Abstract: An authentication system enabling a customer to verify the authenticity of a product in a foolproof, secure and simple manner. plurality of secret sets of numbers is generated, each set comprising a challenge portion and a response portion. These sets are stored on a remote server. Each set is associated with a different product. The customer sends a challenge portion to the server, and prompts the server to provide a response. If the response matches that of the product in hand, the product is known to be authentic. In another embodiment of the system, cellular transmission is used to power an electronic tag attached to the product and carrying authentication data. In a third embodiment, the full manufacturer database is divided into separate databases, possibly related to product vendor, such that an authentication process can be performed without the need to access the manufacturer's entire database of products.

Abstract: Communication apparatus includes a telephone adapter, which includes a phone connector, for connecting to a telephone, and a line connector, for connecting to a telephone line of a circuit-switched telephone network, and a computer interface. A phone analog front end (AFE) is coupled to the phone connector and operative to convert audio input signals generated by the telephone into digital output samples for transfer via the computer interface. A line AFE is coupled to the line connector and operative to convert digital input samples received from the computer interface into analog output signals for transmission over the telephone line. A computer, is coupled to the telephone adapter via the computer interface and is arranged to process the digital output samples and to generate the digital input samples.

Abstract: A telephone adapter includes a phone connector, for connecting to a telephone handset, and a line connector, for connecting to a telephone line of a circuit-switched telephone network. An analog front end (AFE) converts digital input samples received from the computer interface into analog audio signals, and converts the analog audio signals in the telephone adapter to digital output samples for transfer via the computer interface. Switching circuitry is coupled between the phone connector, line connector and AFE, and is controllable by a computer via a computer interface.

Abstract: A medical sensor includes a CMOS (complementary metal-oxide semiconductor) photo detecting sensor array with a sensitivity and SNR (signal to noise ratio) sufficient for medical purposes and a processing unit to generate an output signal indicating the amount of light impinging on said photo sensor array. The sensitivity is at least 10 bits and the SNR is at least 70 dB.

Abstract: The present invention will discuss how through the usage of the cellular handset or other host system short range communication, various portable devices and in particular medial monitoring devices can utilize the resources available inside the cellular handset or in other host system, and how communication can be established with a central service office. This will enable much smaller and cost effective portable devices. And the provision of quality service based on continuous monitoring of health conditions.

Abstract: A system for executing real-time tasks, such as a multi-line modem, on a client-server network includes a control unit and multiple processing units. The control unit is implementable by the server and each processing unit is implementable by a client or by the server. For the modem, the processing units can either modulate outgoing data and demodulate incoming samples per line or can implement one stage of the modem. For the former embodiment, the control unit assigns one processing unit to each active communication between one modem application on the network and one phone line. For the latter embodiment, the control unit moves the data and samples from one stage to the next.

Abstract: A method for communication includes modulating a stream of data in accordance with a voice-band modem specification, so as to generate a modulated signal. The modulated signal is up-shifted to generate a passband signal, which is transmitted over a telephone line simultaneously with a baseband voice signal.

Abstract: A method for communication includes modulating a stream of data in accordance with a voice-band modem specification, so as to generate a modulated signal. The modulated signal is up-shifted to generate a passband signal, which is transmitted over a telephone line simultaneously with a baseband voice signal.

Abstract: Apparatus for data communication includes a transmitter, which is adapted to generate a sequence of symbols at a variable symbol rate, responsively to a stream of digital data, and to convert the sequence to an analog data signal for transmission over a communication medium. A receiver includes an analog/digital converter (ADC), which is adapted to receive and digitize the data signal at a variable sampling rate so as to generate a sequence of digital samples, and digital processing circuitry, which is coupled to process the digital samples so as to extract the stream of digital data therefrom. The transmitter and the receiver are adapted to negotiate over the communication medium so as to set the sampling rate of the ADC and to determine the symbol rate responsively to the sampling rate.

Abstract: A telephony method and system for enabling a logical telephone line for a telephone station coupled to a personal computer coupled to a high-bandwidth channel is provided. A telephony method and system for enabling a logical telephone line for at least one telephone station coupled to an unused internal telephone line, which is coupled to a personal computer coupled to a high-bandwidth channel is also provided.

Abstract: A modem includes symbol converting unit and processing unit. The symbol converting unit converts between binary data and symbol data in accordance with a first constellation which is a transformed version of a standard constellation and the processing unit process the symbol data for transmission and produce symbol data from received signals. Alternatively, the symbol converting unit has at least two constellations to be selected.

Abstract: A manager for a personal computer for managing the operation of modem tasks while the personal computer also performs other tasks includes at least one driver and a task service manager. The driver activates and controls the modem tasks and the task service manager allocates time between the modem tasks and the other tasks, selects the service levels of the modem tasks in response to the activity levels of the other tasks and invokes the driver to activate and control the modem tasks at the selected service levels.

Abstract: Apparatus for data communications includes at least one modem front end, adapted to receive an incoming communication signal conveying incoming information over a communication medium, and at least one modem host. The front end includes front-end circuitry, which is coupled to receive the signal from the communication media and to process the signal so as to generate a stream of incoming digitized samples, and a local area network (LAN) interface unit, which is coupled to receive the incoming digitized samples and to frame the samples in data frames for transmission over a LAN. The modem host receives the data frames from the LAN and processes the incoming digitized samples so as to extract the information from the signal.

Abstract: A telephony method and system for enabling a logical telephone line for a telephone station coupled to a personal computer coupled to a high-bandwidth channel is provided. A telephony method and system for enabling a logical telephone line for at least one telephone station coupled to an unused internal telephone line, which is coupled to a personal computer coupled to a high-bandwidth channel is also provided.

Abstract: A modem includes symbol converting unit and processing unit. The symbol converting unit converts between binary data and symbol data in accordance with a first constellation which is a transformed version of a standard constellation and the processing unit process the symbol data for transmission and produce symbol data from received signals. Alternatively, the symbol converting unit has at least two constellations to be selected.

Abstract: A system for executing real-time tasks, such as a multi-line modem, on a client-server network includes a control unit and multiple processing units. The control unit is implementable by the server and each processing unit is implementable by a client or by the server. For the modem, the processing units can either modulate outgoing data and demodulate incoming samples per line or can implement one stage of the modem. For the former embodiment, the control unit assigns one processing unit to each active communication between one modem application on the network and one phone line. For the latter embodiment, the control unit moves the data and samples from one stage to the next.

Abstract: A real-time manager for a personal computer manages the operation of real-time tasks while the personal computer also performs other tasks. The real-time manager includes at least one real-time kernel and a task service manager. The real-time kernel activates and controls the real-time tasks. The task service manager allocates time between the real-time tasks and the other tasks, selects the service levels of the real-time tasks in response to the activity levels of the other tasks, and invokes the real-time kernel to activate and control the real-time tasks at the selected service levels.

Abstract: A combined audio and modem interface unit includes a standard audio component and an audio/modem signal processing unit. The audio component has two internal input and two internal output channels and is selectably connectable to at least an audio left port, an audio right port and a telephone port. The signal processing unit separately processes the modem and audio signals received from the audio component. The modem and one stereo audio signal can also be modulated and sent on a single output channel.