbuttons are replaced by cover plates (24,25) which are mounted in appropriate apertures of the array of apertures.The pushbuttons (23) operate on dome shape elastomeric switching elements (45) arranged between the pushbutton plungers (43) and the printed circuit board (40). The domes have an electrically conductive portion which bridges conductive tracks on the printed circuit board when the corresponding pushbutton is depressed.

Abstract: A telephone set is provided including at least one deposit trough for the handset provided in the stationary housing part. A filler member is arranged in the edge region of the deposit trough, this filler member terminating flush with the deposit trough during table-top operation of the telephone set, whereas a nose connected thereto of one piece projects beyond the contours of the deposit trough upon use of the telephone set as a wall unit. The filler member should be securable such that the user himself can refit the telephone set to the two operating positions in a simple way. To this end, a freely accessible cutout into which the filler member can be introduced in two use positions is provided in the edge region of the deposit trough.

Abstract: A system for controlling the initiation of voting telephone calls by controlling character generators at a group of affiliated television broadcast stations through a control center which receives real-time feedback of telephone voting traffic data from polling terminals at telephone central offices and utilizes this information to regulate visual stimuli broadcast by the television station. The control center initiates polling traffic by causing associated character generators at the affiliate transmitter to produce the desired message displays across the TV screen. The control center monitors the polling call traffic at each central office until it determines that the traffic being generated has reached a level which is not within the traffic-handling capabilities of that particular central office switching machines.

Abstract: A high-speed modem that transmits and receives digital data on an ensemble of carrier frequencies spanning the usable band of a dial-up telephone line. The modem includes a system for variably allocating data and power among the carriers to compensate for equivalent noise and to maximize the data rate. Additionally, systems for eliminating the need for an equalization network, for adaptively allocating control of a channel, and for tracking variations in line parameters are disclosed.

Abstract: A single-tone receiver for a device which only needs simple data which can be encoded in the seven or eight single tones which can be generated by an ordinary pushbutton telephone is provided. A telephone line interface circuit receives a signal from the telephone line. The input signal is not filtered to separate the high-frequency tones from the low-frequency tones prior to their detection. A zero crossing detector coupled to the telephone line interface detects zero crossings of a received single-tone input signal. A microprocessor coupled to the zero crossing detector counts the number of zero crossings in a period and compares the count to counts corresponding to each of the seven single-tone frequencies.

Abstract: An intercom system for a building having several occupied units served by the same entrance with a locked door. A control panel at the entrance has several call switches, one for each occupied unit. An individual two-wire line extends between the entrance control panel and a control panel in each occupied unit. A person in the occupied unit, which has been called from the entrance can release the entrance door after talking with the visitor. The system consumes electrical power only when needed.

Abstract: A multi-subscriber warning system can, in instances where emergencies are impending, apply ringing current to the "ring" lines of one party systems, to the "ring" lines of "ring" two party systems, and to the "tip" lines of "tip" two party systems. Those ringing signals will actuate the "ringers" of all instruments which are not in use, and will cause a buzzing sound in the reproducers of all instruments which are in use. Further, if a subscriber hears the "ringers" and raises the receiver from the cradle, a buzzing sound will be heard; and then the ringing sound will resume when the receiver is placed on the cradle. Conversely, if a buzzing sound is heard by a subscriber using the instrument, a ringing sound will be heard when the instrument is placed on the cradle; and the buzzing sound will resume when the receiver is again removed from the cradle. The duration and number of ringing sounds can be varied; and preferably will be different from the normal ringing sounds used to "call" a subscriber.