摘要:
A system or method for communicating data over a voice channel between a transmitter and a receiver. In one embodiment, the system includes: (1) a silence detector, coupled to the transmitter, that identifies a pause in voice traffic that is to be transmitted over the voice channel and generates an interjection signal during the pause and (2) a data injector, coupled to the silence detector, that receives the interjection signal and responds by causing the transmitter to transmit data to the receiver over the voice channel.
摘要:
In one embodiment, an online credit or debit card transaction is processed by transmitting purchase information, including price of the purchase item and card number, to the company that issued the card. In addition, the location from which the purchase is made is calculated, e.g., using a GPS device, and the location data is transmitted to the card issuer. The card issuer determines if the purchase meets certain specified approval requirements, such as whether the card holder has sufficient funds, the card has been reported missing, or card holder's personal information is correct. Further, the card issuer compares the location data to a number of predetermined purchase locations specified by the customer. If the location data matches one of the predetermined locations and the specified approval requirements are met, then the purchase is approved.
摘要:
A technique and apparatus for efficiently and flexibly utilizing shared memory as a full duplex mailbox for both data and payload information. The invention allows payload messages of varying lengths to be passed in contiguous memory space, allowing an interrupt service routine (ISR) or other process to easily and quickly read or cache the passed payload data. In a disclosed embodiment, a processor-to-processor mailbox is formed using a shared memory (e.g., a dual port RAM). The shared memory is separated into three main portions: a processor 1 to processor 2 fixed portion, a processor 2 to processor 1 fixed portion, and an unallocated dynamic portion. Importantly, the other direction of the mailbox is located starting at the highest address of the shared memory, and works toward the lowest address of the shared memory. Preferably, write access for payload messages and other generally longer messages are dynamically allocated in the unallocated dynamic portion for use in either mailbox. For messages passed in mailbox 1, i.e., from processor 1 to processor 2, the memory in the unallocated dynamic portion is allocated in a lowest to highest address direction. Conversely, for messages passed in mailbox 2, i.e., from processor 2 to processor 1, the memory in the unallocated dynamic portion is allocated in a highest to lowest address direction.
摘要:
A digital answering machine, electronic voice mail system, or any other voice messaging system integrating both non-speech data such as caller ID information or graphical or pictorial images together with associated speech data in common memory such that only one message table is necessary. The integrated common memory is divided into sectors, and each sector is divided into pages which each contain both speech and non-speech data. A single message table is associated with each corresponding set of speech and non-speech data, and includes an offset value indicating the beginning address of the speech data stored just above its associated non-speech data in the first linked page. The offset value is variable to provide an elastic non-speech data buffer to accommodate variable length non-speech data such as would be required by the various caller ID standards throughout the world.
摘要:
In an exemplary embodiment, a wireless handset allows a user having a connection in an “on-hold” state to select one or more sources for play-out of media at a handset receiver while in the on-hold state, and then be signaled when the on-hold state is terminated. Such on-hold state might be indirectly detected, such as by detection of music-on-hold, or directly detected through on-hold notification. User selected media for play-out might be locally generated at the user's handset, or provided through a separate connection established between the wireless handset and the network.
摘要:
An adjunct Type II caller ID/call waiting (CIDCW) receiver unit is provided which has a greatly improved ability to detect tones and other call related information on a telephone line from a central office while the customer premises equipment is in an off-hook condition. The inventive adjunct CIDCW receiver unit is placed in series between the telephone line from the central office and the customer premises equipment, rather than in parallel with the customer premises equipment as in conventional adjunct CIDCW receiver units. A second telephone line interface (TLI) is included in the adjunct CIDCW receiver unit for connection to the customer premises unit to simulate the impedance of the telephone line. The adjunct CIDCW receiver unit has the ability to disconnect, mute or suppress the microphone signal from the customer premises equipment from being included in the signal received by the call related information receiver portion of the adjunct CIDCW receiver unit.
摘要:
A wireless answering system is disclosed in which answering functions executed at a main telephone answering device can be controlled from an extension answering device. The extension answering device is able to record new outgoing messages, screen calls and playback messages recorded at the main telephone answering device. Communication between the main telephone answering device and extension telephone answering device are by way of wireless communications, preferably through a Bluetooth™ compliant communications path.
摘要:
Apparatus and method to record a verbal or textual summary for a particular voice message in a voice message system such as a telephone answering device. A message summary memory allows storage of either verbal or textual voice message summaries recorded by the calling party and/or by the user. The voice message summaries are retrievable by the user for playback or display before or during playback of the voice message.
摘要:
Detection of alerting or other tone signals in a composite signal are reliably detected with an improved false tone detect suppression technique which employs the use of a moving window analysis on a subset of frequencies detected within an underlying speech signal performed during each of a plurality of data frames. The composite signal is transformed during each data frame using a discrete Fourier transform comprising the so-called Goertzel Algorithm. All of the Goertzels relating to the tone detection are analyzed during each data frame, but only a subset of the Goertzels relating to the sweeping harmonic analysis of the underlying speech signal are analyzed during any particular data frame. Thus, rather than analyzing the underlying speech signal for the presence of any and all relevant frequencies during each data frame to prevent inadvertent tone detection, a piece wise sweeping harmonic analysis is performed over a plurality of data frames, providing a more efficient and less intensive moving sweeping harmonic analysis. Thus, in addition to the detection of the particular alerting or other tone signal, the underlying speech signal is analyzed over a moving plurality of data frames to provide a ‘canceling’ effect to the detection of a particular tone in the event that a harmonic frequency relating to the detected tone is present in the underlying speech signal. The result is a reliable, yet inexpensive tone detector.
摘要:
Type 2 caller ID/call waiting (CIDCW) customer premises equipment (CPE) is provided which has a greatly improved method of detecting tones indicating the availability of call information regarding an incoming call while the customer premises equipment is in an off-hook condition. A hybrid echo canceler (HEC) algorithm is added to the customer premises equipment (CPE) to suppress the signal from the microphone of the customer premises equipment from being included in the signal analyzed for the presence of tones. Thus, the microphone of the customer premises equipment need not be muted upon detection of the alerting CAS tone sequence in a Caller ID service. The HEC algorithm runs substantially continuously in a preferred embodiment, and may be combined with a conventionally operating HEC which cancels reflections due to the hybrid or telephone line interface.